fix: prevent infinite recursion in validateSchema for non-object schema entries

migrateConfig stamps a version string into config schemas. validateSchema
then iterates the string's character indices, causing infinite recursion.
Skip the 'version' key and guard against any non-object schema entries.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

datasets/assetData/assetData.json

@@ -110,6 +110,7 @@
                 { 
                   "id": "hidrostal-pump-001",
                   "name": "hidrostal-H05K-S03R",
+
                   "units": ["l/s"]
                 },
                 { 

datasets/assetData/curves/index.js

@@ -2,10 +2,11 @@ const fs = require('fs');
 const path = require('path');
 
 class AssetLoader {
-  constructor() {
+  constructor(maxCacheSize = 100) {
     this.relPath = './'
     this.baseDir = path.resolve(__dirname, this.relPath);
-    this.cache = new Map(); // Cache loaded JSON files for better performance
+    this.cache = new Map();
+    this.maxCacheSize = maxCacheSize;
   }
 
   /**
@@ -25,7 +26,11 @@ class AssetLoader {
    */
   loadAsset(datasetType, assetId) {
     //const cacheKey = `${datasetType}/${assetId}`;
-    const cacheKey = `${assetId}`;
+    const normalizedAssetId = String(assetId || '').trim();
+    if (!normalizedAssetId) {
+      return null;
+    }
+    const cacheKey = normalizedAssetId.toLowerCase();
 
     
     // Check cache first
@@ -34,11 +39,11 @@ class AssetLoader {
     }
 
     try {
-      const filePath = path.join(this.baseDir, `${assetId}.json`);
+      const filePath = this._resolveAssetPath(normalizedAssetId);
 
       // Check if file exists
-      if (!fs.existsSync(filePath)) {
+      if (!filePath || !fs.existsSync(filePath)) {
-        console.warn(`Asset not found: ${filePath}`);
+        console.warn(`Asset not found for id '${normalizedAssetId}' in ${this.baseDir}`);
         return null;
       }
 
@@ -46,7 +51,11 @@ class AssetLoader {
       const rawData = fs.readFileSync(filePath, 'utf8');
       const assetData = JSON.parse(rawData);
       
-      // Cache the result
+      // Cache the result (evict oldest if at capacity)
+      if (this.cache.size >= this.maxCacheSize) {
+        const oldestKey = this.cache.keys().next().value;
+        this.cache.delete(oldestKey);
+      }
       this.cache.set(cacheKey, assetData);
       
       return assetData;
@@ -56,6 +65,21 @@ class AssetLoader {
     }
   }
 
+  _resolveAssetPath(assetId) {
+    const exactPath = path.join(this.baseDir, `${assetId}.json`);
+    if (fs.existsSync(exactPath)) {
+      return exactPath;
+    }
+
+    const target = `${assetId}.json`.toLowerCase();
+    const files = fs.readdirSync(this.baseDir);
+    const matched = files.find((file) => file.toLowerCase() === target);
+    if (!matched) {
+      return null;
+    }
+    return path.join(this.baseDir, matched);
+  }
+
   /**
    * Get all available assets in a dataset
    * @param {string} datasetType - The dataset folder name
@@ -121,4 +145,4 @@ console.log('Available curves:', availableCurves);
 const { AssetLoader } = require('./index.js');
 const customLoader = new AssetLoader();
 const data = customLoader.loadCurve('hidrostal-H05K-S03R');
-*/
+*/

datasets/assetData/index.js

@@ -0,0 +1,89 @@
+const fs = require('fs');
+const path = require('path');
+
+class AssetCategoryManager {
+  constructor(relPath = '.') {
+    this.assetDir = path.resolve(__dirname, relPath);
+    this.cache = new Map();
+  }
+
+  getCategory(softwareType) {
+    if (!softwareType) {
+      throw new Error('softwareType is required');
+    }
+
+    if (this.cache.has(softwareType)) {
+      return this.cache.get(softwareType);
+    }
+
+    const filePath = path.resolve(this.assetDir, `${softwareType}.json`);
+    if (!fs.existsSync(filePath)) {
+      throw new Error(`Asset data '${softwareType}' not found in ${this.assetDir}`);
+    }
+
+    const raw = fs.readFileSync(filePath, 'utf8');
+    const parsed = JSON.parse(raw);
+    this.cache.set(softwareType, parsed);
+    return parsed;
+  }
+
+  hasCategory(softwareType) {
+    const filePath = path.resolve(this.assetDir, `${softwareType}.json`);
+    return fs.existsSync(filePath);
+  }
+
+  listCategories({ withMeta = false } = {}) {
+    const files = fs.readdirSync(this.assetDir, { withFileTypes: true });
+
+    return files
+      .filter(
+        (entry) =>
+          entry.isFile() &&
+          entry.name.endsWith('.json') &&
+          entry.name !== 'index.json' &&
+          entry.name !== 'assetData.json'
+      )
+      .map((entry) => path.basename(entry.name, '.json'))
+      .map((name) => {
+        if (!withMeta) {
+          return name;
+        }
+
+        const data = this.getCategory(name);
+        return {
+          softwareType: data.softwareType || name,
+          label: data.label || name,
+          file: `${name}.json`
+        };
+      });
+  }
+
+  searchCategories(query) {
+    const term = (query || '').trim().toLowerCase();
+    if (!term) {
+      return [];
+    }
+
+    return this.listCategories({ withMeta: true }).filter(
+      ({ softwareType, label }) =>
+        softwareType.toLowerCase().includes(term) ||
+        label.toLowerCase().includes(term)
+    );
+  }
+
+  clearCache() {
+    this.cache.clear();
+  }
+}
+
+const assetCategoryManager = new AssetCategoryManager();
+
+module.exports = {
+  AssetCategoryManager,
+  assetCategoryManager,
+  getCategory: (softwareType) => assetCategoryManager.getCategory(softwareType),
+  listCategories: (options) => assetCategoryManager.listCategories(options),
+  searchCategories: (query) => assetCategoryManager.searchCategories(query),
+  hasCategory: (softwareType) => assetCategoryManager.hasCategory(softwareType),
+  clearCache: () => assetCategoryManager.clearCache()
+};

datasets/assetData/machine.json

@@ -0,0 +1,21 @@
+{
+  "id": "machine",
+  "label": "machine",
+  "softwareType": "machine",
+  "suppliers": [
+    {
+      "id": "hidrostal",
+      "name": "Hidrostal",
+      "types": [
+        {
+          "id": "pump-centrifugal",
+          "name": "Centrifugal",
+          "models": [
+            { "id": "hidrostal-H05K-S03R", "name": "hidrostal-H05K-S03R", "units": ["l/s","m3/h"] },
+            { "id": "hidrostal-C5-D03R-SHN1", "name": "hidrostal-C5-D03R-SHN1", "units": ["l/s"] }
+          ]
+        }
+      ]
+    }
+  ]
+}

datasets/assetData/measurement.json

@@ -0,0 +1,115 @@
+{
+  "id": "sensor",
+  "label": "Sensor",
+  "softwareType": "measurement",
+  "suppliers": [
+    {
+      "id": "vega",
+      "name": "Vega",
+      "types": [
+        {
+          "id": "temperature",
+          "name": "Temperature",
+          "models": [
+            { "id": "vega-temp-10", "name": "VegaTemp 10", "units": ["degC", "degF"], "product_model_id": 1001, "product_model_uuid": "vega-temp-10" },
+            { "id": "vega-temp-20", "name": "VegaTemp 20", "units": ["degC", "degF"], "product_model_id": 1002, "product_model_uuid": "vega-temp-20" }
+          ]
+        },
+        {
+          "id": "pressure",
+          "name": "Pressure",
+          "models": [
+            { "id": "vega-pressure-10", "name": "VegaPressure 10", "units": ["bar", "mbar", "psi"], "product_model_id": 1003, "product_model_uuid": "vega-pressure-10" },
+            { "id": "vega-pressure-20", "name": "VegaPressure 20", "units": ["bar", "mbar", "psi"], "product_model_id": 1004, "product_model_uuid": "vega-pressure-20" }
+          ]
+        },
+        {
+          "id": "flow",
+          "name": "Flow",
+          "models": [
+            { "id": "vega-flow-10", "name": "VegaFlow 10", "units": ["m3/h", "gpm", "l/min"], "product_model_id": 1005, "product_model_uuid": "vega-flow-10" },
+            { "id": "vega-flow-20", "name": "VegaFlow 20", "units": ["m3/h", "gpm", "l/min"], "product_model_id": 1006, "product_model_uuid": "vega-flow-20" }
+          ]
+        },
+        {
+          "id": "level",
+          "name": "Level",
+          "models": [
+            { "id": "vega-level-10", "name": "VegaLevel 10", "units": ["m", "ft", "mm"], "product_model_id": 1007, "product_model_uuid": "vega-level-10" },
+            { "id": "vega-level-20", "name": "VegaLevel 20", "units": ["m", "ft", "mm"], "product_model_id": 1008, "product_model_uuid": "vega-level-20" }
+          ]
+        },
+        {
+          "id": "oxygen",
+          "name": "Quantity (oxygen)",
+          "models": [
+            { "id": "vega-oxy-10", "name": "VegaOxySense 10", "units": ["g/m3", "mol/m3"], "product_model_id": 1009, "product_model_uuid": "vega-oxy-10" }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "Endress+Hauser",
+      "name": "Endress+Hauser",
+      "types": [
+        {
+          "id": "flow",
+          "name": "Flow",
+          "models": [
+            { "id": "Promag-W400", "name": "Promag W400", "units": ["m3/h", "l/s", "gpm"] },
+            { "id": "Promag-W300", "name": "Promag W300", "units": ["m3/h", "l/s", "gpm"] }
+          ]
+        },
+        {
+          "id": "pressure",
+          "name": "Pressure",
+          "models": [
+            { "id": "Cerabar-PMC51", "name": "Cerabar PMC51", "units": ["mbar", "bar", "psi"] },
+            { "id": "Cerabar-PMC71", "name": "Cerabar PMC71", "units": ["mbar", "bar", "psi"] }
+          ]
+        },
+        {
+          "id": "level",
+          "name": "Level",
+          "models": [
+            { "id": "Levelflex-FMP50", "name": "Levelflex FMP50", "units": ["m", "mm", "ft"] }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "Hach",
+      "name": "Hach",
+      "types": [
+        {
+          "id": "dissolved-oxygen",
+          "name": "Dissolved Oxygen",
+          "models": [
+            { "id": "LDO2", "name": "LDO2", "units": ["mg/L", "ppm"] }
+          ]
+        },
+        {
+          "id": "ammonium",
+          "name": "Ammonium",
+          "models": [
+            { "id": "Amtax-sc", "name": "Amtax sc", "units": ["mg/L"] }
+          ]
+        },
+        {
+          "id": "nitrate",
+          "name": "Nitrate",
+          "models": [
+            { "id": "Nitratax-sc", "name": "Nitratax sc", "units": ["mg/L"] }
+          ]
+        },
+        {
+          "id": "tss",
+          "name": "TSS (Suspended Solids)",
+          "models": [
+            { "id": "Solitax-sc", "name": "Solitax sc", "units": ["mg/L", "g/L"] }
+          ]
+        }
+      ]
+    }
+  ]
+}

datasets/assetData/modelData/ECDV.json

@@ -0,0 +1,16 @@
+{
+    "1.204": {
+        "125": {
+            "x": [0,10,20,30,40,50,60,70,80,90,100],
+            "y": [0,18,50,95,150,216,337,564,882,1398,1870]
+        },
+        "150": {
+            "x": [0,10,20,30,40,50,60,70,80,90,100],
+            "y": [0,25,73,138,217,314,490,818,1281,2029,2715]
+        },
+        "400": {
+            "x": [0,10,20,30,40,50,60,70,80,90,100],
+            "y": [0,155,443,839,1322,1911,2982,4980,7795,12349,16524]
+        }
+    }
+}

datasets/assetData/modelData/hidrostal-C5-D03R-SHN1.json

@@ -0,0 +1,838 @@
+{
+    "np":  {
+               "400":  {
+                           "x":  [
+                                     0,
+                                     25.510204081632654,
+                                     51.020408163265309,
+                                     76.530612244897952,
+                                     100
+                                 ],
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+                                     1.6935085477165994,
+                                     3.801139124304824,
+                                     7.367829525776738,
+                                     12.081735423116616
+                                 ]
+                       },
+               "500":  {
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+                                     0,
+                                     25.510204081632654,
+                                     51.020408163265309,
+                                     76.530612244897952,
+                                     100
+                                 ],
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+                                     1.8497068236812997,
+                                     3.801139124304824,
+                                     7.367829525776738,
+                                     12.081735423116616
+                                 ]
+                       },
+               "600":  {
+                           "x":  [
+                                     0,
+                                     25.510204081632654,
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+                                     76.530612244897952,
+                                     100
+                                 ],
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+                                 ]
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+               "700":  {
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+                                 ]
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+               "800":  {
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+                                      76.530612244897952,
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+               "2900":  {
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+                                      76.530612244897952,
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+                                      9.500000000000002,
+                                      12.7,
+                                      16,
+                                      32.54934541379723
+                                  ]
+                        }
+           }
+}

datasets/assetData/modelData/index.js

@@ -0,0 +1,124 @@
+const fs = require('fs');
+const path = require('path');
+
+class AssetLoader {
+  constructor() {
+    this.relPath = './'
+    this.baseDir = path.resolve(__dirname, this.relPath);
+    this.cache = new Map(); // Cache loaded JSON files for better performance
+  }
+
+  /**
+   * Load a specific curve by type
+   * @param {string} curveType - The curve identifier (e.g., 'hidrostal-H05K-S03R')
+   * @returns {Object|null} The curve data object or null if not found
+   */
+  loadModel(modelType) {
+    return this.loadAsset('models', modelType);
+  }
+
+  /**
+   * Load any asset from a specific dataset folder
+   * @param {string} datasetType - The dataset folder name (e.g., 'curves', 'assetData')
+   * @param {string} assetId - The specific asset identifier
+   * @returns {Object|null} The asset data object or null if not found
+   */
+  loadAsset(datasetType, assetId) {
+    //const cacheKey = `${datasetType}/${assetId}`;
+    const cacheKey = `${assetId}`;
+
+    
+    // Check cache first
+    if (this.cache.has(cacheKey)) {
+      return this.cache.get(cacheKey);
+    }
+
+    try {
+      const filePath = path.join(this.baseDir, `${assetId}.json`);
+
+      // Check if file exists
+      if (!fs.existsSync(filePath)) {
+        console.warn(`Asset not found: ${filePath}`);
+        return null;
+      }
+
+      // Load and parse JSON
+      const rawData = fs.readFileSync(filePath, 'utf8');
+      const assetData = JSON.parse(rawData);
+      
+      // Cache the result
+      this.cache.set(cacheKey, assetData);
+      
+      return assetData;
+    } catch (error) {
+      console.error(`Error loading asset ${cacheKey}:`, error.message);
+      return null;
+    }
+  }
+
+  /**
+   * Get all available assets in a dataset
+   * @param {string} datasetType - The dataset folder name
+   * @returns {string[]} Array of available asset IDs
+   */
+  getAvailableAssets(datasetType) {
+    try {
+      const datasetPath = path.join(this.baseDir, datasetType);
+      
+      if (!fs.existsSync(datasetPath)) {
+        return [];
+      }
+
+      return fs.readdirSync(datasetPath)
+        .filter(file => file.endsWith('.json'))
+        .map(file => file.replace('.json', ''));
+    } catch (error) {
+      console.error(`Error reading dataset ${datasetType}:`, error.message);
+      return [];
+    }
+  }
+
+  /**
+   * Clear the cache (useful for development/testing)
+   */
+  clearCache() {
+    this.cache.clear();
+  }
+}
+
+// Create and export a singleton instance
+const assetLoader = new AssetLoader();
+
+module.exports = {
+  AssetLoader,
+  assetLoader,
+  // Convenience methods for backward compatibility
+  loadModel: (modelType) => assetLoader.loadModel(modelType),
+  loadAsset: (datasetType, assetId) => assetLoader.loadAsset(datasetType, assetId),
+  getAvailableAssets: (datasetType) => assetLoader.getAvailableAssets(datasetType)
+};
+
+/*
+// Example usage in your scripts
+const loader = new AssetLoader();
+
+// Load a specific curve
+const curve = loader.loadModel('hidrostal-H05K-S03R');
+if (curve) {
+  console.log('Model loaded:', curve);
+} else {
+  console.log('Model not found');
+}
+/*
+// Load any asset from any dataset
+const someAsset = loadAsset('assetData', 'some-asset-id');
+
+// Get list of available models
+const availableCurves = getAvailableAssets('curves');
+console.log('Available curves:', availableCurves);
+
+// Using the class directly for more control
+const { AssetLoader } = require('./index.js');
+const customLoader = new AssetLoader();
+const data = customLoader.loadCurve('hidrostal-H05K-S03R');
+*/

datasets/assetData/monsterSamples.json

@@ -0,0 +1,716 @@
+{
+  "samples": [
+    {
+      "code": "106100",
+      "description": "Baarle Nassau influent totaal"
+    },
+    {
+      "code": "106100C",
+      "description": "RWZI Baarle Nassau influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "106120",
+      "description": "Baarle Nassau inhoud beluchtingsruimte"
+    },
+    {
+      "code": "106150",
+      "description": "Baarle Nassau effluent"
+    },
+    {
+      "code": "106209",
+      "description": "Baarle Nassau slibafvoer voorindikker"
+    },
+    {
+      "code": "106400",
+      "description": "Baarle Nassau slibafvoer slibbufferput"
+    },
+    {
+      "code": "109100",
+      "description": "RWZI Chaam influent totaal"
+    },
+    {
+      "code": "109100C",
+      "description": "RWZI Chaam influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "109120",
+      "description": "RWZI Chaam inhoud beluchtingstank"
+    },
+    {
+      "code": "109150",
+      "description": "RWZI Chaam effluent"
+    },
+    {
+      "code": "109153",
+      "description": "RWZI Chaam afloop cascade"
+    },
+    {
+      "code": "109400",
+      "description": "Chaam slib afvoer slibbufferput"
+    },
+    {
+      "code": "112004",
+      "description": "RWZI Dongemond diverse onderzoeken"
+    },
+    {
+      "code": "112062",
+      "description": "RWZI Dongemond RUWE(geleverde) PE zeefbandpers"
+    },
+    {
+      "code": "112100",
+      "description": "RWZI Dongemond influent totaal"
+    },
+    {
+      "code": "112100C",
+      "description": "RWZI Dongemond influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "112110",
+      "description": "RWZI Dongemond afloop voorbezinktank"
+    },
+    {
+      "code": "112121",
+      "description": "RWZI Dongemond inhoud beluchtingstank 1"
+    },
+    {
+      "code": "112122",
+      "description": "RWZI Dongemond inhoud beluchtingstank 2"
+    },
+    {
+      "code": "112123",
+      "description": "RWZI Dongemond inhoud beluchtingstank 3"
+    },
+    {
+      "code": "112124",
+      "description": "RWZI Dongemond inhoud beluchtingstank 4"
+    },
+    {
+      "code": "112150",
+      "description": "RWZI Dongemond effluent"
+    },
+    {
+      "code": "112203",
+      "description": "RWZI Dongemond inhoud container zandvanger"
+    },
+    {
+      "code": "112206",
+      "description": "RWZI Dongemond ingedikt primair slib"
+    },
+    {
+      "code": "112211",
+      "description": "RWZI Dongemond ingedikt secundair slib"
+    },
+    {
+      "code": "112231",
+      "description": "RWZI Dongemond afvoer bandindikker"
+    },
+    {
+      "code": "112244",
+      "description": "RWZI Dongemond inhoud gistingstank"
+    },
+    {
+      "code": "112287",
+      "description": "RWZI Dongemond waterafvoer zeefbandpers totaal"
+    },
+    {
+      "code": "112425",
+      "description": "RWZI Dongemond afvoer slibkoek silo"
+    },
+    {
+      "code": "112569",
+      "description": "RWZI Dongemond Al2(SO4)3"
+    },
+    {
+      "code": "115100",
+      "description": "RWZI Kaatsheuvel influent totaal"
+    },
+    {
+      "code": "115100C",
+      "description": "RWZI Kaatsheuvel influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "115120",
+      "description": "RWZI Kaatsheuvel inhoud beluchtingsruimte"
+    },
+    {
+      "code": "115150",
+      "description": "RWZI Kaatsheuvel effluent"
+    },
+    {
+      "code": "115155",
+      "description": "RWZI Kaatsheuvel toevoer zandfilter"
+    },
+    {
+      "code": "115156",
+      "description": "RWZI Kaatsheuvel afvoer zandfilter"
+    },
+    {
+      "code": "115157",
+      "description": "RWZI Kaatsheuvel afvoer waswater zandfilter"
+    },
+    {
+      "code": "115166",
+      "description": "RWZI Kaatsheuvel Voor UV filter"
+    },
+    {
+      "code": "115167",
+      "description": "RWZI Kaatsheuvel Na UV filter"
+    },
+    {
+      "code": "115203",
+      "description": "RWZI Kaatsheuvel inhoud container zandvanger"
+    },
+    {
+      "code": "115209",
+      "description": "RWZI Kaatsheuvel slibafvoer voorindikker"
+    },
+    {
+      "code": "115400",
+      "description": "RWZI Kaatsheuvel slibafvoer slibbufferput"
+    },
+    {
+      "code": "116100",
+      "description": "RWZI Lage-Zwaluwe influent totaal"
+    },
+    {
+      "code": "116100C",
+      "description": "RWZI Lage-Zwaluwe influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "116120",
+      "description": "RWZI Lage-Zwaluwe inhoud beluchtingsruimte"
+    },
+    {
+      "code": "116150",
+      "description": "RWZI Lage-Zwaluwe effluent"
+    },
+    {
+      "code": "116400",
+      "description": "RWZI Lage-Zwaluwe slibafvoer slibbufferput"
+    },
+    {
+      "code": "121100",
+      "description": "RWZI Riel influent totaal"
+    },
+    {
+      "code": "121100C",
+      "description": "RWZI Riel influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "121120",
+      "description": "RWZI Riel inhoud beluchtingruimte"
+    },
+    {
+      "code": "121150",
+      "description": "RWZI Riel effluent"
+    },
+    {
+      "code": "121203",
+      "description": "RWZI Riel inhoud container zandvanger"
+    },
+    {
+      "code": "121400",
+      "description": "RWZI Riel slibafvoer slibbufferput"
+    },
+    {
+      "code": "124089",
+      "description": "RWZI Rijen aanvoer kolkenzuigermateriaal"
+    },
+    {
+      "code": "124100",
+      "description": "RWZI Rijen influent totaal"
+    },
+    {
+      "code": "124100C",
+      "description": "RWZI Rijen influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "124110",
+      "description": "RWZI Rijen afloop voorbezinktank"
+    },
+    {
+      "code": "124120",
+      "description": "RWZI Rijen inhoud beluchtingsruimte"
+    },
+    {
+      "code": "124150",
+      "description": "RWZI Rijen effluent"
+    },
+    {
+      "code": "124151",
+      "description": "RWZI Rijen effluent voor legionella"
+    },
+    {
+      "code": "124203",
+      "description": "RWZI Rijen inhoud container zandvanger"
+    },
+    {
+      "code": "124206",
+      "description": "RWZI Rijen ingedikt primair slib"
+    },
+    {
+      "code": "124211",
+      "description": "RWZI Rijen ingedikt secundair slib"
+    },
+    {
+      "code": "124350",
+      "description": "RWZI Rijen Toevoer bandindikker"
+    },
+    {
+      "code": "124351",
+      "description": "RWZI Rijen Afvoer bandindikker"
+    },
+    {
+      "code": "124352",
+      "description": "RWZI Rijen waterafvoer bandindikker"
+    },
+    {
+      "code": "124400",
+      "description": "RWZI Rijen slibafvoer"
+    },
+    {
+      "code": "124540",
+      "description": "RWZI Rijen RUWE(geleverde) PE bandindikker"
+    },
+    {
+      "code": "127100",
+      "description": "RWZI Waalwijk influent totaal"
+    },
+    {
+      "code": "127100C",
+      "description": "RWZI Waalwijk influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "127110",
+      "description": "RWZI Waalwijk afloop VBT"
+    },
+    {
+      "code": "127121",
+      "description": "RWZI Waalwijk inhoud beluchtingsruimte 1"
+    },
+    {
+      "code": "127122",
+      "description": "RWZI Waalwijk inhoud beluchtingsruimte 2"
+    },
+    {
+      "code": "127150",
+      "description": "RWZI Waalwijk effluent"
+    },
+    {
+      "code": "127203",
+      "description": "RWZI Waalwijk inhoud container zandvanger"
+    },
+    {
+      "code": "127206",
+      "description": "RWZI Waalwijk ingedikt primair slib"
+    },
+    {
+      "code": "127211",
+      "description": "RWZI Waalwijk ingedikt secundair slib"
+    },
+    {
+      "code": "127244",
+      "description": "RWZI Waalwijk inhoud gistingstank"
+    },
+    {
+      "code": "127450",
+      "description": "RWZI Waalwijk slibafvoer indiklagune"
+    },
+    {
+      "code": "131100",
+      "description": "RWZI Waspik industrie & dorp influent totaal"
+    },
+    {
+      "code": "131100C",
+      "description": "RWZI Waspik influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "131120",
+      "description": "RWZI Waspik inhoud beluchtingsruimte"
+    },
+    {
+      "code": "131150",
+      "description": "RWZI Waspik effluent"
+    },
+    {
+      "code": "131400",
+      "description": "RWZI Waspik slibafvoer slibbufferput"
+    },
+    {
+      "code": "131581",
+      "description": "Waspik Levering Aluminiumchloride 9%"
+    },
+    {
+      "code": "142062",
+      "description": "RWZI Nieuwveer RUWE(geleverde) PE zeefbandpers"
+    },
+    {
+      "code": "142078",
+      "description": "RWZI Nieuwveer Cloetta suikerwater"
+    },
+    {
+      "code": "142089",
+      "description": "RWZI Nieuwveer aanvoer kolkenzuigermateriaal"
+    },
+    {
+      "code": "142105",
+      "description": "RWZI Nieuwveer afloop influentvijzels"
+    },
+    {
+      "code": "142105C",
+      "description": "RWZI Nieuwveer afloop influentvijzels - Monstername influent COVID-19"
+    },
+    {
+      "code": "142110",
+      "description": "RWZI Nieuwveer afloop TBT"
+    },
+    {
+      "code": "142121",
+      "description": "RWZI Nieuwveer inhoud beluchtingsruimte 1"
+    },
+    {
+      "code": "142122",
+      "description": "RWZI Nieuwveer inhoud beluchtingsruimte 2"
+    },
+    {
+      "code": "142123",
+      "description": "RWZI Nieuwveer inhoud beluchtingsruimte 3"
+    },
+    {
+      "code": "142124",
+      "description": "RWZI Nieuwveer inhoud beluchtingsruimte 4"
+    },
+    {
+      "code": "142150",
+      "description": "RWZI Nieuwveer effluent"
+    },
+    {
+      "code": "142174",
+      "description": "RWZI Nieuwveer secundair spuislib"
+    },
+    {
+      "code": "142203",
+      "description": "RWZI Nieuwveer inhoud container zandvanger"
+    },
+    {
+      "code": "142301",
+      "description": "RWZI Nieuwveer slibafvoer Bandindikker 1"
+    },
+    {
+      "code": "142302",
+      "description": "RWZI Nieuwveer slibafvoer Bandindikker 2"
+    },
+    {
+      "code": "142303",
+      "description": "RWZI Nieuwveer slibafvoer Bandindikker 3"
+    },
+    {
+      "code": "142310",
+      "description": "RWZI Nieuwveer monitor slibafvoer ESOMT"
+    },
+    {
+      "code": "142311",
+      "description": "RWZI Nieuwveer afloop Gisting"
+    },
+    {
+      "code": "142325",
+      "description": "RWZI Nieuwveer Influent DEMON"
+    },
+    {
+      "code": "142326",
+      "description": "RWZI Nieuwveer Inhoud DEMON"
+    },
+    {
+      "code": "142327",
+      "description": "RWZI Nieuwveer Effluent DEMON"
+    },
+    {
+      "code": "142332",
+      "description": "RWZI Nieuwveer retourwater slibverwerking"
+    },
+    {
+      "code": "142425",
+      "description": "RWZI Nieuwveer afvoer slibkoek silo"
+    },
+    {
+      "code": "142571",
+      "description": "RWZI Nieuwveer ijzersulfaat levering totaal"
+    },
+    {
+      "code": "144007",
+      "description": "Bouvigne Toevoer helofytenfilter"
+    },
+    {
+      "code": "144008",
+      "description": "Bouvigne Afvoer helofytenfilter"
+    },
+    {
+      "code": "144061",
+      "description": "144061 (toevoer verticale helofytenfilters)"
+    },
+    {
+      "code": "144062",
+      "description": "144062 (afvoer verticale helofytenfilters)"
+    },
+    {
+      "code": "144063",
+      "description": "144063 (afvoer horizontale helofytenfilters)"
+    },
+    {
+      "code": "144064",
+      "description": "144064 (kwaliteit voorberging)"
+    },
+    {
+      "code": "160061",
+      "description": "RWZI Bath RUWE(geleverde) PE bandindikker"
+    },
+    {
+      "code": "160062",
+      "description": "RWZI Bath RUWE(geleverde) PE zeefbandpers"
+    },
+    {
+      "code": "160100",
+      "description": "Bath influent totaal"
+    },
+    {
+      "code": "160100C",
+      "description": "RWZI Bath influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "160110",
+      "description": "Bath Afloop Voorbezinktank West (1 en 3)"
+    },
+    {
+      "code": "160112",
+      "description": "Bath Afloop Voorbezinktank Oost (2 en 4)"
+    },
+    {
+      "code": "160121",
+      "description": "Bath inhoud beluchtingsruimte 1, sectie 4"
+    },
+    {
+      "code": "160122",
+      "description": "Bath inhoud beluchtingsruimte 2, sectie 4"
+    },
+    {
+      "code": "160123",
+      "description": "Bath inhoud beluchtingsruimte 3, sectie 4"
+    },
+    {
+      "code": "160124",
+      "description": "Bath inhoud beluchtingsruimte 4, sectie 4"
+    },
+    {
+      "code": "160125",
+      "description": "Bath inhoud beluchtingsruimte 5, sectie 4"
+    },
+    {
+      "code": "160126",
+      "description": "Bath inhoud beluchtingsruimte 6, sectie 4"
+    },
+    {
+      "code": "160127",
+      "description": "Bath inhoud beluchtingsruimte 7, sectie 4"
+    },
+    {
+      "code": "160128",
+      "description": "Bath inhoud beluchtingsruimte 8, sectie 4"
+    },
+    {
+      "code": "160129",
+      "description": "Bath inhoud beluchtingsruimte 9, sectie 4"
+    },
+    {
+      "code": "160130",
+      "description": "Bath inhoud beluchtingsruimte 10, sectie 4"
+    },
+    {
+      "code": "160150",
+      "description": "Bath effluent"
+    },
+    {
+      "code": "160206",
+      "description": "Bath ingedikt primair slib"
+    },
+    {
+      "code": "160245",
+      "description": "Bath inhoud gistingstank 1 ZB"
+    },
+    {
+      "code": "160246",
+      "description": "Bath inhoud gistingstank 2 ZB"
+    },
+    {
+      "code": "160415",
+      "description": "Bath 160415 Ingedikt Sec.slib BI 1-4 (Buffer)"
+    },
+    {
+      "code": "160425",
+      "description": "Bath afvoer slibkoek silo"
+    },
+    {
+      "code": "169100",
+      "description": "RWZI Dinteloord influent totaal"
+    },
+    {
+      "code": "169100C",
+      "description": "RWZI Dinteloord influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "169120",
+      "description": "RWZI Dinteloord inhoud beluchtingsruimte"
+    },
+    {
+      "code": "169150",
+      "description": "RWZI Dinteloord effluent"
+    },
+    {
+      "code": "169209",
+      "description": "RWZI Dinteloord slibafvoer voorindikker"
+    },
+    {
+      "code": "169400",
+      "description": "RWZI Dinteloord slibafvoer slibbufferput"
+    },
+    {
+      "code": "169700",
+      "description": "RWZI Dinteloord Peilbuis ref 01"
+    },
+    {
+      "code": "169705",
+      "description": "RWZI Dinteloord Peilbuis ref 02"
+    },
+    {
+      "code": "169710",
+      "description": "RWZI Dinteloord Peilbuis 03"
+    },
+    {
+      "code": "169715",
+      "description": "RWZI Dinteloord Peilbuis 04"
+    },
+    {
+      "code": "169720",
+      "description": "RWZI Dinteloord Peilbuis 05"
+    },
+    {
+      "code": "172100",
+      "description": "RWZI Halsteren influent"
+    },
+    {
+      "code": "172100C",
+      "description": "RWZI Halsteren influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "172120",
+      "description": "RWZI Halsteren inhoud beluchtingsruimte"
+    },
+    {
+      "code": "172150",
+      "description": "RWZI Halsteren effluent"
+    },
+    {
+      "code": "172209",
+      "description": "RWZI Halsteren slibafvoer voorindikker"
+    },
+    {
+      "code": "172400",
+      "description": "RWZI Halsteren slibafvoer slibbufferput"
+    },
+    {
+      "code": "181100",
+      "description": "RWZI Nieuw-Vossemeer influent totaal"
+    },
+    {
+      "code": "181100C",
+      "description": "RWZI Nieuw-Vossemeer influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "181120",
+      "description": "RWZI Nieuw-Vossemeer inhoud beluchtingsruimte"
+    },
+    {
+      "code": "181150",
+      "description": "RWZI Nieuw-Vossemeer Effluent steekmonster"
+    },
+    {
+      "code": "181156",
+      "description": "RWZI Nieuw-Vossemeer Effluent waterharmonica steekmonster"
+    },
+    {
+      "code": "181400",
+      "description": "Nieuw Vossemeer slibafvoer slibbufferput"
+    },
+    {
+      "code": "184100",
+      "description": "RWZI Ossendrecht influent totaal"
+    },
+    {
+      "code": "184100C",
+      "description": "RWZI Ossendrecht influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "184120",
+      "description": "RWZI Ossendrecht inhoud beluchtingsruimte"
+    },
+    {
+      "code": "184150",
+      "description": "RWZI Ossendrecht effluent"
+    },
+    {
+      "code": "184460",
+      "description": "RWZI Ossendrecht afvoer slibpersleiding naar AWP"
+    },
+    {
+      "code": "191100",
+      "description": "RWZI Putte influent totaal"
+    },
+    {
+      "code": "191100C",
+      "description": "RWZI Putte influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "191120",
+      "description": "RWZI Putte inhoud beluchtingsruimte"
+    },
+    {
+      "code": "191150",
+      "description": "RWZI Putte effluent"
+    },
+    {
+      "code": "191460",
+      "description": "RWZI Putte afvoer slibpersleiding naar AWP"
+    },
+    {
+      "code": "196100",
+      "description": "RWZI Willemstad influent totaal"
+    },
+    {
+      "code": "196100C",
+      "description": "RWZI Willemstad influent - Monstername influent COVID-19"
+    },
+    {
+      "code": "196120",
+      "description": "RWZI Willemstad inhoud beluchtingsruimte"
+    },
+    {
+      "code": "196150",
+      "description": "RWZI Willemstad effluent"
+    },
+    {
+      "code": "196400",
+      "description": "RWZI Willemstad slibafvoer slibbufferput"
+    },
+    {
+      "code": "303203",
+      "description": "Persstation Bergen op Zoom inh. container zandvang"
+    },
+    {
+      "code": "312203",
+      "description": "AWP persstation Roosendaal inh. container zandvang"
+    },
+    {
+      "code": "WSBD Toeslag Weekendbemonsteri",
+      "description": "WSBD Toeslag Weekendbemonsteringen"
+    }
+  ]
+}

datasets/assetData/valve.json

@@ -0,0 +1,27 @@
+{
+  "id": "valve",
+  "label": "valve",
+  "softwareType": "valve",
+  "suppliers": [
+    {
+      "id": "binder",
+      "name": "Binder Engineering",
+      "types": [
+        {
+          "id": "valve-gate",
+          "name": "Gate",
+          "models": [
+            { "id": "binder-valve-001", "name": "ECDV", "units": ["m3/h", "gpm", "l/min"] }
+          ]
+        },
+        {
+          "id": "valve-jet",
+          "name": "Jet",
+          "models": [
+            { "id": "binder-valve-002", "name": "JCV", "units": ["m3/h", "gpm", "l/min"] }
+          ]
+        }
+      ]
+    }
+  ]
+}

index.js

@@ -8,30 +8,39 @@
  */
 
 // Core helper modules
-const outputUtils = require('./src/helper/outputUtils.js');
+const helper = require('./src/helper/index.js');
-const logger = require('./src/helper/logger.js');
+const {
-const validation = require('./src/helper/validationUtils.js');
+    outputUtils,
-const configUtils = require('./src/helper/configUtils.js');
+    logger,
-const assertions = require('./src/helper/assertionUtils.js')
+    validation,
+    configUtils,
+    assertions,
+    childRegistrationUtils,
+    gravity,
+} = helper;
 const coolprop = require('./src/coolprop-node/src/index.js');
+const assetApiConfig = require('./src/configs/assetApiConfig.js');
 
 // Domain-specific modules
 const { MeasurementContainer } = require('./src/measurements/index.js');
 const configManager = require('./src/configs/index.js');
-const nrmse = require('./src/nrmse/errorMetrics.js');
+const { nrmse } = require('./src/nrmse/index.js');
-const state = require('./src/state/state.js');
+const { state } = require('./src/state/index.js');
 const convert = require('./src/convert/index.js');
 const MenuManager = require('./src/menu/index.js');
-const predict = require('./src/predict/predict_class.js');
+const { predict, interpolation } = require('./src/predict/index.js');
-const interpolation = require('./src/predict/interpolation.js');
+const { PIDController, CascadePIDController, createPidController, createCascadePidController } = require('./src/pid/index.js');
-const childRegistrationUtils = require('./src/helper/childRegistrationUtils.js');
+const { loadCurve } = require('./datasets/assetData/curves/index.js'); //deprecated replace with load model data
-const { loadCurve } = require('./datasets/assetData/curves/index.js');
+const { loadModel } = require('./datasets/assetData/modelData/index.js');
+const { POSITIONS, POSITION_VALUES, isValidPosition } = require('./src/constants/positions.js');
+const Fysics = require('./src/convert/fysics.js');
 
 // Export everything
 module.exports = {
     predict,
     interpolation,
     configManager,
+    assetApiConfig,
     outputUtils,
     configUtils,
     logger,
@@ -43,6 +52,16 @@ module.exports = {
     coolprop,
     convert,
     MenuManager,
+    PIDController,
+    CascadePIDController,
+    createPidController,
+    createCascadePidController,
     childRegistrationUtils,
-    loadCurve
+    loadCurve, //deprecated replace with loadModel
+    loadModel,
+    gravity,
+    POSITIONS,
+    POSITION_VALUES,
+    isValidPosition,
+    Fysics
 };

package.json

@@ -9,11 +9,17 @@
     "./menuUtils":   "./src/helper/menuUtils.js",
     "./mathUtils":   "./src/helper/mathUtils.js",
     "./assetUtils":  "./src/helper/assetUtils.js",
-    "./outputUtils": "./src/helper/outputUtils.js"
+    "./outputUtils": "./src/helper/outputUtils.js",
+    "./helper": "./src/helper/index.js",
+    "./state": "./src/state/index.js",
+    "./predict": "./src/predict/index.js",
+    "./pid": "./src/pid/index.js",
+    "./nrmse": "./src/nrmse/index.js",
+    "./outliers": "./src/outliers/index.js"
   },
 
   "scripts": {
-    "test": "node test.js"
+    "test": "node --test test/*.test.js src/nrmse/errorMetric.test.js"
   },
   "repository": {
     "type": "git",
@@ -26,4 +32,4 @@
   ],
   "author": "Rene de Ren",
   "license": "SEE LICENSE"
-}
+}

src/configs/assetApiConfig.js

@@ -0,0 +1,16 @@
+const BASE_URL = 'http://localhost:8000';
+const AUTHORIZATION = '4a49332a-fc3e-11f0-bf0a-9457f8d645d9';
+const CSRF_TOKEN = 'dcWLY6luSVuQu4mIlKNCGlk3i9VzG9n3p2pxihcm';
+
+module.exports = {
+  baseUrl: BASE_URL,
+  registerPath: '/assets/store',
+  updatePath: (tag) => `/assets/${encodeURIComponent(tag)}/edit`,
+  updateMethod: 'POST',
+  headers: {
+    accept: 'application/json',
+    Authorization: AUTHORIZATION,
+    'Content-Type': 'application/json',
+    'X-CSRF-TOKEN': CSRF_TOKEN
+  }
+};

src/configs/baseConfig.json

@@ -0,0 +1,85 @@
+{
+  "general": {
+    "name": {
+      "default": "Unnamed Node",
+      "rules": { "type": "string", "description": "Human-readable name for this node." }
+    },
+    "id": {
+      "default": null,
+      "rules": { "type": "string", "nullable": true, "description": "Unique node identifier (set at runtime)." }
+    },
+    "unit": {
+      "default": "unitless",
+      "rules": { "type": "string", "description": "Default measurement unit." }
+    },
+    "logging": {
+      "logLevel": {
+        "default": "info",
+        "rules": {
+          "type": "enum",
+          "values": [
+            { "value": "debug", "description": "Verbose diagnostic messages." },
+            { "value": "info", "description": "General informational messages." },
+            { "value": "warn", "description": "Warning messages." },
+            { "value": "error", "description": "Error level messages only." }
+          ]
+        }
+      },
+      "enabled": {
+        "default": true,
+        "rules": { "type": "boolean", "description": "Enable or disable logging." }
+      }
+    }
+  },
+  "functionality": {
+    "softwareType": {
+      "default": "unknown",
+      "rules": { "type": "string", "description": "Software type identifier for parent-child registration." }
+    },
+    "role": {
+      "default": "Generic EVOLV node",
+      "rules": { "type": "string", "description": "Describes the functional role of this node." }
+    },
+    "positionVsParent": {
+      "default": "atEquipment",
+      "rules": {
+        "type": "enum",
+        "values": [
+          { "value": "upstream", "description": "Upstream of parent equipment." },
+          { "value": "atEquipment", "description": "At equipment level." },
+          { "value": "downstream", "description": "Downstream of parent equipment." }
+        ]
+      }
+    }
+  },
+  "asset": {
+    "uuid": {
+      "default": null,
+      "rules": { "type": "string", "nullable": true, "description": "Asset UUID from asset management system." }
+    },
+    "tagCode": {
+      "default": null,
+      "rules": { "type": "string", "nullable": true, "description": "Asset tag code." }
+    },
+    "supplier": {
+      "default": "Unknown",
+      "rules": { "type": "string", "description": "Equipment supplier." }
+    },
+    "category": {
+      "default": "sensor",
+      "rules": { "type": "string", "description": "Asset category." }
+    },
+    "type": {
+      "default": "Unknown",
+      "rules": { "type": "string", "description": "Asset type." }
+    },
+    "model": {
+      "default": "Unknown",
+      "rules": { "type": "string", "description": "Equipment model." }
+    },
+    "unit": {
+      "default": "unitless",
+      "rules": { "type": "string", "description": "Asset measurement unit." }
+    }
+  }
+}

src/configs/diffuser.json

@@ -0,0 +1,111 @@
+{
+  "general": {
+    "name": {
+      "default": "Diffuser",
+      "rules": {
+        "type": "string",
+        "description": "A human-readable name for this diffuser zone."
+      }
+    },
+    "id": {
+      "default": null,
+      "rules": {
+        "type": "string",
+        "nullable": true,
+        "description": "Unique identifier for this diffuser node."
+      }
+    },
+    "unit": {
+      "default": "Nm3/h",
+      "rules": {
+        "type": "string",
+        "description": "Default airflow unit for this diffuser."
+      }
+    },
+    "logging": {
+      "logLevel": {
+        "default": "info",
+        "rules": {
+          "type": "enum",
+          "values": [
+            { "value": "debug", "description": "Verbose diagnostic messages." },
+            { "value": "info", "description": "General informational messages." },
+            { "value": "warn", "description": "Warning messages." },
+            { "value": "error", "description": "Error level messages only." }
+          ]
+        }
+      },
+      "enabled": {
+        "default": true,
+        "rules": {
+          "type": "boolean",
+          "description": "Enable or disable logging."
+        }
+      }
+    }
+  },
+  "functionality": {
+    "softwareType": {
+      "default": "diffuser",
+      "rules": {
+        "type": "string",
+        "description": "Software type identifier for parent-child registration."
+      }
+    },
+    "role": {
+      "default": "Aeration diffuser",
+      "rules": {
+        "type": "string",
+        "description": "Describes the functional role of this node."
+      }
+    },
+    "positionVsParent": {
+      "default": "atEquipment",
+      "rules": {
+        "type": "enum",
+        "values": [
+          { "value": "upstream", "description": "Upstream of parent equipment." },
+          { "value": "atEquipment", "description": "At equipment level." },
+          { "value": "downstream", "description": "Downstream of parent equipment." }
+        ]
+      }
+    }
+  },
+  "diffuser": {
+    "number": {
+      "default": 1,
+      "rules": {
+        "type": "number",
+        "description": "Sequential diffuser zone number."
+      }
+    },
+    "elements": {
+      "default": 1,
+      "rules": {
+        "type": "number",
+        "description": "Number of diffuser elements in the zone."
+      }
+    },
+    "density": {
+      "default": 2.4,
+      "rules": {
+        "type": "number",
+        "description": "Installed diffuser density per square meter."
+      }
+    },
+    "waterHeight": {
+      "default": 0,
+      "rules": {
+        "type": "number",
+        "description": "Water column height above the diffuser."
+      }
+    },
+    "alfaFactor": {
+      "default": 0.7,
+      "rules": {
+        "type": "number",
+        "description": "Alpha factor used for oxygen transfer correction."
+      }
+    }
+  }
+}

src/configs/index.js

@@ -1,22 +1,52 @@
 const fs = require('fs');
 const path = require('path');
 
+/**
+ * Current config version. All config JSONs should declare this version.
+ * Bump this when the config schema changes.
+ */
+const CURRENT_CONFIG_VERSION = '1.0.0';
+
 class ConfigManager {
     constructor(relPath = '.') {
         this.configDir = path.resolve(__dirname, relPath);
+
+        /**
+         * Migration functions keyed by "fromVersion->toVersion".
+         * Each function receives a config object and returns the migrated config.
+         *
+         * Example:
+         *   this.migrations['1.0.0->1.1.0'] = (config) => {
+         *       config.newSection = { enabled: false };
+         *       return config;
+         *   };
+         */
+        this.migrations = {};
     }
 
     /**
-     * Load a configuration file by name
+     * Load a configuration file by name.
+     * Automatically checks the config version and migrates if needed.
      * @param {string} configName - Name of the config file (without .json extension)
-     * @returns {Object} Parsed configuration object
+     * @returns {Object} Parsed configuration object (migrated to current version if necessary)
      */
     getConfig(configName) {
         try {
             const configPath = path.resolve(this.configDir, `${configName}.json`);
             const configData = fs.readFileSync(configPath, 'utf8');
-            return JSON.parse(configData);
+            let config = JSON.parse(configData);
+
+            // Auto-migrate if version is behind current
+            const configVersion = config.version || '0.0.0';
+            if (configVersion !== CURRENT_CONFIG_VERSION) {
+                config = this.migrateConfig(config, configVersion, CURRENT_CONFIG_VERSION);
+            }
+
+            return config;
         } catch (error) {
+            if (error.message && error.message.startsWith('Failed to load config')) {
+                throw error;
+            }
             throw new Error(`Failed to load config '${configName}': ${error.message}`);
         }
     }
@@ -47,30 +77,118 @@ class ConfigManager {
         return fs.existsSync(configPath);
     }
 
