#!/usr/bin/env node
/**
 * Verify asset selection fields are correct in deployed flow.
 * Checks that supplier/assetType/model/unit values match asset data IDs
 * so the editor dropdowns will pre-select correctly.
 */

const http = require('http');

const NR_URL = 'http://localhost:1880';

async function fetchJSON(url) {
  return new Promise((resolve, reject) => {
    http.get(url, res => {
      const chunks = [];
      res.on('data', c => chunks.push(c));
      res.on('end', () => {
        try { resolve(JSON.parse(Buffer.concat(chunks))); }
        catch (e) { reject(new Error(`Parse error: ${e.message}`)); }
      });
    }).on('error', reject);
  });
}

(async () => {
  const flows = await fetchJSON(`${NR_URL}/flows`);
  const errors = [];

  console.log('=== Pump Asset Selection Checks ===');
  const pumps = flows.filter(n => n.type === 'rotatingMachine' && n.z === 'demo_tab_wwtp');
  pumps.forEach(p => {
    const checks = [
      { field: 'supplier', expected: 'hidrostal', actual: p.supplier },
      { field: 'assetType', expected: 'pump-centrifugal', actual: p.assetType },
      { field: 'category', expected: 'machine', actual: p.category },
    ];
    checks.forEach(c => {
      if (c.actual === c.expected) {
        console.log(`  PASS: ${p.id} ${c.field} = "${c.actual}"`);
      } else {
        console.log(`  FAIL: ${p.id} ${c.field} = "${c.actual}" (expected "${c.expected}")`);
        errors.push(`${p.id}.${c.field}`);
      }
    });
    // Model should be one of the known models
    const validModels = ['hidrostal-H05K-S03R', 'hidrostal-C5-D03R-SHN1'];
    if (validModels.includes(p.model)) {
      console.log(`  PASS: ${p.id} model = "${p.model}"`);
    } else {
      console.log(`  FAIL: ${p.id} model = "${p.model}" (expected one of ${validModels})`);
      errors.push(`${p.id}.model`);
    }
  });

  console.log('\n=== Measurement Asset Selection Checks ===');
  const measurements = flows.filter(n => n.type === 'measurement' && n.z === 'demo_tab_wwtp');

  // Valid supplier→type→model combinations from measurement.json
  const validSuppliers = {
    'Endress+Hauser': {
      types: ['flow', 'pressure', 'level'],
      models: { flow: ['Promag-W400', 'Promag-W300'], pressure: ['Cerabar-PMC51', 'Cerabar-PMC71'], level: ['Levelflex-FMP50'] }
    },
    'Hach': {
      types: ['dissolved-oxygen', 'ammonium', 'nitrate', 'tss'],
      models: { 'dissolved-oxygen': ['LDO2'], ammonium: ['Amtax-sc'], nitrate: ['Nitratax-sc'], tss: ['Solitax-sc'] }
    },
    'vega': {
      types: ['temperature', 'pressure', 'flow', 'level', 'oxygen'],
      models: {} // not checking Vega models for now
    }
  };

  measurements.forEach(m => {
    const supplierData = validSuppliers[m.supplier];
    if (!supplierData) {
      console.log(`  FAIL: ${m.id} supplier "${m.supplier}" not in asset data`);
      errors.push(`${m.id}.supplier`);
      return;
    }
    console.log(`  PASS: ${m.id} supplier = "${m.supplier}"`);

    if (!supplierData.types.includes(m.assetType)) {
      console.log(`  FAIL: ${m.id} assetType "${m.assetType}" not in ${m.supplier} types`);
      errors.push(`${m.id}.assetType`);
    } else {
      console.log(`  PASS: ${m.id} assetType = "${m.assetType}"`);
    }

    const validModels = supplierData.models[m.assetType] || [];
    if (validModels.length > 0 && !validModels.includes(m.model)) {
      console.log(`  FAIL: ${m.id} model "${m.model}" not in ${m.supplier}/${m.assetType} models`);
      errors.push(`${m.id}.model`);
    } else if (m.model) {
      console.log(`  PASS: ${m.id} model = "${m.model}"`);
    }
  });

  console.log('\n=== RESULT ===');
  if (errors.length === 0) {
    console.log('ALL ASSET SELECTION CHECKS PASSED');
  } else {
    console.log(`${errors.length} FAILURE(S):`, errors.join(', '));
    process.exit(1);
  }
})().catch(err => {
  console.error('Check failed:', err.message);
  process.exit(1);
});