'use strict';

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

const DashboardApi = require('../../src/specificClass.js');

test('rotatingMachine template panels declare meta.emittedFields', () => {
  const api = new DashboardApi({});
  const dash = api.loadTemplate('machine');
  assert.ok(dash, 'template loaded');
  const withFields = dash.panels.filter((p) => p?.meta?.emittedFields);
  // 13 non-row panels in machine.json get annotated; row panels are skipped.
  assert.ok(withFields.length >= 10, `expected ≥10 annotated panels, got ${withFields.length}`);
});

test('collectEmittedFields aggregates fields across panels', () => {
  const api = new DashboardApi({});
  const dash = api.loadTemplate('machine');
  const fields = api.collectEmittedFields(dash);
  assert.ok(fields.has('ctrl'), 'ctrl field declared by Ctrl % panel');
  assert.ok(fields.has('flow'), 'flow field declared by Flow panel');
  assert.ok(fields.has('efficiency'), 'efficiency field declared by Efficiency panel');
  assert.ok(fields.has('relDistFromPeak'), 'relDistFromPeak declared by Distance from Peak panel');
});

test('collectEmittedFields returns empty Set for template without meta', () => {
  const api = new DashboardApi({});
  // measurement.json has no emittedFields metadata yet — its panels predate the annotation.
  const dash = api.loadTemplate('measurement');
  const fields = api.collectEmittedFields(dash);
  assert.equal(fields.size, 0);
});

test('collectEmittedFields handles null/empty dashboard input gracefully', () => {
  const api = new DashboardApi({});
  assert.equal(api.collectEmittedFields(null).size, 0);
  assert.equal(api.collectEmittedFields({}).size, 0);
  assert.equal(api.collectEmittedFields({ panels: [] }).size, 0);
});