-        createEndpoint(nodeName) {
+    /**
-            try {
+     * Build a runtime config by merging base schema + node schema + UI overrides.
-                // Load the config for this node
+     * Eliminates the need for each nodeClass to manually construct general/asset/functionality sections.
-                const config = this.getConfig(nodeName);
+     *
-                
+     * @param {string} nodeName - Node type name (e.g., 'valve', 'measurement')
-                // Convert config to JSON
+     * @param {object} uiConfig - Raw config from Node-RED UI
-                const configJSON = JSON.stringify(config, null, 2);
+     * @param {string} nodeId - Node-RED node ID (from node.id)
-
+     * @param {object} [domainConfig={}] - Domain-specific config sections (e.g., { scaling: {...}, smoothing: {...} })
-                // Assemble the complete script
+     * @returns {object} Merged runtime config
-                return `
+     *
-                // Create the namespace structure
+     * @example
-                window.EVOLV = window.EVOLV || {};
+     * const cfgMgr = new ConfigManager();
-                window.EVOLV.nodes = window.EVOLV.nodes || {};
+     * const config = cfgMgr.buildConfig('measurement', uiConfig, node.id, {
-                window.EVOLV.nodes.${nodeName} = window.EVOLV.nodes.${nodeName} || {};
+     *   scaling: { enabled: uiConfig.scaling, inputMin: uiConfig.i_min, ... },
-
+     *   smoothing: { smoothWindow: uiConfig.count, ... }
-                // Inject the pre-loaded config data directly into the namespace
+     * });
-                window.EVOLV.nodes.${nodeName}.config = ${configJSON};
+     */
-
+    buildConfig(nodeName, uiConfig, nodeId, domainConfig = {}) {
-                console.log('${nodeName} config loaded and endpoint created');
+        // Build base sections from UI config (common to ALL nodes)
-                `;
+        const config = {
-            } catch (error) {
+            general: {
-                throw new Error(`Failed to create endpoint for '${nodeName}': ${error.message}`);
+                name: uiConfig.name || nodeName,
+                id: nodeId,
+                unit: uiConfig.unit || 'unitless',
+                logging: {
+                    enabled: uiConfig.enableLog !== undefined ? uiConfig.enableLog : true,
+                    logLevel: uiConfig.logLevel || 'info'
+                }
+            },
+            functionality: {
+                softwareType: nodeName.toLowerCase(),
+                positionVsParent: uiConfig.positionVsParent || 'atEquipment',
+                distance: uiConfig.hasDistance ? uiConfig.distance : undefined
+            },
+            output: {
+                process: uiConfig.processOutputFormat || 'process',
+                dbase: uiConfig.dbaseOutputFormat || 'influxdb'
             }
+        };
+
+        // Add asset section if UI provides asset fields
+        if (uiConfig.supplier || uiConfig.category || uiConfig.assetType || uiConfig.model) {
+            config.asset = {
+                uuid: uiConfig.uuid || uiConfig.assetUuid || null,
+                tagCode: uiConfig.tagCode || uiConfig.assetTagCode || null,
+                supplier: uiConfig.supplier || 'Unknown',
+                category: uiConfig.category || 'sensor',
+                type: uiConfig.assetType || 'Unknown',
+                model: uiConfig.model || 'Unknown',
+                unit: uiConfig.unit || 'unitless'
+            };
         }
+
+        // Merge domain-specific sections
+        Object.assign(config, domainConfig);
+
+        return config;
+    }
+
+    /**
+     * Migrate a config object from one version to another by applying
+     * registered migration functions in sequence.
+     * @param {object} config - The config object to migrate
+     * @param {string} fromVersion - Current version of the config
+     * @param {string} toVersion - Target version
+     * @returns {object} Migrated config with updated version field
+     */
+    migrateConfig(config, fromVersion, toVersion) {
+        const migrationKey = `${fromVersion}->${toVersion}`;
+        const migrationFn = this.migrations[migrationKey];
+
+        if (migrationFn) {
+            config = migrationFn(config);
+        }
+
+        // Stamp the current version so it won't re-migrate
+        config.version = toVersion;
+        return config;
+    }
+
+    /**
+     * Get the base config schema (shared across all nodes).
+     * @returns {object} Base config schema
+     */
+    getBaseConfig() {
+        return this.getConfig('baseConfig');
+    }
+
+    createEndpoint(nodeName) {
+        try {
+            // Load the config for this node
+            const config = this.getConfig(nodeName);
+
+            // Convert config to JSON
+            const configJSON = JSON.stringify(config, null, 2);
+
+            // Assemble the complete script
+            return `
+            // Create the namespace structure
+            window.EVOLV = window.EVOLV || {};
+            window.EVOLV.nodes = window.EVOLV.nodes || {};
+            window.EVOLV.nodes.${nodeName} = window.EVOLV.nodes.${nodeName} || {};
+
+            // Inject the pre-loaded config data directly into the namespace
+            window.EVOLV.nodes.${nodeName}.config = ${configJSON};
+
+            console.log('${nodeName} config loaded and endpoint created');
+            `;
+        } catch (error) {
+            throw new Error(`Failed to create endpoint for '${nodeName}': ${error.message}`);
+        }
+    }
 }
 
-module.exports = ConfigManager;
+module.exports = ConfigManager;

src/configs/machineGroupControl.json

@@ -58,7 +58,7 @@
     },
     "functionality": {
       "softwareType": {
-        "default": "machineGroup",
+        "default": "machinegroupcontrol",
         "rules": {
           "type": "string",
           "description": "Logical name identifying the software type."

src/configs/measurement.json

@@ -117,6 +117,14 @@
                 "description": "Asset tag code which is a unique identifier for this asset. May be null if not assigned."
             }
         },
+        "tagNumber": {
+            "default": null,
+            "rules": {
+                "type": "string",
+                "nullable": true,
+                "description": "Asset tag number assigned by the asset registry. May be null if not assigned."
+            }
+        },
         "geoLocation": {
             "default": {
                 "x": 0,
@@ -166,6 +174,10 @@
                     {
                         "value": "sensor",
                         "description": "A device that detects or measures a physical property and responds to it (e.g. temperature sensor)."
+                    },
+                    {
+                        "value": "measurement",
+                        "description": "Measurement software category used by the asset menu for this node."
                     }
                 ]
             }
@@ -208,6 +220,52 @@
             }
         }
     },
+    "assetRegistration": {
+        "default": {
+            "profileId": 1,
+            "locationId": 1,
+            "processId": 1,
+            "status": "actief",
+            "childAssets": []
+        },
+        "rules": {
+            "type": "object",
+            "schema": {
+                "profileId": {
+                    "default": 1,
+                    "rules": {
+                        "type": "number"
+                    }
+                },
+                "locationId": {
+                    "default": 1,
+                    "rules": {
+                        "type": "number"
+                    }
+                },
+                "processId": {
+                    "default": 1,
+                    "rules": {
+                        "type": "number"
+                    }
+                },
+                "status": {
+                    "default": "actief",
+                    "rules": {
+                        "type": "string"
+                    }
+                },
+                "childAssets": {
+                    "default": [],
+                    "rules": {
+                        "type": "array",
+                        "itemType": "string",
+                        "minLength": 0
+                    }
+                }
+            }
+        }
+    },
     "scaling": {
         "enabled": {
             "default": false,

src/configs/monster.json

@@ -0,0 +1,256 @@
+{
+    "general": {
+        "name": {
+            "default": "Monster Configuration",
+            "rules": {
+                "type": "string",
+                "description": "A human-readable name or label for this configuration."
+            }
+        },
+        "id": {
+            "default": null,
+            "rules": {
+                "type": "string",
+                "nullable": true,
+                "description": "A unique identifier for this configuration. If not provided, defaults to null."
+            }
+        },
+        "unit": {
+            "default": "unitless",
+            "rules": {
+                "type": "string",
+                "description": "The unit for this configuration (e.g., 'meters', 'seconds', 'unitless')."
+            }
+        },
+        "logging": {
+            "logLevel": {
+                "default": "info",
+                "rules": {
+                    "type": "enum",
+                    "values": [
+                        {
+                            "value": "debug",
+                            "description": "Log messages are printed for debugging purposes."
+                        },
+                        {
+                            "value": "info",
+                            "description": "Informational messages are printed."
+                        },
+                        {
+                            "value": "warn",
+                            "description": "Warning messages are printed."
+                        },
+                        {
+                            "value": "error",
+                            "description": "Error messages are printed."
+                        }
+                    ]
+                }
+            },
+            "enabled": {
+                "default": true,
+                "rules": {
+                    "type": "boolean",
+                    "description": "Indicates whether logging is active. If true, log messages will be generated."
+                }
+            }
+        }
+    },
+    "functionality": {
+        "softwareType": {
+            "default": "monster",
+            "rules": {
+                "type": "string",
+                "description": "Specified software type for this configuration."
+            }
+        },
+        "role": {
+            "default": "samplingCabinet",
+            "rules": {
+                "type": "string",
+                "description": "Indicates the role this configuration plays (e.g., sensor, controller, etc.)."
+            }
+        }
+    },
+    "asset": {
+        "uuid": {
+            "default": null,
+            "rules": {
+                "type": "string",
+                "nullable": true,
+                "description": "Asset tag number which is a universally unique identifier for this asset. May be null if not assigned."
+            }
+        },
+        "geoLocation": {
+            "default": {
+                "x": 0,
+                "y": 0,
+                "z": 0
+            },
+            "rules": {
+                "type": "object",
+                "description": "An object representing the asset's physical coordinates or location.",
+                "schema": {
+                    "x": {
+                        "default": 0,
+                        "rules": {
+                            "type": "number",
+                            "description": "X coordinate of the asset's location."
+                        }
+                    },
+                    "y": {
+                        "default": 0,
+                        "rules": {
+                            "type": "number",
+                            "description": "Y coordinate of the asset's location."
+                        }
+                    },
+                    "z": {
+                        "default": 0,
+                        "rules": {
+                            "type": "number",
+                            "description": "Z coordinate of the asset's location."
+                        }
+                    }
+                }
+            }
+        },
+        "supplier": {
+            "default": "Unknown",
+            "rules": {
+                "type": "string",
+                "description": "The supplier or manufacturer of the asset."
+            }
+        },
+        "type": {
+            "default": "sensor",
+            "rules": {
+                "type": "enum",
+                "values": [
+                    {
+                        "value": "sensor",
+                        "description": "A device that detects or measures a physical property and responds to it (e.g. temperature sensor)."
+                    }
+                ]
+            }
+        },
+        "subType": {
+            "default": "pressure",
+            "rules": {
+                "type": "string",
+                "description": "A more specific classification within 'type'. For example, 'pressure' for a pressure sensor."
+            }
+        },
+        "model": {
+            "default": "Unknown",
+            "rules": {
+                "type": "string",
+                "description": "A user-defined or manufacturer-defined model identifier for the asset."
+            }
+        },
+        "emptyWeightBucket": {
+            "default": 3,
+            "rules": {
+                "type": "number",
+                "description": "The weight of the empty bucket in kilograms."
+            }
+        }
+    },
+    "constraints": {
+        "samplingtime": {
+            "default": 0,
+            "rules": {
+                "type": "number",
+                "description": "The time interval between sampling events (in seconds) if not using a flow meter."
+            }
+        },
+        "samplingperiod": {
+            "default": 24,
+            "rules": {
+                "type": "number",
+                "description": "The fixed period in hours in which a composite sample is collected."
+            }
+        },
+        "minVolume": {
+            "default": 5,
+            "rules": {
+                "type": "number",
+                "min": 5,
+                "description": "The minimum volume in liters."
+            }
+        },
+        "maxWeight": {
+            "default": 23,
+            "rules": {
+                "type": "number",
+                "max": 23,
+                "description": "The maximum weight in kilograms."
+            }
+        },
+        "subSampleVolume": {
+            "default": 50,
+            "rules": {
+                "type": "number",
+                "min": 50,
+                "max": 50,
+                "description": "The volume of each sub-sample in milliliters."
+            }
+        },
+        "storageTemperature": {
+            "default": {
+                "min": 1,
+                "max": 5
+            },
+            "rules": {
+                "type": "object",
+                "description": "Acceptable storage temperature range for samples in degrees Celsius.",
+                "schema": {
+                    "min": {
+                        "default": 1,
+                        "rules": {
+                            "type": "number",
+                            "min": 1,
+                            "description": "Minimum acceptable storage temperature in degrees Celsius."
+                        }
+                    },
+                    "max": {
+                        "default": 5,
+                        "rules": {
+                            "type": "number",
+                            "max": 5,
+                            "description": "Maximum acceptable storage temperature in degrees Celsius."
+                        }
+                    }
+                }
+            }
+        },
+        "flowmeter": {
+            "default": true,
+            "rules": {
+                "type": "boolean",
+                "description": "Indicates whether a flow meter is used for proportional sampling."
+            }
+        },
+        "closedSystem": {
+            "default": false,
+            "rules": {
+                "type": "boolean",
+                "description": "Indicates if the sampling system is closed (true) or open (false)."
+            }
+        },
+        "intakeSpeed": {
+            "default": 0.3,
+            "rules": {
+                "type": "number",
+                "description": "Minimum intake speed in meters per second."
+            }
+        },
+        "intakeDiameter": {
+            "default": 12,
+            "rules": {
+                "type": "number",
+                "description": "Minimum inner diameter of the intake tubing in millimeters."
+            }
+        }
+    }
+}

src/configs/pumpingStation.json

@@ -59,7 +59,7 @@
     },
     "functionality": {
         "softwareType": {
-            "default": "pumpingStation",
+            "default": "pumpingstation",
             "rules": {
                 "type": "string",
                 "description": "Specified software type used to locate the proper default configuration."
@@ -93,6 +93,14 @@
                 ]
             }
         },
+        "distance": {
+            "default": null,
+            "rules": {
+                "type": "number",
+                "nullable": true,
+                "description": "Optional distance to parent asset for registration metadata."
+            }
+        },
         "tickIntervalMs": {
             "default": 1000,
             "rules": {
@@ -150,7 +158,7 @@
             }
         },
         "type": {
-            "default": "pumpingStation",
+            "default": "pumpingstation",
             "rules": {
                 "type": "string",
                 "description": "Specific asset type used to identify this configuration."
@@ -299,6 +307,30 @@
                 "description": "Reference height to use to identify the height vs other basins with. This will say something more about the expected pressure loss in m head"
             }
         },
+        "minHeightBasedOn": {
+            "default": "outlet",
+            "rules": {
+                "type": "enum",
+                "values": [
+                    {
+                        "value": "inlet",
+                        "description": "Minimum height is based on inlet elevation."
+                    },
+                    {
+                        "value": "outlet",
+                        "description": "Minimum height is based on outlet elevation."
+                    }
+                ],
+                "description": "Basis for minimum height check: inlet or outlet."
+            }
+        },
+        "basinBottomRef": {
+            "default": 0,
+            "rules": {
+                "type": "number",
+                "description": "Absolute elevation reference of basin bottom."
+            }
+        },
         "staticHead": {
             "default": 12,
             "rules": {
@@ -348,13 +380,13 @@
         }
     },
     "control": {
-        "controlStrategy": {
+        "mode": {
-            "default": "levelBased",
+            "default": "levelbased",
             "rules": {
-                "type": "enum",
+                "type": "string",
                 "values": [
                     {
-                        "value": "levelBased",
+                        "value": "levelbased",
                         "description": "Lead and lag pumps are controlled by basin level thresholds."
                     },
                     {
@@ -362,9 +394,21 @@
                         "description": "Pumps target a discharge pressure setpoint."
                     },
                     {
-                        "value": "flowTracking",
+                        "value": "flowBased",
                         "description": "Pumps modulate to match measured inflow or downstream demand."
                     },
+                    {
+                        "value": "percentageBased",
+                        "description": "Pumps operate to maintain basin volume at a target percentage."
+                    },
+                    {
+                        "value":"powerBased",
+                        "description": "Pumps are controlled based on power consumption.For example, to limit peak power usage or operate within netcongestion limits."
+                    },
+                    {
+                        "value": "hybrid",
+                        "description": "Combines multiple control strategies for optimized operation."
+                    },
                     {
                         "value": "manual",
                         "description": "Pumps are operated manually or by an external controller."
@@ -373,94 +417,199 @@
                 "description": "Primary control philosophy for pump actuation."
             }
         },
-        "levelSetpoints": {
+        "allowedModes": {
-            "default": {
+            "default": [
-                "startLeadPump": 1.2,
+                "levelbased",
-                "stopLeadPump": 0.8,
+                "pressurebased",
-                "startLagPump": 1.8,
+                "flowbased",
-                "stopLagPump": 1.4,
+                "percentagebased",
-                "alarmHigh": 2.3,
+                "powerbased",
-                "alarmLow": 0.3
+                "manual"
-            },
+            ],
             "rules": {
-                "type": "object",
+                "type": "set",
-                "description": "Level thresholds that govern pump staging and alarms (m).",
+                "itemType": "string",
-                "schema": {
+                "description": "List of control modes that the station is permitted to operate in."
-                    "startLeadPump": {
+            }
-                        "default": 1.2,
+        },
-                        "rules": {
+        "levelbased": {
-                            "type": "number",
+            "startLevel": {
-                            "description": "Level that starts the lead pump."
+                "default": 1,
-                        }
+                "rules": {
-                    },
+                    "type": "number",
-                    "stopLeadPump": {
+                    "min": 0,
-                        "default": 0.8,
+                    "description": "start of pump / group when level reaches this in meters starting from bottom."
-                        "rules": {
+                }
-                            "type": "number",
+            },
-                            "description": "Level that stops the lead pump."
+            "stopLevel": {
-                        }
+                "default": 1,
-                    },
+                "rules": {
-                    "startLagPump": {
+                    "type": "number",
-                        "default": 1.8,
+                    "min": 0,
-                        "rules": {
+                    "description": "stop of pump / group when level reaches this in meters starting from bottom"
-                            "type": "number",
+                }
-                            "description": "Level that starts the lag pump."
+            },
-                        }
+            "minFlowLevel": {
-                    },
+                "default": 1,
-                    "stopLagPump": {
+                "rules": {
-                        "default": 1.4,
+                    "type": "number",
-                        "rules": {
+                    "min": 0,
-                            "type": "number",
+                    "description": "min level to scale the flow lineair"
-                            "description": "Level that stops the lag pump."
+                }
-                        }
+            },
-                    },
+            "maxFlowLevel": {
-                    "alarmHigh": {
+                "default": 4,
-                        "default": 2.3,
+                "rules": {
-                        "rules": {
+                    "type": "number",
-                            "type": "number",
+                    "min": 0,
-                            "description": "High level alarm threshold."
+                    "description": "max level to scale the flow lineair"
-                        }
-                    },
-                    "alarmLow": {
-                        "default": 0.3,
-                        "rules": {
-                            "type": "number",
-                            "description": "Low level alarm threshold."
-                        }
-                    }
                 }
             }
         },
-        "pressureSetpoint": {
+        "pressureBased": {
-            "default": 250,
+            "pressureSetpoint": {
-            "rules": {
+                "default": 1000,
-                "type": "number",
+                "rules": {
-                "min": 0,
+                    "type": "number",
-                "description": "Target discharge pressure when operating in pressure control (kPa)."
+                    "min": 0,
+                    "max": 5000,
+                    "description": "Target discharge pressure when operating in pressure control (kPa)."
+                }
             }
         },
-        "alarmDebounceSeconds": {
+        "flowBased": {
-            "default": 10,
+            "flowSetpoint": {
-            "rules": {
+                "default": 0,
-                "type": "number",
+                "rules": {
-                "min": 0,
+                    "type": "number",
-                "description": "Time a condition must persist before raising an alarm (seconds)."
+                    "min": 0,
+                    "description": "Target outflow setpoint used by flow-based control (m3/h)."
+                }
+            },
+            "flowDeadband": {
+                "default": 0,
+                "rules": {
+                    "type": "number",
+                    "min": 0,
+                    "description": "Allowed deadband around the outflow setpoint before corrective actions are taken (m3/h)."
+                }
+            },
+            "pid": {
+                "default": {},
+                "rules": {
+                    "type": "object",
+                    "schema": {
+                        "kp": {
+                            "default": 1.5,
+                            "rules": {
+                                "type": "number",
+                                "description": "Proportional gain for flow-based PID control."
+                            }
+                        },
+                        "ki": {
+                            "default": 0.05,
+                            "rules": {
+                                "type": "number",
+                                "description": "Integral gain for flow-based PID control."
+                            }
+                        },
+                        "kd": {
+                            "default": 0.01,
+                            "rules": {
+                                "type": "number",
+                                "description": "Derivative gain for flow-based PID control."
+                            }
+                        },
+                        "derivativeFilter": {
+                            "default": 0.2,
+                            "rules": {
+                                "type": "number",
+                                "min": 0,
+                                "max": 1,
+                                "description": "Derivative filter coefficient (0..1)."
+                            }
+                        },
+                        "rateUp": {
+                            "default": 30,
+                            "rules": {
+                                "type": "number",
+                                "min": 0,
+                                "description": "Maximum controller output increase rate (%/s)."
+                            }
+                        },
+                        "rateDown": {
+                            "default": 40,
+                            "rules": {
+                                "type": "number",
+                                "min": 0,
+                                "description": "Maximum controller output decrease rate (%/s)."
+                            }
+                        }
+                    }
+                }
+            },
+            "equalizationTargetPercent": {
+                "default": 60,
+                "rules": {
+                    "type": "number",
+                    "min": 0,
+                    "max": 100,
+                    "description": "Target fill percentage of the basin when operating in equalization mode."
+                }
+            },
+            "flowBalanceTolerance": {
+                "default": 5,
+                "rules": {
+                    "type": "number",
+                    "min": 0,
+                    "description": "Allowable error between inflow and outflow before adjustments are triggered (m3/h)."
+                }
             }
         },
-        "equalizationTargetPercent": {
+        "percentageBased": {
-            "default": 60,
+            "targetVolumePercent": {
-            "rules": {
+                "default": 50,
-                "type": "number",
+                "rules": {
-                "min": 0,
+                    "type": "number",
-                "max": 100,
+                    "min": 0,
-                "description": "Target fill percentage of the basin when operating in equalization mode."
+                    "max": 100,
+                    "description": "Target basin volume percentage to maintain during percentage-based control."
+                }
+            },
+            "tolerancePercent": {
+                "default": 5,
+                "rules": {
+                    "type": "number",
+                    "min": 0,
+                    "description": "Acceptable deviation from the target volume percentage before corrective action is taken."
+                }
             }
         },
-        "autoRestartAfterPowerLoss": {
+        "powerBased": {
-            "default": true,
+            "maxPowerKW": {
-            "rules": {
+                "default": 50,
-                "type": "boolean",
+                "rules": {
-                "description": "If true, pumps resume based on last known state after power restoration."
+                    "type": "number",
+                    "min": 0,
+                    "description": "Maximum allowable power consumption for the pumping station (kW)."
+                }
+            },
+            "powerControlMode": {
+                "default": "limit",
+                "rules": {
+                    "type": "enum",
+                    "values": [
+                        {
+                            "value": "limit",
+                            "description": "Limit pump operation to stay below the max power threshold."
+                        },
+                        {
+                            "value": "optimize",
+                            "description": "Optimize pump scheduling to minimize power usage while meeting flow demands."
+                        }
+                    ],
+                    "description": "Defines how power constraints are managed during operation."
+                }
             }
         },
         "manualOverrideTimeoutMinutes": {
@@ -470,13 +619,63 @@
                 "min": 0,
                 "description": "Duration after which a manual override expires automatically (minutes)."
             }
+        }
+    },
+    "safety": {
+        "enableDryRunProtection": {
+            "default": true,
+            "rules": {
+                "type": "boolean",
+                "description": "If true, pumps will be prevented from running if basin volume is too low."
+            }
         },
-        "flowBalanceTolerance": {
+        "dryRunThresholdPercent": {
-            "default": 5,
+            "default": 2,
             "rules": {
                 "type": "number",
                 "min": 0,
-                "description": "Allowable error between inflow and outflow before adjustments are triggered (m3/h)."
+                "max": 100,
+                "description": "Volume percentage below which dry run protection activates."
+            }
+        },
+        "dryRunDebounceSeconds": {
+            "default": 30,
+            "rules": {
+                "type": "number",
+                "min": 0,
+                "description": "Time the low-volume condition must persist before dry-run protection engages (seconds)."
+            }
+        },
+        "enableOverfillProtection": {
+            "default": true,
+            "rules": {
+                "type": "boolean",
+                "description": "If true, high level alarms and shutdowns will be enforced to prevent overfilling."
+            }
+        },
+        "overfillThresholdPercent": {
+            "default": 98,
+            "rules": {
+                "type": "number",
+                "min": 0,
+                "max": 100,
+                "description": "Volume percentage above which overfill protection activates."
+            }
+        },
+        "overfillDebounceSeconds": {
+            "default": 30,
+            "rules": {
+                "type": "number",
+                "min": 0,
+                "description": "Time the high-volume condition must persist before overfill protection engages (seconds)."
+            }
+        },
+        "timeleftToFullOrEmptyThresholdSeconds": {
+            "default": 0,
+            "rules": {
+                "type": "number",
+                "min": 0,
+                "description": "Time threshold (seconds) used to predict imminent full or empty conditions."
             }
         }
     },

src/configs/reactor.json

@@ -0,0 +1,202 @@
+{
+    "general": {
+      "name": {
+        "default": "Reactor",
+        "rules": {
+          "type": "string",
+          "description": "A human-readable name for this reactor."
+        }
+      },
+      "id": {
+        "default": null,
+        "rules": {
+          "type": "string",
+          "nullable": true,
+          "description": "Unique identifier for this reactor node."
+        }
+      },
+      "unit": {
+        "default": null,
+        "rules": {
+          "type": "string",
+          "nullable": true,
+          "description": "Default measurement unit."
+        }
+      },
+      "logging": {
+        "logLevel": {
+          "default": "info",
+          "rules": {
+            "type": "enum",
+            "values": [
+              { "value": "debug", "description": "Verbose diagnostic messages." },
+              { "value": "info", "description": "General informational messages." },
+              { "value": "warn", "description": "Warning messages." },
+              { "value": "error", "description": "Error level messages only." }
+            ]
+          }
+        },
+        "enabled": {
+          "default": true,
+          "rules": {
+            "type": "boolean",
+            "description": "Enable or disable logging."
+          }
+        }
+      }
+    },
+    "functionality": {
+      "softwareType": {
+        "default": "reactor",
+        "rules": {
+          "type": "string",
+          "description": "Software type identifier for parent-child registration."
+        }
+      },
+      "role": {
+        "default": "Biological reactor for wastewater treatment",
+        "rules": {
+          "type": "string",
+          "description": "Describes the functional role of this node."
+        }
+      },
+      "positionVsParent": {
+        "default": "atEquipment",
+        "rules": {
+          "type": "enum",
+          "values": [
+            { "value": "upstream", "description": "Upstream of parent equipment." },
+            { "value": "atEquipment", "description": "At equipment level." },
+            { "value": "downstream", "description": "Downstream of parent equipment." }
+          ]
+        }
+      }
+    },
+    "reactor": {
+      "reactor_type": {
+        "default": "CSTR",
+        "rules": {
+          "type": "enum",
+          "values": [
+            { "value": "CSTR", "description": "Continuous Stirred Tank Reactor - fully mixed." },
+            { "value": "PFR", "description": "Plug Flow Reactor - spatial gradient along length." }
+          ]
+        }
+      },
+      "volume": {
+        "default": 1000,
+        "rules": {
+          "type": "number",
+          "min": 0,
+          "unit": "m3",
+          "description": "Reactor volume in cubic meters."
+        }
+      },
+      "length": {
+        "default": 10,
+        "rules": {
+          "type": "number",
+          "min": 0,
+          "unit": "m",
+          "description": "Reactor length (relevant for PFR spatial discretization)."
+        }
+      },
+      "resolution_L": {
+        "default": 10,
+        "rules": {
+          "type": "integer",
+          "min": 1,
+          "description": "Number of spatial segments for PFR discretization."
+        }
+      },
+      "alpha": {
+        "default": 0.5,
+        "rules": {
+          "type": "number",
+          "min": 0,
+          "max": 1,
+          "description": "Dispersion coefficient alpha (0 = plug flow, 1 = fully mixed)."
+        }
+      },
+      "n_inlets": {
+        "default": 1,
+        "rules": {
+          "type": "integer",
+          "min": 1,
+          "description": "Number of inlet points along the reactor."
+        }
+      },
+      "kla": {
+        "default": 0,
+        "rules": {
+          "type": "number",
+          "min": 0,
+          "unit": "1/h",
+          "description": "Oxygen mass transfer coefficient (KLa)."
+        }
+      },
+      "timeStep": {
+        "default": 0.001,
+        "rules": {
+          "type": "number",
+          "min": 0.0001,
+          "unit": "h",
+          "description": "Integration time step for the reactor model."
+        }
+      }
+    },
+    "initialState": {
+      "S_O": {
+        "default": 0,
+        "rules": { "type": "number", "unit": "mg/L", "description": "Initial dissolved oxygen concentration." }
+      },
+      "S_I": {
+        "default": 30,
+        "rules": { "type": "number", "unit": "mg/L", "description": "Initial inert soluble COD." }
+      },
+      "S_S": {
+        "default": 70,
+        "rules": { "type": "number", "unit": "mg/L", "description": "Initial readily biodegradable substrate." }
+      },
+      "S_NH": {
+        "default": 25,
+        "rules": { "type": "number", "unit": "mg/L", "description": "Initial ammonium nitrogen." }
+      },
+      "S_N2": {
+        "default": 0,
+        "rules": { "type": "number", "unit": "mg/L", "description": "Initial dinitrogen (N2)." }
+      },
+      "S_NO": {
+        "default": 0,
+        "rules": { "type": "number", "unit": "mg/L", "description": "Initial nitrate and nitrite nitrogen." }
+      },
+      "S_HCO": {
+        "default": 5,
+        "rules": { "type": "number", "unit": "mmol/L", "description": "Initial alkalinity (bicarbonate)." }
+      },
+      "X_I": {
+        "default": 1000,
+        "rules": { "type": "number", "unit": "mg/L", "description": "Initial inert particulate COD." }
+      },
+      "X_S": {
+        "default": 100,
+        "rules": { "type": "number", "unit": "mg/L", "description": "Initial slowly biodegradable substrate." }
+      },
+      "X_H": {
+        "default": 2000,
+        "rules": { "type": "number", "unit": "mg/L", "description": "Initial heterotrophic biomass." }
+      },
+      "X_STO": {
+        "default": 0,
+        "rules": { "type": "number", "unit": "mg/L", "description": "Initial stored COD in biomass." }
+      },
+      "X_A": {
+        "default": 200,
+        "rules": { "type": "number", "unit": "mg/L", "description": "Initial autotrophic biomass." }
+      },
+      "X_TS": {
+        "default": 3500,
+        "rules": { "type": "number", "unit": "mg/L", "description": "Initial total suspended solids." }
+      }
+    }
+  }

src/configs/rotatingMachine.json

@@ -16,7 +16,7 @@
         }
       },
       "unit": {
-        "default": "m3/h",
+        "default": "l/s",
         "rules": {
           "type": "string",
           "description": "The default measurement unit for this configuration (e.g., 'meters', 'seconds', 'unitless')."
@@ -58,7 +58,7 @@
     },
     "functionality": {
       "softwareType": {
-        "default": "machine",
+        "default": "rotatingmachine",
           "rules": {
             "type": "string",
             "description": "Specified software type for this configuration."
@@ -110,6 +110,14 @@
                 "description": "Asset tag code which is a unique identifier for this asset. May be null if not assigned."
             }
         },
+      "tagNumber": {
+        "default": null,
+        "rules": {
+          "type": "string",
+          "nullable": true,
+          "description": "Optional asset tag number for legacy integrations."
+        }
+      },
       "geoLocation": {
         "default": {},
         "rules": {
@@ -175,6 +183,47 @@
                 "description": "The unit of measurement for this asset (e.g., 'meters', 'seconds', 'unitless')."
             }
         },
+      "curveUnits": {
+        "default": {
+          "pressure": "mbar",
+          "flow": "m3/h",
+          "power": "kW",
+          "control": "%"
+        },
+        "rules": {
+          "type": "object",
+          "schema": {
+            "pressure": {
+              "default": "mbar",
+              "rules": {
+                "type": "string",
+                "description": "Pressure unit used on the machine curve dimension axis."
+              }
+            },
+            "flow": {
+              "default": "m3/h",
+              "rules": {
+                "type": "string",
+                "description": "Flow unit used in the machine curve output (nq.y)."
+              }
+            },
+            "power": {
+              "default": "kW",
+              "rules": {
+                "type": "string",
+                "description": "Power unit used in the machine curve output (np.y)."
+              }
+            },
+            "control": {
+              "default": "%",
+              "rules": {
+                "type": "string",
+                "description": "Control axis unit used in the curve x-dimension."
+              }
+            }
+          }
+        }
+      },
       "accuracy": {
         "default": null,
         "rules": {
@@ -245,10 +294,6 @@
             {
               "value": "fysicalControl",
               "description": "Controlled via physical buttons or switches; ignores external automated commands."
-            },
-            {
-              "value": "maintenance",
-              "description": "No active control from auto, virtual, or fysical sources."
             }
           ],
           "description": "The operational mode of the machine."
@@ -260,7 +305,14 @@
           "type": "object",
           "schema":{
             "auto": {
-              "default": ["statusCheck", "execMovement", "execSequence", "emergencyStop"],
+              "default": [
+                "statuscheck",
+                "execmovement",
+                "execsequence",
+                "flowmovement",
+                "emergencystop",
+                "entermaintenance"
+              ],
               "rules": {
                 "type": "set",
                 "itemType": "string",
@@ -268,7 +320,14 @@
               }
             },
             "virtualControl": {
-              "default": ["statusCheck", "execMovement", "execSequence", "emergencyStop"],
+              "default": [
+                "statuscheck",
+                "execmovement",
+                "flowmovement",
+                "execsequence",
+                "emergencystop",
+                "exitmaintenance"
+              ],
               "rules": {
                 "type": "set",
                 "itemType": "string",
@@ -276,25 +335,22 @@
               }
             },
             "fysicalControl": {
-              "default": ["statusCheck", "emergencyStop"],
+              "default": [
+                "statuscheck",
+                "emergencystop",
+                "entermaintenance",
+                "exitmaintenance"
+              ],
               "rules": {
                 "type": "set",
                 "itemType": "string",
                 "description": "Actions allowed in fysicalControl mode."
               }
-            },
+            }
-            "maintenance": {
-              "default": ["statusCheck"],
-              "rules": {
-                "type": "set",
-                "itemType": "string",
-                "description": "Actions allowed in maintenance mode."
-              }
             }
           },
           "description": "Information about valid command sources recognized by the machine."
-        }
+        },
-      },
       "allowedSources":{
         "default": {},
         "rules": {
@@ -386,6 +442,22 @@
               "itemType": "string",
               "description": "Sequence of states for booting up the machine."
             }
+          },
+          "entermaintenance":{
+            "default": ["stopping","coolingdown","idle","maintenance"],
+            "rules": {
+              "type": "set",
+              "itemType": "string",
+              "description": "Sequence of states if the machine is running to put it in maintenance state"
+            }
+          },
+          "exitmaintenance":{
+            "default": ["off","idle"],
+            "rules": {
+              "type": "set",
+              "itemType": "string",
+              "description": "Sequence of states if the machine is running to put it in maintenance state"
+            }
           }
         }
       },
@@ -422,4 +494,4 @@
       }
     }
   }
-  
+  

src/configs/settler.json

@@ -0,0 +1,75 @@
+{
+    "general": {
+      "name": {
+        "default": "Settler",
+        "rules": {
+          "type": "string",
+          "description": "A human-readable name for this settler."
+        }
+      },
+      "id": {
+        "default": null,
+        "rules": {
+          "type": "string",
+          "nullable": true,
+          "description": "Unique identifier for this settler node."
+        }
+      },
+      "unit": {
+        "default": null,
+        "rules": {
+          "type": "string",
+          "nullable": true,
+          "description": "Default measurement unit."
+        }
+      },
+      "logging": {
+        "logLevel": {
+          "default": "info",
+          "rules": {
+            "type": "enum",
+            "values": [
+              { "value": "debug", "description": "Verbose diagnostic messages." },
+              { "value": "info", "description": "General informational messages." },
+              { "value": "warn", "description": "Warning messages." },
+              { "value": "error", "description": "Error level messages only." }
+            ]
+          }
+        },
+        "enabled": {
+          "default": true,
+          "rules": {
+            "type": "boolean",
+            "description": "Enable or disable logging."
+          }
+        }
+      }
+    },
+    "functionality": {
+      "softwareType": {
+        "default": "settler",
+        "rules": {
+          "type": "string",
+          "description": "Software type identifier for parent-child registration."
+        }
+      },
+      "role": {
+        "default": "Secondary settler for sludge separation",
+        "rules": {
+          "type": "string",
+          "description": "Describes the functional role of this node."
+        }
+      },
+      "positionVsParent": {
+        "default": "downstream",
+        "rules": {
+          "type": "enum",
+          "values": [
+            { "value": "upstream", "description": "Upstream of parent equipment." },
+            { "value": "atEquipment", "description": "At equipment level." },
+            { "value": "downstream", "description": "Downstream of parent equipment." }
+          ]
+        }
+      }
+    }
+  }

src/configs/valveGroupControl.json

@@ -60,7 +60,7 @@
     },
     "functionality": {
       "softwareType": {
-        "default": "valveGroupControl",
+        "default": "valvegroupcontrol",
           "rules": {
             "type": "string",
             "description": "Specified software type for this configuration."

src/constants/positions.js

@@ -0,0 +1,18 @@
+/**
+ * Canonical position constants for parent-child relationships.
+ * Use these instead of hardcoded strings throughout the codebase.
+ */
+const POSITIONS = Object.freeze({
+  UPSTREAM: 'upstream',
+  DOWNSTREAM: 'downstream',
+  AT_EQUIPMENT: 'atEquipment',
+  DELTA: 'delta',
+});
+
+const POSITION_VALUES = Object.freeze(Object.values(POSITIONS));
+
+function isValidPosition(pos) {
+  return POSITION_VALUES.includes(pos);
+}
+
+module.exports = { POSITIONS, POSITION_VALUES, isValidPosition };

src/convert/definitions/each.js

@@ -1,5 +1,4 @@
-var metric
+var metric;
-  , imperial;
 
 metric = {
   ea: {

src/convert/definitions/illuminance.js

@@ -30,8 +30,8 @@ module.exports = {
       ratio: 1/10.76391
     },
     imperial: {
-      unit: 'ft-cd',      
+      unit: 'ft-cd',
-	  ratio: 10.76391
+      ratio: 10.76391
     }
   }
 };

src/convert/definitions/partsPer.js

@@ -1,5 +1,4 @@
-var metric
+var metric;
-  , imperial;
 
 metric = {
   ppm: {

src/convert/index.js

@@ -127,7 +127,7 @@ Converter.prototype.toBest = function(options) {
   if(!this.origin)
     throw new Error('.toBest must be called after .from');
 
-  var options = Object.assign({
+  options = Object.assign({
     exclude: [],
     cutOffNumber: 1,
   }, options)
@@ -249,7 +249,7 @@ Converter.prototype.list = function (measure) {
 Converter.prototype.throwUnsupportedUnitError = function (what) {
   var validUnits = [];
 
-  each(measures, function (systems, measure) {
+  each(measures, function (systems, _measure) {
     each(systems, function (units, system) {
       if(system == '_anchors')
         return false;
@@ -268,22 +268,22 @@ Converter.prototype.throwUnsupportedUnitError = function (what) {
 Converter.prototype.possibilities = function (measure) {
   var possibilities = [];
   if(!this.origin && !measure) {
-	  each(keys(measures), function (measure){
+    each(keys(measures), function (measure){
-		  each(measures[measure], function (units, system) {
+      each(measures[measure], function (units, system) {
-		    if(system == '_anchors')
+        if(system == '_anchors')
-		      return false;
+          return false;
 
-		    possibilities = possibilities.concat(keys(units));
+        possibilities = possibilities.concat(keys(units));
-		  });
+      });
-	  });
+    });
   } else {
-	  measure = measure || this.origin.measure;
+    measure = measure || this.origin.measure;
-	  each(measures[measure], function (units, system) {
+    each(measures[measure], function (units, system) {
-	    if(system == '_anchors')
+      if(system == '_anchors')
-	      return false;
+        return false;
 
-	    possibilities = possibilities.concat(keys(units));
+      possibilities = possibilities.concat(keys(units));
-	  });
+    });
   }
 
   return possibilities;

src/convert/lodash/lodash._basecreate/index.js

@@ -7,7 +7,6 @@
  * Available under MIT license <http://lodash.com/license>
  */
 var isObject = require('./../lodash.isobject'),
-    noop = require('./../lodash.noop'),
     reNative = require('./../lodash._renative');
 
 /* Native method shortcuts for methods with the same name as other `lodash` methods */
@@ -21,12 +20,12 @@ var nativeCreate = reNative.test(nativeCreate = Object.create) && nativeCreate;
  * @param {Object} prototype The object to inherit from.
  * @returns {Object} Returns the new object.
  */
-function baseCreate(prototype, properties) {
+function baseCreate(prototype, _properties) { // eslint-disable-line no-func-assign
   return isObject(prototype) ? nativeCreate(prototype) : {};
 }
 // fallback for browsers without `Object.create`
 if (!nativeCreate) {
-  baseCreate = (function() {
+  baseCreate = (function() { // eslint-disable-line no-func-assign
     function Object() {}
     return function(prototype) {
       if (isObject(prototype)) {

src/convert/lodash/lodash._createwrapper/index.js

@@ -47,7 +47,7 @@ function createWrapper(func, bitmask, partialArgs, partialRightArgs, thisArg, ar
   var isBind = bitmask & 1,
       isBindKey = bitmask & 2,
       isCurry = bitmask & 4,
-      isCurryBound = bitmask & 8,
+      /* isCurryBound = bitmask & 8, */
       isPartial = bitmask & 16,
       isPartialRight = bitmask & 32;
 

src/convert/lodash/lodash._setbinddata/index.js

@@ -24,7 +24,7 @@ var defineProperty = (function() {
     var o = {},
         func = reNative.test(func = Object.defineProperty) && func,
         result = func(o, o, o) && func;
-  } catch(e) { }
+  } catch(e) { /* intentionally empty */ }
   return result;
 }());
 

src/convert/lodash/lodash.bind/index.js

@@ -7,7 +7,6 @@
  * Available under MIT license <http://lodash.com/license>
  */
 var createWrapper = require('./../lodash._createwrapper'),
-    reNative = require('./../lodash._renative'),
     slice = require('./../lodash._slice');
 
 /**

src/coolprop-node/src/index.js

@@ -3,11 +3,61 @@ const customRefs = require('./refData.js');
 
 class CoolPropWrapper {
     constructor() {
+
         this.initialized = false;
         this.defaultRefrigerant = null;
         this.defaultTempUnit = 'K';    // K, C, F
         this.defaultPressureUnit = 'Pa' // Pa, kPa, bar, psi
         this.customRef = false;
+        this.PropsSI = this._propsSI.bind(this);
+
+
+        // 🔹 Wastewater correction options (defaults)
+        this._ww = {
+            enabled: true,
+            tss_g_per_L: 3.5,       // default MLSS / TSS
+            density_k: 2e-4,        // +0.02% per g/L
+            viscosity_k: 0.07,      // +7% per g/L (clamped)
+            viscosity_max_gpl: 4    // cap effect at 4 g/L
+        };
+
+        this._initPromise = null;
+        this._autoInit({ refrigerant: 'Water' });
+
+    }
+
+    _isWastewaterFluid(fluidRaw) {
+        if (!fluidRaw) return false;
+        const token = String(fluidRaw).trim().toLowerCase();
+        return token === 'wastewater' || token.startsWith('wastewater:');
+    }
+
+    _parseWastewaterFluid(fluidRaw) {
+        if (!this._isWastewaterFluid(fluidRaw)) return null;
+            const ww = { ...this._ww };
+            const [, tail] = String(fluidRaw).split(':');
+            if (tail) {
+                tail.split(',').forEach(pair => {
+                    const [key, value] = pair.split('=').map(s => s.trim().toLowerCase());
+                    if (key === 'tss' && !Number.isNaN(Number(value))) {
+                        ww.tss_g_per_L = Number(value);
+                    }
+                });
+            }
+        return ww;
+    }
+
+    _applyWastewaterCorrection(outputKey, baseValue, ww) {
+        if (!Number.isFinite(baseValue) || !ww || !ww.enabled) return baseValue;
+        switch (outputKey.toUpperCase()) {
+            case 'D': // density
+                return baseValue * (1 + ww.density_k * ww.tss_g_per_L);
+            case 'V': // viscosity
+                const effTss = Math.min(ww.tss_g_per_L, ww.viscosity_max_gpl);
+                return baseValue * (1 + ww.viscosity_k * effTss);
+            default:
+                return baseValue;
+        }
     }
 
     // Temperature conversion helpers
@@ -407,13 +457,31 @@ class CoolPropWrapper {
         }
     }
 
-    // Direct access to CoolProp functions
+    _autoInit(defaults) {
-    async getPropsSI() {
+        if (!this._initPromise) {
-        if(!this.initialized) {
+            this._initPromise = this.init(defaults);
-            await coolprop.init();
         }
-        return coolprop.PropsSI;
+        return this._initPromise;
     }
+
+    _propsSI(outputKey, inKey1, inVal1, inKey2, inVal2, fluidRaw) {
+        if (!this.initialized) {
+            // Start init if no one else asked yet
+            this._autoInit({ refrigerant: this.defaultRefrigerant || 'Water' });
+            throw new Error('CoolProp is still warming up, retry PropsSI in a moment');
+        }
+        const ww = this._parseWastewaterFluid(fluidRaw);
+        const fluid = ww ? 'Water' : (this.customRefString || fluidRaw);
+        const baseValue = coolprop.PropsSI(outputKey, inKey1, inVal1, inKey2, inVal2, fluid);
+        return ww ? this._applyWastewaterCorrection(outputKey, baseValue, ww) : baseValue;
+    }
+
+    //Access to coolprop
+    async getPropsSI() {
+        await this._ensureInit({ refrigerant: this.defaultRefrigerant || 'Water' });
+        return this.PropsSI;
+    }
+    
 }
 
 module.exports = new CoolPropWrapper();

src/helper/assertionUtils.js

@@ -16,7 +16,7 @@ class Assertions {
     assertNoNaN(arr, label = "array") {
         if (Array.isArray(arr)) {
             for (const el of arr) {
-                assertNoNaN(el, label);
+                this.assertNoNaN(el, label);
             }
         } else {
             if (Number.isNaN(arr)) {
@@ -26,4 +26,4 @@ class Assertions {
     }
 }
 
-module.exports = Assertions;
+module.exports = Assertions;

src/helper/assetUtils.js

@@ -1,3 +1,244 @@
-export function getAssetVariables() {
+const http = require('node:http');
+const https = require('node:https');
+const { URL } = require('node:url');
+const { assetCategoryManager } = require('../../datasets/assetData');
 
-}
+function toNumber(value, fallback = 1) {
+  const result = Number(value);
+  return Number.isFinite(result) && result > 0 ? result : fallback;
+}
+
+function toArray(value = []) {
+  if (Array.isArray(value)) {
+    return value.filter((item) => typeof item !== 'undefined' && item !== null);
+  }
+  if (typeof value === 'string' && value.trim()) {
+    return [value.trim()];
+  }
+  if (typeof value === 'number') {
+    return [value];
+  }
+  return [];
+}
+
+function findModelMetadata(selection = {}) {
+  if (!selection) {
+    return null;
+  }
+
+  const categoryKey = selection.softwareType || 'measurement';
+  if (!assetCategoryManager.hasCategory(categoryKey)) {
+    return null;
+  }
+
+  const suppliers = assetCategoryManager.getCategory(categoryKey).suppliers || [];
+  const supplierMatch = (entry, value) => {
+    if (!entry || !value) return false;
+    const key = value.toString().toLowerCase();
+    return (
+      (entry.id && entry.id.toLowerCase() === key) ||
+      (entry.name && entry.name.toLowerCase() === key)
+    );
+  };
+
+  const supplier = suppliers.find((item) => supplierMatch(item, selection.supplier));
+  const types = supplier?.types || [];
+  const type = types.find((item) => supplierMatch(item, selection.assetType));
+  const models = type?.models || [];
+  const model = models.find((item) => supplierMatch(item, selection.model));
+
+  return model || null;
+}
+
+function buildAssetPayload({ assetSelection = {}, registrationDefaults = {} }) {
+  const defaults = {
+    profileId: 1,
+    locationId: 1,
+    processId: 1,
+    status: 'actief',
+    childAssets: [],
+    ...registrationDefaults
+  };
+
+  const metadata = assetSelection.modelMetadata || findModelMetadata(assetSelection) || {};
+  const rawName = assetSelection.assetName || assetSelection.name || assetSelection.assetType || assetSelection.model;
+  const assetName = (rawName || 'Measurement asset').toString();
+  const assetDescription = (assetSelection.assetDescription || assetSelection.description || assetName).toString();
+
+  const modelId = metadata.product_model_id ?? metadata.id ?? assetSelection.modelId ?? assetSelection.model ?? null;
+
+  const payload = {
+    profile_id: toNumber(defaults.profileId, 1),
+    location_id: toNumber(defaults.locationId, 1),
+    process_id: toNumber(defaults.processId, 1),
+    asset_name: assetName,
+    asset_description: assetDescription,
+    asset_status: (assetSelection.assetStatus || defaults.status || 'actief').toString(),
+    product_model_id: modelId,
+    product_model_uuid: metadata.product_model_uuid || metadata.uuid || null,
+    child_assets: toArray(defaults.childAssets)
+  };
+
+  const validation = [];
+  const missing = [];
+  const tooLong = [];
+  const invalid = [];
+
+  if (!payload.asset_name) {
+    missing.push('asset_name');
+  } else if (payload.asset_name.length > 100) {
+    tooLong.push('asset_name');
+  }
+
+  if (!payload.asset_status) {
+    missing.push('asset_status');
+  } else if (payload.asset_status.length > 20) {
+    tooLong.push('asset_status');
+  }
+
+  if (!Number.isInteger(payload.location_id)) {
+    invalid.push('location_id');
+  }
+  if (!Number.isInteger(payload.process_id)) {
+    invalid.push('process_id');
+  }
+  if (!Number.isInteger(payload.profile_id)) {
+    invalid.push('profile_id');
+  }
+
+  if (!Number.isInteger(payload.product_model_id)) {
+    invalid.push('product_model_id');
+  }
+
+  if (!Array.isArray(payload.child_assets)) {
+    invalid.push('child_assets');
+  }
+
+  if (missing.length) {
+    validation.push(`missing: ${missing.join(', ')}`);
+  }
+  if (tooLong.length) {
+    validation.push(`too long: ${tooLong.join(', ')}`);
+  }
+  if (invalid.length) {
+    validation.push(`invalid type: ${invalid.join(', ')}`);
+  }
+
+  if (validation.length) {
+    console.warn('[assetUtils] payload validation', validation.join(' | '));
+  } else {
+    console.info('[assetUtils] payload validation ok');
+  }
+
+  const tagNumber = typeof assetSelection.tagNumber === 'string' && assetSelection.tagNumber.trim()
+    ? assetSelection.tagNumber.trim()
+    : null;
+
+  return {
+    payload,
+    tagNumber,
+    isUpdate: Boolean(tagNumber)
+  };
+}
+
+function normalizeHeaders(headers = {}, body = '') {
+  const normalized = { ...headers };
+  if (!Object.prototype.hasOwnProperty.call(normalized, 'Content-Length')) {
+    normalized['Content-Length'] = Buffer.byteLength(body);
+  }
+  return normalized;
+}
+
+function prepareUrl(baseUrl = '', path = '') {
+  const trimmedBase = (baseUrl || '').replace(/\/+$/g, '').replace(/\\/g, '/');
+  const trimmedPath = path.startsWith('/') ? path : `/${path}`;
+  if (!trimmedBase) {
+    return trimmedPath;
+  }
+  return `${trimmedBase}${trimmedPath}`;
+}
+
+function sendHttpRequest(url, method, headers = {}, body = '') {
+  const parsedUrl = new URL(url, 'http://localhost');
+  const agent = parsedUrl.protocol === 'https:' ? https : http;
+  const requestOptions = {
+    method,
+    hostname: parsedUrl.hostname,
+    port: parsedUrl.port || (parsedUrl.protocol === 'https:' ? 443 : 80),
+    path: `${parsedUrl.pathname}${parsedUrl.search}`,
+    headers: normalizeHeaders(headers, body)
+  };
+
+  return new Promise((resolve, reject) => {
+    const req = agent.request(requestOptions, (res) => {
+      let raw = '';
+      res.setEncoding('utf8');
+      res.on('data', (chunk) => { raw += chunk; });
+      res.on('end', () => resolve({ status: res.statusCode, body: raw }));
+    });
+
+    req.on('error', reject);
+    if (body) {
+      req.write(body);
+    }
+    req.end();
+  });
+}
+
+function parseApiResponse(raw, status) {
+  try {
+    const parsed = JSON.parse(raw);
+    return {
+      success: parsed.success === true,
+      data: parsed.data || null,
+      message: parsed.message || (status >= 400 ? `HTTP ${status}` : 'Result returned')
+    };
+  } catch (error) {
+    return {
+      success: false,
+      data: raw,
+      message: `Unable to decode asset API response: ${error.message}`
+    };
+  }
+}
+
+async function syncAsset({ assetSelection = {}, registrationDefaults = {}, apiConfig = {}, nodeContext = {} }) {
+  const { payload, tagNumber, isUpdate } = buildAssetPayload({ assetSelection, registrationDefaults });
+  if (!apiConfig || !apiConfig.baseUrl) {
+    const message = 'Asset API configuration is missing';
+    console.warn('[assetUtils] ' + message, { nodeContext });
+    return { success: false, data: null, message };
+  }
+
+  const path = isUpdate && tagNumber && typeof apiConfig.updatePath === 'function'
+    ? apiConfig.updatePath(tagNumber)
+    : apiConfig.registerPath;
+  const url = prepareUrl(apiConfig.baseUrl, path);
+  const method = isUpdate ? (apiConfig.updateMethod || 'PUT') : 'POST';
+  const headers = apiConfig.headers || {};
+
+  console.info('[assetUtils] Sending asset update', { nodeContext, method, url });
+
+  try {
+    const response = await sendHttpRequest(url, method, headers, JSON.stringify(payload));
+    const parsed = parseApiResponse(response.body, response.status);
+    return {
+      success: parsed.success,
+      data: parsed.data,
+      message: parsed.message
+    };
+  } catch (error) {
+    console.error('[assetUtils] Asset API request failed', error, { nodeContext });
+    return {
+      success: false,
+      data: null,
+      message: `Asset API request error: ${error.message}`
+    };
+  }
+}
+
+module.exports = {
+  syncAsset,
+  buildAssetPayload,
+  findModelMetadata
+};

src/helper/childRegistrationUtils.js

@@ -6,8 +6,18 @@ class ChildRegistrationUtils {
   }
 
   async registerChild(child, positionVsParent, distance) {
-    const { softwareType } = child.config.functionality;
+    if (!child || typeof child !== 'object') {
-    const { name, id } = child.config.general;
+      this.logger?.warn('registerChild skipped: invalid child payload');
+      return false;
+    }
+    if (!child.config?.functionality || !child.config?.general) {
+      this.logger?.warn('registerChild skipped: missing child config/functionality/general');
+      return false;
+    }
+
+    const softwareType = (child.config.functionality.softwareType || '').toLowerCase();
+    const name = child.config.general.name || child.config.general.id || 'unknown';
+    const id = child.config.general.id || name;
 
     this.logger.debug(`Registering child: ${name} (${id}) as ${softwareType} at ${positionVsParent}`);
 
