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

const NodeClass = require('../../src/nodeClass');
const { makeNodeStub, makeREDStub } = require('../helpers/factories');

test('_attachInputHandler routes known topics to source methods', () => {
  const inst = Object.create(NodeClass.prototype);
  const node = makeNodeStub();
  const calls = [];

  inst.node = node;
  inst.RED = makeREDStub();
  inst.source = {
    toggleSimulation() { calls.push('simulator'); },
    toggleOutlierDetection() { calls.push('outlierDetection'); },
    calibrate() { calls.push('calibrate'); },
    set inputValue(v) { calls.push(['measurement', v]); },
  };

  inst._attachInputHandler();
  const onInput = node._handlers.input;

  onInput({ topic: 'simulator' }, () => {}, () => {});
  onInput({ topic: 'outlierDetection' }, () => {}, () => {});
  onInput({ topic: 'calibrate' }, () => {}, () => {});
  onInput({ topic: 'measurement', payload: 12.3 }, () => {}, () => {});

  assert.deepEqual(calls[0], 'simulator');
  assert.deepEqual(calls[1], 'outlierDetection');
  assert.deepEqual(calls[2], 'calibrate');
  assert.deepEqual(calls[3], ['measurement', 12.3]);
});

test('_registerChild emits delayed registerChild message on output 2', () => {
  const inst = Object.create(NodeClass.prototype);
  const node = makeNodeStub();

  inst.node = node;
  inst.config = { functionality: { positionVsParent: 'upstream', distance: 5 } };

  const originalSetTimeout = global.setTimeout;
  global.setTimeout = (fn) => { fn(); return 1; };
  try {
    inst._registerChild();
  } finally {
    global.setTimeout = originalSetTimeout;
  }

  assert.equal(node._sent.length, 1);
  assert.equal(node._sent[0][2].topic, 'registerChild');
  assert.equal(node._sent[0][2].positionVsParent, 'upstream');
  assert.equal(node._sent[0][2].distance, 5);
});