'use strict';

// Phase 10 rewrite: drives only the public BaseNodeAdapter surface.
// The pre-refactor _attachInputHandler private switch is gone — input
// dispatch goes through the commands registry that BaseNodeAdapter builds
// at construction. Tests fire msgs through `node.handlers.input` and
// observe via `node.sends`, `inst.source.engine.*`, and per-fire calls
// captured on a child stub registered through `RED.nodes.getNode(id)`.

const test = require('node:test');
const assert = require('node:assert/strict');

const nodeClass = require('../../src/nodeClass');
const { makeUiConfig } = require('../helpers/factories');

function makeNode(id = 'reactor-1') {
  const sends = [];
  const statuses = [];
  const handlers = {};
  return {
    id, sends, statuses, handlers,
    send(arr)  { sends.push(arr); },
    status(b)  { statuses.push(b); },
    on(ev, fn) { handlers[ev] = fn; },
    warn() {}, error() {},
  };
}

function makeRED(nodeMap = {}) {
  return { nodes: { getNode: (id) => nodeMap[id] || null } };
}

function closeNode(node) {
  if (node.handlers.close) node.handlers.close(() => {});
}

test('legacy alias topics drive engine setters and updateState', async () => {
  const childSource = {
    id: 'child-source-A',
    config: { general: { id: 'child-source-A' }, functionality: { softwareType: 'measurement', positionVsParent: 'upstream' }, asset: { type: 'temperature' } },
  };
  const node = makeNode();
  const RED = makeRED({ childA: { source: childSource } });
  const inst = new nodeClass(makeUiConfig(), RED, node, 'reactor');

  try {
    let doneCount = 0;
    const done = () => { doneCount += 1; };

    // data.clock alias → updateState(timestamp). Capture currentTime
    // before/after to verify the engine advanced.
    const t0 = inst.source.engine.currentTime;
    await node.handlers.input({ topic: 'clock', timestamp: t0 + 1 }, () => {}, done);

    // Fluent alias → engine setInfluent setter.
    await node.handlers.input(
      { topic: 'Fluent', payload: { inlet: 0, F: 7, C: [1,2,3,4,5,6,7,8,9,10,11,12,13] } },
      () => {}, done,
    );
    assert.equal(inst.source.engine.Fs[0], 7);
    assert.deepEqual(inst.source.engine.Cs_in[0], [1,2,3,4,5,6,7,8,9,10,11,12,13]);

    // OTR alias → engine setOTR setter.
    await node.handlers.input({ topic: 'OTR', payload: 3.5 }, () => {}, done);
    assert.equal(inst.source.engine.OTR, 3.5);

    // Temperature alias → engine setTemperature setter.
    await node.handlers.input({ topic: 'Temperature', payload: 18.2 }, () => {}, done);
    assert.equal(inst.source.engine.temperature, 18.2);

    // Dispersion alias — CSTR engine does not own a setDispersion setter
    // (only PFR does); the Reactor wrapper guards on engine type and the
    // dispatch should silently return without throwing.
    await node.handlers.input({ topic: 'Dispersion', payload: 0.2 }, () => {}, done);

    // registerChild alias → registers via childRegistrationUtils.
    // The handler resolves the child via RED.nodes.getNode(payload).source.
    await node.handlers.input(
      { topic: 'registerChild', payload: 'childA', positionVsParent: 'upstream' },
      () => {}, done,
    );

    assert.equal(doneCount, 6);
  } finally {
    closeNode(node);
  }
});

test('canonical topics are accepted (data.fluent, data.otr, data.temperature)', async () => {
  const node = makeNode();
  const inst = new nodeClass(makeUiConfig(), makeRED(), node, 'reactor');

  try {
    let done = 0;
    await node.handlers.input(
      { topic: 'data.fluent', payload: { inlet: 0, F: 11, C: [0,0,0,0,0,0,0,0,0,0,0,0,0] } },
      () => {}, () => { done += 1; },
    );
    assert.equal(inst.source.engine.Fs[0], 11);

    await node.handlers.input({ topic: 'data.otr', payload: 4.2 }, () => {}, () => { done += 1; });
    assert.equal(inst.source.engine.OTR, 4.2);

    await node.handlers.input({ topic: 'data.temperature', payload: 19.7 }, () => {}, () => { done += 1; });
    assert.equal(inst.source.engine.temperature, 19.7);

    assert.equal(done, 3);
  } finally {
    closeNode(node);
  }
});