@@ -39,23 +49,25 @@ class ChildRegistrationUtils {
 
     // IMPORTANT: Only call parent registration - no automatic handling and if parent has this function then try to register this child
     if (typeof this.mainClass.registerChild === 'function') {
-      this.mainClass.registerChild(child, softwareType);
+      return this.mainClass.registerChild(child, softwareType);
     }
 
     this.logger.info(`✅ Child ${name} registered successfully`);
+    return true;
   }
 
   _storeChild(child, softwareType) {
     // Maintain your existing structure
     if (!this.mainClass.child) this.mainClass.child = {};
-    if (!this.mainClass.child[softwareType]) this.mainClass.child[softwareType] = {};
+    const typeKey = softwareType || 'unknown';
+    if (!this.mainClass.child[typeKey]) this.mainClass.child[typeKey] = {};
     
     const { category = "sensor" } = child.config.asset || {};
-    if (!this.mainClass.child[softwareType][category]) {
+    if (!this.mainClass.child[typeKey][category]) {
-      this.mainClass.child[softwareType][category] = [];
+      this.mainClass.child[typeKey][category] = [];
     }
     
-    this.mainClass.child[softwareType][category].push(child);
+    this.mainClass.child[typeKey][category].push(child);
   }
 
   // NEW: Utility methods for parent to use
@@ -95,4 +107,4 @@ class ChildRegistrationUtils {
   }
 }
 
-module.exports = ChildRegistrationUtils;
+module.exports = ChildRegistrationUtils;

src/helper/childRegistrationUtils_DEPRECATED.js

@@ -1,260 +0,0 @@
-// ChildRegistrationUtils.js
-class ChildRegistrationUtils {
-  constructor(mainClass) {
-    this.mainClass = mainClass; // Reference to the main class
-    this.logger = mainClass.logger;
-  }
-
-  async registerChild(child, positionVsParent) {
-
-    this.logger.debug(`Registering child: ${child.id} with position=${positionVsParent}`);
-    const { softwareType } = child.config.functionality;
-    const { name, id, unit } = child.config.general;
-    const { category = "", type = "" } = child.config.asset || {};
-    console.log(`Registering child: ${name}, id: ${id}, softwareType: ${softwareType}, category: ${category}, type: ${type}, positionVsParent: ${positionVsParent}` );
-    const emitter = child.emitter;
-
-    //define position vs parent in child
-    child.positionVsParent = positionVsParent;
-    child.parent = this.mainClass;
-
-    if (!this.mainClass.child) this.mainClass.child = {};
-    if (!this.mainClass.child[softwareType])
-      this.mainClass.child[softwareType] = {};
-    if (!this.mainClass.child[softwareType][category])
-      this.mainClass.child[softwareType][category] = {};
-    if (!this.mainClass.child[softwareType][category][type])
-      this.mainClass.child[softwareType][category][type] = {};
-
-    // Use an array to handle multiple categories
-    if (!Array.isArray(this.mainClass.child[softwareType][category][type])) {
-      this.mainClass.child[softwareType][category][type] = [];
-    }
-
-    // Push the new child to the array of the mainclass so we can track the childs
-    this.mainClass.child[softwareType][category][type].push({
-      name,
-      id,
-      unit,
-      emitter,
-    });
-
-    //then connect the child depending on the type type etc..
-    this.connectChild(
-      id,
-      softwareType,
-      emitter,
-      category,
-      child,
-      type,
-      positionVsParent
-    );
-  }
-
-  connectChild(
-    id,
-    softwareType,
-    emitter,
-    category,
-    child,
-    type,
-    positionVsParent
-  ) {
-    this.logger.debug(
-      `Connecting child id=${id}: desc=${softwareType}, category=${category},type=${type}, position=${positionVsParent}`
-    );
-
-    switch (softwareType) {
-      case "measurement":
-        this.logger.debug(
-          `Registering measurement child: ${id} with category=${category}`
-        );
-        this.connectMeasurement(child, type, positionVsParent);
-        break;
-
-      case "machine":
-        this.logger.debug(`Registering complete machine child: ${id}`);
-        this.connectMachine(child);
-        break;
-
-      case "valve":
-        this.logger.debug(`Registering complete valve child: ${id}`);
-        this.connectValve(child);
-        break;
-
-      case "machineGroup":
-        this.logger.debug(`Registering complete machineGroup child: ${id}`);
-        this.connectMachineGroup(child);
-        break;
-
-      case "actuator":
-        this.logger.debug(`Registering linear actuator child: ${id}`);
-        this.connectActuator(child,positionVsParent);
-        break;
-
-      default:
-        this.logger.error(`Child registration unrecognized desc: ${desc}`);
-        this.logger.error(`Unrecognized softwareType: ${softwareType}`);
-    }
-  }
-
-  connectMeasurement(child, type, position) {
-    this.logger.debug(
-      `Connecting measurement child: ${type} with position=${position}`
-    );
-
-    // Check if type is valid
-    if (!type) {
-      this.logger.error(`Invalid type for measurement: ${type}`);
-      return;
-    }
-
-    // initialize the measurement to a number - logging each step for debugging
-    try {
-      this.logger.debug(
-        `Initializing measurement: ${type}, position: ${position} value: 0`
-      );
-      const typeResult = this.mainClass.measurements.type(type);
-      const variantResult = typeResult.variant("measured");
-      const positionResult = variantResult.position(position);
-      positionResult.value(0);
-
-      this.logger.debug(
-        `Subscribing on mAbs event for measurement: ${type}, position: ${position}`
-      );
-      // Listen for the mAbs event and update the measurement
-
-      this.logger.debug(
-        `Successfully initialized measurement: ${type}, position: ${position}`
-      );
-    } catch (error) {
-      this.logger.error(`Failed to initialize measurement: ${error.message}`);
-      return;
-    }
-
-    //testing new emitter strategy
-    child.measurements.emitter.on("newValue", (data) => {
-      this.logger.warn(
-        `Value change event received for measurement: ${type}, position: ${position}, value: ${data.value}`
-      );
-    });
-
-    child.emitter.on("mAbs", (value) => {
-      // Use the same method chaining approach that worked during initialization
-      this.mainClass.measurements
-        .type(type)
-        .variant("measured")
-        .position(position)
-        .value(value);
-      this.mainClass.updateMeasurement("measured", type, value, position);
-      //this.logger.debug(`--------->>>>>>>>>Updated measurement: ${type}, value: ${value}, position: ${position}`);
-    });
-    
-  }
-
-  connectMachine(machine) {
-    if (!machine) {
-      this.logger.error("Invalid machine provided.");
-      return;
-    }
-
-    const machineId = Object.keys(this.mainClass.machines).length + 1;
-    this.mainClass.machines[machineId] = machine;
-
-    this.logger.info(
-      `Setting up pressureChange listener for machine ${machineId}`
-    );
-
-    machine.emitter.on("pressureChange", () =>
-      this.mainClass.handlePressureChange(machine)
-    );
-
-    //update of child triggers the handler
-    this.mainClass.handleChildChange();
-
-    this.logger.info(`Machine ${machineId} registered successfully.`);
-  }
-
-  connectValve(valve) {
-    if (!valve) {
-      this.logger.warn("Invalid valve provided.");
-      return;
-    }
-    const valveId = Object.keys(this.mainClass.valves).length + 1;
-    this.mainClass.valves[valveId] = valve; // Gooit valve object in de valves attribute met valve objects
-
-    valve.state.emitter.on("positionChange", (data) => {
-      //ValveGroupController abboneren op klepstand verandering
-      this.mainClass.logger.debug(`Position change of valve detected: ${data}`);
-      this.mainClass.calcValveFlows();
-    }); //bepaal nieuwe flow per valve
-    valve.emitter.on("deltaPChange", () => {
-      this.mainClass.logger.debug("DeltaP change of valve detected");
-      this.mainClass.calcMaxDeltaP();
-    }); //bepaal nieuwe max deltaP
-
-    this.logger.info(`Valve ${valveId} registered successfully.`);
-  }
-
-  connectMachineGroup(machineGroup) {
-    if (!machineGroup) {
-        this.logger.warn("Invalid machineGroup provided.");
-        return;
-    }
-
-    try {
-    const machineGroupId = Object.keys(this.mainClass.machineGroups).length + 1;
-    this.mainClass.machineGroups[machineGroupId] = machineGroup; 
-    } catch (error) {
-      this.logger.warn(`Skip machinegroup connnection: ${error.message}`);
-    }
-
-    machineGroup.emitter.on("totalFlowChange", (data) => {
-      this.mainClass.logger.debug('Total flow change of machineGroup detected');
-      this.mainClass.handleInput("parent", "totalFlowChange", data)}); //Geef nieuwe totale flow door aan valveGrouControl
-
-    this.logger.info(`MachineGroup ${machineGroup.config.general.name} registered successfully.`);
-    }
-
-  connectActuator(actuator, positionVsParent) {
-    if (!actuator) {
-      this.logger.warn("Invalid actuator provided.");
-      return;
-    }
-
-    //Special case gateGroupControl
-    if (
-      this.mainClass.config.functionality.softwareType == "gateGroupControl"
-    ) {
-      if (Object.keys(this.mainClass.actuators).length < 2) {
-        if (positionVsParent == "downstream") {
-          this.mainClass.actuators[0] = actuator;
-        }
-
-        if (positionVsParent == "upstream") {
-          this.mainClass.actuators[1] = actuator;
-        }
-        //define emitters
-        actuator.state.emitter.on("positionChange", (data) => {
-          this.mainClass.logger.debug(`Position change of actuator detected: ${data}`);
-          this.mainClass.eventUpdate();
-        }); 
-
-        //define emitters
-        actuator.state.emitter.on("stateChange", (data) => {
-          this.mainClass.logger.debug(`State change of actuator detected: ${data}`);
-          this.mainClass.eventUpdate();
-        }); 
-
-      } else {
-        this.logger.error(
-          "Too many actuators registered. Only two are allowed."
-        );
-      }
-    }
-  }
-
-  //wanneer hij deze ontvangt is deltaP van een van de valves veranderd (kan ook zijn niet child zijn, maar dat maakt niet uit)
-}
-
-module.exports = ChildRegistrationUtils;

src/helper/configUtils.js

@@ -39,8 +39,8 @@ const Logger = require("./logger");
 
 class ConfigUtils {
     constructor(defaultConfig, IloggerEnabled , IloggerLevel) {
-        const loggerEnabled = IloggerEnabled || true;
+        const loggerEnabled = IloggerEnabled ?? true;
-        const loggerLevel = IloggerLevel || "warn";
+        const loggerLevel = IloggerLevel ?? "warn";
         this.logger = new Logger(loggerEnabled, loggerLevel, 'ConfigUtils');
         this.defaultConfig = defaultConfig;
         this.validationUtils = new ValidationUtils(loggerEnabled, loggerLevel);
@@ -73,17 +73,25 @@ class ConfigUtils {
         return updatedConfig;
     }
 
+    _isPlainObject(value) {
+        return Object.prototype.toString.call(value) === '[object Object]';
+    }
+
     // loop through objects and merge them obj1 will be updated with obj2 values
     mergeObjects(obj1, obj2) {
         for (let key in obj2) {
-            if (obj2.hasOwnProperty(key)) {
+            if (Object.prototype.hasOwnProperty.call(obj2, key)) {
-                if (typeof obj2[key] === 'object') {
+                const nextValue = obj2[key];
-                    if (!obj1[key]) {
+
+                if (Array.isArray(nextValue)) {
+                    obj1[key] = [...nextValue];
+                } else if (this._isPlainObject(nextValue)) {
+                    if (!this._isPlainObject(obj1[key])) {
                         obj1[key] = {};
                     }
-                    this.mergeObjects(obj1[key], obj2[key]);
+                    this.mergeObjects(obj1[key], nextValue);
                 } else {
-                    obj1[key] = obj2[key];
+                    obj1[key] = nextValue;
                 }
             }
         }

src/helper/endpointUtils.js

@@ -18,13 +18,102 @@ class EndpointUtils {
    * @param {string} nodeName     the name of the node (used in the URL)
    * @param {object} customHelpers  additional helper functions to inject
    */
-  createMenuUtilsEndpoint(RED, nodeName, customHelpers = {}) {
+  createMenuUtilsEndpoint(RED, nodeName, customHelpers = {}, options = {}) {
-    RED.httpAdmin.get(`/${nodeName}/resources/menuUtils.js`, (req, res) => {
+    const basePath = `/${nodeName}/resources`;
-      console.log(`Serving menuUtils.js for ${nodeName} node`);
+
-      res.set('Content-Type', 'application/javascript');
+    RED.httpAdmin.get(`${basePath}/menuUtilsData.json`, (req, res) => {
-      const browserCode = this.generateMenuUtilsCode(nodeName, customHelpers);
+      res.json(this.generateMenuUtilsData(nodeName, customHelpers, options));
-      res.send(browserCode);
     });
+
+    RED.httpAdmin.get(`${basePath}/menuUtils.legacy.js`, (req, res) => {
+      res.set('Content-Type', 'application/javascript');
+      res.send(this.generateLegacyMenuUtilsCode(nodeName, customHelpers));
+    });
+
+    RED.httpAdmin.get(`${basePath}/menuUtils.js`, (req, res) => {
+      res.set('Content-Type', 'application/javascript');
+      res.send(this.generateMenuUtilsBootstrap(nodeName));
+    });
+  }
+
+  generateMenuUtilsData(nodeName, customHelpers = {}, options = {}) {
+    const defaultHelpers = {
+      validateRequired: `function(value) {
+        return value != null && value.toString().trim() !== '';
+      }`,
+      formatDisplayValue: `function(value, unit) {
+        return \`${'${'}value} ${'${'}unit || ''}\`.trim();
+      }`,
+      validateScaling: `function(min, max) {
+        return !isNaN(min) && !isNaN(max) && Number(min) < Number(max);
+      }`,
+      validateUnit: `function(unit) {
+        return typeof unit === 'string' && unit.trim() !== '';
+      }`,
+    };
+
+    return {
+      nodeName,
+      helpers: { ...defaultHelpers, ...customHelpers },
+      options: {
+        autoLoadLegacy: options.autoLoadLegacy !== false,
+      },
+    };
+  }
+
+  generateMenuUtilsBootstrap(nodeName) {
+    return `
+// Stable bootstrap for EVOLV menu utils (${nodeName})
+(function() {
+  const nodeName = ${JSON.stringify(nodeName)};
+  const basePath = '/' + nodeName + '/resources';
+
+  window.EVOLV = window.EVOLV || {};
+  window.EVOLV.nodes = window.EVOLV.nodes || {};
+  window.EVOLV.nodes[nodeName] = window.EVOLV.nodes[nodeName] || {};
+  window.EVOLV.nodes[nodeName].utils = window.EVOLV.nodes[nodeName].utils || {};
+
+  function parseHelper(fnBody) {
+    try {
+      return (new Function('return (' + fnBody + ')'))();
+    } catch (error) {
+      console.error('[menuUtils] helper parse failed:', error);
+      return function() { return null; };
+    }
+  }
+
+  function loadLegacyIfNeeded(autoLoadLegacy) {
+    if (!autoLoadLegacy || typeof window.MenuUtils === 'function') return Promise.resolve();
+    return new Promise((resolve, reject) => {
+      const script = document.createElement('script');
+      script.src = basePath + '/menuUtils.legacy.js';
+      script.onload = resolve;
+      script.onerror = reject;
+      document.head.appendChild(script);
+    });
+  }
+
+  fetch(basePath + '/menuUtilsData.json')
+    .then(function(res) { return res.json(); })
+    .then(function(payload) {
+      const helperFns = {};
+      Object.entries(payload.helpers || {}).forEach(function(entry) {
+        helperFns[entry[0]] = parseHelper(entry[1]);
+      });
+
+      window.EVOLV.nodes[nodeName].utils.helpers = helperFns;
+      return loadLegacyIfNeeded(payload.options && payload.options.autoLoadLegacy);
+    })
+    .then(function() {
+      if (typeof window.MenuUtils === 'function' && !window.EVOLV.nodes[nodeName].utils.menuUtils) {
+        window.EVOLV.nodes[nodeName].utils.menuUtils = new window.MenuUtils();
+      }
+    })
+    .catch(function(error) {
+      console.error('[menuUtils] bootstrap failed for ' + nodeName, error);
+    });
+})();
+`;
   }
 
   /**
@@ -33,7 +122,7 @@ class EndpointUtils {
    * @param {object} customHelpers  map of name: functionString pairs
    * @returns {string}  a JS snippet to run in the browser
    */
-  generateMenuUtilsCode(nodeName, customHelpers = {}) {
+  generateLegacyMenuUtilsCode(nodeName, customHelpers = {}) {
     // Default helper implementations to expose alongside MenuUtils
     const defaultHelpers = {
       validateRequired: `function(value) {
@@ -101,6 +190,11 @@ ${helpersCode}
 console.log('Loaded EVOLV.nodes.${nodeName}.utils.menuUtils');
 `;
   }
+
+  // Backward-compatible alias.
+  generateMenuUtilsCode(nodeName, customHelpers = {}) {
+    return this.generateLegacyMenuUtilsCode(nodeName, customHelpers);
+  }
 }
 
 module.exports = EndpointUtils;

src/helper/formatters/csvFormatter.js

@@ -0,0 +1,44 @@
+/**
+ * CSV formatter
+ * Produces a single CSV line: timestamp,measurement,field1=val1,field2=val2,...
+ *
+ * Values are escaped if they contain commas or quotes.
+ *
+ * @param {string} measurement - The measurement name (e.g. node name)
+ * @param {object} metadata    - { fields, tags }
+ *   - fields: key/value pairs of changed data points
+ *   - tags:   flat key/value string pairs (included as columns)
+ * @returns {string} CSV-formatted line
+ */
+function format(measurement, metadata) {
+  const { fields, tags } = metadata;
+  const timestamp = new Date().toISOString();
+  const parts = [escapeCSV(timestamp), escapeCSV(measurement)];
+
+  // Append tags first, then fields
+  if (tags) {
+    for (const key of Object.keys(tags).sort()) {
+      parts.push(escapeCSV(`${key}=${tags[key]}`));
+    }
+  }
+
+  for (const key of Object.keys(fields).sort()) {
+    parts.push(escapeCSV(`${key}=${fields[key]}`));
+  }
+
+  return parts.join(',');
+}
+
+/**
+ * Escapes a value for safe inclusion in a CSV field.
+ * Wraps in double quotes if the value contains a comma, quote, or newline.
+ */
+function escapeCSV(value) {
+  const str = String(value);
+  if (str.includes(',') || str.includes('"') || str.includes('\n')) {
+    return '"' + str.replace(/"/g, '""') + '"';
+  }
+  return str;
+}
+
+module.exports = { format };

src/helper/formatters/index.js

@@ -0,0 +1,60 @@
+/**
+ * Formatter Registry
+ * ------------------
+ * Maps format names to formatter modules.
+ * Each formatter exports: format(measurement, metadata) => string|object
+ *
+ * Usage:
+ *   const { getFormatter, registerFormatter } = require('./formatters');
+ *   const fmt = getFormatter('json');
+ *   const output = fmt.format('pump1', { fields: {...}, tags: {...} });
+ */
+
+const influxdbFormatter = require('./influxdbFormatter');
+const jsonFormatter = require('./jsonFormatter');
+const csvFormatter = require('./csvFormatter');
+const processFormatter = require('./processFormatter');
+
+// Built-in registry
+const registry = {
+  influxdb: influxdbFormatter,
+  json: jsonFormatter,
+  csv: csvFormatter,
+  process: processFormatter,
+};
+
+/**
+ * Retrieve a formatter by name.
+ * @param {string} name - Format name (e.g. 'influxdb', 'json', 'csv')
+ * @returns {object} Formatter with a .format() method
+ * @throws {Error} If the format name is not registered
+ */
+function getFormatter(name) {
+  const formatter = registry[name];
+  if (!formatter) {
+    throw new Error(`Unknown output format: "${name}". Registered formats: ${Object.keys(registry).join(', ')}`);
+  }
+  return formatter;
+}
+
+/**
+ * Register a custom formatter at runtime.
+ * @param {string} name      - Format name
+ * @param {object} formatter - Object with a .format(measurement, metadata) method
+ */
+function registerFormatter(name, formatter) {
+  if (typeof formatter.format !== 'function') {
+    throw new Error('Formatter must have a .format(measurement, metadata) method');
+  }
+  registry[name] = formatter;
+}
+
+/**
+ * List all registered format names.
+ * @returns {string[]}
+ */
+function getRegisteredFormats() {
+  return Object.keys(registry);
+}
+
+module.exports = { getFormatter, registerFormatter, getRegisteredFormats };

src/helper/formatters/influxdbFormatter.js

@@ -0,0 +1,22 @@
+/**
+ * InfluxDB formatter
+ * Produces the structured object expected by Node-RED InfluxDB nodes:
+ *   { measurement, fields, tags, timestamp }
+ *
+ * @param {string} measurement - The measurement name (e.g. node name)
+ * @param {object} metadata    - { fields, tags }
+ *   - fields: key/value pairs of changed data points
+ *   - tags:   flat key/value string pairs (InfluxDB tags)
+ * @returns {string|object} Formatted payload (object for InfluxDB)
+ */
+function format(measurement, metadata) {
+  const { fields, tags } = metadata;
+  return {
+    measurement: measurement,
+    fields: fields,
+    tags: tags || {},
+    timestamp: new Date(),
+  };
+}
+
+module.exports = { format };

src/helper/formatters/jsonFormatter.js

@@ -0,0 +1,22 @@
+/**
+ * JSON formatter
+ * Produces a JSON string suitable for MQTT, REST APIs, etc.
+ *
+ * @param {string} measurement - The measurement name (e.g. node name)
+ * @param {object} metadata    - { fields, tags }
+ *   - fields: key/value pairs of changed data points
+ *   - tags:   flat key/value string pairs
+ * @returns {string} JSON-encoded string
+ */
+function format(measurement, metadata) {
+  const { fields, tags } = metadata;
+  const payload = {
+    measurement: measurement,
+    fields: fields,
+    tags: tags || {},
+    timestamp: new Date().toISOString(),
+  };
+  return JSON.stringify(payload);
+}
+
+module.exports = { format };

src/helper/formatters/processFormatter.js

@@ -0,0 +1,9 @@
+/**
+ * Process formatter
+ * Keeps the existing process-port behaviour: emit only changed fields as an object.
+ */
+function format(_measurement, metadata) {
+  return metadata.fields;
+}
+
+module.exports = { format };

src/helper/gravity.js

@@ -0,0 +1,90 @@
+/**
+ * Gravity calculations based on WGS-84 ellipsoid model.
+ * Author: Rene de Ren (Waterschap Brabantse Delta)
+ * License: EUPL-1.2
+ */
+
+class Gravity {
+  constructor() {
+    // Standard (conventional) gravity at 45° latitude, sea level
+    this.g0 = 9.80665; // m/s²
+  }
+
+  /**
+   * Returns standard gravity (constant)
+   * @returns {number} gravity in m/s²
+   */
+  getStandardGravity() {
+    return this.g0;
+  }
+
+  /**
+   * Computes local gravity based on latitude and elevation.
+   * Formula: WGS-84 normal gravity (Somigliana)
+   * @param {number} latitudeDeg  Latitude in degrees (−90 → +90)
+   * @param {number} elevationM   Elevation above sea level [m]
+   * @returns {number} gravity in m/s²
+   */
+  getLocalGravity(latitudeDeg, elevationM = 0) {
+    const phi = (latitudeDeg * Math.PI) / 180;
+    const sinPhi = Math.sin(phi);
+    const sin2 = sinPhi * sinPhi;
+    const sin2_2phi = Math.sin(2 * phi) ** 2;
+
+    // WGS-84 normal gravity on the ellipsoid
+    const gSurface =
+      9.780327 * (1 + 0.0053024 * sin2 - 0.0000058 * sin2_2phi);
+
+    // Free-air correction for elevation (~ −3.086×10⁻⁶ m/s² per m)
+    const gLocal = gSurface - 3.086e-6 * elevationM;
+    return gLocal;
+  }
+
+  /**
+   * Calculates hydrostatic pressure difference (ΔP = ρ g h)
+   * @param {number} density     Fluid density [kg/m³]
+   * @param {number} heightM     Height difference [m]
+   * @param {number} latitudeDeg Latitude (for local g)
+   * @param {number} elevationM  Elevation (for local g)
+   * @returns {number} Pressure difference [Pa]
+   */
+  pressureHead(density, heightM, latitudeDeg = 45, elevationM = 0) {
+    const g = this.getLocalGravity(latitudeDeg, elevationM);
+    return density * g * heightM;
+  }
+
+  /**
+   * Calculates weight force (F = m g)
+   * @param {number} massKg      Mass [kg]
+   * @param {number} latitudeDeg Latitude (for local g)
+   * @param {number} elevationM  Elevation (for local g)
+   * @returns {number} Force [N]
+   */
+  weightForce(massKg, latitudeDeg = 45, elevationM = 0) {
+    const g = this.getLocalGravity(latitudeDeg, elevationM);
+    return massKg * g;
+  }
+}
+
+module.exports = new Gravity();
+
+
+/*
+const gravity = gravity;
+
+// Standard gravity
+console.log('g₀ =', gravity.getStandardGravity(), 'm/s²');
+
+// Local gravity (Breda ≈ 51.6° N, 3 m elevation)
+console.log('g @ Breda =', gravity.getLocalGravity(51.6, 3).toFixed(6), 'm/s²');
+
+// Head pressure for 5 m water column at Breda
+console.log(
+  'ΔP =',
+  gravity.pressureHead(1000, 5, 51.6, 3).toFixed(1),
+  'Pa'
+);
+
+// Weight of 1 kg mass at Breda
+console.log('Weight =', gravity.weightForce(1, 51.6, 3).toFixed(6), 'N');
+*/

src/helper/index.js

@@ -0,0 +1,25 @@
+const assertions = require('./assertionUtils.js');
+const assetUtils = require('./assetUtils.js');
+const childRegistrationUtils = require('./childRegistrationUtils.js');
+const configUtils = require('./configUtils.js');
+const endpointUtils = require('./endpointUtils.js');
+const gravity = require('./gravity.js');
+const logger = require('./logger.js');
+const menuUtils = require('./menuUtils.js');
+const nodeTemplates = require('./nodeTemplates.js');
+const outputUtils = require('./outputUtils.js');
+const validation = require('./validationUtils.js');
+
+module.exports = {
+  assertions,
+  assetUtils,
+  childRegistrationUtils,
+  configUtils,
+  endpointUtils,
+  gravity,
+  logger,
+  menuUtils,
+  nodeTemplates,
+  outputUtils,
+  validation,
+};

src/helper/logger.js

@@ -44,7 +44,7 @@ class Logger {
       if (this.levels.includes(level)) {
         this.logLevel = level;
       } else {
-        console.error(`[ERROR ${nameModule}]: Invalid log level: ${level}`);
+        console.error(`[ERROR] -> ${this.nameModule}: Invalid log level: ${level}`);
       }
     }
   
@@ -54,4 +54,4 @@ class Logger {
     }
   }
   
-  module.exports = Logger;
+  module.exports = Logger;

src/helper/menu/dataFetching.js

@@ -0,0 +1,123 @@
+/**
+ * Data fetching methods for MenuUtils.
+ * Handles primary/fallback URL fetching and API calls.
+ */
+
+const dataFetching = {
+  async fetchData(url, fallbackUrl) {
+    try {
+      const response = await fetch(url);
+      if (!response.ok) throw new Error(`HTTP error! status: ${response.status}`);
+      const responsData =  await response.json();
+      //responsData
+      const data = responsData.data;
+      /* .map(item => {
+        const { vendor_name, ...rest } = item;
+        return {
+        name: vendor_name,
+        ...rest
+        };
+      }); */
+      console.log(url);
+      console.log("Response Data: ", data);
+      return data;
+
+    } catch (err) {
+      console.warn(
+        `Primary URL failed: ${url}. Trying fallback URL: ${fallbackUrl}`,
+        err
+      );
+      try {
+        const response = await fetch(fallbackUrl);
+        if (!response.ok)
+          throw new Error(`HTTP error! status: ${response.status}`);
+        return await response.json();
+      } catch (fallbackErr) {
+        console.error("Both primary and fallback URLs failed:", fallbackErr);
+        return [];
+      }
+    }
+  },
+
+  async fetchProjectData(url) {
+    try {
+      const response = await fetch(url);
+      if (!response.ok) throw new Error(`HTTP error! status: ${response.status}`);
+      const responsData =  await response.json();
+      console.log("Response Data: ", responsData);
+      return responsData;
+
+    } catch (err) {
+      /* intentionally empty */
+    }
+  },
+
+  // Save changes to API
+  async apiCall(node) {
+    try{
+        // OLFIANT when a browser refreshes the tag code is lost!!! fix this later!!!!!
+        // FIX UUID ALSO LATER
+
+        if(node.assetTagCode !== "" || node.assetTagCode !== null){ /* intentionally empty */ }
+        // API call to register or check asset in central database
+          let assetregisterAPI = node.configUrls.cloud.taggcodeAPI + "/asset/create_asset.php";
+
+          const assetModelId = node.modelMetadata.id; //asset_product_model_id
+          const uuid = node.uuid; //asset_product_model_uuid
+          const assetName =  node.assetType; //asset_name / type?
+          const description = node.name; // asset_description
+          const assetStatus = "actief"; //asset_status -> koppel aan enable / disable node ? or make dropdown ?
+          const assetProfileId = 1; //asset_profile_id  these are the rules to check if the childs are valid under this node (parent / child id?)
+          const child_assets = ["63247"]; //child_assets tagnummer of id?
+          const assetProcessId = node.processId; //asset_process_id
+          const assetLocationId = node.locationId; //asset_location_id
+          const tagCode = node.assetTagCode; // if already exists in the node information use it to tell the api it exists and it will update else we will get it from the api call
+          //console.log(`this is my tagCode: ${tagCode}`);
+
+          // Build base URL with required parameters
+          let apiUrl = `?asset_product_model_id=${assetModelId}&asset_product_model_uuid=${uuid}&asset_name=${assetName}&asset_description=${description}&asset_status=${assetStatus}&asset_profile_id=${assetProfileId}&asset_location_id=${assetLocationId}&asset_process_id=${assetProcessId}&child_assets=${child_assets}`;
+
+          // Only add tagCode to URL if it exists
+          if (tagCode) {
+              apiUrl += `&asset_tag_number=${tagCode}`;
+              console.log('hello there');
+          }
+
+          assetregisterAPI += apiUrl;
+          console.log("API call to register asset in central database", assetregisterAPI);
+
+          const response = await fetch(assetregisterAPI, {
+              method: "POST"
+          });
+
+          // Get the response text first
+          const responseText = await response.text();
+          console.log("Raw API response:", responseText);
+
+          // Try to parse the JSON, handling potential parsing errors
+          let jsonResponse;
+          try {
+              jsonResponse = JSON.parse(responseText);
+          } catch (parseError) {
+              console.error("JSON Parsing Error:", parseError);
+              console.error("Response that could not be parsed:", responseText);
+              throw new Error("Failed to parse API response");
+          }
+
+          console.log(jsonResponse);
+
+          if(jsonResponse.success){
+              console.log(`${jsonResponse.message}, tag number: ${jsonResponse.asset_tag_number}, asset id: ${jsonResponse.asset_id}`);
+              // Save the asset tag number and id to the node
+          } else {
+              console.log("Asset not registered in central database");
+          }
+          return jsonResponse;
+
+      } catch (error) {
+          console.log("Error saving changes to asset register API", error);
+      }
+  },
+};
+
+module.exports = dataFetching;

src/helper/menu/dropdownPopulation.js

@@ -0,0 +1,283 @@
+/**
+ * Dropdown population methods for MenuUtils.
+ * Handles populating and cascading dropdown menus for assets, suppliers, models, units, etc.
+ */
+
+const dropdownPopulation = {
+  populateSmoothingMethods(configUrls, elements, node) {
+    this.fetchData(configUrls.cloud.config, configUrls.local.config)
+      .then((configData) => {
+        const smoothingMethods =
+          configData.smoothing?.smoothMethod?.rules?.values?.map(
+            (o) => o.value
+          ) || [];
+        this.populateDropdown(
+          elements.smoothMethod,
+          smoothingMethods,
+          node,
+          "smooth_method"
+        );
+      })
+      .catch((err) => {
+        console.error("Error loading smoothing methods", err);
+      });
+  },
+
+  populateInterpolationMethods(configUrls, elements, node) {
+    this.fetchData(configUrls.cloud.config, configUrls.local.config)
+      .then((configData) => {
+        const interpolationMethods =
+          configData?.interpolation?.type?.rules?.values.map((m) => m.value) ||
+          [];
+        this.populateDropdown(
+          elements.interpolationMethodInput,
+          interpolationMethods,
+          node,
+          "interpolationMethod"
+        );
+
+        // Find the selected method and use it to spawn 1 more field to fill in tension
+        //const selectedMethod = interpolationMethods.find(m => m === node.interpolationMethod);
+        this.initTensionToggles(elements, node);
+      })
+      .catch((err) => {
+        console.error("Error loading interpolation methods", err);
+      });
+  },
+
+  populateLogLevelOptions(logLevelSelect, configData, node) {
+    // debug log level
+    //console.log("Displaying configData => ", configData) ;
+
+    const logLevels =
+      configData?.general?.logging?.logLevel?.rules?.values?.map(
+        (l) => l.value
+      ) || [];
+
+    //console.log("Displaying logLevels => ", logLevels);
+
+    // Reuse your existing generic populateDropdown helper
+    this.populateDropdown(logLevelSelect, logLevels, node.logLevel);
+  },
+
+  //cascade dropdowns for asset type, supplier, subType, model, unit
+  fetchAndPopulateDropdowns(configUrls, elements, node) {
+    this.fetchData(configUrls.cloud.config, configUrls.local.config)
+      .then((configData) => {
+        const assetType = configData.asset?.type?.default;
+        const localSuppliersUrl = this.constructUrl(configUrls.local.taggcodeAPI,`${assetType}s`,"suppliers.json");
+        const cloudSuppliersUrl = this.constructCloudURL(configUrls.cloud.taggcodeAPI, "/vendor/get_vendors.php");
+
+        return this.fetchData(cloudSuppliersUrl, localSuppliersUrl)
+          .then((supplierData) => {
+
+            const suppliers = supplierData.map((supplier) => supplier.name);
+
+            // Populate suppliers dropdown and set up its change handler
+            return this.populateDropdown(
+              elements.supplier,
+              suppliers,
+              node,
+              "supplier",
+              function (selectedSupplier) {
+                if (selectedSupplier) {
+                  this.populateSubTypes(configUrls, elements, node, selectedSupplier);
+                }
+              }
+            );
+          })
+          .then(() => {
+            // If we have a saved supplier, trigger subTypes population
+            if (node.supplier) {
+              this.populateSubTypes(configUrls, elements, node, node.supplier);
+            }
+          });
+      })
+      .catch((error) => {
+        console.error("Error in initial dropdown population:", error);
+      });
+  },
+
+  populateSubTypes(configUrls, elements, node, selectedSupplier) {
+
+    this.fetchData(configUrls.cloud.config, configUrls.local.config)
+      .then((configData) => {
+        const assetType = configData.asset?.type?.default;
+        const supplierFolder = this.constructUrl( configUrls.local.taggcodeAPI, `${assetType}s`, selectedSupplier );
+
+        const localSubTypesUrl = this.constructUrl(supplierFolder, "subtypes.json");
+        const cloudSubTypesUrl = this.constructCloudURL(configUrls.cloud.taggcodeAPI, "/product/get_subtypesFromVendor.php?vendor_name=" + selectedSupplier);
+
+        return this.fetchData(cloudSubTypesUrl, localSubTypesUrl)
+          .then((subTypeData) => {
+            const subTypes = subTypeData.map((subType) => subType.name);
+
+            return this.populateDropdown(
+              elements.subType,
+              subTypes,
+              node,
+              "subType",
+              function (selectedSubType) {
+                if (selectedSubType) {
+                  // When subType changes, update both models and units
+                  this.populateModels(
+                    configUrls,
+                    elements,
+                    node,
+                    selectedSupplier,
+                    selectedSubType
+                  );
+                  this.populateUnitsForSubType(
+                    configUrls,
+                    elements,
+                    node,
+                    selectedSubType
+                  );
+                }
+              }
+            );
+          })
+          .then(() => {
+            // If we have a saved subType, trigger both models and units population
+            if (node.subType) {
+              this.populateModels(
+                configUrls,
+                elements,
+                node,
+                selectedSupplier,
+                node.subType
+              );
+              this.populateUnitsForSubType(configUrls, elements, node, node.subType);
+            }
+            //console.log("In fetch part of subtypes ");
+            // Store all data from selected model
+  /*           node["modelMetadata"] = modelData.find(
+              (model) => model.name === node.model
+            );
+            console.log("Model Metadata: ", node["modelMetadata"]); */
+          });
+      })
+      .catch((error) => {
+        console.error("Error populating subtypes:", error);
+      });
+  },
+
+  populateUnitsForSubType(configUrls, elements, node, selectedSubType) {
+    // Fetch the units data
+    this.fetchData(configUrls.cloud.units, configUrls.local.units)
+      .then((unitsData) => {
+        // Find the category that matches the subType name
+        const categoryData = unitsData.units.find(
+          (category) =>
+            category.category.toLowerCase() === selectedSubType.toLowerCase()
+        );
+
+        if (categoryData) {
+          // Extract just the unit values and descriptions
+          const units = categoryData.values.map((unit) => ({
+            value: unit.value,
+            description: unit.description,
+          }));
+
+          // Create the options array with descriptions as labels
+          const options = units.map((unit) => ({
+            value: unit.value,
+            label: `${unit.value} - ${unit.description}`,
+          }));
+
+          // Populate the units dropdown
+          this.populateDropdown(
+            elements.unit,
+            options.map((opt) => opt.value),
+            node,
+            "unit"
+          );
+
+          // If there's no currently selected unit but we have options, select the first one
+          if (!node.unit && options.length > 0) {
+            node.unit = options[0].value;
+            elements.unit.value = options[0].value;
+          }
+        } else {
+          // If no matching category is found, provide a default % option
+          const defaultUnits = [{ value: "%", description: "Percentage" }];
+          this.populateDropdown(
+            elements.unit,
+            defaultUnits.map((unit) => unit.value),
+            node,
+            "unit"
+          );
+          console.warn(
+            `No matching unit category found for subType: ${selectedSubType}`
+          );
+        }
+      })
+      .catch((error) => {
+        console.error("Error fetching units:", error);
+      });
+  },
+
+  populateModels(
+    configUrls,
+    elements,
+    node,
+    selectedSupplier,
+    selectedSubType
+  ) {
+
+    this.fetchData(configUrls.cloud.config, configUrls.local.config)
+      .then((configData) => {
+        const assetType = configData.asset?.type?.default;
+        // save assetType to fetch later
+        node.assetType = assetType;
+
+        const supplierFolder = this.constructUrl( configUrls.local.taggcodeAPI,`${assetType}s`,selectedSupplier);
+        const subTypeFolder = this.constructUrl(supplierFolder, selectedSubType);
+        const localModelsUrl = this.constructUrl(subTypeFolder, "models.json");
+        const cloudModelsUrl  = this.constructCloudURL(configUrls.cloud.taggcodeAPI, "/product/get_product_models.php?vendor_name=" + selectedSupplier + "&product_subtype_name=" + selectedSubType);
+
+        return this.fetchData(cloudModelsUrl, localModelsUrl).then((modelData) => {
+          const models = modelData.map((model) => model.name); // use this to populate the dropdown
+
+          // If a model is already selected, store its metadata immediately
+          if (node.model) {
+            node["modelMetadata"] = modelData.find((model) => model.name === node.model);
+          }
+
+          this.populateDropdown(elements.model, models, node, "model", (selectedModel) => {
+            // Store only the metadata for the selected model
+            node["modelMetadata"] = modelData.find((model) => model.name === selectedModel);
+          });
+          /*
+          console.log('hello here I am:');
+          console.log(node["modelMetadata"]);
+  */
+        });
+
+      })
+      .catch((error) => {
+        console.error("Error populating models:", error);
+      });
+  },
+
+  async populateDropdown(
+    htmlElement,
+    options,
+    node,
+    property,
+    callback
+  ) {
+    this.generateHtml(htmlElement, options, node[property]);
+
+    htmlElement.addEventListener("change", async (e) => {
+      const newValue = e.target.value;
+      console.log(`Dropdown changed: ${property} = ${newValue}`);
+      node[property] = newValue;
+
+      RED.nodes.dirty(true);
+      if (callback) await callback(newValue); // Ensure async callback completion
+    });
+  },
+};
+
+module.exports = dropdownPopulation;

src/helper/menu/htmlGeneration.js

@@ -0,0 +1,151 @@
+/**
+ * HTML generation and endpoint methods for MenuUtils.
+ * Handles generating dropdown HTML and serving MenuUtils code to the browser.
+ */
+
+const htmlGeneration = {
+  generateHtml(htmlElement, options, savedValue) {
+    htmlElement.innerHTML = options.length
+      ? `<option value="">Select...</option>${options
+          .map((opt) => `<option value="${opt}">${opt}</option>`)
+          .join("")}`
+      : "<option value=''>No options available</option>";
+
+    if (savedValue && options.includes(savedValue)) {
+      htmlElement.value = savedValue;
+    }
+  },
+
+  createMenuUtilsEndpoint(RED, nodeName, customHelpers = {}, options = {}) {
+    const basePath = `/${nodeName}/resources`;
+
+    RED.httpAdmin.get(`${basePath}/menuUtilsData.json`, function(req, res) {
+      res.json(this.generateMenuUtilsData(nodeName, customHelpers, options));
+    }.bind(this));
+
+    RED.httpAdmin.get(`${basePath}/menuUtils.legacy.js`, function(req, res) {
+      res.set('Content-Type', 'application/javascript');
+      const browserCode = this.generateLegacyMenuUtilsCode(nodeName, customHelpers);
+      res.send(browserCode);
+    }.bind(this));
+
+    RED.httpAdmin.get(`${basePath}/menuUtils.js`, function(req, res) {
+      res.set('Content-Type', 'application/javascript');
+      res.send(this.generateMenuUtilsBootstrap(nodeName));
+    }.bind(this));
+  },
+
+  generateMenuUtilsData(nodeName, customHelpers = {}, options = {}) {
+    const defaultHelpers = {
+      validateRequired: `function(value) {
+        return value && value.toString().trim() !== '';
+      }`,
+      formatDisplayValue: `function(value, unit) {
+        return \`\${value} \${unit || ''}\`.trim();
+      }`
+    };
+
+    return {
+      nodeName,
+      helpers: { ...defaultHelpers, ...customHelpers },
+      options: {
+        autoLoadLegacy: options.autoLoadLegacy !== false,
+      },
+    };
+  },
+
+  generateMenuUtilsBootstrap(nodeName) {
+    return `
+    // Stable bootstrap for EVOLV menu utils (${nodeName})
+    (function() {
+      const nodeName = ${JSON.stringify(nodeName)};
+      const basePath = '/' + nodeName + '/resources';
+
+      window.EVOLV = window.EVOLV || {};
+      window.EVOLV.nodes = window.EVOLV.nodes || {};
+      window.EVOLV.nodes[nodeName] = window.EVOLV.nodes[nodeName] || {};
+      window.EVOLV.nodes[nodeName].utils = window.EVOLV.nodes[nodeName].utils || {};
+
+      function parseHelper(fnBody) {
+        try {
+          return (new Function('return (' + fnBody + ')'))();
+        } catch (error) {
+          console.error('[menuUtils] helper parse failed:', error);
+          return function() { return null; };
+        }
+      }
+
+      function loadLegacyIfNeeded(autoLoadLegacy) {
+        if (!autoLoadLegacy || typeof window.MenuUtils === 'function') return Promise.resolve();
+        return new Promise((resolve, reject) => {
+          const script = document.createElement('script');
+          script.src = basePath + '/menuUtils.legacy.js';
+          script.onload = resolve;
+          script.onerror = reject;
+          document.head.appendChild(script);
+        });
+      }
+
+      fetch(basePath + '/menuUtilsData.json')
+        .then(function(res) { return res.json(); })
+        .then(function(payload) {
+          const helperFns = {};
+          Object.entries(payload.helpers || {}).forEach(function(entry) {
+            helperFns[entry[0]] = parseHelper(entry[1]);
+          });
+          window.EVOLV.nodes[nodeName].utils.helpers = helperFns;
+          return loadLegacyIfNeeded(payload.options && payload.options.autoLoadLegacy);
+        })
+        .then(function() {
+          if (typeof window.MenuUtils === 'function' && !window.EVOLV.nodes[nodeName].utils.menuUtils) {
+            window.EVOLV.nodes[nodeName].utils.menuUtils = new window.MenuUtils();
+          }
+        })
+        .catch(function(error) {
+          console.error('[menuUtils] bootstrap failed for ' + nodeName, error);
+        });
+    })();
+    `;
+  },
+
+  generateLegacyMenuUtilsCode(nodeName, customHelpers = {}) {
+    const allHelpers = { ...this.generateMenuUtilsData(nodeName).helpers, ...customHelpers };
+
+    const helpersCode = Object.entries(allHelpers)
+      .map(([name, func]) => `        ${name}: ${func}`)
+      .join(',\n');
+
+    const classCode = this.constructor.toString(); // <-- this gives full class MenuUtils {...}
+
+    return `
+      // Create EVOLV namespace structure
+      window.EVOLV = window.EVOLV || {};
+      window.EVOLV.nodes = window.EVOLV.nodes || {};
+      window.EVOLV.nodes.${nodeName} = window.EVOLV.nodes.${nodeName} || {};
+
+      // Inject MenuUtils class
+      ${classCode}
+
+      // Expose MenuUtils instance to namespace
+      window.EVOLV.nodes.${nodeName}.utils = {
+        menuUtils: new MenuUtils(),
+
+        helpers: {
+${helpersCode}
+        }
+      };
+
+      // Optionally expose globally
+      window.MenuUtils = MenuUtils;
+
+      console.log('${nodeName} utilities loaded in namespace');
+    `;
+  },
+
+  // Backward-compatible alias
+  generateMenuUtilsCode(nodeName, customHelpers = {}) {
+    return this.generateLegacyMenuUtilsCode(nodeName, customHelpers);
+  },
+};
+
+module.exports = htmlGeneration;

src/helper/menu/index.js

@@ -0,0 +1,18 @@
+/**
+ * menu/index.js
+ * Barrel file for the menu module components.
+ */
+
+const toggles = require('./toggles');
+const dataFetching = require('./dataFetching');
+const urlUtils = require('./urlUtils');
+const dropdownPopulation = require('./dropdownPopulation');
+const htmlGeneration = require('./htmlGeneration');
+
+module.exports = {
+  toggles,
+  dataFetching,
+  urlUtils,
+  dropdownPopulation,
+  htmlGeneration,
+};

src/helper/menu/toggles.js

@@ -0,0 +1,56 @@
+/**
+ * Toggle initialization methods for MenuUtils.
+ * Controls visibility of UI elements based on checkbox/dropdown state.
+ */
+
+const toggles = {
+  initBasicToggles(elements) {
+    // Toggle visibility for log level
+    elements.logCheckbox.addEventListener("change", function () {
+      elements.rowLogLevel.style.display = this.checked ? "block" : "none";
+    });
+    elements.rowLogLevel.style.display = elements.logCheckbox.checked
+      ? "block"
+      : "none";
+  },
+
+  // Define the initialize toggles function within scope
+  initMeasurementToggles(elements) {
+    // Toggle visibility for scaling inputs
+    elements.scalingCheckbox.addEventListener("change", function () {
+      elements.rowInputMin.style.display = this.checked ? "block" : "none";
+      elements.rowInputMax.style.display = this.checked ? "block" : "none";
+    });
+
+    // Set initial states
+    elements.rowInputMin.style.display = elements.scalingCheckbox.checked
+      ? "block"
+      : "none";
+    elements.rowInputMax.style.display = elements.scalingCheckbox.checked
+      ? "block"
+      : "none";
+  },
+
+  initTensionToggles(elements, node) {
+    const currentMethod = node.interpolationMethod;
+    elements.rowTension.style.display =
+      currentMethod === "monotone_cubic_spline" ? "block" : "none";
+    console.log(
+      "Initial tension row display: ",
+      elements.rowTension.style.display
+    );
+
+    elements.interpolationMethodInput.addEventListener("change", function () {
+      const selectedMethod = this.value;
+      console.log(`Interpolation method changed: ${selectedMethod}`);
+      node.interpolationMethod = selectedMethod;
+
+      // Toggle visibility for tension input
+      elements.rowTension.style.display =
+        selectedMethod === "monotone_cubic_spline" ? "block" : "none";
+      console.log("Tension row display: ", elements.rowTension.style.display);
+    });
+  },
+};
+
+module.exports = toggles;

src/helper/menu/urlUtils.js

@@ -0,0 +1,39 @@
+/**
+ * URL construction methods for MenuUtils.
+ * Helpers for building API and config URLs.
+ */
+
+const urlUtils = {
+  getSpecificConfigUrl(nodeName, cloudAPI) {
+    const cloudConfigURL = cloudAPI + "/config/" + nodeName + ".json";
+    const localConfigURL = "http://localhost:1880/"+ nodeName + "/dependencies/"+ nodeName + "/" + nodeName + "Config.json";
+
+    return { cloudConfigURL, localConfigURL };
+  },
+
+  // Helper function to construct a URL from a base and path internal
+  constructUrl(base, ...paths) {
+    // Remove trailing slash from base and leading slashes from paths
+    const sanitizedBase = (base || "").replace(/\/+$/, "");
+    const sanitizedPaths = paths.map((path) => path.replace(/^\/+|\/+$/g, ""));
+
+    // Join sanitized base and paths
+    const url = `${sanitizedBase}/${sanitizedPaths.join("/")}`;
+    console.log("Base:", sanitizedBase);
+    console.log("Paths:", sanitizedPaths);
+    console.log("Constructed URL:", url);
+    return url;
+  },
+
+  //Adjust for API Gateway
+  constructCloudURL(base, ...paths) {
+    // Remove trailing slash from base and leading slashes from paths
+    const sanitizedBase = base.replace(/\/+$/, "");
+    const sanitizedPaths = paths.map((path) => path.replace(/^\/+|\/+$/g, ""));
+    // Join sanitized base and paths
+    const url = `${sanitizedBase}/${sanitizedPaths.join("/")}`;
+    return url;
+  },
+};
+
+module.exports = urlUtils;

src/helper/menuUtils.js

@@ -1,543 +1,34 @@
+/**
+ * MenuUtils — UI menu helper for Node-RED editor.
+ * Methods are split across focused modules under ./menu/ and mixed onto the prototype.
+ */
+
+const toggles = require('./menu/toggles');
+const dataFetching = require('./menu/dataFetching');
+const urlUtils = require('./menu/urlUtils');
+const dropdownPopulation = require('./menu/dropdownPopulation');
+const htmlGeneration = require('./menu/htmlGeneration');
+
 class MenuUtils {
-  
+  constructor() {
-
+    this.isCloud = false;
-initBasicToggles(elements) {
+    this.configData = null;
-  // Toggle visibility for log level
-  elements.logCheckbox.addEventListener("change", function () {
-    elements.rowLogLevel.style.display = this.checked ? "block" : "none";
-  });
-  elements.rowLogLevel.style.display = elements.logCheckbox.checked
-    ? "block"
-    : "none";
-}
-
-// Define the initialize toggles function within scope
-initMeasurementToggles(elements) {
-  // Toggle visibility for scaling inputs
-  elements.scalingCheckbox.addEventListener("change", function () {
-    elements.rowInputMin.style.display = this.checked ? "block" : "none";
-    elements.rowInputMax.style.display = this.checked ? "block" : "none";
-  });
-
-  // Set initial states
-  elements.rowInputMin.style.display = elements.scalingCheckbox.checked
-    ? "block"
-    : "none";
-  elements.rowInputMax.style.display = elements.scalingCheckbox.checked
-    ? "block"
-    : "none";
-}
-
-initTensionToggles(elements, node) {
-  const currentMethod = node.interpolationMethod;
-  elements.rowTension.style.display =
-    currentMethod === "monotone_cubic_spline" ? "block" : "none";
-  console.log(
-    "Initial tension row display: ",
-    elements.rowTension.style.display
-  );
-
-  elements.interpolationMethodInput.addEventListener("change", function () {
-    const selectedMethod = this.value;
-    console.log(`Interpolation method changed: ${selectedMethod}`);
-    node.interpolationMethod = selectedMethod;
-
-    // Toggle visibility for tension input
-    elements.rowTension.style.display =
-      selectedMethod === "monotone_cubic_spline" ? "block" : "none";
-    console.log("Tension row display: ", elements.rowTension.style.display);
-  });
-}
-// Define the smoothing methods population function within scope
-populateSmoothingMethods(configUrls, elements, node) {
-  this.fetchData(configUrls.cloud.config, configUrls.local.config)
-    .then((configData) => {
-      const smoothingMethods =
-        configData.smoothing?.smoothMethod?.rules?.values?.map(
-          (o) => o.value
-        ) || [];
-      this.populateDropdown(
-        elements.smoothMethod,
-        smoothingMethods,
-        node,
-        "smooth_method"
-      );
-    })
-    .catch((err) => {
-      console.error("Error loading smoothing methods", err);
-    });
-}
-
-populateInterpolationMethods(configUrls, elements, node) {
-  this.fetchData(configUrls.cloud.config, configUrls.local.config)
-    .then((configData) => {
-      const interpolationMethods =
-        configData?.interpolation?.type?.rules?.values.map((m) => m.value) ||
-        [];
-      this.populateDropdown(
-        elements.interpolationMethodInput,
-        interpolationMethods,
-        node,
-        "interpolationMethod"
-      );
-
-      // Find the selected method and use it to spawn 1 more field to fill in tension
-      //const selectedMethod = interpolationMethods.find(m => m === node.interpolationMethod);
-      this.initTensionToggles(elements, node);
-    })
-    .catch((err) => {
-      console.error("Error loading interpolation methods", err);
-    });
-}
-
-populateLogLevelOptions(logLevelSelect, configData, node) {
-  // debug log level
-  //console.log("Displaying configData => ", configData) ;
-
-  const logLevels =
-    configData?.general?.logging?.logLevel?.rules?.values?.map(
-      (l) => l.value
-    ) || [];
-
-  //console.log("Displaying logLevels => ", logLevels);
-
-  // Reuse your existing generic populateDropdown helper
-  this.populateDropdown(logLevelSelect, logLevels, node.logLevel);
-}
-
-//cascade dropdowns for asset type, supplier, subType, model, unit
-fetchAndPopulateDropdowns(configUrls, elements, node) {
-  this.fetchData(configUrls.cloud.config, configUrls.local.config)
-    .then((configData) => {
-      const assetType = configData.asset?.type?.default;
-      const localSuppliersUrl = this.constructUrl(configUrls.local.taggcodeAPI,`${assetType}s`,"suppliers.json");
-      const cloudSuppliersUrl = this.constructCloudURL(configUrls.cloud.taggcodeAPI, "/vendor/get_vendors.php");
-
-      return this.fetchData(cloudSuppliersUrl, localSuppliersUrl)
-        .then((supplierData) => {
-
-          const suppliers = supplierData.map((supplier) => supplier.name);
-        
-          // Populate suppliers dropdown and set up its change handler
-          return this.populateDropdown(
-            elements.supplier,
-            suppliers,
-            node,
-            "supplier",
-            function (selectedSupplier) {
-              if (selectedSupplier) {
-                this.populateSubTypes(configUrls, elements, node, selectedSupplier);
-              }
-            }
-          );
-        })
-        .then(() => {
-          // If we have a saved supplier, trigger subTypes population
-          if (node.supplier) {
-            this.populateSubTypes(configUrls, elements, node, node.supplier);
-          }
-        });
-    })
-    .catch((error) => {
-      console.error("Error in initial dropdown population:", error);
-    });
-}
-
-getSpecificConfigUrl(nodeName,cloudAPI) {
-    
-      const cloudConfigURL = cloudAPI + "/config/" + nodeName + ".json";
-      const localConfigURL = "http://localhost:1880/"+ nodeName + "/dependencies/"+ nodeName + "/" + nodeName + "Config.json";
-        
-      return { cloudConfigURL, localConfigURL };
-    
-}
-
-// Save changes to API
-async apiCall(node) {
-  try{
-      // OLFIANT when a browser refreshes the tag code is lost!!! fix this later!!!!!
-      // FIX UUID ALSO LATER 
-
-      if(node.assetTagCode !== "" || node.assetTagCode !== null){ }
-      // API call to register or check asset in central database
-        let assetregisterAPI = node.configUrls.cloud.taggcodeAPI + "/asset/create_asset.php";
-
-        const assetModelId = node.modelMetadata.id; //asset_product_model_id
-        const uuid = node.uuid; //asset_product_model_uuid
-        const assetName =  node.assetType; //asset_name / type?
-        const description = node.name; // asset_description
-        const assetStatus = "actief"; //asset_status -> koppel aan enable / disable node ? or make dropdown ?
-        const assetProfileId = 1; //asset_profile_id  these are the rules to check if the childs are valid under this node (parent / child id?)
-        const child_assets = ["63247"]; //child_assets tagnummer of id?
-        const assetProcessId = node.processId; //asset_process_id
-        const assetLocationId = node.locationId; //asset_location_id
-        const tagCode = node.assetTagCode; // if already exists in the node information use it to tell the api it exists and it will update else we will get it from the api call
-        //console.log(`this is my tagCode: ${tagCode}`);
-
-        // Build base URL with required parameters
-        let apiUrl = `?asset_product_model_id=${assetModelId}&asset_product_model_uuid=${uuid}&asset_name=${assetName}&asset_description=${description}&asset_status=${assetStatus}&asset_profile_id=${assetProfileId}&asset_location_id=${assetLocationId}&asset_process_id=${assetProcessId}&child_assets=${child_assets}`;
-        
-        // Only add tagCode to URL if it exists
-        if (tagCode) {
-            apiUrl += `&asset_tag_number=${tagCode}`;
-            console.log('hello there');
-        }
-
-        assetregisterAPI += apiUrl;
-        console.log("API call to register asset in central database", assetregisterAPI);
-
-        const response = await fetch(assetregisterAPI, {
-            method: "POST"
-        });
-
-        // Get the response text first
-        const responseText = await response.text();
-        console.log("Raw API response:", responseText);
-
-        // Try to parse the JSON, handling potential parsing errors
-        let jsonResponse;
-        try {
-            jsonResponse = JSON.parse(responseText);
-        } catch (parseError) {
-            console.error("JSON Parsing Error:", parseError);
-            console.error("Response that could not be parsed:", responseText);
-            throw new Error("Failed to parse API response");
-        }
-
-        console.log(jsonResponse);
-
-        if(jsonResponse.success){
-            console.log(`${jsonResponse.message}, tag number: ${jsonResponse.asset_tag_number}, asset id: ${jsonResponse.asset_id}`);
-            // Save the asset tag number and id to the node
-        } else {
-            console.log("Asset not registered in central database");
-        }
-        return jsonResponse;
-
-    } catch (error) {
-        console.log("Error saving changes to asset register API", error);
-    }
-}
-
-
-async fetchData(url, fallbackUrl) {
-  try {
-    const response = await fetch(url);
-    if (!response.ok) throw new Error(`HTTP error! status: ${response.status}`);
-    const responsData =  await response.json();
-    //responsData
-    const data = responsData.data;
-    /* .map(item => {
-      const { vendor_name, ...rest } = item;
-      return {
-      name: vendor_name,
-      ...rest
-      };
-    }); */
-    console.log(url);
-    console.log("Response Data: ", data);
-    return data;
-
-  } catch (err) {
-    console.warn(
-      `Primary URL failed: ${url}. Trying fallback URL: ${fallbackUrl}`,
-      err
-    );
-    try {
-      const response = await fetch(fallbackUrl);
-      if (!response.ok)
-        throw new Error(`HTTP error! status: ${response.status}`);
-      return await response.json();
-    } catch (fallbackErr) {
-      console.error("Both primary and fallback URLs failed:", fallbackErr);
-      return [];
-    }
   }
 }
 
-async fetchProjectData(url) {
+// Mix all method groups onto the prototype
-  try {
+const mixins = [toggles, dataFetching, urlUtils, dropdownPopulation, htmlGeneration];
-    const response = await fetch(url);
+for (const mixin of mixins) {
-    if (!response.ok) throw new Error(`HTTP error! status: ${response.status}`);
+  for (const [name, fn] of Object.entries(mixin)) {
-    const responsData =  await response.json();
+    if (typeof fn === 'function') {
-    console.log("Response Data: ", responsData);
+      Object.defineProperty(MenuUtils.prototype, name, {
-    return responsData;
+        value: fn,
-
+        writable: true,
-  } catch (err) {
+        configurable: true,
-  }
+        enumerable: false,
-}
-
-async populateDropdown(
-  htmlElement,
-  options,
-  node,
-  property,
-  callback
-) {
-  this.generateHtml(htmlElement, options, node[property]);
-
-  htmlElement.addEventListener("change", async (e) => {
-    const newValue = e.target.value;
-    console.log(`Dropdown changed: ${property} = ${newValue}`);
-    node[property] = newValue;
-
-    RED.nodes.dirty(true);
-    if (callback) await callback(newValue); // Ensure async callback completion
-  });
-}
-
-// Helper function to construct a URL from a base and path internal
-constructUrl(base, ...paths) {
-
-  // Remove trailing slash from base and leading slashes from paths
-  const sanitizedBase = (base || "").replace(/\/+$/, "");
-  const sanitizedPaths = paths.map((path) => path.replace(/^\/+|\/+$/g, ""));
-
-  // Join sanitized base and paths
-  const url = `${sanitizedBase}/${sanitizedPaths.join("/")}`;
-  console.log("Base:", sanitizedBase);
-  console.log("Paths:", sanitizedPaths);
-  console.log("Constructed URL:", url);
-  return url;
-}
-
-//Adjust for API Gateway
-constructCloudURL(base, ...paths) {
-  // Remove trailing slash from base and leading slashes from paths
-  const sanitizedBase = base.replace(/\/+$/, "");
-  const sanitizedPaths = paths.map((path) => path.replace(/^\/+|\/+$/g, ""));
-  // Join sanitized base and paths
-  const url = `${sanitizedBase}/${sanitizedPaths.join("/")}`;
-  return url;
-}
-
-populateSubTypes(configUrls, elements, node, selectedSupplier) {
-
-  this.fetchData(configUrls.cloud.config, configUrls.local.config)
-    .then((configData) => {
-      const assetType = configData.asset?.type?.default;
-      const supplierFolder = this.constructUrl( configUrls.local.taggcodeAPI, `${assetType}s`, selectedSupplier );
-
-      const localSubTypesUrl = this.constructUrl(supplierFolder, "subtypes.json");
-      const cloudSubTypesUrl = this.constructCloudURL(configUrls.cloud.taggcodeAPI, "/product/get_subtypesFromVendor.php?vendor_name=" + selectedSupplier);
-
-      return this.fetchData(cloudSubTypesUrl, localSubTypesUrl)
-        .then((subTypeData) => {
-          const subTypes = subTypeData.map((subType) => subType.name);
-
-          return this.populateDropdown(
-            elements.subType,
-            subTypes,
-            node,
-            "subType",
-            function (selectedSubType) {
-              if (selectedSubType) {
-                // When subType changes, update both models and units
-                this.populateModels(
-                  configUrls,
-                  elements,
-                  node,
-                  selectedSupplier,
-                  selectedSubType
-                );
-                this.populateUnitsForSubType(
-                  configUrls,
-                  elements,
-                  node,
-                  selectedSubType
-                );
-              }
-            }
-          );
-        })
-        .then(() => {
-          // If we have a saved subType, trigger both models and units population
-          if (node.subType) {
-            this.populateModels(
-              configUrls,
-              elements,
-              node,
-              selectedSupplier,
-              node.subType
-            );
-            this.populateUnitsForSubType(configUrls, elements, node, node.subType);
-          }
-          //console.log("In fetch part of subtypes ");
-          // Store all data from selected model
-/*           node["modelMetadata"] = modelData.find(
-            (model) => model.name === node.model
-          );
-          console.log("Model Metadata: ", node["modelMetadata"]); */
-        });
-    })
-    .catch((error) => {
-      console.error("Error populating subtypes:", error);
-    });
-}
-
-populateUnitsForSubType(configUrls, elements, node, selectedSubType) {
-  // Fetch the units data
-  this.fetchData(configUrls.cloud.units, configUrls.local.units)
-    .then((unitsData) => {
-      // Find the category that matches the subType name
-      const categoryData = unitsData.units.find(
-        (category) =>
-          category.category.toLowerCase() === selectedSubType.toLowerCase()
-      );
-
-      if (categoryData) {
-        // Extract just the unit values and descriptions
-        const units = categoryData.values.map((unit) => ({
-          value: unit.value,
-          description: unit.description,
-        }));
-
-        // Create the options array with descriptions as labels
-        const options = units.map((unit) => ({
-          value: unit.value,
-          label: `${unit.value} - ${unit.description}`,
-        }));
-
-        // Populate the units dropdown
-        this.populateDropdown(
-          elements.unit,
-          options.map((opt) => opt.value),
-          node,
-          "unit"
-        );
-
-        // If there's no currently selected unit but we have options, select the first one
-        if (!node.unit && options.length > 0) {
-          node.unit = options[0].value;
-          elements.unit.value = options[0].value;
-        }
-      } else {
-        // If no matching category is found, provide a default % option
-        const defaultUnits = [{ value: "%", description: "Percentage" }];
-        this.populateDropdown(
-          elements.unit,
-          defaultUnits.map((unit) => unit.value),
-          node,
-          "unit"
-        );
-        console.warn(
-          `No matching unit category found for subType: ${selectedSubType}`
-        );
-      }
-    })
-    .catch((error) => {
-      console.error("Error fetching units:", error);
-    });
-}
-
-populateModels(
-  configUrls,
-  elements,
-  node,
-  selectedSupplier,
-  selectedSubType
-) {
-
-  this.fetchData(configUrls.cloud.config, configUrls.local.config)
-    .then((configData) => {
-      const assetType = configData.asset?.type?.default;
-      // save assetType to fetch later 
-      node.assetType = assetType;
-
-      const supplierFolder = this.constructUrl( configUrls.local.taggcodeAPI,`${assetType}s`,selectedSupplier);
-      const subTypeFolder = this.constructUrl(supplierFolder, selectedSubType);
-      const localModelsUrl = this.constructUrl(subTypeFolder, "models.json");
-      const cloudModelsUrl  = this.constructCloudURL(configUrls.cloud.taggcodeAPI, "/product/get_product_models.php?vendor_name=" + selectedSupplier + "&product_subtype_name=" + selectedSubType);
-
-      return this.fetchData(cloudModelsUrl, localModelsUrl).then((modelData) => {
-        const models = modelData.map((model) => model.name); // use this to populate the dropdown
-
-        // If a model is already selected, store its metadata immediately
-        if (node.model) {
-          node["modelMetadata"] = modelData.find((model) => model.name === node.model);
-        }
-
-        this.populateDropdown(elements.model, models, node, "model", (selectedModel) => {
-          // Store only the metadata for the selected model
-          node["modelMetadata"] = modelData.find((model) => model.name === selectedModel);
-        });
-        /*
-        console.log('hello here I am:');
-        console.log(node["modelMetadata"]);
-*/
       });
-
+    }
-    })
-    .catch((error) => {
-      console.error("Error populating models:", error);
-    });
-}
-
-generateHtml(htmlElement, options, savedValue) {
-  htmlElement.innerHTML = options.length
-    ? `<option value="">Select...</option>${options
-        .map((opt) => `<option value="${opt}">${opt}</option>`)
-        .join("")}`
-    : "<option value=''>No options available</option>";
-
-  if (savedValue && options.includes(savedValue)) {
-    htmlElement.value = savedValue;
   }
 }
 
-createMenuUtilsEndpoint(RED, nodeName, customHelpers = {}) {
+module.exports = MenuUtils;
-    RED.httpAdmin.get(`/${nodeName}/resources/menuUtils.js`, function(req, res) {
-      console.log(`Serving menuUtils.js for ${nodeName} node`);
-      res.set('Content-Type', 'application/javascript');
-      
-      const browserCode = this.generateMenuUtilsCode(nodeName, customHelpers);
-      res.send(browserCode);
-    }.bind(this));
-  }
-
-generateMenuUtilsCode(nodeName, customHelpers = {}) {
-  const defaultHelpers = {
-    validateRequired: `function(value) {
-      return value && value.toString().trim() !== '';
-    }`,
-    formatDisplayValue: `function(value, unit) {
-      return \`\${value} \${unit || ''}\`.trim();
-    }`
-  };
-
-  const allHelpers = { ...defaultHelpers, ...customHelpers };
-
-  const helpersCode = Object.entries(allHelpers)
-    .map(([name, func]) => `        ${name}: ${func}`)
-    .join(',\n');
-
-  const classCode = MenuUtils.toString(); // <-- this gives full class MenuUtils {...}
-
-  return `
-    // Create EVOLV namespace structure
-    window.EVOLV = window.EVOLV || {};
-    window.EVOLV.nodes = window.EVOLV.nodes || {};
-    window.EVOLV.nodes.${nodeName} = window.EVOLV.nodes.${nodeName} || {};
-
-    // Inject MenuUtils class
-    ${classCode}
-
-    // Expose MenuUtils instance to namespace
-    window.EVOLV.nodes.${nodeName}.utils = {
-      menuUtils: new MenuUtils(),
-
-      helpers: {
-${helpersCode}
-      }
-    };
-
-    // Optionally expose globally
-    window.MenuUtils = MenuUtils;
-
-    console.log('${nodeName} utilities loaded in namespace');
-  `;
-}
-
-}
-
-module.exports = MenuUtils;

src/helper/menuUtils_DEPRECATED.js

@@ -1,543 +0,0 @@
-class MenuUtils {
-  
-
-initBasicToggles(elements) {
-  // Toggle visibility for log level
-  elements.logCheckbox.addEventListener("change", function () {
-    elements.rowLogLevel.style.display = this.checked ? "block" : "none";
-  });
-  elements.rowLogLevel.style.display = elements.logCheckbox.checked
-    ? "block"
-    : "none";
-}
-
-// Define the initialize toggles function within scope
-initMeasurementToggles(elements) {
-  // Toggle visibility for scaling inputs
-  elements.scalingCheckbox.addEventListener("change", function () {
-    elements.rowInputMin.style.display = this.checked ? "block" : "none";
-    elements.rowInputMax.style.display = this.checked ? "block" : "none";
-  });
-
-  // Set initial states
-  elements.rowInputMin.style.display = elements.scalingCheckbox.checked
-    ? "block"
-    : "none";
-  elements.rowInputMax.style.display = elements.scalingCheckbox.checked
-    ? "block"
-    : "none";
-}
-
-initTensionToggles(elements, node) {
-  const currentMethod = node.interpolationMethod;
-  elements.rowTension.style.display =
-    currentMethod === "monotone_cubic_spline" ? "block" : "none";
-  console.log(
-    "Initial tension row display: ",
-    elements.rowTension.style.display
-  );
-
-  elements.interpolationMethodInput.addEventListener("change", function () {
-    const selectedMethod = this.value;
-    console.log(`Interpolation method changed: ${selectedMethod}`);
-    node.interpolationMethod = selectedMethod;
-
-    // Toggle visibility for tension input
-    elements.rowTension.style.display =
-      selectedMethod === "monotone_cubic_spline" ? "block" : "none";
-    console.log("Tension row display: ", elements.rowTension.style.display);
-  });
-}
-// Define the smoothing methods population function within scope
-populateSmoothingMethods(configUrls, elements, node) {
-  this.fetchData(configUrls.cloud.config, configUrls.local.config)
-    .then((configData) => {
-      const smoothingMethods =
-        configData.smoothing?.smoothMethod?.rules?.values?.map(
-          (o) => o.value
-        ) || [];
-      this.populateDropdown(
-        elements.smoothMethod,
-        smoothingMethods,
-        node,
-        "smooth_method"
-      );
-    })
-    .catch((err) => {
-      console.error("Error loading smoothing methods", err);
-    });
-}
-
-populateInterpolationMethods(configUrls, elements, node) {
-  this.fetchData(configUrls.cloud.config, configUrls.local.config)
-    .then((configData) => {
-      const interpolationMethods =
-        configData?.interpolation?.type?.rules?.values.map((m) => m.value) ||
-        [];
-      this.populateDropdown(
-        elements.interpolationMethodInput,
-        interpolationMethods,
-        node,
-        "interpolationMethod"
-      );
-
-      // Find the selected method and use it to spawn 1 more field to fill in tension
-      //const selectedMethod = interpolationMethods.find(m => m === node.interpolationMethod);
-      this.initTensionToggles(elements, node);
-    })
-    .catch((err) => {
-      console.error("Error loading interpolation methods", err);
-    });
-}
-
-populateLogLevelOptions(logLevelSelect, configData, node) {
-  // debug log level
-  //console.log("Displaying configData => ", configData) ;
-
-  const logLevels =
-    configData?.general?.logging?.logLevel?.rules?.values?.map(
-      (l) => l.value
-    ) || [];
-
-  //console.log("Displaying logLevels => ", logLevels);
-
-  // Reuse your existing generic populateDropdown helper
-  this.populateDropdown(logLevelSelect, logLevels, node.logLevel);
-}
-
-//cascade dropdowns for asset type, supplier, subType, model, unit
-fetchAndPopulateDropdowns(configUrls, elements, node) {
-  this.fetchData(configUrls.cloud.config, configUrls.local.config)
-    .then((configData) => {
-      const assetType = configData.asset?.type?.default;
-      const localSuppliersUrl = this.constructUrl(configUrls.local.taggcodeAPI,`${assetType}s`,"suppliers.json");
-      const cloudSuppliersUrl = this.constructCloudURL(configUrls.cloud.taggcodeAPI, "/vendor/get_vendors.php");
-
-      return this.fetchData(cloudSuppliersUrl, localSuppliersUrl)
-        .then((supplierData) => {
-
-          const suppliers = supplierData.map((supplier) => supplier.name);
-        
-          // Populate suppliers dropdown and set up its change handler
-          return this.populateDropdown(
-            elements.supplier,
-            suppliers,
-            node,
-            "supplier",
-            function (selectedSupplier) {
-              if (selectedSupplier) {
-                this.populateSubTypes(configUrls, elements, node, selectedSupplier);
-              }
-            }
-          );
-        })
-        .then(() => {
-          // If we have a saved supplier, trigger subTypes population
-          if (node.supplier) {
-            this.populateSubTypes(configUrls, elements, node, node.supplier);
-          }
-        });
-    })
-    .catch((error) => {
-      console.error("Error in initial dropdown population:", error);
-    });
-}
-
-getSpecificConfigUrl(nodeName,cloudAPI) {
-    
-      const cloudConfigURL = cloudAPI + "/config/" + nodeName + ".json";
-      const localConfigURL = "http://localhost:1880/"+ nodeName + "/dependencies/"+ nodeName + "/" + nodeName + "Config.json";
-        
-      return { cloudConfigURL, localConfigURL };
-    
-}
-
-// Save changes to API
-async apiCall(node) {
-  try{
-      // OLFIANT when a browser refreshes the tag code is lost!!! fix this later!!!!!
-      // FIX UUID ALSO LATER 
-
-      if(node.assetTagCode !== "" || node.assetTagCode !== null){ }
-      // API call to register or check asset in central database
-        let assetregisterAPI = node.configUrls.cloud.taggcodeAPI + "/asset/create_asset.php";
-
-        const assetModelId = node.modelMetadata.id; //asset_product_model_id
-        const uuid = node.uuid; //asset_product_model_uuid
-        const assetName =  node.assetType; //asset_name / type?
-        const description = node.name; // asset_description
-        const assetStatus = "actief"; //asset_status -> koppel aan enable / disable node ? or make dropdown ?
-        const assetProfileId = 1; //asset_profile_id  these are the rules to check if the childs are valid under this node (parent / child id?)
-        const child_assets = ["63247"]; //child_assets tagnummer of id?
-        const assetProcessId = node.processId; //asset_process_id
-        const assetLocationId = node.locationId; //asset_location_id
-        const tagCode = node.assetTagCode; // if already exists in the node information use it to tell the api it exists and it will update else we will get it from the api call
-        //console.log(`this is my tagCode: ${tagCode}`);
-
-        // Build base URL with required parameters
-        let apiUrl = `?asset_product_model_id=${assetModelId}&asset_product_model_uuid=${uuid}&asset_name=${assetName}&asset_description=${description}&asset_status=${assetStatus}&asset_profile_id=${assetProfileId}&asset_location_id=${assetLocationId}&asset_process_id=${assetProcessId}&child_assets=${child_assets}`;
-        
-        // Only add tagCode to URL if it exists
-        if (tagCode) {
-            apiUrl += `&asset_tag_number=${tagCode}`;
-            console.log('hello there');
-        }
-
-        assetregisterAPI += apiUrl;
-        console.log("API call to register asset in central database", assetregisterAPI);
-
-        const response = await fetch(assetregisterAPI, {
-            method: "POST"
-        });
-
-        // Get the response text first
-        const responseText = await response.text();
-        console.log("Raw API response:", responseText);
-
-        // Try to parse the JSON, handling potential parsing errors
-        let jsonResponse;
-        try {
-            jsonResponse = JSON.parse(responseText);
-        } catch (parseError) {
-            console.error("JSON Parsing Error:", parseError);
-            console.error("Response that could not be parsed:", responseText);
-            throw new Error("Failed to parse API response");
-        }
-
-        console.log(jsonResponse);
-
-        if(jsonResponse.success){
-            console.log(`${jsonResponse.message}, tag number: ${jsonResponse.asset_tag_number}, asset id: ${jsonResponse.asset_id}`);
-            // Save the asset tag number and id to the node
-        } else {
-            console.log("Asset not registered in central database");
-        }
-        return jsonResponse;
-
-    } catch (error) {
-        console.log("Error saving changes to asset register API", error);
-    }
-}
-
-
-async fetchData(url, fallbackUrl) {
-  try {
-    const response = await fetch(url);
-    if (!response.ok) throw new Error(`HTTP error! status: ${response.status}`);
-    const responsData =  await response.json();
-    //responsData
-    const data = responsData.data;
-    /* .map(item => {
-      const { vendor_name, ...rest } = item;
-      return {
-      name: vendor_name,
-      ...rest
-      };
-    }); */
-    console.log(url);
-    console.log("Response Data: ", data);
-    return data;
-
-  } catch (err) {
-    console.warn(
-      `Primary URL failed: ${url}. Trying fallback URL: ${fallbackUrl}`,
-      err
-    );
-    try {
-      const response = await fetch(fallbackUrl);
-      if (!response.ok)
-        throw new Error(`HTTP error! status: ${response.status}`);
-      return await response.json();
-    } catch (fallbackErr) {
-      console.error("Both primary and fallback URLs failed:", fallbackErr);
-      return [];
-    }
-  }
-}
-
-async fetchProjectData(url) {
-  try {
-    const response = await fetch(url);
-    if (!response.ok) throw new Error(`HTTP error! status: ${response.status}`);
-    const responsData =  await response.json();
-    console.log("Response Data: ", responsData);
-    return responsData;
-
-  } catch (err) {
-  }
-}
-
-async populateDropdown(
-  htmlElement,
-  options,
-  node,
-  property,
-  callback
-) {
-  this.generateHtml(htmlElement, options, node[property]);
-
-  htmlElement.addEventListener("change", async (e) => {
-    const newValue = e.target.value;
-    console.log(`Dropdown changed: ${property} = ${newValue}`);
-    node[property] = newValue;
-
-    RED.nodes.dirty(true);
-    if (callback) await callback(newValue); // Ensure async callback completion
-  });
-}
-
-// Helper function to construct a URL from a base and path internal
-constructUrl(base, ...paths) {
-
-  // Remove trailing slash from base and leading slashes from paths
-  const sanitizedBase = (base || "").replace(/\/+$/, "");
-  const sanitizedPaths = paths.map((path) => path.replace(/^\/+|\/+$/g, ""));
-
-  // Join sanitized base and paths
-  const url = `${sanitizedBase}/${sanitizedPaths.join("/")}`;
-  console.log("Base:", sanitizedBase);
-  console.log("Paths:", sanitizedPaths);
-  console.log("Constructed URL:", url);
-  return url;
-}
-
-//Adjust for API Gateway
-constructCloudURL(base, ...paths) {
-  // Remove trailing slash from base and leading slashes from paths
-  const sanitizedBase = base.replace(/\/+$/, "");
-  const sanitizedPaths = paths.map((path) => path.replace(/^\/+|\/+$/g, ""));
-  // Join sanitized base and paths
-  const url = `${sanitizedBase}/${sanitizedPaths.join("/")}`;
-  return url;
-}
-
-populateSubTypes(configUrls, elements, node, selectedSupplier) {
-
-  this.fetchData(configUrls.cloud.config, configUrls.local.config)
-    .then((configData) => {
-      const assetType = configData.asset?.type?.default;
-      const supplierFolder = this.constructUrl( configUrls.local.taggcodeAPI, `${assetType}s`, selectedSupplier );
-
-      const localSubTypesUrl = this.constructUrl(supplierFolder, "subtypes.json");
-      const cloudSubTypesUrl = this.constructCloudURL(configUrls.cloud.taggcodeAPI, "/product/get_subtypesFromVendor.php?vendor_name=" + selectedSupplier);
-
-      return this.fetchData(cloudSubTypesUrl, localSubTypesUrl)
-        .then((subTypeData) => {
-          const subTypes = subTypeData.map((subType) => subType.name);
-
-          return this.populateDropdown(
-            elements.subType,
-            subTypes,
-            node,
-            "subType",
-            function (selectedSubType) {
-              if (selectedSubType) {
-                // When subType changes, update both models and units
-                this.populateModels(
-                  configUrls,
-                  elements,
-                  node,
-                  selectedSupplier,
-                  selectedSubType
-                );
-                this.populateUnitsForSubType(
-                  configUrls,
-                  elements,
-                  node,
-                  selectedSubType
-                );
-              }
-            }
-          );
-        })
-        .then(() => {
-          // If we have a saved subType, trigger both models and units population
-          if (node.subType) {
-            this.populateModels(
-              configUrls,
-              elements,
-              node,
-              selectedSupplier,
-              node.subType
-            );
-            this.populateUnitsForSubType(configUrls, elements, node, node.subType);
-          }
-          //console.log("In fetch part of subtypes ");
-          // Store all data from selected model
-/*           node["modelMetadata"] = modelData.find(
-            (model) => model.name === node.model
-          );
-          console.log("Model Metadata: ", node["modelMetadata"]); */
-        });
-    })
-    .catch((error) => {
-      console.error("Error populating subtypes:", error);
-    });
-}
-
-populateUnitsForSubType(configUrls, elements, node, selectedSubType) {
-  // Fetch the units data
-  this.fetchData(configUrls.cloud.units, configUrls.local.units)
-    .then((unitsData) => {
-      // Find the category that matches the subType name
-      const categoryData = unitsData.units.find(
-        (category) =>
-          category.category.toLowerCase() === selectedSubType.toLowerCase()
-      );
-
-      if (categoryData) {
-        // Extract just the unit values and descriptions
-        const units = categoryData.values.map((unit) => ({
-          value: unit.value,
-          description: unit.description,
-        }));
-
-        // Create the options array with descriptions as labels
-        const options = units.map((unit) => ({
-          value: unit.value,
-          label: `${unit.value} - ${unit.description}`,
-        }));
-
-        // Populate the units dropdown
-        this.populateDropdown(
-          elements.unit,
-          options.map((opt) => opt.value),
-          node,
-          "unit"
-        );
-
-        // If there's no currently selected unit but we have options, select the first one
-        if (!node.unit && options.length > 0) {
-          node.unit = options[0].value;
-          elements.unit.value = options[0].value;
-        }
-      } else {
-        // If no matching category is found, provide a default % option
-        const defaultUnits = [{ value: "%", description: "Percentage" }];
-        this.populateDropdown(
-          elements.unit,
-          defaultUnits.map((unit) => unit.value),
-          node,
-          "unit"
-        );
-        console.warn(
-          `No matching unit category found for subType: ${selectedSubType}`
-        );
-      }
-    })
-    .catch((error) => {
-      console.error("Error fetching units:", error);
-    });
-}
-
-populateModels(
-  configUrls,
-  elements,
-  node,
-  selectedSupplier,
-  selectedSubType
-) {
-
-  this.fetchData(configUrls.cloud.config, configUrls.local.config)
-    .then((configData) => {
-      const assetType = configData.asset?.type?.default;
-      // save assetType to fetch later 
-      node.assetType = assetType;
-
-      const supplierFolder = this.constructUrl( configUrls.local.taggcodeAPI,`${assetType}s`,selectedSupplier);
-      const subTypeFolder = this.constructUrl(supplierFolder, selectedSubType);
-      const localModelsUrl = this.constructUrl(subTypeFolder, "models.json");
-      const cloudModelsUrl  = this.constructCloudURL(configUrls.cloud.taggcodeAPI, "/product/get_product_models.php?vendor_name=" + selectedSupplier + "&product_subtype_name=" + selectedSubType);
-
-      return this.fetchData(cloudModelsUrl, localModelsUrl).then((modelData) => {
-        const models = modelData.map((model) => model.name); // use this to populate the dropdown
-
-        // If a model is already selected, store its metadata immediately
-        if (node.model) {
-          node["modelMetadata"] = modelData.find((model) => model.name === node.model);
-        }
-
-        this.populateDropdown(elements.model, models, node, "model", (selectedModel) => {
-          // Store only the metadata for the selected model
-          node["modelMetadata"] = modelData.find((model) => model.name === selectedModel);
-        });
-        /*
-        console.log('hello here I am:');
-        console.log(node["modelMetadata"]);
-*/
-      });
-
-    })
-    .catch((error) => {
-      console.error("Error populating models:", error);
-    });
-}
-
-generateHtml(htmlElement, options, savedValue) {
-  htmlElement.innerHTML = options.length
-    ? `<option value="">Select...</option>${options
-        .map((opt) => `<option value="${opt}">${opt}</option>`)
-        .join("")}`
-    : "<option value=''>No options available</option>";
-
-  if (savedValue && options.includes(savedValue)) {
-    htmlElement.value = savedValue;
-  }
-}
-
-createMenuUtilsEndpoint(RED, nodeName, customHelpers = {}) {
-    RED.httpAdmin.get(`/${nodeName}/resources/menuUtils.js`, function(req, res) {
-      console.log(`Serving menuUtils.js for ${nodeName} node`);
-      res.set('Content-Type', 'application/javascript');
-      
-      const browserCode = this.generateMenuUtilsCode(nodeName, customHelpers);
-      res.send(browserCode);
-    }.bind(this));
-  }
-
-generateMenuUtilsCode(nodeName, customHelpers = {}) {
-  const defaultHelpers = {
-    validateRequired: `function(value) {
-      return value && value.toString().trim() !== '';
-    }`,
-    formatDisplayValue: `function(value, unit) {
-      return \`\${value} \${unit || ''}\`.trim();
-    }`
-  };
-
-  const allHelpers = { ...defaultHelpers, ...customHelpers };
-
-  const helpersCode = Object.entries(allHelpers)
-    .map(([name, func]) => `        ${name}: ${func}`)
-    .join(',\n');
-
-  const classCode = MenuUtils.toString(); // <-- this gives full class MenuUtils {...}
-
-  return `
-    // Create EVOLV namespace structure
-    window.EVOLV = window.EVOLV || {};
-    window.EVOLV.nodes = window.EVOLV.nodes || {};
-    window.EVOLV.nodes.${nodeName} = window.EVOLV.nodes.${nodeName} || {};
-
-    // Inject MenuUtils class
-    ${classCode}
-
-    // Expose MenuUtils instance to namespace
-    window.EVOLV.nodes.${nodeName}.utils = {
-      menuUtils: new MenuUtils(),
-
-      helpers: {
-${helpersCode}
-      }
-    };
-
-    // Optionally expose globally
-    window.MenuUtils = MenuUtils;
-
-    console.log('${nodeName} utilities loaded in namespace');
-  `;
-}
-
-}
-
-module.exports = MenuUtils;

src/helper/nodeTemplates.js

@@ -53,4 +53,4 @@ const nodeTemplates = {
   // …add more node “templates” here…
 };
 
-export default nodeTemplates;
+module.exports = nodeTemplates;

src/helper/outputUtils.js

@@ -1,15 +1,19 @@
+const { getFormatter } = require('./formatters');
+
 //this class will handle the output events for the node red node
 class OutputUtils {
   constructor() {
-    this.output ={};
+    this.output = {};
-    this.output['influxdb'] = {};
-    this.output['process'] = {};
   }
 
   checkForChanges(output, format) {
+    if (!output || typeof output !== 'object') {
+      return {};
+    }
+    this.output[format] = this.output[format] || {};
     const changedFields = {};
     for (const key in output) {
-      if (output.hasOwnProperty(key) && output[key] !== this.output[format][key]) {
+      if (Object.prototype.hasOwnProperty.call(output, key) && output[key] !== this.output[format][key]) {
         let value = output[key];
         // For fields: if the value is an object (and not a Date), stringify it.
         if (value !== null && typeof value === 'object' && !(value instanceof Date)) {
@@ -27,66 +31,56 @@ class OutputUtils {
   }
 
   formatMsg(output, config, format) {
-  
-    //define emtpy message
       let msg = {};
 
       // Compare output with last output and only include changed values
       const changedFields = this.checkForChanges(output,format);
 
       if (Object.keys(changedFields).length > 0) {
-
+        const measurement = config.general.name;
-        switch (format) {
+        const flatTags = this.flattenTags(this.extractRelevantConfig(config));
-          case 'influxdb':  
+        const formatterName = this.resolveFormatterName(config, format);
-            // Extract the relevant config properties.
+        const formatter = getFormatter(formatterName);
-            const relevantConfig = this.extractRelevantConfig(config);
+        const payload = formatter.format(measurement, {
-            // Flatten the tags so that no nested objects are passed on.
+          fields: changedFields,
-            const flatTags = this.flattenTags(relevantConfig);
+          tags: flatTags,
-            msg = this.influxDBFormat(changedFields, config, flatTags);
+          config,
-            
+          channel: format,
-            break;
+        });
-
+        msg = this.wrapMessage(measurement, payload);
-          case 'process':
-
-            // Compare output with last output and only include changed values
-            msg = this.processFormat(changedFields,config);
-            //console.log(msg);
-            break;
-
-          default:
-            console.log('Unknown format in output utils');
-            break;
-        }
         return msg;
       }
+      return null;
   }
-  
 
-  influxDBFormat(changedFields, config , flatTags) {
+  resolveFormatterName(config, channel) {
-    // Create the measurement and topic using softwareType and name config.functionality.softwareType + .
+    const outputConfig = config.output || {};
-    const measurement = config.general.name;
+    if (channel === 'process') {
-    const payload = {
+      return outputConfig.process || 'process';
-      measurement: measurement,
+    }
-      fields: changedFields,
+    if (channel === 'influxdb') {
-      tags: flatTags,
+      return outputConfig.dbase || 'influxdb';
-      timestamp: new Date(),
+    }
+    return outputConfig[channel] || channel;
+  }
+
+  wrapMessage(measurement, payload) {
+    return {
+      topic: measurement,
+      payload,
     };
-
-    const topic = measurement;
-    const msg = { topic: topic, payload: payload };
-    return msg;
   }
 
   flattenTags(obj) {
     const result = {};
     for (const key in obj) {
-      if (obj.hasOwnProperty(key)) {
+      if (Object.prototype.hasOwnProperty.call(obj, key)) {
         const value = obj[key];
         if (value !== null && typeof value === 'object' && !(value instanceof Date)) {
           // Recursively flatten the nested object.
           const flatChild = this.flattenTags(value);
           for (const childKey in flatChild) {
-            if (flatChild.hasOwnProperty(childKey)) {
+            if (Object.prototype.hasOwnProperty.call(flatChild, childKey)) {
               result[`${key}_${childKey}`] = String(flatChild[childKey]);
             }
           }
@@ -100,33 +94,23 @@ class OutputUtils {
   }
 
   extractRelevantConfig(config) {
-    
+
     return {
       // general properties
       id: config.general?.id,
-      name: config.general?.name,
-      unit: config.general?.unit,
       // functionality properties
       softwareType: config.functionality?.softwareType,
       role: config.functionality?.role,
       // asset properties (exclude machineCurve)
       uuid: config.asset?.uuid,
+      tagcode: config.asset?.tagcode,
       geoLocation: config.asset?.geoLocation,
-      supplier: config.asset?.supplier,
+      category: config.asset?.category,
       type: config.asset?.type,
-      subType: config.asset?.subType,
       model: config.asset?.model,
+      unit: config.general?.unit,
     };
   }
-
-  processFormat(changedFields,config) {
-        // Create the measurement and topic using softwareType and name config.functionality.softwareType + .
-        const measurement = config.general.name;
-        const payload = changedFields;
-        const topic = measurement;
-        const msg = { topic: topic, payload: payload };
-        return msg;
-  }
 }
 
 module.exports = OutputUtils;

src/helper/validationUtils.js

@@ -1,46 +1,73 @@
 /**
  * @file validation.js
  *
- * Permission is hereby granted to any person obtaining a copy of this software 
+ * Permission is hereby granted to any person obtaining a copy of this software
- * and associated documentation files (the "Software"), to use it for personal 
+ * and associated documentation files (the "Software"), to use it for personal
  * or non-commercial purposes, with the following restrictions:
  *
- * 1. **No Copying or Redistribution**: The Software or any of its parts may not 
+ * 1. **No Copying or Redistribution**: The Software or any of its parts may not
- *    be copied, merged, distributed, sublicensed, or sold without explicit 
+ *    be copied, merged, distributed, sublicensed, or sold without explicit
  *    prior written permission from the author.
- * 
+ *
- * 2. **Commercial Use**: Any use of the Software for commercial purposes requires 
+ * 2. **Commercial Use**: Any use of the Software for commercial purposes requires
  *    a valid license, obtainable only with the explicit consent of the author.
- * 
+ *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
+ * FITNESS FOR A PARTICULAR PURPOSE, AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER 
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE, ARISING FROM, 
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE, ARISING FROM,
- * OUT OF, OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 
+ * OUT OF, OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  *
- * Ownership of this code remains solely with the original author. Unauthorized 
+ * Ownership of this code remains solely with the original author. Unauthorized
  * use of this Software is strictly prohibited.
- 
+
     * @summary Validation utility for validating and constraining configuration values.
     * @description Validation utility for validating and constraining configuration values.
     * @module ValidationUtils
     * @requires Logger
     * @exports ValidationUtils
-    * @version 0.1.0
+    * @version 0.2.0
     * @since 0.1.0
 */
 
 const Logger = require("./logger");
+const { validateNumber, validateInteger, validateBoolean, validateString, validateEnum } = require("./validators/typeValidators");
+const { validateArray, validateSet, validateObject } = require("./validators/collectionValidators");
+const { validateCurve, validateMachineCurve } = require("./validators/curveValidator");
+
+// Strategy registry: maps rules.type to a handler function
+const VALIDATORS = {
+    number:       (cv, rules, fs, name, key, logger)       => validateNumber(cv, rules, fs, name, key, logger),
+    integer:      (cv, rules, fs, name, key, logger)       => validateInteger(cv, rules, fs, name, key, logger),
+    boolean:      (cv, _rules, _fs, name, key, logger)     => validateBoolean(cv, name, key, logger),
+    string:       (cv, rules, fs, name, key, logger)       => validateString(cv, rules, fs, name, key, logger),
+    enum:         (cv, rules, fs, name, key, logger)       => validateEnum(cv, rules, fs, name, key, logger),
+    array:        (cv, rules, fs, name, key, logger)       => validateArray(cv, rules, fs, name, key, logger),
+    set:          (cv, rules, fs, name, key, logger)       => validateSet(cv, rules, fs, name, key, logger),
+};
 
 class ValidationUtils {
   constructor(IloggerEnabled, IloggerLevel) {
-        const loggerEnabled = IloggerEnabled || true;
+        const loggerEnabled = IloggerEnabled ?? true;
-        const loggerLevel = IloggerLevel || "warn";
+        const loggerLevel = IloggerLevel ?? "warn";
         this.logger = new Logger(loggerEnabled, loggerLevel, 'ValidationUtils');
+        this._onceLogCache = new Set();
   }
 
+    _logOnce(level, onceKey, message) {
+        if (onceKey && this._onceLogCache.has(onceKey)) {
+            return;
+        }
+        if (onceKey) {
+            this._onceLogCache.add(onceKey);
+        }
+        if (typeof this.logger?.[level] === "function") {
+            this.logger[level](message);
+        }
+    }
+
     constrain(value, min, max) {
         if (typeof value !== "number") {
             this.logger?.warn(`Value '${value}' is not a number. Defaulting to ${min}.`);
@@ -64,17 +91,25 @@ class ValidationUtils {
             delete config[key];
             }
         }
-    
+
         // Validate each key in the schema and loop over wildcards if they are not in schema
         for ( const key in schema ) {
 
-            if (key === "rules" || key === "description" || key === "schema") {
+            if (key === "rules" || key === "description" || key === "schema" || key === "version") {
                 continue;
               }
 
             const fieldSchema = schema[key];
+
+            // Skip non-object schema entries (e.g. primitive values injected by migration)
+            if (fieldSchema === null || typeof fieldSchema !== 'object') {
+                this.logger.debug(`${name}.${key} has a non-object schema entry (${typeof fieldSchema}). Skipping.`);
+                validatedConfig[key] = fieldSchema;
+                continue;
+            }
+
             const { rules = {} } = fieldSchema;
-    
+
             // Default to the schema's default value if the key is missing
             if (config[key] === undefined) {
                 if (fieldSchema.default === undefined) {
@@ -96,7 +131,7 @@ class ValidationUtils {
                     continue;
                     }
                 } else {
-                    this.logger.info(`There is no value provided for ${name}.${key}. Using default value.`);
+                    this.logger.debug(`No value provided for ${name}.${key}. Using default value.`);
                     configValue = fieldSchema.default;
                 }
                 //continue;
@@ -105,77 +140,58 @@ class ValidationUtils {
                 configValue = config[key] !== undefined ? config[key] : fieldSchema.default;
             }
 
-            // Attempt to parse the value to the expected type if possible
+            // Handle curve types (they use continue, so handle separately)
-            switch (rules.type) {
+            if (rules.type === "curve") {
-
+                validatedConfig[key] = validateCurve(configValue, fieldSchema.default, this.logger);
-                case "number":
+                continue;
-                    configValue = this.validateNumber(configValue, rules, fieldSchema, name, key);
-                    break;
-                case "boolean":
-                    configValue = this.validateBoolean(configValue, name, key);
-                    break;
-    
-                case "string":
-                    configValue = this.validateString(configValue,rules,fieldSchema, name, key);
-                    break;
-    
-                case "array":
-                    configValue = this.validateArray(configValue, rules, fieldSchema, name, key);
-                    break;
-                
-                case "set":
-                    configValue = this.validateSet(configValue, rules, fieldSchema, name, key);
-                    break;
-    
-                case "object":
-                    configValue = this.validateObject(configValue, rules, fieldSchema, name, key);
-                    break;
-
-                case "enum":
-                    configValue = this.validateEnum(configValue, rules, fieldSchema, name, key);
-                    break;
-
-                case "curve":
-                    validatedConfig[key] = this.validateCurve(configValue,fieldSchema.default);
-                    continue;
-
-                case "machineCurve":
-                    validatedConfig[key] = this.validateMachineCurve(configValue,fieldSchema.default);
-                    continue;
-
-                case "integer":
-                    validatedConfig[key] = this.validateInteger(configValue, rules, fieldSchema, name, key);
-                    continue;
-
-                case undefined:
-                    // If we see 'rules.schema' but no 'rules.type', treat it like an object:
-                    if (rules.schema && !rules.type) {
-                        // Log a warning and skip the extra pass for nested schema
-                        this.logger.warn(
-                            `${name}.${key} has a nested schema but no type. ` +
-                            `Treating it as type="object" to skip extra pass.`
-                        );
-                    } else {
-                        // Otherwise, fallback to your existing "validateUndefined" logic
-                        validatedConfig[key] = this.validateUndefined(configValue, fieldSchema, name, key);
-                    }
-                    continue;
-
-                default:
-                    this.logger.warn(`${name}.${key} has an unknown validation type: ${rules.type}. Skipping validation.`);
-                    validatedConfig[key] = fieldSchema.default;
-                    continue;
             }
-    
+            if (rules.type === "machineCurve") {
+                validatedConfig[key] = validateMachineCurve(configValue, fieldSchema.default, this.logger);
+                continue;
+            }
+
+            // Handle object type (needs recursive validateSchema reference)
+            if (rules.type === "object") {
+                validatedConfig[key] = validateObject(
+                    configValue, rules, fieldSchema, name, key,
+                    (c, s, n) => this.validateSchema(c, s, n),
+                    this.logger
+                );
+                continue;
+            }
+
+            // Handle undefined type
+            if (rules.type === undefined) {
+                if (rules.schema && !rules.type) {
+                    this.logger.warn(
+                        `${name}.${key} has a nested schema but no type. ` +
+                        `Treating it as type="object" to skip extra pass.`
+                    );
+                } else {
+                    validatedConfig[key] = this.validateUndefined(configValue, fieldSchema, name, key);
+                }
+                continue;
+            }
+
+            // Use the strategy registry for all other types
+            const handler = VALIDATORS[rules.type];
+            if (handler) {
+                configValue = handler(configValue, rules, fieldSchema, name, key, this.logger);
+            } else {
+                this.logger.warn(`${name}.${key} has an unknown validation type: ${rules.type}. Skipping validation.`);
+                validatedConfig[key] = fieldSchema.default;
+                continue;
+            }
+
             // Assign the validated or converted value
             validatedConfig[key] = configValue;
         }
-    
+
         // Ignore unknown keys by not processing them at all
         this.logger.info(`Validation completed for ${name}.`);
 
         return validatedConfig;
-    } 
+    }
 
     removeUnwantedKeys(obj) {
 
@@ -191,7 +207,7 @@ class ValidationUtils {
               continue;
             }
 
-            if("default" in v){
+            if(v && typeof v === "object" && "default" in v){
                 //put the default value in the object
                 newObj[k] = v.default;
                 continue;
@@ -203,318 +219,6 @@ class ValidationUtils {
         }
         return obj;
     }
-      
-    validateMachineCurve(curve, defaultCurve) {
-        if (!curve || typeof curve !== "object" || Object.keys(curve).length === 0) {
-            this.logger.warn("Curve is missing or invalid. Defaulting to basic curve.");
-            return defaultCurve;
-        }
-
-        // Validate that nq and np exist and are objects
-        const { nq, np } = curve;
-        if (!nq || typeof nq !== "object" || !np || typeof np !== "object") {
-            this.logger.warn("Curve must contain valid 'nq' and 'np' objects. Defaulting to basic curve.");
-            return defaultCurve;
-        }
-
-        // Validate that each dimension key points to a valid object with x and y arrays
-        const validatedNq = this.validateDimensionStructure(nq, "nq");
-        const validatedNp = this.validateDimensionStructure(np, "np");
-
-        if (!validatedNq || !validatedNp) {
-            return defaultCurve;
-        }
-
-        return { nq: validatedNq, np: validatedNp }; // Return the validated curve
-    }
-
-    validateCurve(curve, defaultCurve) {
-        if (!curve || typeof curve !== "object" || Object.keys(curve).length === 0) {
-            this.logger.warn("Curve is missing or invalid. Defaulting to basic curve.");
-            return defaultCurve;
-        }
-
-        // Validate that each dimension key points to a valid object with x and y arrays
-        const validatedCurve = this.validateDimensionStructure(curve, "curve");
-        if (!validatedCurve) {
-            return defaultCurve;
-        }
-
-        return validatedCurve; // Return the validated curve
-    }
-
-    validateDimensionStructure(dimension, name) {
-        const validatedDimension = {};
-
-        for (const [key, value] of Object.entries(dimension)) {
-            // Validate that each key points to an object with x and y arrays
-            if (typeof value !== "object") {
-                this.logger.warn(`Dimension '${name}' key '${key}' is not valid. Returning to default.`);
-                return false;
-            }
-            // Validate that x and y are arrays
-            else if (!Array.isArray(value.x) || !Array.isArray(value.y)) {
-                this.logger.warn(`Dimension '${name}' key '${key}' is missing x or y arrays. Converting to arrays.`);
-                // Try to convert to arrays first
-                value.x = Object.values(value.x);
-                value.y = Object.values(value.y);
-
-                // If still not arrays return false
-                if (!Array.isArray(value.x) || !Array.isArray(value.y)) {
-                    this.logger.warn(`Dimension '${name}' key '${key}' is not valid. Returning to default.`);
-                    return false;
-                }
-            }
-            // Validate that x and y arrays are the same length
-            else if (value.x.length !== value.y.length) {
-                this.logger.warn(`Dimension '${name}' key '${key}' has mismatched x and y lengths. Ignoring this key.`);
-                return false;
-            }
-            // Validate that x values are in ascending order
-            else if (!this.isSorted(value.x)) {
-                this.logger.warn(`Dimension '${name}' key '${key}' has unsorted x values. Sorting...`);
-                return false;
-            }
-            // Validate that x values are unique
-            else if (!this.isUnique(value.x)) {
-                this.logger.warn(`Dimension '${name}' key '${key}' has duplicate x values. Removing duplicates...`);
-                return false;
-            }
-            // Validate that y values are numbers
-            else if (!this.areNumbers(value.y)) {
-                this.logger.warn(`Dimension '${name}' key '${key}' has non-numeric y values. Ignoring this key.`);
-                return false;
-            }
-
-            validatedDimension[key] = value;
-        }
-        return validatedDimension;
-    }
-
-    isSorted(arr) {
-        return arr.every((_, i) => i === 0 || arr[i] >= arr[i - 1]);
-    }
-
-    isUnique(arr) {
-        return new Set(arr).size === arr.length;
-    }
-
-    areNumbers(arr) {
-        return arr.every((x) => typeof x === "number");
-    }
-
-    validateNumber(configValue, rules, fieldSchema, name, key) {
-
-        if (typeof configValue !== "number") {
-            const parsedValue = parseFloat(configValue);
-            if (!isNaN(parsedValue)) {
-                this.logger.warn(`${name}.${key} was parsed to a number: ${configValue} -> ${parsedValue}`);
-                configValue = parsedValue;
-            }
-        }
-
-        if (rules.min !== undefined && configValue < rules.min) {
-            this.logger.warn(
-                `${name}.${key} is below the minimum (${rules.min}). Using default value.`
-            );
-            return fieldSchema.default;
-        }
-        if (rules.max !== undefined && configValue > rules.max) {
-            this.logger.warn(
-                `${name}.${key} exceeds the maximum (${rules.max}). Using default value.`
-            );
-            return fieldSchema.default;
-        }
-        
-        this.logger.debug(`${name}.${key} is a valid number: ${configValue}`);
-
-        return configValue;
-    }
-
-
-    validateInteger(configValue, rules, fieldSchema, name, key) {
-        if (typeof configValue !== "number" || !Number.isInteger(configValue)) {
-            const parsedValue = parseInt(configValue, 10);
-            if (!isNaN(parsedValue) && Number.isInteger(parsedValue)) {
-                this.logger.warn(`${name}.${key} was parsed to an integer: ${configValue} -> ${parsedValue}`);
-                configValue = parsedValue;
-            } else {
-                this.logger.warn(`${name}.${key} is not a valid integer. Using default value.`);
-                return fieldSchema.default;
-            }
-        }
-
-        if (rules.min !== undefined && configValue < rules.min) {
-            this.logger.warn(`${name}.${key} is below the minimum integer value (${rules.min}). Using default value.`);
-            return fieldSchema.default;
-        }
-
-        if (rules.max !== undefined && configValue > rules.max) {
-            this.logger.warn(`${name}.${key} exceeds the maximum integer value (${rules.max}). Using default value.`);
-            return fieldSchema.default;
-        }
-
-        this.logger.debug(`${name}.${key} is a valid integer: ${configValue}`);
-        return configValue;
-    }
-
-    validateBoolean(configValue, name, key) {
-        if (typeof configValue !== "boolean") {
-            if (configValue === "true" || configValue === "false") {
-                const parsedValue = configValue === "true";
-                this.logger.debug(`${name}.${key} was parsed to a boolean: ${configValue} -> ${parsedValue}`);
-                configValue = parsedValue;
-            }
-        }
-        return configValue;
-    }
-
-    validateString(configValue, rules, fieldSchema, name, key) {
-        let newConfigValue = configValue;
-
-        if (typeof configValue !== "string") {
-            //check if the value is nullable
-            if(rules.nullable){
-                if(configValue === null){
-                    return null;
-                }
-            }
-
-            this.logger.warn(`${name}.${key} is not a string. Trying to convert to string.`);
-            newConfigValue = String(configValue); // Coerce to string if not already
-        }
-        
-        //check if the string is a valid string after conversion
-        if (typeof newConfigValue !== "string") {
-            this.logger.warn(`${name}.${key} is not a valid string. Using default value.`);
-            return fieldSchema.default;
-        }
-
-        // Check for uppercase characters and convert to lowercase if present
-        if (newConfigValue !== newConfigValue.toLowerCase()) {
-            this.logger.warn(`${name}.${key} contains uppercase characters. Converting to lowercase: ${newConfigValue} -> ${newConfigValue.toLowerCase()}`);
-            newConfigValue = newConfigValue.toLowerCase();
-        }
-
-        return newConfigValue;
-    }
-
-    validateSet(configValue, rules, fieldSchema, name, key) {
-        // 1. Ensure we have a Set. If not, use default.
-        if (!(configValue instanceof Set)) {
-            this.logger.info(`${name}.${key} is not a Set. Converting to one using default value.`);
-            return new Set(fieldSchema.default);
-        }
-    
-        // 2. Convert the Set to an array for easier filtering.
-        const validatedArray = [...configValue]
-            .filter((item) => {
-                // 3. Filter based on `rules.itemType`.
-                switch (rules.itemType) {
-                    case "number":
-                        return typeof item === "number";
-                    case "string":
-                        return typeof item === "string";
-                    case "null":
-                        // "null" might mean no type restriction (your usage may vary).
-                        return true;
-                    default:
-                        // Fallback if itemType is something else
-                        return typeof item === rules.itemType;
-                }
-            })
-            .slice(0, rules.maxLength || Infinity);
-    
-        // 4. Check if the filtered array meets the minimum length.
-        if (validatedArray.length < (rules.minLength || 1)) {
-            this.logger.warn(
-                `${name}.${key} contains fewer items than allowed (${rules.minLength}). Using default value.`
-            );
-            return new Set(fieldSchema.default);
-        }
-    
-        // 5. Return a new Set containing only the valid items.
-        return new Set(validatedArray);
-    }
-
-    validateArray(configValue, rules, fieldSchema, name, key) {
-        if (!Array.isArray(configValue)) {
-            this.logger.info(`${name}.${key} is not an array. Using default value.`);
-            return fieldSchema.default;
-        }
-
-        // Validate individual items in the array
-        const validatedArray = configValue
-            .filter((item) => {
-                switch (rules.itemType) {
-                    case "number":
-                        return typeof item === "number";
-                    case "string":
-                        return typeof item === "string";
-                    case "null":
-                        // anything goes
-                        return true;
-                    default:
-                        return typeof item === rules.itemType;
-                }
-            })
-            .slice(0, rules.maxLength || Infinity);
-
-        if (validatedArray.length < (rules.minLength || 1)) {
-            this.logger.warn(
-                `${name}.${key} contains fewer items than allowed (${rules.minLength}). Using default value.`
-            );
-            return fieldSchema.default;
-        }
-
-        return validatedArray;
-    }
-
-    validateObject(configValue, rules, fieldSchema, name, key) {
-        if (typeof configValue !== "object" || Array.isArray(configValue)) {
-            this.logger.warn(`${name}.${key} is not a valid object. Using default value.`);
-            return fieldSchema.default;
-        }
-
-        if (rules.schema) {
-            // Recursively validate nested objects if a schema is defined
-            return this.validateSchema(configValue || {}, rules.schema, `${name}.${key}`);
-        } else {
-            // If no schema is defined, log a warning and use the default
-            this.logger.warn(`${name}.${key} is an object with no schema. Using default value.`);
-            return fieldSchema.default;
-        }
-    }
-
-    validateEnum(configValue, rules, fieldSchema, name, key) {
-
-        if (Array.isArray(rules.values)) {
-
-            //if value is null take default
-            if(configValue === null){
-                this.logger.warn(`${name}.${key} is null. Using default value.`);
-                return fieldSchema.default;
-            }
-
-            const validValues = rules.values.map(e => e.value.toLowerCase());
-
-            //remove caps
-            configValue = configValue.toLowerCase();
-
-            if (!validValues.includes(configValue)) {
-                this.logger.warn(
-                    `${name}.${key} has an invalid value : ${configValue}. Allowed values: [${validValues.join(", ")}]. Using default value.`
-                );
-                return fieldSchema.default;
-            }
-        } else {
-            this.logger.warn(
-                `${name}.${key} is an enum with no 'values' array. Using default value.`
-            );
-            return fieldSchema.default;
-        }
-        return configValue;
-    }
 
     validateUndefined(configValue, fieldSchema, name, key) {
         if (typeof configValue === "object" && !Array.isArray(configValue)) {
@@ -523,7 +227,7 @@ class ValidationUtils {
 
             // Recursively validate the nested object
             return this.validateSchema( configValue || {}, fieldSchema, `${name}.${key}`);
-            } 
+            }
             else {
                 this.logger.warn(`${name}.${key} has no defined rules. Using default value.`);
                 return fieldSchema.default;

src/helper/validators/collectionValidators.js

@@ -0,0 +1,66 @@
+/**
+ * Standalone collection validation functions extracted from validationUtils.js.
+ */
+
+function validateArray(configValue, rules, fieldSchema, name, key, logger) {
+    if (!Array.isArray(configValue)) {
+        logger.info(`${name}.${key} is not an array. Using default value.`);
+        return fieldSchema.default;
+    }
+    const validatedArray = configValue
+        .filter((item) => {
+            switch (rules.itemType) {
+                case "number": return typeof item === "number";
+                case "string": return typeof item === "string";
+                case "null": return true;
+                default: return typeof item === rules.itemType;
+            }
+        })
+        .slice(0, rules.maxLength || Infinity);
+    if (validatedArray.length < (rules.minLength || 1)) {
+        logger.warn(
+            `${name}.${key} contains fewer items than allowed (${rules.minLength}). Using default value.`
+        );
+        return fieldSchema.default;
+    }
+    return validatedArray;
+}
+
+function validateSet(configValue, rules, fieldSchema, name, key, logger) {
+    if (!(configValue instanceof Set)) {
+        logger.info(`${name}.${key} is not a Set. Converting to one using default value.`);
+        return new Set(fieldSchema.default);
+    }
+    const validatedArray = [...configValue]
+        .filter((item) => {
+            switch (rules.itemType) {
+                case "number": return typeof item === "number";
+                case "string": return typeof item === "string";
+                case "null": return true;
+                default: return typeof item === rules.itemType;
+            }
+        })
+        .slice(0, rules.maxLength || Infinity);
+    if (validatedArray.length < (rules.minLength || 1)) {
+        logger.warn(
+            `${name}.${key} contains fewer items than allowed (${rules.minLength}). Using default value.`
+        );
+        return new Set(fieldSchema.default);
+    }
+    return new Set(validatedArray);
+}
+
+function validateObject(configValue, rules, fieldSchema, name, key, validateSchemaFn, logger) {
+    if (typeof configValue !== "object" || Array.isArray(configValue)) {
+        logger.warn(`${name}.${key} is not a valid object. Using default value.`);
+        return fieldSchema.default;
+    }
+    if (rules.schema) {
+        return validateSchemaFn(configValue || {}, rules.schema, `${name}.${key}`);
+    } else {
+        logger.warn(`${name}.${key} is an object with no schema. Using default value.`);
+        return fieldSchema.default;
+    }
+}
+
+module.exports = { validateArray, validateSet, validateObject };

src/helper/validators/curveValidator.js

@@ -0,0 +1,108 @@
+/**
+ * Curve validation strategies for machine curves and generic curves.
+ * Extracted from validationUtils.js for modularity.
+ */
+
+function isSorted(arr) {
+    return arr.every((_, i) => i === 0 || arr[i] >= arr[i - 1]);
+}
+
+function isUnique(arr) {
+    return new Set(arr).size === arr.length;
+}
+
+function areNumbers(arr) {
+    return arr.every((x) => typeof x === "number");
+}
+
+function validateDimensionStructure(dimension, name, logger) {
+    const validatedDimension = {};
+
+    for (const [key, value] of Object.entries(dimension)) {
+        if (typeof value !== "object") {
+            logger.warn(`Dimension '${name}' key '${key}' is not valid. Returning to default.`);
+            return false;
+        }
+        else if (!Array.isArray(value.x) || !Array.isArray(value.y)) {
+            logger.warn(`Dimension '${name}' key '${key}' is missing x or y arrays. Converting to arrays.`);
+            value.x = Object.values(value.x);
+            value.y = Object.values(value.y);
+            if (!Array.isArray(value.x) || !Array.isArray(value.y)) {
+                logger.warn(`Dimension '${name}' key '${key}' is not valid. Returning to default.`);
+                return false;
+            }
+        }
+        else if (value.x.length !== value.y.length) {
+            logger.warn(`Dimension '${name}' key '${key}' has mismatched x and y lengths. Ignoring this key.`);
+            return false;
+        }
+        else if (!isSorted(value.x)) {
+            logger.warn(`Dimension '${name}' key '${key}' has unsorted x values. Sorting...`);
+            const indices = value.x.map((_v, i) => i);
+            indices.sort((a, b) => value.x[a] - value.x[b]);
+            value.x = indices.map(i => value.x[i]);
+            value.y = indices.map(i => value.y[i]);
+        }
+        if (!isUnique(value.x)) {
+            logger.warn(`Dimension '${name}' key '${key}' has duplicate x values. Removing duplicates...`);
+            const seen = new Set();
+            const uniqueX = [];
+            const uniqueY = [];
+            for (let i = 0; i < value.x.length; i++) {
+                if (!seen.has(value.x[i])) {
+                    seen.add(value.x[i]);
+                    uniqueX.push(value.x[i]);
+                    uniqueY.push(value.y[i]);
+                }
+            }
+            value.x = uniqueX;
+            value.y = uniqueY;
+        }
+        if (!areNumbers(value.y)) {
+            logger.warn(`Dimension '${name}' key '${key}' has non-numeric y values. Ignoring this key.`);
+            return false;
+        }
+
+        validatedDimension[key] = value;
+    }
+    return validatedDimension;
+}
+
+function validateCurve(configValue, defaultCurve, logger) {
+    if (!configValue || typeof configValue !== "object" || Object.keys(configValue).length === 0) {
+        logger.warn("Curve is missing or invalid. Defaulting to basic curve.");
+        return defaultCurve;
+    }
+    const validatedCurve = validateDimensionStructure(configValue, "curve", logger);
+    if (!validatedCurve) {
+        return defaultCurve;
+    }
+    return validatedCurve;
+}
+
+function validateMachineCurve(configValue, defaultCurve, logger) {
+    if (!configValue || typeof configValue !== "object" || Object.keys(configValue).length === 0) {
+        logger.warn("Curve is missing or invalid. Defaulting to basic curve.");
+        return defaultCurve;
+    }
+    const { nq, np } = configValue;
+    if (!nq || typeof nq !== "object" || !np || typeof np !== "object") {
+        logger.warn("Curve must contain valid 'nq' and 'np' objects. Defaulting to basic curve.");
+        return defaultCurve;
+    }
+    const validatedNq = validateDimensionStructure(nq, "nq", logger);
+    const validatedNp = validateDimensionStructure(np, "np", logger);
+    if (!validatedNq || !validatedNp) {
+        return defaultCurve;
+    }
+    return { nq: validatedNq, np: validatedNp };
+}
+
+module.exports = {
+    validateCurve,
+    validateMachineCurve,
+    validateDimensionStructure,
+    isSorted,
+    isUnique,
+    areNumbers
+};

src/helper/validators/typeValidators.js

@@ -0,0 +1,158 @@
+/**
+ * Standalone type validation functions extracted from validationUtils.js.
+ */
+
+function validateNumber(configValue, rules, fieldSchema, name, key, logger) {
+    if (typeof configValue !== "number") {
+        const parsedValue = parseFloat(configValue);
+        if (!isNaN(parsedValue)) {
+            logger.warn(`${name}.${key} was parsed to a number: ${configValue} -> ${parsedValue}`);
+            configValue = parsedValue;
+        }
+    }
+    if (rules.min !== undefined && configValue < rules.min) {
+        logger.warn(`${name}.${key} is below the minimum (${rules.min}). Using default value.`);
+        return fieldSchema.default;
+    }
+    if (rules.max !== undefined && configValue > rules.max) {
+        logger.warn(`${name}.${key} exceeds the maximum (${rules.max}). Using default value.`);
+        return fieldSchema.default;
+    }
+    logger.debug(`${name}.${key} is a valid number: ${configValue}`);
+    return configValue;
+}
+
+function validateInteger(configValue, rules, fieldSchema, name, key, logger) {
+    if (typeof configValue !== "number" || !Number.isInteger(configValue)) {
+        const parsedValue = parseInt(configValue, 10);
+        if (!isNaN(parsedValue) && Number.isInteger(parsedValue)) {
+            logger.warn(`${name}.${key} was parsed to an integer: ${configValue} -> ${parsedValue}`);
+            configValue = parsedValue;
+        } else {
+            logger.warn(`${name}.${key} is not a valid integer. Using default value.`);
+            return fieldSchema.default;
+        }
+    }
+    if (rules.min !== undefined && configValue < rules.min) {
+        logger.warn(`${name}.${key} is below the minimum integer value (${rules.min}). Using default value.`);
+        return fieldSchema.default;
+    }
+    if (rules.max !== undefined && configValue > rules.max) {
+        logger.warn(`${name}.${key} exceeds the maximum integer value (${rules.max}). Using default value.`);
+        return fieldSchema.default;
+    }
+    logger.debug(`${name}.${key} is a valid integer: ${configValue}`);
+    return configValue;
+}
+
+function validateBoolean(configValue, name, key, logger) {
+    if (typeof configValue !== "boolean") {
+        if (configValue === "true" || configValue === "false") {
+            const parsedValue = configValue === "true";
+            logger.debug(`${name}.${key} was parsed to a boolean: ${configValue} -> ${parsedValue}`);
+            configValue = parsedValue;
+        }
+    }
+    return configValue;
+}
+
+function _isUnitLikeField(path) {
+    const normalized = String(path || "").toLowerCase();
+    if (!normalized) return false;
+    return /(^|\.)([a-z0-9]*unit|units)(\.|$)/.test(normalized)
+        || normalized.includes(".curveunits.");
+}
+
+function _resolveStringNormalizeMode(path) {
+    const normalized = String(path || "").toLowerCase();
+    if (!normalized) return "none";
+
+    if (_isUnitLikeField(normalized)) return "none";
+    if (normalized.endsWith(".name")) return "none";
+    if (normalized.endsWith(".model")) return "none";
+    if (normalized.endsWith(".supplier")) return "none";
+    if (normalized.endsWith(".role")) return "none";
+    if (normalized.endsWith(".description")) return "none";
+
+    if (normalized.endsWith(".softwaretype")) return "lowercase";
+    if (normalized.endsWith(".type")) return "lowercase";
+    if (normalized.endsWith(".category")) return "lowercase";
+
+    return "lowercase";
+}
+
+function validateString(configValue, rules, fieldSchema, name, key, logger) {
+    let newConfigValue = configValue;
+
+    if (typeof configValue !== "string") {
+        //check if the value is nullable
+        if(rules.nullable){
+            if(configValue === null){
+                return null;
+            }
+        }
+
+        logger.warn(`${name}.${key} is not a string. Trying to convert to string.`);
+        newConfigValue = String(configValue); // Coerce to string if not already
+    }
+
+    //check if the string is a valid string after conversion
+    if (typeof newConfigValue !== "string") {
+        logger.warn(`${name}.${key} is not a valid string. Using default value.`);
+        return fieldSchema.default;
+    }
+
+    const keyString = `${name}.${key}`;
+    const normalizeMode = rules.normalize || _resolveStringNormalizeMode(keyString);
+    const preserveCase = normalizeMode !== "lowercase";
+
+    // Check for uppercase characters and convert to lowercase if present
+    if (!preserveCase && newConfigValue !== newConfigValue.toLowerCase()) {
+        logger.info(
+            `${name}.${key} normalized to lowercase: ${newConfigValue} -> ${newConfigValue.toLowerCase()}`
+        );
+        newConfigValue = newConfigValue.toLowerCase();
+    }
+
+    return newConfigValue;
+}
+
+function validateEnum(configValue, rules, fieldSchema, name, key, logger) {
+    if (Array.isArray(rules.values)) {
+        //if value is null take default
+        if(configValue === null){
+            logger.warn(`${name}.${key} is null. Using default value.`);
+            return fieldSchema.default;
+        }
+
+        if (typeof configValue !== "string") {
+            logger.warn(`${name}.${key} is not a valid enum string. Using default value.`);
+            return fieldSchema.default;
+        }
+
+        const validValues = rules.values.map(e => e.value.toLowerCase());
+
+        //remove caps
+        configValue = configValue.toLowerCase();
+        if (!validValues.includes(configValue)) {
+            logger.warn(
+                `${name}.${key} has an invalid value : ${configValue}. Allowed values: [${validValues.join(", ")}]. Using default value.`
+            );
+            return fieldSchema.default;
+        }
+    } else {
+        logger.warn(
+            `${name}.${key} is an enum with no 'values' array. Using default value.`
+        );
+        return fieldSchema.default;
+    }
+    return configValue;
+}
+
+module.exports = {
+    validateNumber,
+    validateInteger,
+    validateBoolean,
+    validateString,
+    validateEnum,
+};

src/measurements/Measurement.js

@@ -69,8 +69,10 @@ class Measurement {
   }
 
   getLaggedValue(lag){
-    if(this.values.length <= lag) return null;
+    if (lag < 0) throw new Error('lag must be >= 0');
-    return this.values[this.values.length - lag];
+    const index = this.values.length - 1 - lag;
+    if (index < 0) return null;
+    return this.values[index];
   }
 
   getLaggedSample(lag){
@@ -113,8 +115,7 @@ class Measurement {
   
   // Create a new measurement that is the difference between two positions
   static createDifference(upstreamMeasurement, downstreamMeasurement) {
-    console.log('hello:');
+    if (upstreamMeasurement.type !== downstreamMeasurement.type ||
-    if (upstreamMeasurement.type !== downstreamMeasurement.type || 
         upstreamMeasurement.variant !== downstreamMeasurement.variant) {
       throw new Error('Cannot calculate difference between different measurement types or variants');
     }
@@ -178,7 +179,7 @@ class Measurement {
     
     try {
       const convertedValues = this.values.map(value => 
-        convertModule.convert(value).from(this.unit).to(targetUnit)
+        convertModule(value).from(this.unit).to(targetUnit)
       );
       
       const newMeasurement = new Measurement(

src/measurements/MeasurementContainer.js

@@ -1,21 +1,24 @@
 const MeasurementBuilder = require('./MeasurementBuilder');
 const EventEmitter = require('events');
 const convertModule = require('../convert/index');
+const { POSITIONS } = require('../constants/positions');
 
 class MeasurementContainer {
   constructor(options = {},logger) {
+    this.logger = logger || null;
     this.emitter = new EventEmitter();
     this.measurements = {};
     this.windowSize = options.windowSize || 10; // Default window size
     
     // For chaining context
+    this._currentChildId = null;
     this._currentType = null;
     this._currentVariant = null;
     this._currentPosition = null;
     this._currentDistance = null;
     this._unit = null;
 
-    // Default units for each measurement type
+    // Default units for each measurement type (ingress/preferred)
     this.defaultUnits = {
       pressure: 'mbar',
       flow: 'm3/h',
@@ -25,10 +28,48 @@ class MeasurementContainer {
       length: 'm',
       ...options.defaultUnits // Allow override
     };
+
+    // Canonical storage unit map (single conversion anchor per measurement type)
+    this.canonicalUnits = {
+      pressure: 'Pa',
+      atmPressure: 'Pa',
+      flow: 'm3/s',
+      power: 'W',
+      hydraulicPower: 'W',
+      temperature: 'K',
+      volume: 'm3',
+      length: 'm',
+      mass: 'kg',
+      energy: 'J',
+      ...options.canonicalUnits,
+    };
     
     // Auto-conversion settings
     this.autoConvert = options.autoConvert !== false; // Default to true
     this.preferredUnits = options.preferredUnits || {}; // Per-measurement overrides
+    this.storeCanonical = options.storeCanonical === true;
+    this.strictUnitValidation = options.strictUnitValidation === true;
+    this.throwOnInvalidUnit = options.throwOnInvalidUnit === true;
+    this.requireUnitForTypes = new Set(
+      (options.requireUnitForTypes || []).map((t) => String(t).trim().toLowerCase())
+    );
+
+    // Map EVOLV measurement types to convert-module measure families
+    this.measureMap = {
+      pressure: 'pressure',
+      atmpressure: 'pressure',
+      flow: 'volumeFlowRate',
+      power: 'power',
+      hydraulicpower: 'power',
+      reactivepower: 'reactivePower',
+      apparentpower: 'apparentPower',
+      temperature: 'temperature',
+      volume: 'volume',
+      length: 'length',
+      mass: 'mass',
+      energy: 'energy',
+      reactiveenergy: 'reactiveEnergy',
+    };
     
     // For chaining context
     this._currentType = null;
@@ -49,6 +90,11 @@ class MeasurementContainer {
       return this;
   }
 
+  child(childId) {
+    this._currentChildId = childId || 'default';
+    return this;
+  }
+
   setChildName(childName) {
       this.childName = childName;
       return this;
@@ -65,6 +111,11 @@ class MeasurementContainer {
     return this;
   }
 
+  setCanonicalUnit(measurementType, unit) {
+    this.canonicalUnits[measurementType] = unit;
+    return this;
+  }
+
   // Get the target unit for a measurement type
   _getTargetUnit(measurementType) {
     return this.preferredUnits[measurementType] || 
@@ -72,30 +123,115 @@ class MeasurementContainer {
            null;
   }
 
+  _getCanonicalUnit(measurementType) {
+    return this.canonicalUnits[measurementType] || null;
+  }
+
+  _normalizeType(measurementType) {
+    return String(measurementType || '').trim().toLowerCase();
+  }
+
+  _describeUnit(unit) {
+    if (typeof unit !== 'string' || unit.trim() === '') return null;
+    try {
+      return convertModule().describe(unit.trim());
+    } catch (error) {
+      return null;
+    }
+  }
+
+  isUnitCompatible(measurementType, unit) {
+    const desc = this._describeUnit(unit);
+    if (!desc) return false;
+    const normalizedType = this._normalizeType(measurementType);
+    const expectedMeasure = this.measureMap[normalizedType];
+    if (!expectedMeasure) return true;
+    return desc.measure === expectedMeasure;
+  }
+
+  _handleUnitViolation(message) {
+    if (this.throwOnInvalidUnit) {
+      throw new Error(message);
+    }
+    if (this.logger) {
+      this.logger.warn(message);
+    }
+  }
+
+  _resolveUnitPolicy(measurementType, sourceUnit = null) {
+    const normalizedType = this._normalizeType(measurementType);
+    const rawSourceUnit = typeof sourceUnit === 'string' && sourceUnit.trim()
+      ? sourceUnit.trim()
+      : null;
+    const fallbackIngressUnit = this._getTargetUnit(measurementType);
+    const canonicalUnit = this._getCanonicalUnit(measurementType);
+    const resolvedSourceUnit = rawSourceUnit || fallbackIngressUnit || canonicalUnit || null;
+
+    if (this.requireUnitForTypes.has(normalizedType) && !rawSourceUnit) {
+      this._handleUnitViolation(`Missing source unit for required measurement type '${measurementType}'.`);
+      return { valid: false };
+    }
+
+    if (resolvedSourceUnit && !this.isUnitCompatible(measurementType, resolvedSourceUnit)) {
+      this._handleUnitViolation(`Incompatible or unknown source unit '${resolvedSourceUnit}' for measurement type '${measurementType}'.`);
+      return { valid: false };
+    }
+
+    const resolvedStorageUnit = this.storeCanonical
+      ? (canonicalUnit || fallbackIngressUnit || resolvedSourceUnit)
+      : (fallbackIngressUnit || canonicalUnit || resolvedSourceUnit);
+
+    if (resolvedStorageUnit && !this.isUnitCompatible(measurementType, resolvedStorageUnit)) {
+      this._handleUnitViolation(`Incompatible storage unit '${resolvedStorageUnit}' for measurement type '${measurementType}'.`);
+      return { valid: false };
+    }
+
+    return {
+      valid: true,
+      sourceUnit: resolvedSourceUnit,
+      storageUnit: resolvedStorageUnit || null,
+      strictValidation: this.strictUnitValidation,
+    };
+  }
+
+  getUnit(type) {
+    if (!type) return null;
+    if (this.preferredUnits && this.preferredUnits[type]) return this.preferredUnits[type];
+    if (this.defaultUnits && this.defaultUnits[type]) return this.defaultUnits[type];
+    return null;
+  }
+
   // Chainable methods
   type(typeName) {
     this._currentType = typeName;
     this._currentVariant = null;
     this._currentPosition = null;
+    this._currentChildId = null;
     return this;
   }
 
   variant(variantName) {
     if (!this._currentType) {
-      throw new Error('Type must be specified before variant');
+      if (this.logger) {
+        this.logger.warn('variant() ignored: type must be specified before variant');
+      }
+      return this;
     }
     this._currentVariant = variantName;
     this._currentPosition = null;
+    this._currentChildId = null;
     return this;
   }
 
   position(positionValue) {
     if (!this._currentVariant) {
-      throw new Error('Variant must be specified before position');
+      if (this.logger) {
+        this.logger.warn('position() ignored: variant must be specified before position');
+      }
+      return this;
     }
 
-    
+    this._currentPosition = positionValue.toString().toLowerCase();
-    this._currentPosition = positionValue.toString().toLowerCase();;
     
     return this;
   }
@@ -114,34 +250,40 @@ class MeasurementContainer {
   // ENHANCED: Update your existing value method
   value(val, timestamp = Date.now(), sourceUnit = null) {
       if (!this._ensureChainIsValid()) return this;
-      
+
+      const unitPolicy = this._resolveUnitPolicy(this._currentType, sourceUnit);
+      if (!unitPolicy.valid) return this;
+
       const measurement = this._getOrCreateMeasurement();
-      const targetUnit = this._getTargetUnit(this._currentType);
+      const targetUnit = unitPolicy.storageUnit;
-      
+
       let convertedValue = val;
-      let finalUnit = sourceUnit || targetUnit;
+      let finalUnit = targetUnit || unitPolicy.sourceUnit;
 
       // Auto-convert if enabled and units are specified
-      if (this.autoConvert && sourceUnit && targetUnit && sourceUnit !== targetUnit) {
+      if (this.autoConvert && unitPolicy.sourceUnit && targetUnit && unitPolicy.sourceUnit !== targetUnit) {
         try {
-          convertedValue = convertModule(val).from(sourceUnit).to(targetUnit);
+          convertedValue = convertModule(val).from(unitPolicy.sourceUnit).to(targetUnit);
           finalUnit = targetUnit;
           
           if (this.logger) {
-            this.logger.debug(`Auto-converted ${val} ${sourceUnit} to ${convertedValue} ${targetUnit}`);
+            this.logger.debug(`Auto-converted ${val} ${unitPolicy.sourceUnit} to ${convertedValue} ${targetUnit}`);
           }
         } catch (error) {
-          if (this.logger) {
+          const message = `Auto-conversion failed from ${unitPolicy.sourceUnit} to ${targetUnit}: ${error.message}`;
-            this.logger.warn(`Auto-conversion failed from ${sourceUnit} to ${targetUnit}: ${error.message}`);
+          if (this.strictUnitValidation) {
+            this._handleUnitViolation(message);
+            return this;
           }
+          if (this.logger) this.logger.warn(message);
           convertedValue = val;
-          finalUnit = sourceUnit;
+          finalUnit = unitPolicy.sourceUnit;
         }
       }
 
       measurement.setValue(convertedValue, timestamp);
       
-      if (finalUnit && !measurement.unit) {
+      if (finalUnit) {
         measurement.setUnit(finalUnit);
       }
 
@@ -150,7 +292,7 @@ class MeasurementContainer {
         value: convertedValue,
         originalValue: val,
         unit: finalUnit,
-        sourceUnit: sourceUnit,
+        sourceUnit: unitPolicy.sourceUnit,
         timestamp,
         position: this._currentPosition,
         distance: this._currentDistance,
@@ -212,8 +354,6 @@ class MeasurementContainer {
     return requireValues ? measurement.values?.length > 0 : true;
   }
 
-
-
   unit(unitName) {
     if (!this._ensureChainIsValid()) return this;
     
@@ -224,36 +364,47 @@ class MeasurementContainer {
   }
 
   // Terminal operations - get data out
-  get() {
+    get() {
-    if (!this._ensureChainIsValid()) return null;
+      if (!this._ensureChainIsValid()) return null;
-    return this._getOrCreateMeasurement();
+      const variantBucket = this.measurements[this._currentType]?.[this._currentVariant];
-  }
+      if (!variantBucket) return null;
+      const posBucket = variantBucket[this._currentPosition];
+      if (!posBucket) return null;
+
+      // Legacy single measurement
+      if (posBucket?.getCurrentValue) return posBucket;
+
+      // Child-aware: pick requested child, otherwise fall back to default, otherwise first available
+      if (posBucket && typeof posBucket === 'object') {
+        const requestedKey = this._currentChildId || this.childId;
+        const keys = Object.keys(posBucket);
+        if (!keys.length) return null;
+        const measurement =
+          (requestedKey && posBucket[requestedKey]) ||
+          posBucket.default ||
+          posBucket[keys[0]];
+        return measurement || null;
+      }
+
+      return null;
+    }
+
+
 
   getCurrentValue(requestedUnit = null) {
     const measurement = this.get();
     if (!measurement) return null;
-    
     const value = measurement.getCurrentValue();
     if (value === null) return null;
-
+    if (!requestedUnit || !measurement.unit || requestedUnit === measurement.unit) {
-    // Return as-is if no unit conversion requested
-    if (!requestedUnit) {
       return value;
     }
-
+    try {
-    // Convert if needed
+      return convertModule(value).from(measurement.unit).to(requestedUnit);
-    if (measurement.unit && requestedUnit !== measurement.unit) {
+    } catch (error) {
-      try {
+      if (this.logger) this.logger.error(`Unit conversion failed: ${error.message}`);
-        return convertModule(value).from(measurement.unit).to(requestedUnit);
+      return value;
-      } catch (error) {
-        if (this.logger) {
-          this.logger.error(`Unit conversion failed: ${error.message}`);
-        }
-        return value; // Return original value if conversion fails
-      }
     }
-
-    return value;
   }
 
   getAverage(requestedUnit = null) {
@@ -308,7 +459,7 @@ class MeasurementContainer {
     // Convert if needed
     if (measurement.unit && requestedUnit !== measurement.unit) {
       try {
-        const convertedValue = convertModule(value).from(measurement.unit).to(requestedUnit);
+        const convertedValue = convertModule(sample.value).from(measurement.unit).to(requestedUnit);
         //replace old value in sample and return obj
         sample.value = convertedValue ;
         sample.unit = requestedUnit;
@@ -328,7 +479,7 @@ class MeasurementContainer {
   getLaggedSample(lag = 1,requestedUnit = null ){
     const measurement = this.get();
     if (!measurement) return null;
-    
+
     let sample = measurement.getLaggedSample(lag);
     if (sample === null) return null;
 
@@ -340,7 +491,7 @@ class MeasurementContainer {
     // Convert if needed
     if (measurement.unit && requestedUnit !== measurement.unit) {
       try {
-        const convertedValue = convertModule(value).from(measurement.unit).to(requestedUnit);
+        const convertedValue = convertModule(sample.value).from(measurement.unit).to(requestedUnit);
         //replace old value in sample and return obj
         sample.value = convertedValue ;
         sample.unit = requestedUnit;
@@ -357,38 +508,89 @@ class MeasurementContainer {
     return sample;
   }
 
+  sum(type, variant, positions = [], targetUnit = null) {
+    const bucket = this.measurements?.[type]?.[variant];
+    if (!bucket) return 0;
+    return positions
+      .map((pos) => {
+        const posBucket = bucket[pos];
+        if (!posBucket) return 0;
+        return Object.values(posBucket)
+          .map((m) => {
+            if (!m?.getCurrentValue) return 0;
+            const val = m.getCurrentValue();
+            if (val == null) return 0;
+            const fromUnit = m.unit || targetUnit;
+            if (!targetUnit || !fromUnit || fromUnit === targetUnit) return val;
+            try { return convertModule(val).from(fromUnit).to(targetUnit); } catch { return val; }
+          })
+          .reduce((acc, v) => acc + (Number.isFinite(v) ? v : 0), 0);
+      })
+      .reduce((acc, v) => acc + v, 0);
+  }
+
+    getFlattenedOutput(options = {}) {
+      const requestedUnits = options.requestedUnits || (options.usePreferredUnits ? this.preferredUnits : null);
+      const out = {};
+      Object.entries(this.measurements).forEach(([type, variants]) => {
+        Object.entries(variants).forEach(([variant, positions]) => {
+          Object.entries(positions).forEach(([position, entry]) => {
+            // Legacy single series
+            if (entry?.getCurrentValue) {
+              out[`${type}.${variant}.${position}`] = this._resolveOutputValue(type, entry, requestedUnits);
+              return;
+            }
+            // Child-bucketed series
+            if (entry && typeof entry === 'object') {
+              Object.entries(entry).forEach(([childId, m]) => {
+                if (m?.getCurrentValue) {
+                  out[`${type}.${variant}.${position}.${childId}`] = this._resolveOutputValue(type, m, requestedUnits);
+                }
+              });
+            }
+          });
+        });
+      });
+      return out;
+  }
 
   // Difference calculations between positions
-difference({ from = "downstream", to = "upstream", unit: requestedUnit } = {}) {
+  difference({ from = POSITIONS.DOWNSTREAM, to = POSITIONS.UPSTREAM, unit: requestedUnit } = {}) {
-  if (!this._currentType || !this._currentVariant) {
+    if (!this._currentType || !this._currentVariant) {
-    throw new Error("Type and variant must be specified for difference calculation");
+      if (this.logger) {
+        this.logger.warn('difference() ignored: type and variant must be specified');
+      }
+      return null;
+    }
+
+    const get = pos => {
+      const bucket = this.measurements?.[this._currentType]?.[this._currentVariant]?.[pos];
+      if (!bucket) return null;
+      // child-aware bucket: pick current childId/default or first available
+      if (bucket && typeof bucket === 'object' && !bucket.getCurrentValue) {
+        const childKey = this._currentChildId || this.childId || Object.keys(bucket)[0];
+        return bucket?.[childKey] || null;
+      }
+      // legacy single measurement
+      return bucket;
+    };
+
+    const a = get(from);
+    const b = get(to);
+    if (!a || !b || !a.values || !b.values || a.values.length === 0 || b.values.length === 0) {
+      return null;
+    }
+
+    const targetUnit = requestedUnit || a.unit || b.unit;
+    const aVal = this._convertValueToUnit(a.getCurrentValue(), a.unit, targetUnit);
+    const bVal = this._convertValueToUnit(b.getCurrentValue(), b.unit, targetUnit);
+
+    const aAvg = this._convertValueToUnit(a.getAverage(), a.unit, targetUnit);
+    const bAvg = this._convertValueToUnit(b.getAverage(), b.unit, targetUnit);
+
+    return { value: aVal - bVal, avgDiff: aAvg - bAvg, unit: targetUnit, from, to };
   }
 
-  const get = pos =>
-    this.measurements?.[this._currentType]?.[this._currentVariant]?.[pos] || null;
-
-  const a = get(from);
-  const b = get(to);
-  if (!a || !b || a.values.length === 0 || b.values.length === 0) {
-    return null;
-  }
-
-  const targetUnit = requestedUnit || a.unit || b.unit;
-  const aVal = this._convertValueToUnit(a.getCurrentValue(), a.unit, targetUnit);
-  const bVal = this._convertValueToUnit(b.getCurrentValue(), b.unit, targetUnit);
-
-  const aAvg = this._convertValueToUnit(a.getAverage(), a.unit, targetUnit);
-  const bAvg = this._convertValueToUnit(b.getAverage(), b.unit, targetUnit);
-
-  return {
-    value: aVal - bVal,
-    avgDiff: aAvg - bAvg,
-    unit: targetUnit,
-    from,
-    to,
-  };
-}
-
   // Helper methods
   _ensureChainIsValid() {
     if (!this._currentType || !this._currentVariant || !this._currentPosition) {
@@ -410,18 +612,26 @@ difference({ from = "downstream", to = "upstream", unit: requestedUnit } = {}) {
       this.measurements[this._currentType][this._currentVariant] = {};
     }
     
-    if (!this.measurements[this._currentType][this._currentVariant][this._currentPosition]) {
+    const positionKey = this._currentPosition;
-      this.measurements[this._currentType][this._currentVariant][this._currentPosition] = 
+    const childKey = this._currentChildId || this.childId || 'default';
-        new MeasurementBuilder()
+
-          .setType(this._currentType)
+    if (!this.measurements[this._currentType][this._currentVariant][positionKey]) {
-          .setVariant(this._currentVariant)
+      this.measurements[this._currentType][this._currentVariant][positionKey] = {};
-          .setPosition(this._currentPosition)
-          .setWindowSize(this.windowSize)
-          .setDistance(this._currentDistance)
-          .build();
     }
-    
+
-    return this.measurements[this._currentType][this._currentVariant][this._currentPosition];
+    const bucket = this.measurements[this._currentType][this._currentVariant][positionKey];
+
+    if (!bucket[childKey]) {
+      bucket[childKey] = new MeasurementBuilder()
+        .setType(this._currentType)
+        .setVariant(this._currentVariant)
+        .setPosition(positionKey)
+        .setWindowSize(this.windowSize)
+        .setDistance(this._currentDistance)
+        .build();
+    }
+
+    return bucket[childKey];
   }
 
   // Additional utility methods
@@ -431,15 +641,33 @@ difference({ from = "downstream", to = "upstream", unit: requestedUnit } = {}) {
 
   getVariants() {
     if (!this._currentType) {
-      throw new Error('Type must be specified before listing variants');
+      if (this.logger) {
+        this.logger.warn('getVariants() ignored: type must be specified first');
+      }
+      return [];
     }
     return this.measurements[this._currentType] ? 
       Object.keys(this.measurements[this._currentType]) : [];
   }
 
+  _resolveOutputValue(type, measurement, requestedUnits = null) {
+    const value = measurement.getCurrentValue();
+    if (!requestedUnits || value === null || typeof value === 'undefined') {
+      return value;
+    }
+    const targetUnit = requestedUnits[type];
+    if (!targetUnit) {
+      return value;
+    }
+    return this._convertValueToUnit(value, measurement.unit, targetUnit);
+  }
+
   getPositions() {
     if (!this._currentType || !this._currentVariant) {
-      throw new Error('Type and variant must be specified before listing positions');
+      if (this.logger) {
+        this.logger.warn('getPositions() ignored: type and variant must be specified first');
+      }
+      return [];
     }
     
     if (!this.measurements[this._currentType] || 
@@ -455,11 +683,13 @@ difference({ from = "downstream", to = "upstream", unit: requestedUnit } = {}) {
     this._currentType = null;
     this._currentVariant = null;
     this._currentPosition = null;
+    this._currentDistance = null;
+    this._unit = null;
   }
 
   // Helper method for value conversion
   _convertValueToUnit(value, fromUnit, toUnit) {
-    if (!value || !fromUnit || !toUnit || fromUnit === toUnit) {
+    if ((value === null || typeof value === 'undefined') || !fromUnit || !toUnit || fromUnit === toUnit) {
       return value;
     }
 
@@ -478,19 +708,7 @@ difference({ from = "downstream", to = "upstream", unit: requestedUnit } = {}) {
     const type = measurementType || this._currentType;
     if (!type) return [];
 
-    // Map measurement types to convert module measures
+    const convertMeasure = this.measureMap[this._normalizeType(type)];
-    const measureMap = {
-      pressure: 'pressure',
-      flow: 'volumeFlowRate',
-      power: 'power',
-      temperature: 'temperature',
-      volume: 'volume',
-      length: 'length',
-      mass: 'mass',
-      energy: 'energy'
-    };
-
-    const convertMeasure = measureMap[type];
     if (!convertMeasure) return [];
 
     try {
@@ -524,11 +742,11 @@ difference({ from = "downstream", to = "upstream", unit: requestedUnit } = {}) {
 
   _convertPositionStr2Num(positionString) {
     switch(positionString) {
-      case "atEquipment":
+      case POSITIONS.AT_EQUIPMENT:
         return 0;
-      case "upstream":
+      case POSITIONS.UPSTREAM:
         return Number.POSITIVE_INFINITY;
-      case "downstream":
+      case POSITIONS.DOWNSTREAM:
         return Number.NEGATIVE_INFINITY;
       
       default:
@@ -540,16 +758,19 @@ difference({ from = "downstream", to = "upstream", unit: requestedUnit } = {}) {
   }
 
   _convertPositionNum2Str(positionValue) {
-    switch (positionValue) {
+    if (positionValue === 0) {
-    case 0:
+      return POSITIONS.AT_EQUIPMENT;
-      return "atEquipment";
-    case (positionValue < 0):
-      return "upstream";
-    case (positionValue > 0):
-      return "downstream";
-    default:
-      console.log(`Invalid position provided: ${positionValue}`);
     }
+    if (positionValue < 0) {
+      return POSITIONS.UPSTREAM;
+    }
+    if (positionValue > 0) {
+      return POSITIONS.DOWNSTREAM;
+    }
+    if (this.logger) {
+      this.logger.warn(`Invalid position provided: ${positionValue}`);
+    }
+    return null;
   }
 
 }

src/measurements/examples.js

@@ -1,4 +1,7 @@
 const { MeasurementContainer } = require('./index');
+const { POSITIONS } = require('../constants/positions');
+
+const measurements = new MeasurementContainer();
 
 console.log('=== MEASUREMENT CONTAINER EXAMPLES ===\n');
 console.log('This guide shows how to use the MeasurementContainer for storing,');
@@ -27,7 +30,7 @@ console.log('\nSetting pressure values with distances:');
 basicContainer
   .type('pressure')
   .variant('measured')
-  .position('upstream')
+  .position(POSITIONS.UPSTREAM)
   .distance(1.5)
   .value(100)
   .unit('psi');
@@ -35,7 +38,7 @@ basicContainer
 basicContainer
   .type('pressure')
   .variant('measured')
-  .position('downstream')
+  .position(POSITIONS.DOWNSTREAM)
   .distance(5.2)
   .value(95)
   .unit('psi');
@@ -44,7 +47,7 @@ basicContainer
 basicContainer
   .type('pressure')
   .variant('measured')
-  .position('downstream')
+  .position(POSITIONS.DOWNSTREAM)
   .value(90); // distance 5.2 is automatically reused
 
 console.log('✅ Basic setup complete\n');
@@ -53,7 +56,7 @@ console.log('✅ Basic setup complete\n');
 const upstreamPressure = basicContainer
   .type('pressure')
   .variant('measured')
-  .position('upstream')
+  .position(POSITIONS.UPSTREAM)
   .get();
 
 console.log(`Retrieved upstream pressure: ${upstreamPressure.getCurrentValue()} ${upstreamPressure.unit}`);
@@ -83,7 +86,7 @@ console.log('Adding pressure with auto-conversion:');
 autoContainer
   .type('pressure')
   .variant('measured')
-  .position('upstream')
+  .position(POSITIONS.UPSTREAM)
   .distance(0.5)
   .value(1.5, Date.now(), 'bar'); // Input: 1.5 bar → Auto-stored as ~21.76 psi
 
@@ -91,7 +94,7 @@ autoContainer
 const converted = autoContainer
   .type('pressure')
   .variant('measured')
-  .position('upstream')
+  .position(POSITIONS.UPSTREAM)
   .get();
 
 console.log(`Stored as: ${converted.getCurrentValue()} ${converted.unit} (distance=${converted.distance}m)`);
@@ -105,14 +108,14 @@ console.log('--- Example 3: Unit Conversion on Retrieval ---');
 autoContainer
   .type('flow')
   .variant('predicted')
-  .position('upstream')
+  .position(POSITIONS.UPSTREAM)
   .distance(2.4)
   .value(100, Date.now(), 'l/min');
 
 const flowMeasurement = autoContainer
   .type('flow')
   .variant('predicted')
-  .position('upstream')
+  .position(POSITIONS.UPSTREAM)
   .get();
 
 console.log(`Flow in l/min: ${flowMeasurement.getCurrentValue('l/min')}`);
@@ -153,13 +156,13 @@ console.log('--- Example 5: Basic Value Retrieval ---');
 const upstreamVal = basicContainer
   .type('pressure')
   .variant('measured')
-  .position('upstream')
+  .position(POSITIONS.UPSTREAM)
   .getCurrentValue();
 
 const upstreamData = basicContainer
   .type('pressure')
   .variant('measured')
-  .position('upstream')
+  .position(POSITIONS.UPSTREAM)
   .get();
 
 console.log(`Upstream: ${upstreamVal} ${upstreamData.unit} at ${upstreamData.distance}m`);
@@ -167,31 +170,31 @@ console.log(`Upstream: ${upstreamVal} ${upstreamData.unit} at ${upstreamData.dis
 const downstreamVal = basicContainer
   .type('pressure')
   .variant('measured')
-  .position('downstream')
+  .position(POSITIONS.DOWNSTREAM)
   .getCurrentValue();
 
 const downstreamData = basicContainer
   .type('pressure')
   .variant('measured')
-  .position('downstream')
+  .position(POSITIONS.DOWNSTREAM)
   .get();
 
   //check wether a serie exists
-const hasSeries = measurements
+const hasSeries = basicContainer // eslint-disable-line no-unused-vars
   .type("flow")
   .variant("measured")
   .exists();                // true if any position exists
 
-const hasUpstreamValues = measurements
+const hasUpstreamValues = basicContainer // eslint-disable-line no-unused-vars
   .type("flow")
   .variant("measured")
-  .exists({ position: "upstream", requireValues: true });
+  .exists({ position: POSITIONS.UPSTREAM, requireValues: true });
 
 // Passing everything explicitly
-const hasPercent = measurements.exists({
+const hasPercent = basicContainer.exists({ // eslint-disable-line no-unused-vars
   type: "volume",
   variant: "percent",
-  position: "atEquipment",
+  position: POSITIONS.AT_EQUIPMENT,
 });
 
 
@@ -205,7 +208,7 @@ console.log('--- Example 6: Calculations & Statistics ---');
 basicContainer
   .type('flow')
   .variant('predicted')
-  .position('upstream')
+  .position(POSITIONS.UPSTREAM)
   .distance(3.0)
   .value(200)
   .unit('gpm');
@@ -213,7 +216,7 @@ basicContainer
 basicContainer
   .type('flow')
   .variant('predicted')
-  .position('downstream')
+  .position(POSITIONS.DOWNSTREAM)
   .distance(8.5)
   .value(195)
   .unit('gpm');
@@ -221,7 +224,7 @@ basicContainer
 const flowAvg = basicContainer
   .type('flow')
   .variant('predicted')
-  .position('upstream')
+  .position(POSITIONS.UPSTREAM)
   .getAverage();
 
 console.log(`Average upstream flow: ${flowAvg.toFixed(1)} gpm`);
@@ -234,8 +237,8 @@ const pressureDiff = basicContainer
 console.log(`Pressure difference: ${pressureDiff.value} ${pressureDiff.unit}\n`);
 
 //reversable difference
-const deltaP = basicContainer.type("pressure").variant("measured").difference(); // defaults to downstream - upstream
+const deltaP = basicContainer.type("pressure").variant("measured").difference(); // eslint-disable-line no-unused-vars -- defaults to downstream - upstream
-const netFlow = basicContainer.type("flow").variant("measured").difference({ from: "upstream", to: "downstream" });
+const netFlow = basicContainer.type("flow").variant("measured").difference({ from: POSITIONS.UPSTREAM, to: POSITIONS.DOWNSTREAM }); // eslint-disable-line no-unused-vars
 
 // ====================================
 // ADVANCED STATISTICS & HISTORY
@@ -245,7 +248,7 @@ console.log('--- Example 7: Advanced Statistics & History ---');
 basicContainer
   .type('flow')
   .variant('measured')
-  .position('upstream')
+  .position(POSITIONS.UPSTREAM)
   .distance(3.0)
   .value(210)
   .value(215)
@@ -257,7 +260,7 @@ basicContainer
 const stats = basicContainer
   .type('flow')
   .variant('measured')
-  .position('upstream');
+  .position(POSITIONS.UPSTREAM);
 
 const statsData = stats.get();
 
@@ -274,14 +277,14 @@ console.log(`  History: [${allValues.values.join(', ')}]\n`);
 
 console.log('--- Lagged sample comparison ---');
 
-const latest = stats.getCurrentValue();               // existing helper
+const latestSample = stats.getLaggedSample(0);   // newest sample object
-const prevSample = stats.getLaggedValue(1);           // new helper
+const prevSample = stats.getLaggedSample(1);
-const prevPrevSample = stats.getLaggedValue(2);       // optional
+const prevPrevSample = stats.getLaggedSample(2);
 
 if (prevSample) {
-  const delta = latest - prevSample.value;
+  const delta = (latestSample?.value ?? 0) - (prevSample.value ?? 0);
   console.log(
-    `Current vs previous: ${latest} ${statsData.unit} (t=${stats.get().getLatestTimestamp()}) vs ` +
+    `Current vs previous: ${latestSample?.value} ${statsData.unit} (t=${latestSample?.timestamp}) vs ` +
     `${prevSample.value} ${prevSample.unit} (t=${prevSample.timestamp})`
   );
   console.log(`Δ = ${delta.toFixed(2)} ${statsData.unit}`);
@@ -345,6 +348,68 @@ basicContainer.getTypes().forEach(type => {
   }
 });
 
+// ---------------------------------------------------------------------------
+// --- Child Aggregation -----------------------------------------------------
+// ---------------------------------------------------------------------------
+
+// ====================================
+// AGGREGATION WITH CHILD SERIES (sum)
+// ====================================
+console.log();
+console.log('--- Example X: Aggregation with sum() and child series ---');
+
+// Container where flow is stored internally in m3/h
+const aggContainer = new MeasurementContainer({
+  windowSize: 10,
+  defaultUnits: {
+    flow: 'm3/h',
+  },
+});
+
+// Two pumps both feeding the same inlet position
+aggContainer
+  .child('pumpA')
+  .type('flow')
+  .variant('measured')
+  .position('inlet')
+  .value(10, Date.now(), 'm3/h'); // 10 m3/h
+
+aggContainer
+  .child('pumpB')
+  .type('flow')
+  .variant('measured')
+  .position('inlet')
+  .value(15, Date.now(), 'm3/h'); // 15 m3/h
+
+// Another position, e.g. outlet, also with two pumps
+aggContainer
+  .child('pumpA')
+  .type('flow')
+  .variant('measured')
+  .position('outlet')
+  .value(8, Date.now(), 'm3/h'); // 8 m3/h
+
+aggContainer
+  .child('pumpB')
+  .type('flow')
+  .variant('measured')
+  .position('outlet')
+  .value(11, Date.now(), 'm3/h'); // 11 m3/h
+
+
+// 1) Sum only inlet position (children pumpA + pumpB)
+const inletTotal = aggContainer.sum('flow', 'measured', ['inlet']);
+console.log(`Total inlet flow: ${inletTotal} m3/h (expected 25 m3/h)`);
+
+// 2) Sum inlet + outlet positions together
+const totalAll = aggContainer.sum('flow', 'measured', ['inlet', 'outlet']);
+console.log(`Total inlet+outlet flow: ${totalAll} m3/h (expected 44 m3/h)`);
+
+// 3) Same sum but explicitly ask for a target unit (e.g. l/s)
+//    This will use convertModule(...) internally.
+//    If conversion is not supported, it will fall back to the raw value.
+const totalAllLps = aggContainer.sum('flow', 'measured', ['inlet', 'outlet'], 'l/s');
+console.log(`Total inlet+outlet flow in l/s: ${totalAllLps} l/s (converted from m3/h)\n`);
 
 
 console.log('\n✅ All examples complete!\n');

src/menu/aquonSamples.js

@@ -0,0 +1,41 @@
+const fs = require('fs');
+const path = require('path');
+
+class AquonSamplesMenu {
+  constructor(relPath = '../../datasets/assetData') {
+    this.baseDir = path.resolve(__dirname, relPath);
+    this.samplePath = path.resolve(this.baseDir, 'monsterSamples.json');
+    this.specPath = path.resolve(this.baseDir, 'specs/monster/index.json');
+    this.cache = new Map();
+  }
+
+  _loadJSON(filePath, cacheKey) {
+    if (this.cache.has(cacheKey)) {
+      return this.cache.get(cacheKey);
+    }
+
+    if (!fs.existsSync(filePath)) {
+      throw new Error(`Aquon dataset not found: ${filePath}`);
+    }
+
+    const raw = fs.readFileSync(filePath, 'utf8');
+    const parsed = JSON.parse(raw);
+    this.cache.set(cacheKey, parsed);
+    return parsed;
+  }
+
+  getAllMenuData() {
+    const samples = this._loadJSON(this.samplePath, 'samples');
+    const specs = this._loadJSON(this.specPath, 'specs');
+
+    return {
+      samples: samples.samples || [],
+      specs: {
+        defaults: specs.defaults || {},
+        bySample: specs.bySample || {}
+      }
+    };
+  }
+}
+
+module.exports = AquonSamplesMenu;

src/menu/asset.js

@@ -1,62 +1,89 @@
-// asset.js
+const { assetCategoryManager } = require('../../datasets/assetData');
-const fs   = require('fs');
+const assetApiConfig = require('../configs/assetApiConfig.js');
-const path = require('path');
 
 class AssetMenu {
-  /** Define path where to find data of assets in constructor for now */
+  constructor({ manager = assetCategoryManager, softwareType = null } = {}) {
-  constructor(relPath = '../../datasets/assetData') {
+    this.manager = manager;
-    this.baseDir = path.resolve(__dirname, relPath);
+    this.softwareType = softwareType;
-    this.assetData = this._loadJSON('assetData');
+    this.categories = this.manager
+      .listCategories({ withMeta: true })
+      .reduce((map, meta) => {
+        map[meta.softwareType] = this.manager.getCategory(meta.softwareType);
+        return map;
+      }, {});
   }
 
-  _loadJSON(...segments) {
+  normalizeCategory(key) {
-    const filePath = path.resolve(this.baseDir, ...segments) + '.json';
+    const category = this.categories[key];
-    try {
+    if (!category) {
-      return JSON.parse(fs.readFileSync(filePath, 'utf8'));
+      return null;
-    } catch (err) {
-      throw new Error(`Failed to load ${filePath}: ${err.message}`);
     }
-  }
-  
-  /**
-   * ADD THIS METHOD
-   * Compiles all menu data from the file system into a single nested object.
-   * This is run once on the server to pre-load everything.
-   * @returns {object} A comprehensive object with all menu options.
-   */
-  getAllMenuData() {
-    // load the raw JSON once
-    const data = this._loadJSON('assetData');
-    const allData = {};
 
-    data.suppliers.forEach(sup => {
+    return {
-      allData[sup.name] = {};
+      ...category,
-      sup.categories.forEach(cat => {
+      label: category.label || category.softwareType || key,
-        allData[sup.name][cat.name] = {};
+      suppliers: (category.suppliers || []).map((supplier) => ({
-        cat.types.forEach(type => {
+        ...supplier,
-          // here: store the full array of model objects, not just names
+        id: supplier.id || supplier.name,
-          allData[sup.name][cat.name][type.name] = type.models;
+        types: (supplier.types || []).map((type) => ({
-        });
+          ...type,
-      });
+          id: type.id || type.name,
-    });
+          models: (type.models || []).map((model) => ({
-
+            ...model,
-    return allData;
+            id: model.id || model.name,
+            units: model.units || []
+          }))
+        }))
+      }))
+    };
   }
 
-  /**
+  resolveCategoryForNode(nodeName) {
-   * Convert the static initEditor function to a string that can be served to the client
+    const keys = Object.keys(this.categories);
-   * @param {string} nodeName - The name of the node type
+    if (keys.length === 0) {
-   * @returns {string} JavaScript code as a string
+      return null;
-   */
+    }
-getClientInitCode(nodeName) {
-  // step 1: get the two helper strings
-  const htmlCode = this.getHtmlInjectionCode(nodeName);
-  const dataCode   = this.getDataInjectionCode(nodeName);
-  const eventsCode = this.getEventInjectionCode(nodeName);
-  const saveCode = this.getSaveInjectionCode(nodeName);
 
+    if (this.softwareType && this.categories[this.softwareType]) {
+      return this.softwareType;
+    }
 
-   return `
+    if (nodeName) {
+      const normalized = typeof nodeName === 'string' ? nodeName.toLowerCase() : nodeName;
+      if (normalized && this.categories[normalized]) {
+        return normalized;
+      }
+    }
+
+    return keys[0];
+  }
+
+  getAllMenuData(nodeName) {
+    const categoryKey = this.resolveCategoryForNode(nodeName);
+    const selectedCategories = {};
+
+    if (categoryKey && this.categories[categoryKey]) {
+      selectedCategories[categoryKey] = this.normalizeCategory(categoryKey);
+    }
+
+    return {
+      categories: selectedCategories,
+      defaultCategory: categoryKey,
+      apiConfig: {
+        url: `${assetApiConfig.baseUrl}/apis/products/PLC/integration/`,
+        headers: { ...assetApiConfig.headers }
+      }
+    };
+  }
+
+  getClientInitCode(nodeName) {
+    const htmlCode = this.getHtmlInjectionCode(nodeName);
+    const dataCode = this.getDataInjectionCode(nodeName);
+    const eventsCode = this.getEventInjectionCode(nodeName);
+    const syncCode = this.getSyncInjectionCode(nodeName);
+    const saveCode = this.getSaveInjectionCode(nodeName);
+
+    return `
       // --- AssetMenu for ${nodeName} ---
       window.EVOLV.nodes.${nodeName}.assetMenu =
         window.EVOLV.nodes.${nodeName}.assetMenu || {};
@@ -64,105 +91,462 @@ getClientInitCode(nodeName) {
       ${htmlCode}
       ${dataCode}
       ${eventsCode}
+      ${syncCode}
       ${saveCode}
 
-      // wire it all up when the editor loads
       window.EVOLV.nodes.${nodeName}.assetMenu.initEditor = function(node) {
-      // ------------------  BELOW sequence is important! -------------------------------
+        console.log('Initializing asset properties for ${nodeName}');
-        console.log('Initializing asset properties for ${nodeName}…');
         this.injectHtml();
-        // load the data and wire up events
-        // this will populate the fields and set up the event listeners
         this.wireEvents(node);
-        // this will load the initial data into the fields
+        this.loadData(node).catch((error) =>
-        // this is important to ensure the fields are populated correctly
+          console.error('Asset menu load failed:', error)
-        this.loadData(node);
+        );
       };
     `;
-  
-}
-
-getDataInjectionCode(nodeName) {
-    return `
-      // Asset Data loader for ${nodeName}
-      window.EVOLV.nodes.${nodeName}.assetMenu.loadData = function(node) {
-        const data = window.EVOLV.nodes.${nodeName}.menuData.asset;
-        const elems = {
-          supplier: document.getElementById('node-input-supplier'),
-          category: document.getElementById('node-input-category'),
-          type:     document.getElementById('node-input-assetType'),
-          model:    document.getElementById('node-input-model'),
-          unit:     document.getElementById('node-input-unit')
-        };
-        function populate(el, opts, sel) {
-          const old = el.value;
-          el.innerHTML = '<option value="">Select…</option>';
-          (opts||[]).forEach(o=>{
-            const opt = document.createElement('option');
-            opt.value = o; opt.textContent = o;
-            el.appendChild(opt);
-          });
-          el.value = sel||"";
-          if(el.value!==old) el.dispatchEvent(new Event('change'));
-        }
-        // initial population
-        populate(elems.supplier, Object.keys(data), node.supplier);
-      };
-    `
   }
 
-getEventInjectionCode(nodeName) {
+  getDataInjectionCode(nodeName) {
     return `
-      // Asset Event wiring for ${nodeName}
+      // Asset data loader for ${nodeName}
+      window.EVOLV.nodes.${nodeName}.assetMenu.loadData = async function(node) {
+        const menuAsset = window.EVOLV.nodes.${nodeName}.menuData.asset || {};
+        const categories = menuAsset.categories || {};
+        const defaultCategory = menuAsset.defaultCategory || Object.keys(categories)[0] || null;
+        const apiConfig = menuAsset.apiConfig || {};
+        const elems = {
+          supplier: document.getElementById('node-input-supplier'),
+          type: document.getElementById('node-input-assetType'),
+          model: document.getElementById('node-input-model'),
+          unit: document.getElementById('node-input-unit')
+        };
+
+        function resolveCategoryKey() {
+          if (node.softwareType && categories[node.softwareType]) {
+            return node.softwareType;
+          }
+          if (node.category && categories[node.category]) {
+            return node.category;
+          }
+          return defaultCategory;
+        }
+
+        function normalizeModel(model = {}) {
+          return {
+            id: model.id ?? model.name,
+            name: model.name,
+            units: model.units || []
+          };
+        }
+
+        function normalizeType(type = {}) {
+          return {
+            id: type.id || type.name,
+            name: type.name,
+            models: Array.isArray(type.models)
+              ? type.models.map(normalizeModel)
+              : []
+          };
+        }
+
+        function normalizeSupplier(supplier = {}) {
+          const types = (supplier.categories || []).reduce((acc, category) => {
+            const categoryTypes = Array.isArray(category.types)
+              ? category.types.map(normalizeType)
+              : [];
+            return acc.concat(categoryTypes);
+          }, []);
+          return {
+            id: supplier.id || supplier.name,
+            name: supplier.name,
+            types
+          };
+        }
+
+        function normalizeApiCategory(key, label, suppliers = []) {
+          const normalizedSuppliers = suppliers
+            .map(normalizeSupplier)
+            .filter((supplier) => supplier.types && supplier.types.length);
+          if (!normalizedSuppliers.length) {
+            return null;
+          }
+          return {
+            softwareType: key,
+            label: label || key,
+            suppliers: normalizedSuppliers
+          };
+        }
+
+        async function fetchCategoryFromApi(key) {
+          if (!apiConfig.url || !key) {
+            return null;
+          }
+          const response = await fetch(apiConfig.url, {
+            headers: apiConfig.headers || {}
+          });
+          if (!response.ok) {
+            throw new Error('Asset API request failed: ' + response.status);
+          }
+          const payload = await response.json();
+          if (!payload || payload.success === false || !Array.isArray(payload.data)) {
+            throw new Error(payload?.message || 'Unexpected asset API response');
+          }
+          return normalizeApiCategory(key, node.softwareType || key, payload.data);
+        }
+
+        function populate(selectEl, items = [], selectedValue, mapFn, placeholderText = 'Select...') {
+          const previous = selectEl.value;
+          const mapper = typeof mapFn === 'function'
+            ? mapFn
+            : (value) => ({ value, label: value });
+
+          selectEl.innerHTML = '';
+
+          const placeholder = document.createElement('option');
+          placeholder.value = '';
+          placeholder.textContent = placeholderText;
+          placeholder.disabled = true;
+          placeholder.selected = true;
+          selectEl.appendChild(placeholder);
+
+          items.forEach((item) => {
+            const option = mapper(item);
+            if (!option || typeof option.value === 'undefined') {
+              return;
+            }
+            const opt = document.createElement('option');
+            opt.value = option.value;
+            opt.textContent = option.label;
+            selectEl.appendChild(opt);
+          });
+
+          if (selectedValue) {
+            selectEl.value = selectedValue;
+            if (!selectEl.value) {
+              selectEl.value = '';
+            }
+          } else {
+            selectEl.value = '';
+          }
+          if (selectEl.value !== previous) {
+            selectEl.dispatchEvent(new Event('change'));
+          }
+        }
+
+        const categoryKey = resolveCategoryKey();
+        const resolvedCategoryKey = categoryKey || defaultCategory;
+        let activeCategory = resolvedCategoryKey ? categories[resolvedCategoryKey] : null;
+
+        if (resolvedCategoryKey) {
+          node.category = resolvedCategoryKey;
+        }
+
+        try {
+          const apiCategory = await fetchCategoryFromApi(resolvedCategoryKey);
+          if (apiCategory) {
+            categories[resolvedCategoryKey] = apiCategory;
+            activeCategory = apiCategory;
+          }
+        } catch (error) {
+          console.warn('[AssetMenu] API lookup failed for ${nodeName}, using local asset data', error);
+        }
+
+        const suppliers = activeCategory ? activeCategory.suppliers : [];
+        populate(
+          elems.supplier,
+          suppliers,
+          node.supplier,
+          (supplier) => ({ value: supplier.id || supplier.name, label: supplier.name }),
+          suppliers.length ? 'Select...' : 'No suppliers available'
+        );
+
+        const activeSupplier = suppliers.find(
+          (supplier) => String(supplier.id || supplier.name) === String(node.supplier)
+        );
+        const types = activeSupplier ? activeSupplier.types : [];
+        populate(
+          elems.type,
+          types,
+          node.assetType,
+          (type) => ({ value: type.id || type.name, label: type.name }),
+          activeSupplier ? 'Select...' : 'Awaiting Supplier Selection'
+        );
+
+        const activeType = types.find(
+          (type) => String(type.id || type.name) === String(node.assetType)
+        );
+        const models = activeType ? activeType.models : [];
+        populate(
+          elems.model,
+          models,
+          node.model,
+          (model) => ({ value: model.id || model.name, label: model.name }),
+          activeType ? 'Select...' : 'Awaiting Type Selection'
+        );
+
+        const activeModel = models.find(
+          (model) => String(model.id || model.name) === String(node.model)
+        );
+        if (activeModel) {
+          node.modelMetadata = activeModel;
+          node.modelName = activeModel.name;
+        }
+        populate(
+          elems.unit,
+          activeModel ? activeModel.units || [] : [],
+          node.unit,
+          (unit) => ({ value: unit, label: unit }),
+          activeModel ? 'Select...' : activeType ? 'Awaiting Model Selection' : 'Awaiting Type Selection'
+        );
+        this.setAssetTagNumber(node, node.assetTagNumber || '');
+      };
+    `;
+  }
+
+  getEventInjectionCode(nodeName) {
+    return `
+      // Asset event wiring for ${nodeName}
       window.EVOLV.nodes.${nodeName}.assetMenu.wireEvents = function(node) {
-        const data = window.EVOLV.nodes.${nodeName}.menuData.asset;
+        const menuAsset = window.EVOLV.nodes.${nodeName}.menuData.asset || {};
+        const categories = menuAsset.categories || {};
+        const defaultCategory = menuAsset.defaultCategory || Object.keys(categories)[0] || null;
         const elems = {
           supplier: document.getElementById('node-input-supplier'),
-          category: document.getElementById('node-input-category'),
+          type: document.getElementById('node-input-assetType'),
-          type:     document.getElementById('node-input-assetType'),
+          model: document.getElementById('node-input-model'),
-          model:    document.getElementById('node-input-model'),
+          unit: document.getElementById('node-input-unit')
-          unit:     document.getElementById('node-input-unit')
         };
-        function populate(el, opts, sel) {
+
-          const old = el.value;
+        function populate(selectEl, items = [], selectedValue, mapFn, placeholderText = 'Select...') {
-          el.innerHTML = '<option value="">Select…</option>';
+          const previous = selectEl.value;
-          (opts||[]).forEach(o=>{
+          const mapper = typeof mapFn === 'function'
+            ? mapFn
+            : (value) => ({ value, label: value });
+
+          selectEl.innerHTML = '';
+
+          const placeholder = document.createElement('option');
+          placeholder.value = '';
+          placeholder.textContent = placeholderText;
+          placeholder.disabled = true;
+          placeholder.selected = true;
+          selectEl.appendChild(placeholder);
+
+          items.forEach((item) => {
+            const option = mapper(item);
+            if (!option || typeof option.value === 'undefined') {
+              return;
+            }
             const opt = document.createElement('option');
-            opt.value = o; opt.textContent = o;
+            opt.value = option.value;
-            el.appendChild(opt);
+            opt.textContent = option.label;
+            selectEl.appendChild(opt);
           });
-          el.value = sel||"";
+
-          if(el.value!==old) el.dispatchEvent(new Event('change'));
+          if (selectedValue) {
+            selectEl.value = selectedValue;
+            if (!selectEl.value) {
+              selectEl.value = '';
+            }
+          } else {
+            selectEl.value = '';
+          }
+          if (selectEl.value !== previous) {
+            selectEl.dispatchEvent(new Event('change'));
+          }
         }
-        elems.supplier.addEventListener('change', ()=>{
+
-          populate(elems.category,
+        const resolveCategoryKey = () => {
-            elems.supplier.value? Object.keys(data[elems.supplier.value]||{}) : [],
+          if (node.softwareType && categories[node.softwareType]) {
-            node.category);
+            return node.softwareType;
+          }
+          if (node.category && categories[node.category]) {
+            return node.category;
+          }
+          return defaultCategory;
+        };
+
+        const getActiveCategory = () => {
+          const key = resolveCategoryKey();
+          return key ? categories[key] : null;
+        };
+
+        node.category = resolveCategoryKey();
+
+        elems.supplier.addEventListener('change', () => {
+          const category = getActiveCategory();
+          const supplier = category
+            ? category.suppliers.find(
+                (item) => String(item.id || item.name) === String(elems.supplier.value)
+              )
+            : null;
+          const types = supplier ? supplier.types : [];
+          populate(
+            elems.type,
+            types,
+            node.assetType,
+            (type) => ({ value: type.id || type.name, label: type.name }),
+            supplier ? 'Select...' : 'Awaiting Supplier Selection'
+          );
+          node.modelMetadata = null;
+          populate(elems.model, [], '', undefined, 'Awaiting Type Selection');
+          populate(elems.unit, [], '', undefined, 'Awaiting Type Selection');
         });
-        elems.category.addEventListener('change', ()=>{
+
-          const s=elems.supplier.value, c=elems.category.value;
+        elems.type.addEventListener('change', () => {
-          populate(elems.type,
+          const category = getActiveCategory();
-            (s&&c)? Object.keys(data[s][c]||{}) : [],
+          const supplier = category
-            node.assetType);
+            ? category.suppliers.find(
+                (item) => String(item.id || item.name) === String(elems.supplier.value)
+              )
+            : null;
+          const type = supplier
+            ? supplier.types.find(
+                (item) => String(item.id || item.name) === String(elems.type.value)
+              )
+            : null;
+          const models = type ? type.models : [];
+          populate(
+            elems.model,
+            models,
+            node.model,
+            (model) => ({ value: model.id || model.name, label: model.name }),
+            type ? 'Select...' : 'Awaiting Type Selection'
+          );
+          node.modelMetadata = null;
+          populate(
+            elems.unit,
+            [],
+            '',
+            undefined,
+            type ? 'Awaiting Model Selection' : 'Awaiting Type Selection'
+          );
         });
-        elems.type.addEventListener('change', ()=>{
+
-          const s=elems.supplier.value, c=elems.category.value, t=elems.type.value;
+        elems.model.addEventListener('change', () => {
-          const md = (s&&c&&t)? data[s][c][t]||[] : [];
+          const category = getActiveCategory();
-          populate(elems.model, md.map(m=>m.name), node.model);
+          const supplier = category
-        });
+            ? category.suppliers.find(
-        elems.model.addEventListener('change', ()=>{
+                (item) => String(item.id || item.name) === String(elems.supplier.value)
-          const s=elems.supplier.value, c=elems.category.value, t=elems.type.value, m=elems.model.value;
+              )
-          const md = (s&&c&&t)? data[s][c][t]||[] : [];
+            : null;
-          const entry = md.find(x=>x.name===m);
+          const type = supplier
-          populate(elems.unit, entry? entry.units : [], node.unit);
+            ? supplier.types.find(
+                (item) => String(item.id || item.name) === String(elems.type.value)
+              )
+            : null;
+          const model = type
+            ? type.models.find(
+                (item) => String(item.id || item.name) === String(elems.model.value)
+              )
+            : null;
+          node.modelMetadata = model;
+          node.modelName = model ? model.name : '';
+          populate(
+            elems.unit,
+            model ? model.units || [] : [],
+            node.unit,
+            (unit) => ({ value: unit, label: unit }),
+            model ? 'Select...' : type ? 'Awaiting Model Selection' : 'Awaiting Type Selection'
+          );
         });
       };
-    `
+    `;
+  }
+
+  getSyncInjectionCode(nodeName) {
+    return `
+      // Asset synchronization helpers for ${nodeName}
+      window.EVOLV.nodes.${nodeName}.assetMenu.setAssetTagNumber = function(node, tag) {
+        const normalized = tag ? tag.toString() : '';
+        const input = document.getElementById('node-input-assetTagNumber');
+        const hint = document.getElementById('node-input-assetTagNumber-hint');
+        console.info('[AssetMenu] tag number update', {
+          nodeId: node && node.id ? node.id : null,
+          tag: normalized
+        });
+        if (input) {
+          input.value = normalized;
+        }
+        if (hint) {
+          hint.textContent = normalized ? 'Assigned tag ' + normalized : 'Not registered yet';
+        }
+        if (node) {
+          node.assetTagNumber = normalized;
+        }
+      };
+
+      window.EVOLV.nodes.${nodeName}.assetMenu.buildSyncRequest = function(node) {
+        const tagInput = document.getElementById('node-input-assetTagNumber');
+        const candidateTag = tagInput && tagInput.value ? tagInput.value.trim() : '';
+        const fallbackTag = node && node.assetTagNumber ? node.assetTagNumber : '';
+        const registrationDefaults =
+          (window.EVOLV.nodes.${nodeName}.config && window.EVOLV.nodes.${nodeName}.config.assetRegistration && window.EVOLV.nodes.${nodeName}.config.assetRegistration.default) || {};
+        const displayName = node && node.name ? node.name : node && node.id ? node.id : '${nodeName}';
+        console.info('[AssetMenu] build sync payload', {
+          nodeId: node && node.id ? node.id : null,
+          candidateTag,
+          fallbackTag,
+          status: registrationDefaults.status || 'actief'
+        });
+        return {
+          asset: {
+            tagNumber: candidateTag || fallbackTag,
+            supplier: node && node.supplier ? node.supplier : '',
+            assetType: node && node.assetType ? node.assetType : '',
+            model: node && node.model ? node.model : '',
+            unit: node && node.unit ? node.unit : '',
+            assetName: displayName,
+            assetDescription: displayName,
+            assetStatus: registrationDefaults.status || 'actief',
+            modelMetadata: node && node.modelMetadata ? node.modelMetadata : null
+          },
+          nodeId: node && node.id ? node.id : null,
+          nodeName: node && node.type ? node.type : '${nodeName}'
+        };
+      };
+
+      window.EVOLV.nodes.${nodeName}.assetMenu.syncAsset = function(node) {
+        const payload = this.buildSyncRequest(node);
+        const redSettings = window.RED && window.RED.settings;
+        const adminRoot = redSettings ? redSettings.httpAdminRoot : '';
+        const trimmedRoot = adminRoot && adminRoot.endsWith('/') ? adminRoot.slice(0, -1) : adminRoot || '';
+        const prefix = trimmedRoot || '';
+        const endpoint = (prefix || '') + '/${nodeName}/asset-reg';
+        console.info('[AssetMenu] sync request', {
+          endpoint,
+          nodeId: node && node.id ? node.id : null,
+          tagNumber: payload && payload.asset ? payload.asset.tagNumber : null
+        });
+        fetch(endpoint, {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify(payload)
+        })
+          .then((res) =>
+            res.json().catch((err) => {
+              console.warn('[AssetMenu] asset sync response is not JSON', err);
+              return { success: false, message: err.message || 'Invalid API response' };
+            })
+          )
+          .then((result) => {
+            console.info('[AssetMenu] sync response', result);
+            if (result && result.success) {
+              const newTag = (result.data && result.data.asset_tag_number) || payload.asset.tagNumber || '';
+              this.setAssetTagNumber(node, newTag);
+              if (window.RED && typeof window.RED.notify === 'function') {
+                window.RED.notify('Asset synced: ' + (newTag || 'no tag'), 'info');
+              }
+            } else {
+              console.warn('[AssetMenu] asset sync failed', result && result.message);
+            }
+          })
+          .catch((error) => {
+            console.error('[AssetMenu] asset sync error', error);
+          });
+      };
+    `;
   }
 
-/**
-   * Generate HTML template for asset fields
-   */
   getHtmlTemplate() {
     return `
       <!-- Asset Properties -->
@@ -172,10 +556,6 @@ getEventInjectionCode(nodeName) {
         <label for="node-input-supplier"><i class="fa fa-industry"></i> Supplier</label>
         <select id="node-input-supplier" style="width:70%;"></select>
       </div>
-      <div class="form-row">
-        <label for="node-input-category"><i class="fa fa-sitemap"></i> Category</label>
-        <select id="node-input-category" style="width:70%;"></select>
-      </div>
       <div class="form-row">
         <label for="node-input-assetType"><i class="fa fa-puzzle-piece"></i> Type</label>
         <select id="node-input-assetType" style="width:70%;"></select>
@@ -188,16 +568,20 @@ getEventInjectionCode(nodeName) {
         <label for="node-input-unit"><i class="fa fa-balance-scale"></i> Unit</label>
         <select id="node-input-unit" style="width:70%;"></select>
       </div>
+      <div class="form-row">
+        <label for="node-input-assetTagNumber"><i class="fa fa-hashtag"></i> Asset Tag</label>
+        <input type="text" id="node-input-assetTagNumber" readonly style="width:70%;" />
+        <div class="form-tips" id="node-input-assetTagNumber-hint">Not registered yet</div>
+      </div>
       <hr />
     `;
   }
 
-  /**
-   * Get client-side HTML injection code
-   */
   getHtmlInjectionCode(nodeName) {
-    const htmlTemplate = this.getHtmlTemplate().replace(/`/g, '\\`').replace(/\$/g, '\\$');
+    const htmlTemplate = this.getHtmlTemplate()
-    
+      .replace(/`/g, '\\`')
+      .replace(/\$/g, '\\$');
+
     return `
       // Asset HTML injection for ${nodeName}
       window.EVOLV.nodes.${nodeName}.assetMenu.injectHtml = function() {
@@ -210,33 +594,60 @@ getEventInjectionCode(nodeName) {
     `;
   }
 
-  /** 
-   * Returns the JS that injects the saveEditor function 
-   */
   getSaveInjectionCode(nodeName) {
     return `
-      // Asset Save injection for ${nodeName}
+      // Asset save handler for ${nodeName}
       window.EVOLV.nodes.${nodeName}.assetMenu.saveEditor = function(node) {
-        console.log('Saving asset properties for ${nodeName}…');
+        console.log('Saving asset properties for ${nodeName}');
-        const fields = ['supplier','category','assetType','model','unit'];
+        const menuAsset = window.EVOLV.nodes.${nodeName}.menuData.asset || {};
-        const errors = [];
+        const categories = menuAsset.categories || {};
-        fields.forEach(f => {
+        const defaultCategory = menuAsset.defaultCategory || Object.keys(categories)[0] || null;
-          const el = document.getElementById(\`node-input-\${f}\`);
+        const resolveCategoryKey = () => {
-          node[f] = el ? el.value : '';
+          if (node.softwareType && categories[node.softwareType]) {
-        });
+            return node.softwareType;
-        if (node.assetType && !node.unit) errors.push('Unit must be set when type is specified.');
+          }
-        if (!node.unit)             errors.push('Unit is required.');
+          if (node.category && categories[node.category]) {
-        errors.forEach(e=>RED.notify(e,'error'));
+            return node.category;
-        
+          }
-        // --- DEBUG: show exactly what was saved ---
+          return defaultCategory || '';
-        const saved = fields.reduce((o,f) => { o[f] = node[f]; return o; }, {});
+        };
-        console.log('→ assetMenu.saveEditor result:', saved);
 
-        return errors.length===0;
+        node.category = resolveCategoryKey();
+
+        const fields = ['supplier', 'assetType', 'model', 'unit', 'assetTagNumber'];
+        const errors = [];
+
+        fields.forEach((field) => {
+          const el = document.getElementById(\`node-input-\${field}\`);
+          node[field] = el ? el.value : '';
+        });
+
+        if (node.assetType && !node.unit) {
+          errors.push('Unit must be set when a type is specified.');
+        }
+        if (!node.unit) {
+          errors.push('Unit is required.');
+        }
+
+        errors.forEach((msg) => RED.notify(msg, 'error'));
+
+        const saved = fields.reduce((acc, field) => {
+          acc[field] = node[field];
+          return acc;
+        }, {});
+        if (node.modelMetadata && typeof node.modelMetadata.id !== 'undefined') {
+          saved.modelId = node.modelMetadata.id;
+        }
+        console.log('[AssetMenu] save result:', saved);
+
+        if (errors.length === 0 && this.syncAsset) {
+          this.syncAsset(node);
+        }
+
+        return errors.length === 0;
       };
     `;
   }
-
 }
 
 module.exports = AssetMenu;

src/menu/asset_DEPRECATED.js

@@ -0,0 +1,243 @@
+// asset.js
+const fs   = require('fs');
+const path = require('path');
+
+
+class AssetMenu {
+  /** Define path where to find data of assets in constructor for now */
+  constructor(relPath = '../../datasets/assetData') {
+    this.baseDir = path.resolve(__dirname, relPath);
+    this.assetData = this._loadJSON('assetData');
+  }
+
+  _loadJSON(...segments) {
+    const filePath = path.resolve(this.baseDir, ...segments) + '.json';
+    try {
+      return JSON.parse(fs.readFileSync(filePath, 'utf8'));
+    } catch (err) {
+      throw new Error(`Failed to load ${filePath}: ${err.message}`);
+    }
+  }
+  
+  /**
+   * ADD THIS METHOD
+   * Compiles all menu data from the file system into a single nested object.
+   * This is run once on the server to pre-load everything.
+   * @returns {object} A comprehensive object with all menu options.
+   */
+  getAllMenuData() {
+    // load the raw JSON once
+    const data = this._loadJSON('assetData');
+    const allData = {};
+
+    data.suppliers.forEach(sup => {
+      allData[sup.name] = {};
+      sup.categories.forEach(cat => {
+        allData[sup.name][cat.name] = {};
+        cat.types.forEach(type => {
+          // here: store the full array of model objects, not just names
+          allData[sup.name][cat.name][type.name] = type.models;
+        });
+      });
+    });
+
+    return allData;
+  }
+
+  /**
+   * Convert the static initEditor function to a string that can be served to the client
+   * @param {string} nodeName - The name of the node type
+   * @returns {string} JavaScript code as a string
+   */
+getClientInitCode(nodeName) {
+  // step 1: get the two helper strings
+  const htmlCode = this.getHtmlInjectionCode(nodeName);
+  const dataCode   = this.getDataInjectionCode(nodeName);
+  const eventsCode = this.getEventInjectionCode(nodeName);
+  const saveCode = this.getSaveInjectionCode(nodeName);
+
+
+   return `
+      // --- AssetMenu for ${nodeName} ---
+      window.EVOLV.nodes.${nodeName}.assetMenu =
+        window.EVOLV.nodes.${nodeName}.assetMenu || {};
+
+      ${htmlCode}
+      ${dataCode}
+      ${eventsCode}
+      ${saveCode}
+
+      // wire it all up when the editor loads
+      window.EVOLV.nodes.${nodeName}.assetMenu.initEditor = function(node) {
+      // ------------------  BELOW sequence is important! -------------------------------
+        console.log('Initializing asset properties for ${nodeName}…');
+        this.injectHtml();
+        // load the data and wire up events
+        // this will populate the fields and set up the event listeners
+        this.wireEvents(node);
+        // this will load the initial data into the fields
+        // this is important to ensure the fields are populated correctly
+        this.loadData(node);
+      };
+    `;
+  
+}
+
+getDataInjectionCode(nodeName) {
+    return `
+      // Asset Data loader for ${nodeName}
+      window.EVOLV.nodes.${nodeName}.assetMenu.loadData = function(node) {
+        const data = window.EVOLV.nodes.${nodeName}.menuData.asset;
+        const elems = {
+          supplier: document.getElementById('node-input-supplier'),
+          category: document.getElementById('node-input-category'),
+          type:     document.getElementById('node-input-assetType'),
+          model:    document.getElementById('node-input-model'),
+          unit:     document.getElementById('node-input-unit')
+        };
+        function populate(el, opts, sel) {
+          const old = el.value;
+          el.innerHTML = '<option value="">Select…</option>';
+          (opts||[]).forEach(o=>{
+            const opt = document.createElement('option');
+            opt.value = o; opt.textContent = o;
+            el.appendChild(opt);
+          });
+          el.value = sel||"";
+          if(el.value!==old) el.dispatchEvent(new Event('change'));
+        }
+        // initial population
+        populate(elems.supplier, Object.keys(data), node.supplier);
+      };
+    `
+  }
+
+getEventInjectionCode(nodeName) {
+    return `
+      // Asset Event wiring for ${nodeName}
+      window.EVOLV.nodes.${nodeName}.assetMenu.wireEvents = function(node) {
+        const data = window.EVOLV.nodes.${nodeName}.menuData.asset;
+        const elems = {
+          supplier: document.getElementById('node-input-supplier'),
+          category: document.getElementById('node-input-category'),
+          type:     document.getElementById('node-input-assetType'),
+          model:    document.getElementById('node-input-model'),
+          unit:     document.getElementById('node-input-unit')
+        };
+        function populate(el, opts, sel) {
+          const old = el.value;
+          el.innerHTML = '<option value="">Select…</option>';
+          (opts||[]).forEach(o=>{
+            const opt = document.createElement('option');
+            opt.value = o; opt.textContent = o;
+            el.appendChild(opt);
+          });
+          el.value = sel||"";
+          if(el.value!==old) el.dispatchEvent(new Event('change'));
+        }
+        elems.supplier.addEventListener('change', ()=>{
+          populate(elems.category,
+            elems.supplier.value? Object.keys(data[elems.supplier.value]||{}) : [],
+            node.category);
+        });
+        elems.category.addEventListener('change', ()=>{
+          const s=elems.supplier.value, c=elems.category.value;
+          populate(elems.type,
+            (s&&c)? Object.keys(data[s][c]||{}) : [],
+            node.assetType);
+        });
+        elems.type.addEventListener('change', ()=>{
+          const s=elems.supplier.value, c=elems.category.value, t=elems.type.value;
+          const md = (s&&c&&t)? data[s][c][t]||[] : [];
+          populate(elems.model, md.map(m=>m.name), node.model);
+        });
+        elems.model.addEventListener('change', ()=>{
+          const s=elems.supplier.value, c=elems.category.value, t=elems.type.value, m=elems.model.value;
+          const md = (s&&c&&t)? data[s][c][t]||[] : [];
+          const entry = md.find(x=>x.name===m);
+          populate(elems.unit, entry? entry.units : [], node.unit);
+        });
+      };
+    `
+  }
+
+/**
+   * Generate HTML template for asset fields
+   */
+  getHtmlTemplate() {
+    return `
+      <!-- Asset Properties -->
+      <hr />
+      <h3>Asset selection</h3>
+      <div class="form-row">
+        <label for="node-input-supplier"><i class="fa fa-industry"></i> Supplier</label>
+        <select id="node-input-supplier" style="width:70%;"></select>
+      </div>
+      <div class="form-row">
+        <label for="node-input-category"><i class="fa fa-sitemap"></i> Category</label>
+        <select id="node-input-category" style="width:70%;"></select>
+      </div>
+      <div class="form-row">
+        <label for="node-input-assetType"><i class="fa fa-puzzle-piece"></i> Type</label>
+        <select id="node-input-assetType" style="width:70%;"></select>
+      </div>
+      <div class="form-row">
+        <label for="node-input-model"><i class="fa fa-wrench"></i> Model</label>
+        <select id="node-input-model" style="width:70%;"></select>
+      </div>
+      <div class="form-row">
+        <label for="node-input-unit"><i class="fa fa-balance-scale"></i> Unit</label>
+        <select id="node-input-unit" style="width:70%;"></select>
+      </div>
+      <hr />
+    `;
+  }
+
+  /**
+   * Get client-side HTML injection code
+   */
+  getHtmlInjectionCode(nodeName) {
+    const htmlTemplate = this.getHtmlTemplate().replace(/`/g, '\\`').replace(/\$/g, '\\$');
+    
+    return `
+      // Asset HTML injection for ${nodeName}
+      window.EVOLV.nodes.${nodeName}.assetMenu.injectHtml = function() {
+        const placeholder = document.getElementById('asset-fields-placeholder');
+        if (placeholder && !placeholder.hasChildNodes()) {
+          placeholder.innerHTML = \`${htmlTemplate}\`;
+          console.log('Asset HTML injected successfully');
+        }
+      };
+    `;
+  }
+
+  /** 
+   * Returns the JS that injects the saveEditor function 
+   */
+  getSaveInjectionCode(nodeName) {
+    return `
+      // Asset Save injection for ${nodeName}
+      window.EVOLV.nodes.${nodeName}.assetMenu.saveEditor = function(node) {
+        console.log('Saving asset properties for ${nodeName}…');
+        const fields = ['supplier','category','assetType','model','unit'];
+        const errors = [];
+        fields.forEach(f => {
+          const el = document.getElementById(\`node-input-\${f}\`);
+          node[f] = el ? el.value : '';
+        });
+        if (node.assetType && !node.unit) errors.push('Unit must be set when type is specified.');
+        if (!node.unit)             errors.push('Unit is required.');
+        errors.forEach(e=>RED.notify(e,'error'));
+        
+        // --- DEBUG: show exactly what was saved ---
+        const saved = fields.reduce((o,f) => { o[f] = node[f]; return o; }, {});
+        console.log('→ assetMenu.saveEditor result:', saved);
+
+        return errors.length===0;
+      };
+    `;
+  }
+
+}
+
+module.exports = AssetMenu;

src/menu/index.js

@@ -1,17 +1,23 @@
 const AssetMenu = require('./asset.js');
-const { TagcodeApp, DynamicAssetMenu } = require('./tagcodeApp.js');
+// TagcodeApp and DynamicAssetMenu available via ./tagcodeApp.js
 const LoggerMenu = require('./logger.js');
 const PhysicalPositionMenu = require('./physicalPosition.js');
+const AquonSamplesMenu = require('./aquonSamples.js');
+const ConfigManager = require('../configs');
 
 class MenuManager {
 
     constructor() {
         this.registeredMenus = new Map();
+        this.configManager = new ConfigManager('../configs');
         // Register factory functions
-        this.registerMenu('asset', () => new AssetMenu()); // static menu to be replaced by dynamic one but later
+        this.registerMenu('asset', (nodeName) => new AssetMenu({
+            softwareType: this._getSoftwareType(nodeName)
+        })); // static menu to be replaced by dynamic one but later
         //this.registerMenu('asset', (nodeName) => new DynamicAssetMenu(nodeName, new TagcodeApp()));
         this.registerMenu('logger', () => new LoggerMenu());
         this.registerMenu('position', () => new PhysicalPositionMenu());
+        this.registerMenu('aquon', () => new AquonSamplesMenu());
     }
 
     /**
@@ -23,6 +29,34 @@ class MenuManager {
         this.registeredMenus.set(menuType, menuFactory);
     }
 
+    _getSoftwareType(nodeName) {
+        if (!nodeName) {
+            return null;
+        }
+
+        try {
+            const config = this.configManager.getConfig(nodeName);
+            const softwareType = config?.functionality?.softwareType;
+
+            if (typeof softwareType === 'string' && softwareType.trim()) {
+                return softwareType;
+            }
+            if (
+                softwareType &&
+                typeof softwareType === 'object' &&
+                typeof softwareType.default === 'string' &&
+                softwareType.default.trim()
+            ) {
+                return softwareType.default;
+            }
+
+            return nodeName;
+        } catch (error) {
+            console.warn(`Unable to determine softwareType for ${nodeName}: ${error.message}`);
+            return nodeName;
+        }
+    }
+
     /**
      * Create a complete endpoint script with data and initialization functions
      * @param {string} nodeName - The name of the node type
@@ -54,7 +88,7 @@ class MenuManager {
                 try {
                     const handler = instantiatedMenus.get(menuType);
                     if (handler && typeof handler.getAllMenuData === 'function') {
-                        menuData[menuType] = handler.getAllMenuData();
+                        menuData[menuType] = handler.getAllMenuData(nodeName);
                     } else {
                         // Provide default empty data if method doesn't exist
                         menuData[menuType] = {};
@@ -172,4 +206,4 @@ class MenuManager {
     }
 }
 
-module.exports = MenuManager;
+module.exports = MenuManager;

src/menu/physicalPosition.js

@@ -6,9 +6,9 @@ class PhysicalPositionMenu {
     return {
       positionGroups: [
         { group: 'Positional', options: [
-            { value: 'upstream',     label: '← Upstream', icon: '←'},
+            { value: 'upstream',     label: '→ Upstream', icon: '→'}, //flow is then typically left to right
             { value: 'atEquipment',  label: '⊥ in place' , icon: '⊥' },
-            { value: 'downstream',   label: '→ Downstream' , icon: '→' }
+            { value: 'downstream',   label: '← Downstream' , icon: '←' }
           ]
         }
       ],

src/nrmse/errorMetrics.js

@@ -1,125 +1,126 @@
-//load local dependencies
 const EventEmitter = require('events');
-
-//load all config modules
 const defaultConfig = require('./nrmseConfig.json');
 const ConfigUtils = require('../helper/configUtils');
 
 class ErrorMetrics {
   constructor(config = {}, logger) {
-
+    this.emitter = new EventEmitter();
-    this.emitter = new EventEmitter();  // Own EventEmitter
     this.configUtils = new ConfigUtils(defaultConfig);
     this.config = this.configUtils.initConfig(config);
-  
-    // Init after config is set
     this.logger = logger;
 
-    // For long-term NRMSD accumulation
+    this.metricState = new Map();
+    this.legacyMetricId = 'default';
+
+    // Backward-compatible fields retained for existing callers/tests.
     this.cumNRMSD = 0;
     this.cumCount = 0;
   }
 
-  //INCLUDE timestamps in the next update OLIFANT
+  registerMetric(metricId, profile = {}) {
-  meanSquaredError(predicted, measured) {
+    const key = String(metricId || this.legacyMetricId);
-    if (predicted.length !== measured.length) {
+    const state = this._ensureMetricState(key);
-      this.logger.error("Comparing MSE Arrays must have the same length.");
+    state.profile = { ...state.profile, ...profile };
+    return state.profile;
+  }
+
+  resetMetric(metricId = this.legacyMetricId) {
+    this.metricState.delete(String(metricId));
+    if (metricId === this.legacyMetricId) {
+      this.cumNRMSD = 0;
+      this.cumCount = 0;
+    }
+  }
+
+  getMetricState(metricId = this.legacyMetricId) {
+    return this.metricState.get(String(metricId)) || null;
+  }
+
+  meanSquaredError(predicted, measured, options = {}) {
+    const { p, m } = this._validateSeries(predicted, measured, options);
+    let sumSqError = 0;
+    for (let i = 0; i < p.length; i += 1) {
+      const err = p[i] - m[i];
+      sumSqError += err * err;
+    }
+    return sumSqError / p.length;
+  }
+
+  rootMeanSquaredError(predicted, measured, options = {}) {
+    return Math.sqrt(this.meanSquaredError(predicted, measured, options));
+  }
+
+  normalizedRootMeanSquaredError(predicted, measured, processMin, processMax, options = {}) {
+    const range = Number(processMax) - Number(processMin);
+    if (!Number.isFinite(range) || range <= 0) {
+      this._failOrLog(
+        `Invalid process range: processMax (${processMax}) must be greater than processMin (${processMin}).`,
+        options
+      );
+      return NaN;
+    }
+    const rmse = this.rootMeanSquaredError(predicted, measured, options);
+    return rmse / range;
+  }
+
+  normalizeUsingRealtime(predicted, measured, options = {}) {
+    const { p, m } = this._validateSeries(predicted, measured, options);
+    const realtimeMin = Math.min(Math.min(...p), Math.min(...m));
+    const realtimeMax = Math.max(Math.max(...p), Math.max(...m));
+    const range = realtimeMax - realtimeMin;
+    if (!Number.isFinite(range) || range <= 0) {
+      throw new Error('Invalid process range: processMax must be greater than processMin.');
+    }
+    const rmse = this.rootMeanSquaredError(p, m, options);
+    return rmse / range;
+  }
+
+  longTermNRMSD(input, metricId = this.legacyMetricId, options = {}) {
+    const metricKey = String(metricId || this.legacyMetricId);
+    const state = this._ensureMetricState(metricKey);
+    const profile = this._resolveProfile(metricKey, options);
+    const value = Number(input);
+    if (!Number.isFinite(value)) {
+      this._failOrLog(`longTermNRMSD input must be finite. Received: ${input}`, options);
       return 0;
     }
 
-
+    // Keep backward compatibility if callers manipulate cumCount/cumNRMSD directly.
-    let sumSqError = 0;
+    if (metricKey === this.legacyMetricId && (state.sampleCount !== this.cumCount || state.longTermEwma !== this.cumNRMSD)) {
-    for (let i = 0; i < predicted.length; i++) {
+      state.sampleCount = Number(this.cumCount) || 0;
-      const err = predicted[i] - measured[i];
+      state.longTermEwma = Number(this.cumNRMSD) || 0;
-      sumSqError += err * err;
-    }
-    return sumSqError / predicted.length;
-  }
-
-  rootMeanSquaredError(predicted, measured) {
-    return Math.sqrt(this.meanSquaredError(predicted, measured));
-  }
-
-  normalizedRootMeanSquaredError(predicted, measured, processMin, processMax) {
-    const range = processMax - processMin;
-    if (range <= 0) {
-      this.logger.error("Invalid process range: processMax must be greater than processMin.");
-    }
-    const rmse = this.rootMeanSquaredError(predicted, measured);
-    return rmse / range;
-  }
-
-  longTermNRMSD(input) {
-
-    const storedNRMSD = this.cumNRMSD;
-    const storedCount = this.cumCount;
-    const newCount = storedCount + 1;
-    
-    // Update cumulative values
-    this.cumCount = newCount;
-    
-    // Calculate new running average
-    if (storedCount === 0) {
-      this.cumNRMSD = input; // First value
-    } else {
-      // Running average formula: newAvg = oldAvg + (newValue - oldAvg) / newCount
-      this.cumNRMSD = storedNRMSD + (input - storedNRMSD) / newCount;
     }
 
-    if(newCount >= 100) {
+    state.sampleCount += 1;
-      // Return the current NRMSD value, not just the contribution from this sample
+    const alpha = profile.ewmaAlpha;
-      return this.cumNRMSD;
+    state.longTermEwma = state.sampleCount === 1 ? value : (alpha * value) + ((1 - alpha) * state.longTermEwma);
-    }
-    return 0;
-  }
 
-  normalizeUsingRealtime(predicted, measured) {
+    if (metricKey === this.legacyMetricId) {
-    const realtimeMin = Math.min(Math.min(...predicted), Math.min(...measured));
+      this.cumCount = state.sampleCount;
-    const realtimeMax = Math.max(Math.max(...predicted), Math.max(...measured));
+      this.cumNRMSD = state.longTermEwma;
-    const range = realtimeMax - realtimeMin;
-    if (range <= 0) {
-      throw new Error("Invalid process range: processMax must be greater than processMin.");
     }
-    const rmse = this.rootMeanSquaredError(predicted, measured);
+
-    return rmse / range;
+    if (state.sampleCount < profile.minSamplesForLongTerm) {
+      return 0;
+    }
+    return state.longTermEwma;
   }
 
   detectImmediateDrift(nrmse) {
-    let ImmDrift = {};
+    const thresholds = this.config.thresholds;
-    this.logger.debug(`checking immediate drift with thresholds : ${this.config.thresholds.NRMSE_HIGH} ${this.config.thresholds.NRMSE_MEDIUM} ${this.config.thresholds.NRMSE_LOW}`);
+    if (nrmse > thresholds.NRMSE_HIGH) return { level: 3, feedback: 'High immediate drift detected' };
-    switch (true) {
+    if (nrmse > thresholds.NRMSE_MEDIUM) return { level: 2, feedback: 'Medium immediate drift detected' };
-      case( nrmse > this.config.thresholds.NRMSE_HIGH ) :
+    if (nrmse > thresholds.NRMSE_LOW) return { level: 1, feedback: 'Low immediate drift detected' };
-        ImmDrift = {level : 3 , feedback : "High immediate drift detected"};
+    return { level: 0, feedback: 'No drift detected' };
-        break;
-      case( nrmse > this.config.thresholds.NRMSE_MEDIUM ) :
-        ImmDrift = {level : 2 , feedback : "Medium immediate drift detected"};
-        break;
-      case(nrmse > this.config.thresholds.NRMSE_LOW ):
-        ImmDrift = {level : 1 , feedback : "Low immediate drift detected"};
-        break;
-      default:
-        ImmDrift = {level : 0 , feedback : "No drift detected"};
-    }
-    return ImmDrift;
   }
 
   detectLongTermDrift(longTermNRMSD) {
-    let LongTermDrift = {};
+    const thresholds = this.config.thresholds;
-    this.logger.debug(`checking longterm drift with thresholds : ${this.config.thresholds.LONG_TERM_HIGH} ${this.config.thresholds.LONG_TERM_MEDIUM} ${this.config.thresholds.LONG_TERM_LOW}`);
+    const absValue = Math.abs(longTermNRMSD);
-    switch (true) {
+    if (absValue > thresholds.LONG_TERM_HIGH) return { level: 3, feedback: 'High long-term drift detected' };
-      case(Math.abs(longTermNRMSD) > this.config.thresholds.LONG_TERM_HIGH) :
+    if (absValue > thresholds.LONG_TERM_MEDIUM) return { level: 2, feedback: 'Medium long-term drift detected' };
-        LongTermDrift = {level : 3 , feedback : "High long-term drift detected"};
+    if (absValue > thresholds.LONG_TERM_LOW) return { level: 1, feedback: 'Low long-term drift detected' };
-        break;
+    return { level: 0, feedback: 'No drift detected' };
-      case (Math.abs(longTermNRMSD) > this.config.thresholds.LONG_TERM_MEDIUM) :
-        LongTermDrift = {level : 2 , feedback : "Medium long-term drift detected"};
-        break;
-      case ( Math.abs(longTermNRMSD) > this.config.thresholds.LONG_TERM_LOW ) :
-        LongTermDrift = {level : 1 , feedback : "Low long-term drift detected"};
-        break;
-      default:
-        LongTermDrift = {level : 0 , feedback : "No drift detected"}; 
-    }
-    return LongTermDrift;
   }
 
   detectDrift(nrmse, longTermNRMSD) {
@@ -128,27 +129,272 @@ class ErrorMetrics {
     return { ImmDrift, LongTermDrift };
   }
 
-  // asses the drift
+  assessDrift(predicted, measured, processMin, processMax, options = {}) {
-  assessDrift(predicted, measured, processMin, processMax) {
+    const metricKey = String(options.metricId || this.legacyMetricId);
-    // Compute NRMSE and check for immediate drift
+    const profile = this._resolveProfile(metricKey, options);
-    const nrmse = this.normalizedRootMeanSquaredError(predicted, measured, processMin, processMax);
+    const strict = this._resolveStrict(options, profile);
-    this.logger.debug(`NRMSE: ${nrmse}`);
+
-    // cmopute long-term NRMSD and add result to cumalitve NRMSD
+    const aligned = this._alignSeriesByTimestamp(predicted, measured, options, profile);
-    const longTermNRMSD = this.longTermNRMSD(nrmse);
+    if (!aligned.valid) {
-    // return the drift
+      if (strict) {
-    // Return the drift assessment object
+        throw new Error(aligned.reason);
+      }
+      return this._invalidAssessment(metricKey, aligned.reason);
+    }
+
+    const nrmse = this.normalizedRootMeanSquaredError(
+      aligned.predicted,
+      aligned.measured,
+      processMin,
+      processMax,
+      { ...options, strictValidation: strict }
+    );
+    if (!Number.isFinite(nrmse)) {
+      if (strict) {
+        throw new Error('NRMSE calculation returned a non-finite value.');
+      }
+      return this._invalidAssessment(metricKey, 'non_finite_nrmse');
+    }
+
+    const longTermNRMSD = this.longTermNRMSD(nrmse, metricKey, { ...options, strictValidation: strict });
     const driftAssessment = this.detectDrift(nrmse, longTermNRMSD);
-    return {
+    const state = this._ensureMetricState(metricKey);
+    state.lastResult = {
       nrmse,
       longTermNRMSD,
       immediateLevel: driftAssessment.ImmDrift.level,
       immediateFeedback: driftAssessment.ImmDrift.feedback,
       longTermLevel: driftAssessment.LongTermDrift.level,
-      longTermFeedback: driftAssessment.LongTermDrift.feedback
+      longTermFeedback: driftAssessment.LongTermDrift.feedback,
+      valid: true,
+      metricId: metricKey,
+      sampleCount: state.sampleCount,
+      longTermReady: state.sampleCount >= profile.minSamplesForLongTerm,
+      flags: [],
+    };
+    return state.lastResult;
+  }
+
+  assessPoint(metricId, predictedValue, measuredValue, options = {}) {
+    const metricKey = String(metricId || this.legacyMetricId);
+    const profile = this._resolveProfile(metricKey, options);
+    const state = this._ensureMetricState(metricKey);
+    const strict = this._resolveStrict(options, profile);
+
+    const p = Number(predictedValue);
+    const m = Number(measuredValue);
+    if (!Number.isFinite(p) || !Number.isFinite(m)) {
+      const reason = `assessPoint requires finite numbers. predicted=${predictedValue}, measured=${measuredValue}`;
+      if (strict) {
+        throw new Error(reason);
+      }
+      return this._invalidAssessment(metricKey, reason);
+    }
+
+    const predictedTimestamp = Number(options.predictedTimestamp ?? options.timestamp ?? Date.now());
+    const measuredTimestamp = Number(options.measuredTimestamp ?? options.timestamp ?? Date.now());
+    const delta = Math.abs(predictedTimestamp - measuredTimestamp);
+    if (delta > profile.alignmentToleranceMs) {
+      const reason = `Sample timestamp delta (${delta} ms) exceeds tolerance (${profile.alignmentToleranceMs} ms)`;
+      if (strict) {
+        throw new Error(reason);
+      }
+      return this._invalidAssessment(metricKey, reason);
+    }
+
+    state.predicted.push(p);
+    state.measured.push(m);
+    state.predictedTimestamps.push(predictedTimestamp);
+    state.measuredTimestamps.push(measuredTimestamp);
+
+    while (state.predicted.length > profile.windowSize) state.predicted.shift();
+    while (state.measured.length > profile.windowSize) state.measured.shift();
+    while (state.predictedTimestamps.length > profile.windowSize) state.predictedTimestamps.shift();
+    while (state.measuredTimestamps.length > profile.windowSize) state.measuredTimestamps.shift();
+
+    if (state.predicted.length < 2 || state.measured.length < 2) {
+      return this._invalidAssessment(metricKey, 'insufficient_samples');
+    }
+
+    let processMin = Number(options.processMin);
+    let processMax = Number(options.processMax);
+    if (!Number.isFinite(processMin) || !Number.isFinite(processMax) || processMax <= processMin) {
+      processMin = Math.min(...state.predicted, ...state.measured);
+      processMax = Math.max(...state.predicted, ...state.measured);
+      if (!Number.isFinite(processMin) || !Number.isFinite(processMax) || processMax <= processMin) {
+        processMin = 0;
+        processMax = 1;
+      }
+    }
+
+    return this.assessDrift(state.predicted, state.measured, processMin, processMax, {
+      ...options,
+      metricId: metricKey,
+      strictValidation: strict,
+      predictedTimestamps: state.predictedTimestamps,
+      measuredTimestamps: state.measuredTimestamps,
+    });
+  }
+
+  _ensureMetricState(metricId) {
+    const key = String(metricId || this.legacyMetricId);
+    if (!this.metricState.has(key)) {
+      this.metricState.set(key, {
+        predicted: [],
+        measured: [],
+        predictedTimestamps: [],
+        measuredTimestamps: [],
+        sampleCount: 0,
+        longTermEwma: 0,
+        profile: {},
+        lastResult: null,
+      });
+    }
+    return this.metricState.get(key);
+  }
+
+  _resolveProfile(metricId, options = {}) {
+    const state = this._ensureMetricState(metricId);
+    const base = this.config.processing || {};
+    return {
+      windowSize: Number(options.windowSize ?? state.profile.windowSize ?? base.windowSize ?? 50),
+      minSamplesForLongTerm: Number(options.minSamplesForLongTerm ?? state.profile.minSamplesForLongTerm ?? base.minSamplesForLongTerm ?? 100),
+      ewmaAlpha: Number(options.ewmaAlpha ?? state.profile.ewmaAlpha ?? base.ewmaAlpha ?? 0.1),
+      alignmentToleranceMs: Number(options.alignmentToleranceMs ?? state.profile.alignmentToleranceMs ?? base.alignmentToleranceMs ?? 2000),
+      strictValidation: Boolean(options.strictValidation ?? state.profile.strictValidation ?? base.strictValidation ?? true),
     };
   }
 
+  _resolveStrict(options = {}, profile = null) {
+    if (Object.prototype.hasOwnProperty.call(options, 'strictValidation')) {
+      return Boolean(options.strictValidation);
+    }
+    if (profile && Object.prototype.hasOwnProperty.call(profile, 'strictValidation')) {
+      return Boolean(profile.strictValidation);
+    }
+    return Boolean(this.config.processing?.strictValidation ?? true);
+  }
 
+  _validateSeries(predicted, measured, options = {}) {
+    if (!Array.isArray(predicted) || !Array.isArray(measured)) {
+      this._failOrLog('predicted and measured must be arrays.', options);
+      return { p: [], m: [] };
+    }
+    if (!predicted.length || !measured.length) {
+      this._failOrLog('predicted and measured arrays must not be empty.', options);
+      return { p: [], m: [] };
+    }
+    if (predicted.length !== measured.length) {
+      this._failOrLog('predicted and measured arrays must have the same length.', options);
+      return { p: [], m: [] };
+    }
+
+    const p = predicted.map(Number);
+    const m = measured.map(Number);
+    const hasBad = p.some((v) => !Number.isFinite(v)) || m.some((v) => !Number.isFinite(v));
+    if (hasBad) {
+      this._failOrLog('predicted and measured arrays must contain finite numeric values.', options);
+      return { p: [], m: [] };
+    }
+    return { p, m };
+  }
+
+  _alignSeriesByTimestamp(predicted, measured, options = {}, profile = null) {
+    const strict = this._resolveStrict(options, profile);
+    const tolerance = Number(options.alignmentToleranceMs ?? profile?.alignmentToleranceMs ?? 2000);
+    const predictedTimestamps = Array.isArray(options.predictedTimestamps) ? options.predictedTimestamps.map(Number) : null;
+    const measuredTimestamps = Array.isArray(options.measuredTimestamps) ? options.measuredTimestamps.map(Number) : null;
+
+    if (!predictedTimestamps || !measuredTimestamps) {
+      if (!Array.isArray(predicted) || !Array.isArray(measured)) {
+        return { valid: false, reason: 'predicted and measured must be arrays.' };
+      }
+      if (predicted.length !== measured.length) {
+        const reason = `Series length mismatch without timestamps: predicted=${predicted.length}, measured=${measured.length}`;
+        if (strict) return { valid: false, reason };
+        const n = Math.min(predicted.length, measured.length);
+        if (n < 2) return { valid: false, reason };
+        return {
+          valid: true,
+          predicted: predicted.slice(-n).map(Number),
+          measured: measured.slice(-n).map(Number),
+          flags: ['length_mismatch_realigned'],
+        };
+      }
+      try {
+        const { p, m } = this._validateSeries(predicted, measured, { ...options, strictValidation: true });
+        return { valid: true, predicted: p, measured: m, flags: [] };
+      } catch (error) {
+        return { valid: false, reason: error.message };
+      }
+    }
+
+    if (!Array.isArray(predicted) || !Array.isArray(measured)) {
+      return { valid: false, reason: 'predicted and measured must be arrays.' };
+    }
+    if (predicted.length !== predictedTimestamps.length || measured.length !== measuredTimestamps.length) {
+      return { valid: false, reason: 'timestamp arrays must match value-array lengths.' };
+    }
+
+    const predictedSamples = predicted
+      .map((v, i) => ({ value: Number(v), ts: predictedTimestamps[i] }))
+      .filter((s) => Number.isFinite(s.value) && Number.isFinite(s.ts))
+      .sort((a, b) => a.ts - b.ts);
+    const measuredSamples = measured
+      .map((v, i) => ({ value: Number(v), ts: measuredTimestamps[i] }))
+      .filter((s) => Number.isFinite(s.value) && Number.isFinite(s.ts))
+      .sort((a, b) => a.ts - b.ts);
+
+    const alignedPredicted = [];
+    const alignedMeasured = [];
+    let i = 0;
+    let j = 0;
+    while (i < predictedSamples.length && j < measuredSamples.length) {
+      const p = predictedSamples[i];
+      const m = measuredSamples[j];
+      const delta = p.ts - m.ts;
+      if (Math.abs(delta) <= tolerance) {
+        alignedPredicted.push(p.value);
+        alignedMeasured.push(m.value);
+        i += 1;
+        j += 1;
+      } else if (delta < 0) {
+        i += 1;
+      } else {
+        j += 1;
+      }
+    }
+
+    if (alignedPredicted.length < 2 || alignedMeasured.length < 2) {
+      return { valid: false, reason: 'insufficient aligned samples after timestamp matching.' };
+    }
+
+    return { valid: true, predicted: alignedPredicted, measured: alignedMeasured, flags: [] };
+  }
+
+  _invalidAssessment(metricId, reason) {
+    return {
+      nrmse: NaN,
+      longTermNRMSD: 0,
+      immediateLevel: 0,
+      immediateFeedback: 'Drift assessment unavailable',
+      longTermLevel: 0,
+      longTermFeedback: 'Drift assessment unavailable',
+      valid: false,
+      metricId: String(metricId || this.legacyMetricId),
+      sampleCount: this._ensureMetricState(metricId).sampleCount,
+      longTermReady: false,
+      flags: [reason],
+    };
+  }
+
+  _failOrLog(message, options = {}) {
+    const strict = this._resolveStrict(options);
+    if (strict) {
+      throw new Error(message);
+    }
+    this.logger?.warn?.(message);
+  }
 }
 
 module.exports = ErrorMetrics;

src/nrmse/index.js

@@ -0,0 +1,7 @@
+const nrmse = require('./errorMetrics.js');
+const nrmseConfig = require('./nrmseConfig.json');
+
+module.exports = {
+  nrmse,
+  nrmseConfig,
+};

src/nrmse/nrmseConfig.json

@@ -1,7 +1,7 @@
 {
   "general": {
     "name": {
-      "default": "ErrorMetrics",
+      "default": "errormetrics",
       "rules": {
         "type": "string",
         "description": "A human-readable name for the configuration."
@@ -58,7 +58,7 @@
   },
   "functionality": {
     "softwareType": {
-      "default": "errorMetrics",
+      "default": "errormetrics",
       "rules": {
         "type": "string",
         "description": "Logical name identifying the software type."
@@ -134,5 +134,47 @@
         "description": "High threshold for long-term normalized root mean squared deviation."
       }
     }
+  },
+  "processing": {
+    "windowSize": {
+      "default": 50,
+      "rules": {
+        "type": "integer",
+        "min": 2,
+        "description": "Rolling sample window size used for drift evaluation."
+      }
+    },
+    "minSamplesForLongTerm": {
+      "default": 100,
+      "rules": {
+        "type": "integer",
+        "min": 1,
+        "description": "Minimum sample count before long-term drift is considered mature."
+      }
+    },
+    "ewmaAlpha": {
+      "default": 0.1,
+      "rules": {
+        "type": "number",
+        "min": 0.001,
+        "max": 1,
+        "description": "EWMA smoothing factor for long-term drift trend."
+      }
+    },
+    "alignmentToleranceMs": {
+      "default": 2000,
+      "rules": {
+        "type": "integer",
+        "min": 0,
+        "description": "Maximum timestamp delta allowed between predicted and measured sample pairs."
+      }
+    },
+    "strictValidation": {
+      "default": true,
+      "rules": {
+        "type": "boolean",
+        "description": "When true, invalid inputs raise errors instead of producing silent outputs."
+      }
+    }
   }
 }

src/outliers/index.js

@@ -0,0 +1,5 @@
+const outlierDetection = require('./outlierDetection.js');
+
+module.exports = {
+  outlierDetection,
+};

src/outliers/outlierDetection.js

@@ -61,6 +61,8 @@ class DynamicClusterDeviation {
     }
 }
 
+module.exports = DynamicClusterDeviation;
+
 // Rolling window simulation with outlier detection
 /*
 const detector = new DynamicClusterDeviation();
@@ -86,4 +88,4 @@ dataStream.forEach((value, index) => {
 });
 
 console.log("\nFinal detector cluster states:", JSON.stringify(detector.clusters, null, 2));
-*/
+*/

src/pid/PIDController.js

@@ -0,0 +1,663 @@
+'use strict';
+
+/**
+ * Production-focused discrete PID controller with modern control features:
+ * - auto/manual and bumpless transfer
+ * - freeze/unfreeze (hold output while optionally tracking process)
+ * - derivative filtering and derivative-on-measurement/error
+ * - anti-windup (clamp or back-calculation)
+ * - output and integral limits
+ * - output rate limiting
+ * - deadband
+ * - gain scheduling (array/function)
+ * - feedforward and dynamic tunings at runtime
+ */
+class PIDController {
+  constructor(options = {}) {
+    const {
+      kp = 1,
+      ki = 0,
+      kd = 0,
+      sampleTime = 1000,
+      derivativeFilter = 0.15,
+      outputMin = Number.NEGATIVE_INFINITY,
+      outputMax = Number.POSITIVE_INFINITY,
+      integralMin = null,
+      integralMax = null,
+      derivativeOnMeasurement = true,
+      setpointWeight = 1,
+      derivativeWeight = 0,
+      deadband = 0,
+      outputRateLimitUp = Number.POSITIVE_INFINITY,
+      outputRateLimitDown = Number.POSITIVE_INFINITY,
+      antiWindupMode = 'clamp',
+      backCalculationGain = 0,
+      gainSchedule = null,
+      autoMode = true,
+      trackOnManual = true,
+      frozen = false,
+      freezeTrackMeasurement = true,
+      freezeTrackError = false,
+    } = options;
+
+    this.kp = 0;
+    this.ki = 0;
+    this.kd = 0;
+
+    this.setTunings({ kp, ki, kd });
+    this.setSampleTime(sampleTime);
+    this.setOutputLimits(outputMin, outputMax);
+    this.setIntegralLimits(integralMin, integralMax);
+    this.setDerivativeFilter(derivativeFilter);
+    this.setSetpointWeights({ beta: setpointWeight, gamma: derivativeWeight });
+    this.setDeadband(deadband);
+    this.setOutputRateLimits(outputRateLimitUp, outputRateLimitDown);
+    this.setAntiWindup({ mode: antiWindupMode, backCalculationGain });
+    this.setGainSchedule(gainSchedule);
+
+    this.derivativeOnMeasurement = Boolean(derivativeOnMeasurement);
+    this.autoMode = Boolean(autoMode);
+    this.trackOnManual = Boolean(trackOnManual);
+
+    this.frozen = Boolean(frozen);
+    this.freezeTrackMeasurement = Boolean(freezeTrackMeasurement);
+    this.freezeTrackError = Boolean(freezeTrackError);
+
+    this.reset();
+  }
+
+  setTunings({ kp = this.kp, ki = this.ki, kd = this.kd } = {}) {
+    [kp, ki, kd].forEach((gain, index) => {
+      if (!Number.isFinite(gain)) {
+        const label = ['kp', 'ki', 'kd'][index];
+        throw new TypeError(`${label} must be a finite number`);
+      }
+    });
+
+    this.kp = kp;
+    this.ki = ki;
+    this.kd = kd;
+    return this;
+  }
+
+  setSampleTime(sampleTimeMs = this.sampleTime) {
+    if (!Number.isFinite(sampleTimeMs) || sampleTimeMs <= 0) {
+      throw new RangeError('sampleTime must be a positive number of milliseconds');
+    }
+
+    this.sampleTime = sampleTimeMs;
+    return this;
+  }
+
+  setOutputLimits(min = this.outputMin, max = this.outputMax) {
+    if (!Number.isFinite(min) && min !== Number.NEGATIVE_INFINITY) {
+      throw new TypeError('outputMin must be finite or -Infinity');
+    }
+    if (!Number.isFinite(max) && max !== Number.POSITIVE_INFINITY) {
+      throw new TypeError('outputMax must be finite or Infinity');
+    }
+    if (min >= max) {
+      throw new RangeError('outputMin must be smaller than outputMax');
+    }
+
+    this.outputMin = min;
+    this.outputMax = max;
+    this.lastOutput = this._clamp(this.lastOutput ?? 0, this.outputMin, this.outputMax);
+    return this;
+  }
+
+  setIntegralLimits(min = this.integralMin ?? null, max = this.integralMax ?? null) {
+    if (min !== null && !Number.isFinite(min)) {
+      throw new TypeError('integralMin must be null or a finite number');
+    }
+    if (max !== null && !Number.isFinite(max)) {
+      throw new TypeError('integralMax must be null or a finite number');
+    }
+    if (min !== null && max !== null && min > max) {
+      throw new RangeError('integralMin must be smaller than integralMax');
+    }
+
+    this.integralMin = min;
+    this.integralMax = max;
+    this.integral = this._applyIntegralLimits(this.integral ?? 0);
+    return this;
+  }
+
+  setDerivativeFilter(value = this.derivativeFilter ?? 0) {
+    if (!Number.isFinite(value) || value < 0 || value > 1) {
+      throw new RangeError('derivativeFilter must be between 0 and 1');
+    }
+
+    this.derivativeFilter = value;
+    return this;
+  }
+
+  setSetpointWeights({ beta = this.setpointWeight ?? 1, gamma = this.derivativeWeight ?? 0 } = {}) {
+    if (!Number.isFinite(beta) || !Number.isFinite(gamma)) {
+      throw new TypeError('setpoint and derivative weights must be finite numbers');
+    }
+
+    this.setpointWeight = beta;
+    this.derivativeWeight = gamma;
+    return this;
+  }
+
+  setDeadband(value = this.deadband ?? 0) {
+    if (!Number.isFinite(value) || value < 0) {
+      throw new RangeError('deadband must be a non-negative finite number');
+    }
+
+    this.deadband = value;
+    return this;
+  }
+
+  setOutputRateLimits(up = this.outputRateLimitUp, down = this.outputRateLimitDown) {
+    if (!Number.isFinite(up) && up !== Number.POSITIVE_INFINITY) {
+      throw new TypeError('outputRateLimitUp must be finite or Infinity');
+    }
+    if (!Number.isFinite(down) && down !== Number.POSITIVE_INFINITY) {
+      throw new TypeError('outputRateLimitDown must be finite or Infinity');
+    }
+    if (up <= 0 || down <= 0) {
+      throw new RangeError('output rate limits must be positive values');
+    }
+
+    this.outputRateLimitUp = up;
+    this.outputRateLimitDown = down;
+    return this;
+  }
+
+  setAntiWindup({ mode = this.antiWindupMode ?? 'clamp', backCalculationGain = this.backCalculationGain ?? 0 } = {}) {
+    const normalized = String(mode || 'clamp').trim().toLowerCase();
+    if (normalized !== 'clamp' && normalized !== 'backcalc') {
+      throw new RangeError('anti windup mode must be "clamp" or "backcalc"');
+    }
+    if (!Number.isFinite(backCalculationGain) || backCalculationGain < 0) {
+      throw new RangeError('backCalculationGain must be a non-negative finite number');
+    }
+
+    this.antiWindupMode = normalized;
+    this.backCalculationGain = backCalculationGain;
+    return this;
+  }
+
+  /**
+   * Gain schedule options:
+   * - null: disabled
+   * - function(input, state) => { kp, ki, kd }
+   * - array: [{ min, max, kp, ki, kd }, ...]
+   */
+  setGainSchedule(schedule = null) {
+    if (schedule == null) {
+      this.gainSchedule = null;
+      return this;
+    }
+
+    if (typeof schedule === 'function') {
+      this.gainSchedule = schedule;
+      return this;
+    }
+
+    if (!Array.isArray(schedule)) {
+      throw new TypeError('gainSchedule must be null, a function, or an array');
+    }
+
+    schedule.forEach((entry, index) => {
+      if (!entry || typeof entry !== 'object') {
+        throw new TypeError(`gainSchedule[${index}] must be an object`);
+      }
+      const { min = Number.NEGATIVE_INFINITY, max = Number.POSITIVE_INFINITY, kp, ki, kd } = entry;
+      if (!Number.isFinite(min) && min !== Number.NEGATIVE_INFINITY) {
+        throw new TypeError(`gainSchedule[${index}].min must be finite or -Infinity`);
+      }
+      if (!Number.isFinite(max) && max !== Number.POSITIVE_INFINITY) {
+        throw new TypeError(`gainSchedule[${index}].max must be finite or Infinity`);
+      }
+      if (min >= max) {
+        throw new RangeError(`gainSchedule[${index}] min must be smaller than max`);
+      }
+      [kp, ki, kd].forEach((value, gainIndex) => {
+        const label = ['kp', 'ki', 'kd'][gainIndex];
+        if (!Number.isFinite(value)) {
+          throw new TypeError(`gainSchedule[${index}].${label} must be finite`);
+        }
+      });
+    });
+
+    this.gainSchedule = schedule;
+    return this;
+  }
+
+  setMode(mode, options = {}) {
+    if (mode !== 'automatic' && mode !== 'manual') {
+      throw new Error('mode must be either "automatic" or "manual"');
+    }
+
+    const nextAuto = mode === 'automatic';
+    const previousAuto = this.autoMode;
+    this.autoMode = nextAuto;
+
+    if (options && Number.isFinite(options.manualOutput)) {
+      this.setManualOutput(options.manualOutput);
+    }
+
+    if (!previousAuto && nextAuto) {
+      this._initializeForAuto(options);
+    }
+
+    return this;
+  }
+
+  freeze(options = {}) {
+    this.frozen = true;
+    this.freezeTrackMeasurement = options.trackMeasurement !== false;
+    this.freezeTrackError = Boolean(options.trackError);
+
+    if (Number.isFinite(options.output)) {
+      this.setManualOutput(options.output);
+    }
+
+    return this;
+  }
+
+  unfreeze() {
+    this.frozen = false;
+    return this;
+  }
+
+  isFrozen() {
+    return this.frozen;
+  }
+
+  setManualOutput(value) {
+    this._assertNumeric('manual output', value);
+    this.lastOutput = this._clamp(value, this.outputMin, this.outputMax);
+    return this.lastOutput;
+  }
+
+  reset(state = {}) {
+    const {
+      integral = 0,
+      lastOutput = 0,
+      timestamp = null,
+      prevMeasurement = null,
+      prevError = null,
+      prevDerivativeInput = null,
+      derivativeState = 0,
+    } = state;
+
+    this.integral = this._applyIntegralLimits(Number.isFinite(integral) ? integral : 0);
+    this.prevError = Number.isFinite(prevError) ? prevError : null;
+    this.prevMeasurement = Number.isFinite(prevMeasurement) ? prevMeasurement : null;
+    this.prevDerivativeInput = Number.isFinite(prevDerivativeInput) ? prevDerivativeInput : null;
+    this.lastOutput = this._clamp(
+      Number.isFinite(lastOutput) ? lastOutput : 0,
+      this.outputMin ?? Number.NEGATIVE_INFINITY,
+      this.outputMax ?? Number.POSITIVE_INFINITY
+    );
+    this.lastTimestamp = Number.isFinite(timestamp) ? timestamp : null;
+    this.derivativeState = Number.isFinite(derivativeState) ? derivativeState : 0;
+
+    return this;
+  }
+
+  update(setpoint, measurement, timestamp = Date.now(), options = {}) {
+    if (timestamp && typeof timestamp === 'object' && options && Object.keys(options).length === 0) {
+      options = timestamp;
+      timestamp = Date.now();
+    }
+
+    this._assertNumeric('setpoint', setpoint);
+    this._assertNumeric('measurement', measurement);
+    this._assertNumeric('timestamp', timestamp);
+
+    const opts = options || {};
+
+    if (opts.tunings && typeof opts.tunings === 'object') {
+      this.setTunings(opts.tunings);
+    }
+
+    if (Number.isFinite(opts.gainInput)) {
+      this._applyGainSchedule(opts.gainInput, { setpoint, measurement, timestamp });
+    }
+
+    if (typeof opts.setMode === 'string') {
+      this.setMode(opts.setMode, opts);
+    }
+
+    if (opts.freeze === true) this.freeze(opts);
+    if (opts.unfreeze === true) this.unfreeze();
+
+    if (Number.isFinite(opts.manualOutput)) {
+      this.setManualOutput(opts.manualOutput);
+    }
+
+    const feedForward = Number.isFinite(opts.feedForward) ? opts.feedForward : 0;
+    const force = Boolean(opts.force);
+
+    const error = setpoint - measurement;
+
+    if (!this.autoMode) {
+      if (this.trackOnManual) {
+        this._trackProcessState(setpoint, measurement, error, timestamp);
+      }
+      return this.lastOutput;
+    }
+
+    if (this.frozen) {
+      if (this.freezeTrackMeasurement || this.freezeTrackError) {
+        this._trackProcessState(setpoint, measurement, error, timestamp, {
+          trackMeasurement: this.freezeTrackMeasurement,
+          trackError: this.freezeTrackError,
+        });
+      }
+      return this.lastOutput;
+    }
+
+    if (!force && this.lastTimestamp !== null && (timestamp - this.lastTimestamp) < this.sampleTime) {
+      return this.lastOutput;
+    }
+
+    const elapsedMs = this.lastTimestamp === null ? this.sampleTime : (timestamp - this.lastTimestamp);
+    const dtSeconds = Math.max(elapsedMs / 1000, Number.EPSILON);
+
+    const inDeadband = Math.abs(error) <= this.deadband;
+    if (inDeadband) {
+      this.prevError = error;
+      this.prevMeasurement = measurement;
+      this.prevDerivativeInput = this.derivativeOnMeasurement
+        ? measurement
+        : ((this.derivativeWeight * setpoint) - measurement);
+      this.lastTimestamp = timestamp;
+      return this.lastOutput;
+    }
+
+    const effectiveError = error;
+
+    const pInput = (this.setpointWeight * setpoint) - measurement;
+    const pTerm = this.kp * pInput;
+
+    const derivativeRaw = this._computeDerivative({ setpoint, measurement, error, dtSeconds });
+    this.derivativeState = this.derivativeFilter === 0
+      ? derivativeRaw
+      : this.derivativeState + (derivativeRaw - this.derivativeState) * (1 - this.derivativeFilter);
+
+    const dTerm = this.kd * this.derivativeState;
+
+    const nextIntegral = this._applyIntegralLimits(this.integral + (effectiveError * dtSeconds));
+    let unclampedOutput = pTerm + (this.ki * nextIntegral) + dTerm + feedForward;
+    let clampedOutput = this._clamp(unclampedOutput, this.outputMin, this.outputMax);
+
+    if (this.antiWindupMode === 'backcalc' && this.ki !== 0 && this.backCalculationGain > 0) {
+      const correctedIntegral = nextIntegral + ((clampedOutput - unclampedOutput) * this.backCalculationGain * dtSeconds);
+      this.integral = this._applyIntegralLimits(correctedIntegral);
+    } else {
+      const saturatingHigh = clampedOutput >= this.outputMax && effectiveError > 0;
+      const saturatingLow = clampedOutput <= this.outputMin && effectiveError < 0;
+      this.integral = (saturatingHigh || saturatingLow) ? this.integral : nextIntegral;
+    }
+
+    let output = pTerm + (this.ki * this.integral) + dTerm + feedForward;
+    output = this._clamp(output, this.outputMin, this.outputMax);
+
+    if (this.lastTimestamp !== null) {
+      output = this._applyRateLimit(output, this.lastOutput, dtSeconds);
+    }
+
+    if (Number.isFinite(opts.trackingOutput)) {
+      this._trackIntegralToOutput(opts.trackingOutput, { pTerm, dTerm, feedForward });
+      output = this._clamp(opts.trackingOutput, this.outputMin, this.outputMax);
+    }
+
+    this.lastOutput = output;
+    this.prevError = error;
+    this.prevMeasurement = measurement;
+    this.prevDerivativeInput = this.derivativeOnMeasurement
+      ? measurement
+      : ((this.derivativeWeight * setpoint) - measurement);
+    this.lastTimestamp = timestamp;
+
+    return this.lastOutput;
+  }
+
+  getState() {
+    return {
+      kp: this.kp,
+      ki: this.ki,
+      kd: this.kd,
+      sampleTime: this.sampleTime,
+      outputLimits: { min: this.outputMin, max: this.outputMax },
+      integralLimits: { min: this.integralMin, max: this.integralMax },
+      derivativeFilter: this.derivativeFilter,
+      derivativeOnMeasurement: this.derivativeOnMeasurement,
+      setpointWeight: this.setpointWeight,
+      derivativeWeight: this.derivativeWeight,
+      deadband: this.deadband,
+      outputRateLimits: { up: this.outputRateLimitUp, down: this.outputRateLimitDown },
+      antiWindupMode: this.antiWindupMode,
+      backCalculationGain: this.backCalculationGain,
+      autoMode: this.autoMode,
+      frozen: this.frozen,
+      integral: this.integral,
+      derivativeState: this.derivativeState,
+      lastOutput: this.lastOutput,
+      lastTimestamp: this.lastTimestamp,
+    };
+  }
+
+  getLastOutput() {
+    return this.lastOutput;
+  }
+
+  _initializeForAuto(options = {}) {
+    const setpoint = Number.isFinite(options.setpoint) ? options.setpoint : null;
+    const measurement = Number.isFinite(options.measurement) ? options.measurement : null;
+    const timestamp = Number.isFinite(options.timestamp) ? options.timestamp : Date.now();
+
+    if (measurement !== null) {
+      this.prevMeasurement = measurement;
+    }
+    if (setpoint !== null && measurement !== null) {
+      this.prevError = setpoint - measurement;
+      this.prevDerivativeInput = this.derivativeOnMeasurement
+        ? measurement
+        : ((this.derivativeWeight * setpoint) - measurement);
+    }
+
+    this.lastTimestamp = timestamp;
+
+    if (this.ki !== 0 && setpoint !== null && measurement !== null) {
+      const pTerm = this.kp * ((this.setpointWeight * setpoint) - measurement);
+      const dTerm = this.kd * this.derivativeState;
+      const trackedIntegral = (this.lastOutput - pTerm - dTerm) / this.ki;
+      this.integral = this._applyIntegralLimits(Number.isFinite(trackedIntegral) ? trackedIntegral : this.integral);
+    }
+  }
+
+  _trackProcessState(setpoint, measurement, error, timestamp, tracking = {}) {
+    const trackMeasurement = tracking.trackMeasurement !== false;
+    const trackError = Boolean(tracking.trackError);
+
+    if (trackMeasurement) {
+      this.prevMeasurement = measurement;
+      this.prevDerivativeInput = this.derivativeOnMeasurement
+        ? measurement
+        : ((this.derivativeWeight * setpoint) - measurement);
+    }
+
+    if (trackError) {
+      this.prevError = error;
+    }
+
+    this.lastTimestamp = timestamp;
+  }
+
+  _trackIntegralToOutput(trackingOutput, terms) {
+    if (this.ki === 0) return;
+    const { pTerm, dTerm, feedForward } = terms;
+    const targetIntegral = (trackingOutput - pTerm - dTerm - feedForward) / this.ki;
+    if (Number.isFinite(targetIntegral)) {
+      this.integral = this._applyIntegralLimits(targetIntegral);
+    }
+  }
+
+  _applyGainSchedule(input, state) {
+    if (!this.gainSchedule) return;
+
+    if (typeof this.gainSchedule === 'function') {
+      const tunings = this.gainSchedule(input, this.getState(), state);
+      if (tunings && typeof tunings === 'object') {
+        this.setTunings(tunings);
+      }
+      return;
+    }
+
+    const matched = this.gainSchedule.find((entry) => input >= entry.min && input < entry.max);
+    if (matched) {
+      this.setTunings({ kp: matched.kp, ki: matched.ki, kd: matched.kd });
+    }
+  }
+
+  _computeDerivative({ setpoint, measurement, error, dtSeconds }) {
+    if (!(dtSeconds > 0) || !Number.isFinite(dtSeconds)) {
+      return 0;
+    }
+
+    if (this.derivativeOnMeasurement) {
+      if (this.prevMeasurement === null) return 0;
+      return -(measurement - this.prevMeasurement) / dtSeconds;
+    }
+
+    const derivativeInput = (this.derivativeWeight * setpoint) - measurement;
+    if (this.prevDerivativeInput === null) return 0;
+    const derivativeFromInput = (derivativeInput - this.prevDerivativeInput) / dtSeconds;
+
+    if (Number.isFinite(derivativeFromInput)) {
+      return derivativeFromInput;
+    }
+
+    if (this.prevError === null) return 0;
+    return (error - this.prevError) / dtSeconds;
+  }
+
+  _applyRateLimit(nextOutput, previousOutput, dtSeconds) {
+    const maxRise = Number.isFinite(this.outputRateLimitUp)
+      ? this.outputRateLimitUp * dtSeconds
+      : Number.POSITIVE_INFINITY;
+    const maxFall = Number.isFinite(this.outputRateLimitDown)
+      ? this.outputRateLimitDown * dtSeconds
+      : Number.POSITIVE_INFINITY;
+
+    const lower = previousOutput - maxFall;
+    const upper = previousOutput + maxRise;
+    return this._clamp(nextOutput, lower, upper);
+  }
+
+  _applyIntegralLimits(value) {
+    if (!Number.isFinite(value)) {
+      return 0;
+    }
+
+    let result = value;
+    if (this.integralMin !== null && result < this.integralMin) {
+      result = this.integralMin;
+    }
+    if (this.integralMax !== null && result > this.integralMax) {
+      result = this.integralMax;
+    }
+    return result;
+  }
+
+  _assertNumeric(label, value) {
+    if (!Number.isFinite(value)) {
+      throw new TypeError(`${label} must be a finite number`);
+    }
+  }
+
+  _clamp(value, min, max) {
+    if (value < min) return min;
+    if (value > max) return max;
+    return value;
+  }
+}
+
+/**
+ * Cascade PID utility:
+ * - primary PID controls the outer variable
+ * - primary output becomes setpoint for secondary PID
+ */
+class CascadePIDController {
+  constructor(options = {}) {
+    const {
+      primary = {},
+      secondary = {},
+    } = options;
+
+    this.primary = primary instanceof PIDController ? primary : new PIDController(primary);
+    this.secondary = secondary instanceof PIDController ? secondary : new PIDController(secondary);
+  }
+
+  update({
+    setpoint,
+    primaryMeasurement,
+    secondaryMeasurement,
+    timestamp = Date.now(),
+    primaryOptions = {},
+    secondaryOptions = {},
+  } = {}) {
+    if (!Number.isFinite(setpoint)) {
+      throw new TypeError('setpoint must be a finite number');
+    }
+    if (!Number.isFinite(primaryMeasurement)) {
+      throw new TypeError('primaryMeasurement must be a finite number');
+    }
+    if (!Number.isFinite(secondaryMeasurement)) {
+      throw new TypeError('secondaryMeasurement must be a finite number');
+    }
+
+    const secondarySetpoint = this.primary.update(setpoint, primaryMeasurement, timestamp, primaryOptions);
+    const controlOutput = this.secondary.update(secondarySetpoint, secondaryMeasurement, timestamp, secondaryOptions);
+
+    return {
+      primaryOutput: secondarySetpoint,
+      secondaryOutput: controlOutput,
+      state: this.getState(),
+    };
+  }
+
+  setMode(mode, options = {}) {
+    this.primary.setMode(mode, options.primary || options);
+    this.secondary.setMode(mode, options.secondary || options);
+    return this;
+  }
+
+  freeze(options = {}) {
+    this.primary.freeze(options.primary || options);
+    this.secondary.freeze(options.secondary || options);
+    return this;
+  }
+
+  unfreeze() {
+    this.primary.unfreeze();
+    this.secondary.unfreeze();
+    return this;
+  }
+
+  reset(state = {}) {
+    this.primary.reset(state.primary || {});
+    this.secondary.reset(state.secondary || {});
+    return this;
+  }
+
+  getState() {
+    return {
+      primary: this.primary.getState(),
+      secondary: this.secondary.getState(),
+    };
+  }
+}
+
+module.exports = {
+  PIDController,
+  CascadePIDController,
+};

src/pid/examples.js

@@ -0,0 +1,87 @@
+const { PIDController } = require('./index');
+
+console.log('=== PID CONTROLLER EXAMPLES ===\n');
+console.log('This guide shows how to instantiate, tune, and operate the PID helper.\n');
+
+// ====================================
+// EXAMPLE 1: FLOW CONTROL LOOP
+// ====================================
+console.log('--- Example 1: Pump speed control ---');
+
+const pumpController = new PIDController({
+  kp: 1.1,
+  ki: 0.35,
+  kd: 0.08,
+  sampleTime: 250, // ms
+  outputMin: 0,
+  outputMax: 100,
+  derivativeFilter: 0.2
+});
+
+const pumpSetpoint = 75; // desired flow percentage
+let pumpFlow = 20;
+const pumpStart = Date.now();
+
+for (let i = 0; i < 10; i += 1) {
+  const timestamp = pumpStart + (i + 1) * pumpController.sampleTime;
+  const controlSignal = pumpController.update(pumpSetpoint, pumpFlow, timestamp);
+
+  // Simple first-order plant approximation
+  pumpFlow += (controlSignal - pumpFlow) * 0.12;
+  pumpFlow -= (pumpFlow - pumpSetpoint) * 0.05; // disturbance rejection
+
+  console.log(
+    `Cycle ${i + 1}: output=${controlSignal.toFixed(2)}% | flow=${pumpFlow.toFixed(2)}%`
+  );
+}
+
+console.log('Pump loop state:', pumpController.getState(), '\n');
+
+// ====================================
+// EXAMPLE 2: TANK LEVEL WITH MANUAL/AUTO
+// ====================================
+console.log('--- Example 2: Tank level handover ---');
+
+const tankController = new PIDController({
+  kp: 2.0,
+  ki: 0.5,
+  kd: 0.25,
+  sampleTime: 400,
+  derivativeFilter: 0.25,
+  outputMin: 0,
+  outputMax: 1
+}).setIntegralLimits(-0.3, 0.3);
+
+tankController.setMode('manual');
+tankController.setManualOutput(0.4);
+console.log(`Manual output locked at ${tankController.getLastOutput().toFixed(2)}\n`);
+
+tankController.setMode('automatic');
+
+let level = 0.2;
+const levelSetpoint = 0.8;
+const tankStart = Date.now();
+
+for (let step = 0; step < 8; step += 1) {
+  const timestamp = tankStart + (step + 1) * tankController.sampleTime;
+  const output = tankController.update(levelSetpoint, level, timestamp);
+
+  // Integrating process with slight disturbance
+  level += (output - 0.5) * 0.18;
+  level += 0.02; // inflow bump
+  level = Math.max(0, Math.min(1, level));
+
+  console.log(
+    `Cycle ${step + 1}: output=${output.toFixed(3)} | level=${level.toFixed(3)}`
+  );
+}
+
+console.log('\nBest practice tips:');
+console.log('  - Call update() on a fixed interval (sampleTime).');
+console.log('  - Clamp output and integral to avoid windup.');
+console.log('  - Use setMode("manual") during maintenance or bump-less transfer.');
+
+module.exports = {
+  pumpController,
+  tankController
+};

src/pid/index.js

@@ -0,0 +1,14 @@
+const { PIDController, CascadePIDController } = require('./PIDController');
+
+/**
+ * Convenience factories.
+ */
+const createPidController = (options) => new PIDController(options);
+const createCascadePidController = (options) => new CascadePIDController(options);
+
+module.exports = {
+  PIDController,
+  CascadePIDController,
+  createPidController,
+  createCascadePidController,
+};

src/predict/index.js

@@ -0,0 +1,9 @@
+const predict = require('./predict_class.js');
+const interpolation = require('./interpolation.js');
+const predictConfig = require('./predictConfig.json');
+
+module.exports = {
+  predict,
+  interpolation,
+  predictConfig,
+};

src/predict/interpolation.js

@@ -88,7 +88,7 @@ class Interpolation {
   array_values(obj) {
     const new_array = [];
     for (let i in obj) {
-      if (obj.hasOwnProperty(i)) {
+      if (Object.prototype.hasOwnProperty.call(obj, i)) {
         new_array.push(obj[i]);
       }
     }
@@ -101,6 +101,7 @@ class Interpolation {
     } else if (type == "monotone_cubic_spline") {
       this.monotonic_cubic_spline();
     } else if (type == "linear") {
+      /* intentionally empty */
     } else {
       this.error = 1000;
     }
@@ -230,7 +231,6 @@ class Interpolation {
     let xdata = this.input_xdata;
     let ydata = this.input_ydata;
 
-    let interpolationtype = this.interpolationtype;
     let tension = this.tension;
 
     let n = ydata.length;
@@ -266,6 +266,7 @@ class Interpolation {
     let k = 0;
 
     if (xpoint < xdata[0] || xpoint > xdata[n - 1]) {
+      /* intentionally empty */
     }
 
     while (k < n - 1 && xpoint > xdata[k + 1] && !(xpoint < xdata[0] || xpoint > xdata[n - 1])) {

src/predict/predict_class.js

@@ -161,6 +161,11 @@ class Predict {
     //find index of y peak
     const { peak , peakIndex } = this.getLocalPeak(curve.y);
 
+    // Guard against invalid peakIndex (e.g. empty array returns -1)
+    if (peakIndex < 0 || peakIndex >= curve.x.length) {
+      return { yPeak: null, x: null, xProcent: null };
+    }
+
     // scale the x value to procentual value
     const yPeak = peak;
     const x = curve.x[peakIndex];

src/state/index.js

@@ -0,0 +1,11 @@
+const state = require('./state.js');
+const stateManager = require('./stateManager.js');
+const movementManager = require('./movementManager.js');
+const stateConfig = require('./stateConfig.json');
+
+module.exports = {
+  state,
+  stateManager,
+  movementManager,
+  stateConfig,
+};

src/state/movementManager.js

@@ -13,12 +13,12 @@ class movementManager {
 
     this.speed = speed;
     this.maxSpeed = maxSpeed;
-      console.log(`MovementManager: Initial speed=${this.speed}, maxSpeed=${maxSpeed}`);
     this.interval = interval;
     this.timeleft = 0; // timeleft of current movement
 
     this.logger = logger;
     this.movementMode = config.movement.mode;
+    this.logger?.debug?.(`MovementManager initialized: speed=${this.speed}, maxSpeed=${this.maxSpeed}`);
   }
 
   getCurrentPosition() {
@@ -49,15 +49,17 @@ class movementManager {
     try {
       // Execute the movement logic based on the mode
       switch (this.movementMode) {
-        case "staticspeed":
+        case "staticspeed": {
           const movelinFeedback = await this.moveLinear(targetPosition,signal);
           this.logger.info(`Linear move: ${movelinFeedback} `);
           break;
+        }
 
-        case "dynspeed":
+        case "dynspeed": {
           const moveDynFeedback = await this.moveEaseInOut(targetPosition,signal);
           this.logger.info(`Dynamic move : ${moveDynFeedback}`);
           break;
+        }
 
         default:
           throw new Error(`Unsupported movement mode: ${this.movementMode}`);
@@ -81,11 +83,8 @@ class movementManager {
     const direction = targetPosition > this.currentPosition ? 1 : -1;
     const distance  = Math.abs(targetPosition - this.currentPosition);
 
-    // Speed is a fraction [0,1] of full-range per second
+    const velocity = this.getVelocity(); // units per second
-    this.speed = Math.min(Math.max(this.speed, 0), 1);
+    if (velocity <= 0) {
-    const fullRange = this.maxPosition - this.minPosition;
-    const velocity  = this.speed * fullRange;      // units per second
-    if (velocity === 0) {
       return reject(new Error("Movement aborted: zero speed"));
     }
 
@@ -154,11 +153,11 @@ class movementManager {
       const direction = targetPosition > this.currentPosition ? 1 : -1;
       const distance = Math.abs(targetPosition - this.currentPosition);
 
-      // Ensure speed is a percentage [0, 1]
+      const velocity = this.getVelocity();
-      this.speed = Math.min(Math.max(this.speed, 0), 1);
+      if (velocity <= 0) {
-
+        return reject(new Error("Movement aborted: zero speed"));
-      // Calculate duration based on percentage of distance per second
+      }
-      const duration = 1 / this.speed; // 1 second for 100% of the distance
+      const duration = distance / velocity;
 
       this.timeleft = duration; //set this so other classes can use it
       this.logger.debug(
@@ -214,16 +213,18 @@ class movementManager {
         return reject(new Error("Movement aborted"));
       }
 
-      const direction = targetPosition > this.currentPosition ? 1 : -1;
       const totalDistance = Math.abs(targetPosition - this.currentPosition);
       const startPosition = this.currentPosition;
-      this.speed = Math.min(Math.max(this.speed, 0), 1);
+      const velocity = this.getVelocity();
+      if (velocity <= 0) {
+        return reject(new Error("Movement aborted: zero speed"));
+      }
 
       const easeFunction = (t) =>
         t < 0.5 ? 4 * t * t * t : 1 - Math.pow(-2 * t + 2, 3) / 2;
 
       let elapsedTime = 0;
-      const duration = totalDistance / this.speed;
+      const duration = totalDistance / velocity;
       this.timeleft = duration;
       const interval = this.interval;
 
@@ -273,6 +274,20 @@ class movementManager {
   constrain(value) {
     return Math.min(Math.max(value, this.minPosition), this.maxPosition);
   }
+
+  getNormalizedSpeed() {
+    const rawSpeed = Number.isFinite(this.speed) ? this.speed : 0;
+    const clampedSpeed = Math.max(0, rawSpeed);
+    const hasMax = Number.isFinite(this.maxSpeed) && this.maxSpeed > 0;
+    const effectiveSpeed = hasMax ? Math.min(clampedSpeed, this.maxSpeed) : clampedSpeed;
+    return effectiveSpeed / 100; // convert %/s -> fraction of range per second
+  }
+
+  getVelocity() {
+    const normalizedSpeed = this.getNormalizedSpeed();
+    const fullRange = this.maxPosition - this.minPosition;
+    return normalizedSpeed * fullRange;
+  }
 }
 
 module.exports = movementManager;

src/state/state.js

@@ -52,7 +52,11 @@ class state{
     return this.stateManager.getRunTimeHours();
   }
 
+  getMaintenanceTimeHours(){
+    return this.stateManager.getMaintenanceTimeHours();
+  }
 
+ 
   async moveTo(targetPosition) {
 
     // Check for invalid conditions and throw errors

src/state/stateConfig.json

@@ -127,7 +127,7 @@
         }
       },
       "maxSpeed": {
-        "default": 10,
+        "default": 1000,
         "rules": {
           "type": "number",
           "description": "Maximum speed setting."
@@ -205,6 +205,10 @@
             {
               "value": "off",
               "description": "Machine is off."
+            },
+            {
+              "value": "maintenance",
+              "description": "Machine locked for inspection or repair; automatic control disabled."
             }
           ],
           "description": "Current state of the machine."
@@ -216,7 +220,7 @@
           "type": "object",
           "schema": {
             "idle": {
-              "default": ["starting", "off","emergencystop"],
+              "default": ["starting", "off","emergencystop","maintenance"],
               "rules":{
                 "type": "set",
                 "itemType": "string",
@@ -280,7 +284,7 @@
               }
             },
             "off": {
-              "default": ["idle","emergencystop"],
+              "default": ["idle","emergencystop","maintenance"],
               "rules":{
                 "type": "set",
                 "itemType": "string",
@@ -288,12 +292,20 @@
               }
           },
           "emergencystop": {
-            "default": ["idle","off"],
+            "default": ["idle","off","maintenance"],
             "rules":{
               "type": "set",
               "itemType": "string",
               "description": "Allowed transitions from emergency stop state."
             }
+          },
+          "maintenance":  { 
+            "default": ["maintenance","idle","off"],
+            "rules":{
+              "type": "set",
+              "itemType": "string",
+              "description": "Allowed transitions for maintenance mode"
+            }
           }
         },
         "description": "Allowed transitions between states."

src/state/stateManager.js

@@ -48,10 +48,14 @@ class stateManager {
     // Define valid transitions (can be extended dynamically if needed)
     this.validTransitions = config.state.allowedTransitions;
 
-    // NEW: Initialize runtime tracking
+    //runtime tracking
     this.runTimeHours = 0; // cumulative runtime in hours
     this.runTimeStart = null; // timestamp when active state began
 
+    //maintenance tracking
+    this.maintenanceTimeStart = null; //timestamp when active state began
+    this.maintenanceTimeHours = 0; //cumulative
+
     // Define active states (runtime counts only in these states)
     this.activeStates = config.state.activeStates;
   }
@@ -59,7 +63,7 @@ class stateManager {
   getCurrentState() {
     return this.currentState;
   }
-
+  
   transitionTo(newState,signal) {
     return new Promise((resolve, reject) => {
       if (signal && signal.aborted) {
@@ -73,8 +77,9 @@ class stateManager {
         ); //go back early and reject promise
       }
 
-      // NEW: Handle runtime tracking based on active states
+      //Time tracking based on active states
       this.handleRuntimeTracking(newState);
+      this.handleMaintenancetimeTracking(newState);
 
       const transitionDuration = this.transitionTimes[this.currentState] || 0; // Default to 0 if no transition time
       this.logger.debug(
@@ -100,7 +105,7 @@ class stateManager {
   }
 
   handleRuntimeTracking(newState) {
-    // NEW: Handle runtime tracking based on active states
+    //Handle runtime tracking based on active states
     const wasActive = this.activeStates.has(this.currentState);
     const willBeActive = this.activeStates.has(newState);
     if (wasActive && !willBeActive && this.runTimeStart) {
@@ -120,6 +125,28 @@ class stateManager {
     }
   }
 
+  handleMaintenancetimeTracking(newState) {
+    //is this maintenance time ?
+    const wasActive = (this.currentState == "maintenance"? true:false);
+    const willBeActive = ( newState == "maintenance" ? true:false );
+
+    if (wasActive && this.maintenanceTimeStart) {
+      // stop runtime timer and accumulate elapsed time
+      const elapsed = (Date.now() - this.maintenanceTimeStart) / 3600000; // hours
+      this.maintenanceTimeHours += elapsed;
+      this.maintenanceTimeStart = null;
+      this.logger.debug(
+        `Maintenance timer stopped; elapsed=${elapsed.toFixed(
+          3
+        )}h, total=${this.maintenanceTimeHours.toFixed(3)}h.`
+      );
+    } else if (willBeActive && !this.runTimeStart) {
+      // starting new runtime
+      this.maintenanceTimeStart = Date.now();
+      this.logger.debug("Runtime timer started.");
+    }
+  }
+
   isValidTransition(newState) {
     this.logger.debug(
       `Check 1 Transition valid ? From ${
@@ -150,7 +177,6 @@ class stateManager {
     return this.descriptions[state] || "No description available.";
   }
 
-  // NEW: Getter to retrieve current cumulative runtime (active time) in hours.
   getRunTimeHours() {
     // If currently active add the ongoing duration.
     let currentElapsed = 0;
@@ -159,6 +185,15 @@ class stateManager {
     }
     return this.runTimeHours + currentElapsed;
   }
+
+  getMaintenanceTimeHours() {
+    // If currently active add the ongoing duration.
+    let currentElapsed = 0;
+    if (this.maintenanceTimeStart) {
+      currentElapsed = (Date.now() - this.maintenanceTimeStart) / 3600000;
+    }
+    return this.maintenanceTimeHours + currentElapsed;
+  }
 }
 
 module.exports = stateManager;

test/00-barrel-contract.test.js

@@ -0,0 +1,50 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const barrel = require('../index.js');
+
+test('barrel exports expected public members', () => {
+  const expected = [
+    'predict',
+    'interpolation',
+    'configManager',
+    'assetApiConfig',
+    'outputUtils',
+    'configUtils',
+    'logger',
+    'validation',
+    'assertions',
+    'MeasurementContainer',
+    'nrmse',
+    'state',
+    'coolprop',
+    'convert',
+    'MenuManager',
+    'PIDController',
+    'CascadePIDController',
+    'createPidController',
+    'createCascadePidController',
+    'childRegistrationUtils',
+    'loadCurve',
+    'loadModel',
+    'gravity',
+  ];
+
+  for (const key of expected) {
+    assert.ok(key in barrel, `missing export: ${key}`);
+  }
+});
+
+test('barrel types are callable where expected', () => {
+  assert.equal(typeof barrel.logger, 'function');
+  assert.equal(typeof barrel.validation, 'function');
+  assert.equal(typeof barrel.configUtils, 'function');
+  assert.equal(typeof barrel.outputUtils, 'function');
+  assert.equal(typeof barrel.MeasurementContainer, 'function');
+  assert.equal(typeof barrel.convert, 'function');
+  assert.equal(typeof barrel.PIDController, 'function');
+  assert.equal(typeof barrel.CascadePIDController, 'function');
+  assert.equal(typeof barrel.createPidController, 'function');
+  assert.equal(typeof barrel.createCascadePidController, 'function');
+  assert.equal(typeof barrel.gravity.getStandardGravity, 'function');
+});

test/assertions.test.js

@@ -0,0 +1,14 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const Assertions = require('../src/helper/assertionUtils.js');
+
+test('assertNoNaN does not throw for valid nested arrays', () => {
+  const assertions = new Assertions();
+  assert.doesNotThrow(() => assertions.assertNoNaN([1, [2, 3, [4]]]));
+});
+
+test('assertNoNaN throws when NaN exists in nested arrays', () => {
+  const assertions = new Assertions();
+  assert.throws(() => assertions.assertNoNaN([1, [2, NaN]]), /NaN detected/);
+});

test/child-registration-utils.test.js

@@ -0,0 +1,55 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const ChildRegistrationUtils = require('../src/helper/childRegistrationUtils.js');
+
+function makeMainClass() {
+  return {
+    logger: {
+      debug() {},
+      info() {},
+      warn() {},
+      error() {},
+    },
+    child: {},
+    registerChildCalls: [],
+    registerChild(child, softwareType) {
+      this.registerChildCalls.push({ child, softwareType });
+    },
+  };
+}
+
+test('registerChild wires parent, measurement context, and storage', async () => {
+  const mainClass = makeMainClass();
+  const utils = new ChildRegistrationUtils(mainClass);
+
+  const measurementContext = {
+    childId: null,
+    childName: null,
+    parentRef: null,
+    setChildId(v) { this.childId = v; },
+    setChildName(v) { this.childName = v; },
+    setParentRef(v) { this.parentRef = v; },
+  };
+
+  const child = {
+    config: {
+      functionality: { softwareType: 'measurement' },
+      general: { name: 'PT1', id: 'child-1' },
+      asset: { category: 'sensor' },
+    },
+    measurements: measurementContext,
+  };
+
+  await utils.registerChild(child, 'upstream');
+
+  assert.deepEqual(child.parent, [mainClass]);
+  assert.equal(child.positionVsParent, 'upstream');
+  assert.equal(measurementContext.childId, 'child-1');
+  assert.equal(measurementContext.childName, 'PT1');
+  assert.equal(measurementContext.parentRef, mainClass);
+
+  assert.equal(mainClass.child.measurement.sensor.length, 1);
+  assert.equal(utils.getChildById('child-1'), child);
+  assert.equal(mainClass.registerChildCalls.length, 1);
+});

test/childRegistration.test.js

@@ -0,0 +1,360 @@
+const ChildRegistrationUtils = require('../src/helper/childRegistrationUtils');
+const { POSITIONS } = require('../src/constants/positions');
+
+// ── Helpers ──────────────────────────────────────────────────────────────────
+
+/** Create a minimal mock parent (mainClass) that ChildRegistrationUtils expects. */
+function createMockParent(opts = {}) {
+  return {
+    child: {},
+    logger: {
+      debug: jest.fn(),
+      info: jest.fn(),
+      warn: jest.fn(),
+      error: jest.fn(),
+    },
+    // optionally provide a registerChild callback so the utils can delegate
+    registerChild: opts.registerChild || undefined,
+    ...opts,
+  };
+}
+
+/** Create a minimal mock child node with the given overrides. */
+function createMockChild(overrides = {}) {
+  const defaults = {
+    config: {
+      general: {
+        id: overrides.id || 'child-1',
+        name: overrides.name || 'TestChild',
+      },
+      functionality: {
+        softwareType: overrides.softwareType !== undefined ? overrides.softwareType : 'measurement',
+        positionVsParent: overrides.position || POSITIONS.UPSTREAM,
+      },
+      asset: {
+        category: overrides.category || 'sensor',
+        type: overrides.assetType || 'pressure',
+      },
+    },
+    measurements: overrides.measurements || null,
+  };
+  // allow caller to add extra top-level props
+  return { ...defaults, ...(overrides.extra || {}) };
+}
+
+// ── Tests ────────────────────────────────────────────────────────────────────
+
+describe('ChildRegistrationUtils', () => {
+  let parent;
+  let utils;
+
+  beforeEach(() => {
+    parent = createMockParent();
+    utils = new ChildRegistrationUtils(parent);
+  });
+
+  // ── Construction ─────────────────────────────────────────────────────────
+  describe('constructor', () => {
+    it('should store a reference to the mainClass', () => {
+      expect(utils.mainClass).toBe(parent);
+    });
+
+    it('should initialise with an empty registeredChildren map', () => {
+      expect(utils.registeredChildren.size).toBe(0);
+    });
+
+    it('should use the parent logger', () => {
+      expect(utils.logger).toBe(parent.logger);
+    });
+  });
+
+  // ── registerChild ────────────────────────────────────────────────────────
+  describe('registerChild()', () => {
+    it('should register a child and store it in the internal map', async () => {
+      const child = createMockChild();
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+
+      expect(utils.registeredChildren.size).toBe(1);
+      expect(utils.registeredChildren.has('child-1')).toBe(true);
+    });
+
+    it('should store softwareType, position and timestamp in the registry entry', async () => {
+      const child = createMockChild({ softwareType: 'machine' });
+      const before = Date.now();
+      await utils.registerChild(child, POSITIONS.DOWNSTREAM);
+      const after = Date.now();
+
+      const entry = utils.registeredChildren.get('child-1');
+      expect(entry.softwareType).toBe('machine');
+      expect(entry.position).toBe(POSITIONS.DOWNSTREAM);
+      expect(entry.registeredAt).toBeGreaterThanOrEqual(before);
+      expect(entry.registeredAt).toBeLessThanOrEqual(after);
+    });
+
+    it('should store the child in mainClass.child[softwareType][category]', async () => {
+      const child = createMockChild({ softwareType: 'measurement', category: 'sensor' });
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+
+      expect(parent.child.measurement).toBeDefined();
+      expect(parent.child.measurement.sensor).toBeInstanceOf(Array);
+      expect(parent.child.measurement.sensor).toContain(child);
+    });
+
+    it('should set the parent reference on the child', async () => {
+      const child = createMockChild();
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+
+      expect(child.parent).toEqual([parent]);
+    });
+
+    it('should set positionVsParent on the child', async () => {
+      const child = createMockChild();
+      await utils.registerChild(child, POSITIONS.DOWNSTREAM);
+
+      expect(child.positionVsParent).toBe(POSITIONS.DOWNSTREAM);
+    });
+
+    it('should lowercase the softwareType before storing', async () => {
+      const child = createMockChild({ softwareType: 'Measurement' });
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+
+      const entry = utils.registeredChildren.get('child-1');
+      expect(entry.softwareType).toBe('measurement');
+      expect(parent.child.measurement).toBeDefined();
+    });
+
+    it('should delegate to mainClass.registerChild when it is a function', async () => {
+      const registerSpy = jest.fn();
+      parent.registerChild = registerSpy;
+      const child = createMockChild({ softwareType: 'measurement' });
+
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+
+      expect(registerSpy).toHaveBeenCalledWith(child, 'measurement');
+    });
+
+    it('should NOT throw when mainClass has no registerChild method', async () => {
+      delete parent.registerChild;
+      const child = createMockChild();
+
+      await expect(utils.registerChild(child, POSITIONS.UPSTREAM)).resolves.not.toThrow();
+    });
+
+    it('should log a debug message on registration', async () => {
+      const child = createMockChild({ name: 'Pump1', id: 'p1' });
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+
+      expect(parent.logger.debug).toHaveBeenCalledWith(
+        expect.stringContaining('Registering child: Pump1')
+      );
+    });
+
+    it('should handle empty softwareType gracefully', async () => {
+      const child = createMockChild({ softwareType: '' });
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+
+      const entry = utils.registeredChildren.get('child-1');
+      expect(entry.softwareType).toBe('');
+    });
+  });
+
+  // ── Multiple children ────────────────────────────────────────────────────
+  describe('multiple children registration', () => {
+    it('should register multiple children of the same softwareType', async () => {
+      const c1 = createMockChild({ id: 'c1', name: 'Sensor1', softwareType: 'measurement' });
+      const c2 = createMockChild({ id: 'c2', name: 'Sensor2', softwareType: 'measurement' });
+
+      await utils.registerChild(c1, POSITIONS.UPSTREAM);
+      await utils.registerChild(c2, POSITIONS.DOWNSTREAM);
+
+      expect(utils.registeredChildren.size).toBe(2);
+      expect(parent.child.measurement.sensor).toHaveLength(2);
+    });
+
+    it('should register children of different softwareTypes', async () => {
+      const sensor = createMockChild({ id: 's1', softwareType: 'measurement' });
+      const machine = createMockChild({ id: 'm1', softwareType: 'machine', category: 'pump' });
+
+      await utils.registerChild(sensor, POSITIONS.UPSTREAM);
+      await utils.registerChild(machine, POSITIONS.AT_EQUIPMENT);
+
+      expect(parent.child.measurement).toBeDefined();
+      expect(parent.child.machine).toBeDefined();
+      expect(parent.child.machine.pump).toContain(machine);
+    });
+
+    it('should register children of different categories under the same softwareType', async () => {
+      const sensor = createMockChild({ id: 's1', softwareType: 'measurement', category: 'sensor' });
+      const analyser = createMockChild({ id: 'a1', softwareType: 'measurement', category: 'analyser' });
+
+      await utils.registerChild(sensor, POSITIONS.UPSTREAM);
+      await utils.registerChild(analyser, POSITIONS.DOWNSTREAM);
+
+      expect(parent.child.measurement.sensor).toHaveLength(1);
+      expect(parent.child.measurement.analyser).toHaveLength(1);
+    });
+
+    it('should support multiple parents on a child (array append)', async () => {
+      const parent2 = createMockParent();
+      const utils2 = new ChildRegistrationUtils(parent2);
+      const child = createMockChild();
+
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+      await utils2.registerChild(child, POSITIONS.DOWNSTREAM);
+
+      expect(child.parent).toEqual([parent, parent2]);
+    });
+  });
+
+  // ── Duplicate registration ───────────────────────────────────────────────
+  describe('duplicate registration', () => {
+    it('should overwrite the registry entry when the same child id is registered twice', async () => {
+      const child = createMockChild({ id: 'dup-1' });
+
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+      await utils.registerChild(child, POSITIONS.DOWNSTREAM);
+
+      // Map.set overwrites, so still size 1
+      expect(utils.registeredChildren.size).toBe(1);
+      const entry = utils.registeredChildren.get('dup-1');
+      expect(entry.position).toBe(POSITIONS.DOWNSTREAM);
+    });
+
+    it('should push the child into the category array again on duplicate registration', async () => {
+      const child = createMockChild({ id: 'dup-1' });
+
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+
+      // _storeChild does a push each time
+      expect(parent.child.measurement.sensor).toHaveLength(2);
+    });
+  });
+
+  // ── Measurement context setup ────────────────────────────────────────────
+  describe('measurement context on child', () => {
+    it('should call setChildId, setChildName, setParentRef when child has measurements', async () => {
+      const measurements = {
+        setChildId: jest.fn(),
+        setChildName: jest.fn(),
+        setParentRef: jest.fn(),
+      };
+      const child = createMockChild({ id: 'mc-1', name: 'Sensor1', measurements });
+
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+
+      expect(measurements.setChildId).toHaveBeenCalledWith('mc-1');
+      expect(measurements.setChildName).toHaveBeenCalledWith('Sensor1');
+      expect(measurements.setParentRef).toHaveBeenCalledWith(parent);
+    });
+
+    it('should skip measurement setup when child has no measurements object', async () => {
+      const child = createMockChild({ measurements: null });
+
+      // Should not throw
+      await expect(utils.registerChild(child, POSITIONS.UPSTREAM)).resolves.not.toThrow();
+    });
+  });
+
+  // ── getChildrenOfType ────────────────────────────────────────────────────
+  describe('getChildrenOfType()', () => {
+    beforeEach(async () => {
+      const s1 = createMockChild({ id: 's1', softwareType: 'measurement', category: 'sensor' });
+      const s2 = createMockChild({ id: 's2', softwareType: 'measurement', category: 'sensor' });
+      const a1 = createMockChild({ id: 'a1', softwareType: 'measurement', category: 'analyser' });
+      const m1 = createMockChild({ id: 'm1', softwareType: 'machine', category: 'pump' });
+
+      await utils.registerChild(s1, POSITIONS.UPSTREAM);
+      await utils.registerChild(s2, POSITIONS.DOWNSTREAM);
+      await utils.registerChild(a1, POSITIONS.UPSTREAM);
+      await utils.registerChild(m1, POSITIONS.AT_EQUIPMENT);
+    });
+
+    it('should return all children of a given softwareType', () => {
+      const measurements = utils.getChildrenOfType('measurement');
+      expect(measurements).toHaveLength(3);
+    });
+
+    it('should return children filtered by category', () => {
+      const sensors = utils.getChildrenOfType('measurement', 'sensor');
+      expect(sensors).toHaveLength(2);
+    });
+
+    it('should return empty array for unknown softwareType', () => {
+      expect(utils.getChildrenOfType('nonexistent')).toEqual([]);
+    });
+
+    it('should return empty array for unknown category', () => {
+      expect(utils.getChildrenOfType('measurement', 'nonexistent')).toEqual([]);
+    });
+  });
+
+  // ── getChildById ─────────────────────────────────────────────────────────
+  describe('getChildById()', () => {
+    it('should return the child by its id', async () => {
+      const child = createMockChild({ id: 'find-me' });
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+
+      expect(utils.getChildById('find-me')).toBe(child);
+    });
+
+    it('should return null for unknown id', () => {
+      expect(utils.getChildById('does-not-exist')).toBeNull();
+    });
+  });
+
+  // ── getAllChildren ───────────────────────────────────────────────────────
+  describe('getAllChildren()', () => {
+    it('should return an empty array when no children registered', () => {
+      expect(utils.getAllChildren()).toEqual([]);
+    });
+
+    it('should return all registered child objects', async () => {
+      const c1 = createMockChild({ id: 'c1' });
+      const c2 = createMockChild({ id: 'c2' });
+      await utils.registerChild(c1, POSITIONS.UPSTREAM);
+      await utils.registerChild(c2, POSITIONS.DOWNSTREAM);
+
+      const all = utils.getAllChildren();
+      expect(all).toHaveLength(2);
+      expect(all).toContain(c1);
+      expect(all).toContain(c2);
+    });
+  });
+
+  // ── logChildStructure ───────────────────────────────────────────────────
+  describe('logChildStructure()', () => {
+    it('should log the child structure via debug', async () => {
+      const child = createMockChild({ id: 'log-1', name: 'LogChild' });
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+
+      utils.logChildStructure();
+
+      expect(parent.logger.debug).toHaveBeenCalledWith(
+        'Current child structure:',
+        expect.any(String)
+      );
+    });
+  });
+
+  // ── _storeChild (internal) ──────────────────────────────────────────────
+  describe('_storeChild() internal behaviour', () => {
+    it('should create the child object on parent if it does not exist', async () => {
+      delete parent.child;
+      const child = createMockChild();
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+
+      expect(parent.child).toBeDefined();
+      expect(parent.child.measurement.sensor).toContain(child);
+    });
+
+    it('should use "sensor" as default category when asset.category is absent', async () => {
+      const child = createMockChild();
+      // remove asset.category to trigger default
+      delete child.config.asset.category;
+      await utils.registerChild(child, POSITIONS.UPSTREAM);
+
+      expect(parent.child.measurement.sensor).toContain(child);
+    });
+  });
+});

test/config-manager.test.js

@@ -0,0 +1,33 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const ConfigManager = require('../src/configs/index.js');
+
+test('can read known config and report existence', () => {
+  const manager = new ConfigManager('.');
+  assert.equal(manager.hasConfig('measurement'), true);
+
+  const config = manager.getConfig('measurement');
+  assert.ok(config.functionality);
+  assert.ok(config.functionality.softwareType);
+});
+
+test('getAvailableConfigs includes known names', () => {
+  const manager = new ConfigManager('.');
+  const configs = manager.getAvailableConfigs();
+  assert.ok(configs.includes('measurement'));
+  assert.ok(configs.includes('rotatingMachine'));
+});
+
+test('createEndpoint creates executable JS payload shell', () => {
+  const manager = new ConfigManager('.');
+  const script = manager.createEndpoint('measurement');
+
+  assert.match(script, /window\.EVOLV\.nodes\.measurement/);
+  assert.match(script, /config loaded and endpoint created/);
+});
+
+test('getConfig throws on missing config', () => {
+  const manager = new ConfigManager('.');
+  assert.throws(() => manager.getConfig('definitely-not-real'), /Failed to load config/);
+});

test/config-utils.test.js

@@ -0,0 +1,51 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const ConfigUtils = require('../src/helper/configUtils.js');
+
+const defaultConfig = {
+  functionality: {
+    softwareType: {
+      default: 'measurement',
+      rules: { type: 'string' },
+    },
+  },
+  general: {
+    logging: {
+      enabled: { default: true, rules: { type: 'boolean' } },
+      logLevel: {
+        default: 'info',
+        rules: {
+          type: 'enum',
+          values: [{ value: 'debug' }, { value: 'info' }, { value: 'warn' }, { value: 'error' }],
+        },
+      },
+    },
+    name: { default: 'default-name', rules: { type: 'string' } },
+  },
+  scaling: {
+    absMin: { default: 0, rules: { type: 'number' } },
+    absMax: { default: 100, rules: { type: 'number' } },
+  },
+};
+
+test('initConfig applies defaults', () => {
+  const cfg = new ConfigUtils(defaultConfig, false, 'error');
+  const result = cfg.initConfig({});
+  assert.equal(result.general.name, 'default-name');
+  assert.equal(result.scaling.absMax, 100);
+});
+
+test('updateConfig merges nested overrides and revalidates', () => {
+  const cfg = new ConfigUtils(defaultConfig, false, 'error');
+  const base = cfg.initConfig({ general: { name: 'sensor-a' } });
+  const updated = cfg.updateConfig(base, { scaling: { absMax: 150 } });
+
+  assert.equal(updated.general.name, 'sensor-a');
+  assert.equal(updated.scaling.absMax, 150);
+});
+
+test('constructor respects explicit logger disabled flag', () => {
+  const cfg = new ConfigUtils(defaultConfig, false, 'error');
+  assert.equal(cfg.logger.logging, false);
+});

test/configManager.test.js

@@ -0,0 +1,217 @@
+const path = require('path');
+const ConfigManager = require('../src/configs/index');
+
+describe('ConfigManager', () => {
+  const configDir = path.resolve(__dirname, '../src/configs');
+  let cm;
+
+  beforeEach(() => {
+    cm = new ConfigManager(configDir);
+  });
+
+  // ── getConfig() ──────────────────────────────────────────────────────
+  describe('getConfig()', () => {
+    it('should load and parse a known JSON config file', () => {
+      const config = cm.getConfig('baseConfig');
+      expect(config).toBeDefined();
+      expect(typeof config).toBe('object');
+    });
+
+    it('should return the same content on successive calls', () => {
+      const a = cm.getConfig('baseConfig');
+      const b = cm.getConfig('baseConfig');
+      expect(a).toEqual(b);
+    });
+
+    it('should throw when the config file does not exist', () => {
+      expect(() => cm.getConfig('nonExistentConfig_xyz'))
+        .toThrow(/Failed to load config/);
+    });
+
+    it('should throw a descriptive message including the config name', () => {
+      expect(() => cm.getConfig('missing'))
+        .toThrow("Failed to load config 'missing'");
+    });
+  });
+
+  // ── hasConfig() ──────────────────────────────────────────────────────
+  describe('hasConfig()', () => {
+    it('should return true for a config that exists', () => {
+      expect(cm.hasConfig('baseConfig')).toBe(true);
+    });
+
+    it('should return false for a config that does not exist', () => {
+      expect(cm.hasConfig('doesNotExist_abc')).toBe(false);
+    });
+  });
+
+  // ── getAvailableConfigs() ────────────────────────────────────────────
+  describe('getAvailableConfigs()', () => {
+    it('should return an array of strings', () => {
+      const configs = cm.getAvailableConfigs();
+      expect(Array.isArray(configs)).toBe(true);
+      configs.forEach(name => expect(typeof name).toBe('string'));
+    });
+
+    it('should include known config names without .json extension', () => {
+      const configs = cm.getAvailableConfigs();
+      expect(configs).toContain('baseConfig');
+      expect(configs).toContain('diffuser');
+      expect(configs).toContain('measurement');
+    });
+
+    it('should not include .json extension in returned names', () => {
+      const configs = cm.getAvailableConfigs();
+      configs.forEach(name => {
+        expect(name).not.toMatch(/\.json$/);
+      });
+    });
+
+    it('should throw when pointed at a non-existent directory', () => {
+      const bad = new ConfigManager('/tmp/nonexistent_dir_xyz_123');
+      expect(() => bad.getAvailableConfigs()).toThrow(/Failed to read config directory/);
+    });
+  });
+
+  // ── buildConfig() ────────────────────────────────────────────────────
+  describe('buildConfig()', () => {
+    it('should return an object with general and functionality sections', () => {
+      const uiConfig = { name: 'TestNode', unit: 'bar', enableLog: true, logLevel: 'debug' };
+      const result = cm.buildConfig('measurement', uiConfig, 'node-id-1');
+      expect(result).toHaveProperty('general');
+      expect(result).toHaveProperty('functionality');
+      expect(result).toHaveProperty('output');
+    });
+
+    it('should populate general.name from uiConfig.name', () => {
+      const uiConfig = { name: 'MySensor' };
+      const result = cm.buildConfig('measurement', uiConfig, 'id-1');
+      expect(result.general.name).toBe('MySensor');
+    });
+
+    it('should default general.name to nodeName when uiConfig.name is empty', () => {
+      const result = cm.buildConfig('measurement', {}, 'id-1');
+      expect(result.general.name).toBe('measurement');
+    });
+
+    it('should set general.id from the nodeId argument', () => {
+      const result = cm.buildConfig('valve', {}, 'node-42');
+      expect(result.general.id).toBe('node-42');
+    });
+
+    it('should default unit to unitless', () => {
+      const result = cm.buildConfig('valve', {}, 'id-1');
+      expect(result.general.unit).toBe('unitless');
+    });
+
+    it('should default logging.enabled to true when enableLog is undefined', () => {
+      const result = cm.buildConfig('valve', {}, 'id-1');
+      expect(result.general.logging.enabled).toBe(true);
+    });
+
+    it('should respect enableLog = false', () => {
+      const result = cm.buildConfig('valve', { enableLog: false }, 'id-1');
+      expect(result.general.logging.enabled).toBe(false);
+    });
+
+    it('should default logLevel to info', () => {
+      const result = cm.buildConfig('valve', {}, 'id-1');
+      expect(result.general.logging.logLevel).toBe('info');
+    });
+
+    it('should set functionality.softwareType to lowercase nodeName', () => {
+      const result = cm.buildConfig('Valve', {}, 'id-1');
+      expect(result.functionality.softwareType).toBe('valve');
+    });
+
+    it('should default positionVsParent to atEquipment', () => {
+      const result = cm.buildConfig('valve', {}, 'id-1');
+      expect(result.functionality.positionVsParent).toBe('atEquipment');
+    });
+
+    it('should set distance when hasDistance is true', () => {
+      const result = cm.buildConfig('valve', { hasDistance: true, distance: 5.5 }, 'id-1');
+      expect(result.functionality.distance).toBe(5.5);
+    });
+
+    it('should set distance to undefined when hasDistance is false', () => {
+      const result = cm.buildConfig('valve', { hasDistance: false, distance: 5.5 }, 'id-1');
+      expect(result.functionality.distance).toBeUndefined();
+    });
+
+    // ── asset section ──────────────────────────────────────────────────
+    it('should not include asset section when no asset fields provided', () => {
+      const result = cm.buildConfig('valve', {}, 'id-1');
+      expect(result.asset).toBeUndefined();
+    });
+
+    it('should include asset section when supplier is provided', () => {
+      const result = cm.buildConfig('valve', { supplier: 'Siemens' }, 'id-1');
+      expect(result.asset).toBeDefined();
+      expect(result.asset.supplier).toBe('Siemens');
+    });
+
+    it('should populate asset defaults for missing optional fields', () => {
+      const result = cm.buildConfig('valve', { supplier: 'ABB' }, 'id-1');
+      expect(result.asset.category).toBe('sensor');
+      expect(result.asset.type).toBe('Unknown');
+      expect(result.asset.model).toBe('Unknown');
+    });
+
+    // ── domainConfig merge ─────────────────────────────────────────────
+    it('should merge domainConfig sections into the result', () => {
+      const domain = { scaling: { enabled: true, factor: 2 } };
+      const result = cm.buildConfig('measurement', {}, 'id-1', domain);
+      expect(result.scaling).toEqual({ enabled: true, factor: 2 });
+    });
+
+    it('should handle empty domainConfig gracefully', () => {
+      const result = cm.buildConfig('measurement', {}, 'id-1', {});
+      expect(result).toHaveProperty('general');
+      expect(result).toHaveProperty('functionality');
+    });
+
+    it('should default output formats to process and influxdb', () => {
+      const result = cm.buildConfig('measurement', {}, 'id-1');
+      expect(result.output).toEqual({
+        process: 'process',
+        dbase: 'influxdb',
+      });
+    });
+
+    it('should allow output format overrides from ui config', () => {
+      const result = cm.buildConfig('measurement', {
+        processOutputFormat: 'json',
+        dbaseOutputFormat: 'csv',
+      }, 'id-1');
+      expect(result.output).toEqual({
+        process: 'json',
+        dbase: 'csv',
+      });
+    });
+  });
+
+  // ── createEndpoint() ─────────────────────────────────────────────────
+  describe('createEndpoint()', () => {
+    it('should return a JavaScript string containing the node name', () => {
+      const script = cm.createEndpoint('baseConfig');
+      expect(typeof script).toBe('string');
+      expect(script).toContain('baseConfig');
+      expect(script).toContain('window.EVOLV');
+    });
+
+    it('should throw for a non-existent config', () => {
+      expect(() => cm.createEndpoint('doesNotExist_xyz'))
+        .toThrow(/Failed to create endpoint/);
+    });
+  });
+
+  // ── getBaseConfig() ──────────────────────────────────────────────────
+  describe('getBaseConfig()', () => {
+    it('should load the baseConfig.json file', () => {
+      const base = cm.getBaseConfig();
+      expect(base).toBeDefined();
+      expect(typeof base).toBe('object');
+    });
+  });
+});

test/curve-loader.test.js

@@ -0,0 +1,13 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const { loadCurve } = require('../index.js');
+
+test('loadCurve resolves curve ids case-insensitively', () => {
+  const canonical = loadCurve('hidrostal-H05K-S03R');
+  const lowercase = loadCurve('hidrostal-h05k-s03r');
+
+  assert.ok(canonical);
+  assert.ok(lowercase);
+  assert.strictEqual(canonical, lowercase);
+});

test/endpoint-utils.test.js

@@ -0,0 +1,26 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const EndpointUtils = require('../src/helper/endpointUtils.js');
+
+test('generateMenuUtilsData returns helpers and compatibility options', () => {
+  const endpointUtils = new EndpointUtils();
+  const data = endpointUtils.generateMenuUtilsData('measurement', {
+    customCheck: 'function(value) { return !!value; }',
+  });
+
+  assert.equal(data.nodeName, 'measurement');
+  assert.equal(typeof data.helpers.validateRequired, 'string');
+  assert.equal(typeof data.helpers.customCheck, 'string');
+  assert.equal(data.options.autoLoadLegacy, true);
+});
+
+test('generateMenuUtilsBootstrap points to data and legacy endpoints', () => {
+  const endpointUtils = new EndpointUtils();
+  const script = endpointUtils.generateMenuUtilsBootstrap('measurement');
+
+  assert.match(script, /menuUtilsData\.json/);
+  assert.match(script, /menuUtils\.legacy\.js/);
+  assert.match(script, /window\.EVOLV\.nodes/);
+});
+

test/gravity.test.js

@@ -0,0 +1,21 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const gravity = require('../src/helper/gravity.js');
+
+test('standard gravity constant is available', () => {
+  assert.ok(Math.abs(gravity.getStandardGravity() - 9.80665) < 1e-9);
+});
+
+test('local gravity decreases with elevation', () => {
+  const seaLevel = gravity.getLocalGravity(45, 0);
+  const high = gravity.getLocalGravity(45, 1000);
+  assert.ok(high < seaLevel);
+});
+
+test('pressureHead and weightForce use local gravity', () => {
+  const dp = gravity.pressureHead(1000, 5, 45, 0);
+  const force = gravity.weightForce(2, 45, 0);
+  assert.ok(dp > 0);
+  assert.ok(force > 0);
+});

test/helpers.js

@@ -0,0 +1,24 @@
+const path = require('node:path');
+
+function makeLogger() {
+  return {
+    debug() {},
+    info() {},
+    warn() {},
+    error() {},
+  };
+}
+
+function near(actual, expected, epsilon = 1e-6) {
+  return Math.abs(actual - expected) <= epsilon;
+}
+
+function fixturePath(...segments) {
+  return path.join(__dirname, ...segments);
+}
+
+module.exports = {
+  makeLogger,
+  near,
+  fixturePath,
+};

test/logger.test.js

@@ -0,0 +1,65 @@
+const test = require('node:test');
+const assert = require('node:assert/strict');
+
+const Logger = require('../src/helper/logger.js');
+
+function withPatchedConsole(fn) {
+  const original = {
+    debug: console.debug,
+    info: console.info,
+    warn: console.warn,
+    error: console.error,
+  };
+
+  const calls = [];
+  console.debug = (...args) => calls.push(['debug', ...args]);
+  console.info = (...args) => calls.push(['info', ...args]);
+  console.warn = (...args) => calls.push(['warn', ...args]);
+  console.error = (...args) => calls.push(['error', ...args]);
+
+  try {
+    fn(calls);
+  } finally {
+    console.debug = original.debug;
+    console.info = original.info;
+    console.warn = original.warn;
+    console.error = original.error;
+  }
+}
+
+test('respects log level threshold', () => {
+  withPatchedConsole((calls) => {
+    const logger = new Logger(true, 'warn', 'T');
+    logger.debug('a');
+    logger.info('b');
+    logger.warn('c');
+    logger.error('d');
+
+    const levels = calls.map((c) => c[0]);
+    assert.deepEqual(levels, ['warn', 'error']);
+  });
+});
+
+test('toggleLogging disables output', () => {
+  withPatchedConsole((calls) => {
+    const logger = new Logger(true, 'debug', 'T');
+    logger.toggleLogging();
+    logger.debug('x');
+    logger.error('y');
+    assert.equal(calls.length, 0);
+  });
+});
+
+test('setLogLevel updates to valid level', () => {
+  const logger = new Logger(true, 'debug', 'T');
+  logger.setLogLevel('error');
+  assert.equal(logger.logLevel, 'error');
+});
+
+test('setLogLevel with invalid value should not throw', () => {
+  withPatchedConsole(() => {
+    const logger = new Logger(true, 'debug', 'T');
+    assert.doesNotThrow(() => logger.setLogLevel('invalid-level'));
+    assert.equal(logger.logLevel, 'debug');
+  });
+});