const REPO_ROOT = process.argv[2] || process.env.DC168_REPO || require('path').resolve(__dirname, '..', '..', '..');
// DC-168 widget smoke test: DOM shim, load calendar-widget.js, verify
// chip render states (empty vs events) and grid day-highlight mapping.
'use strict';
const fs = require('fs');

const elements = {};
function makeEl(id) {
  return elements[id] || (elements[id] = {
    textContent: '', innerHTML: '', value: '',
    style: { display: '' },
    listeners: {},
    addEventListener(ev, fn) { this.listeners[ev] = fn; },
    querySelector() { return null; },
    dataset: {},
  });
}
['.calendar-widget-icon', '.calendar-widget-text', 'calendar-widget',
 'cal-grid', 'cal-month-label', 'calendar-upcoming-list',
 'calendar-sources-list', 'calendar-modal', 'cal-add-test', 'cal-add-save',
 'cal-add-type', 'cal-add-name', 'cal-add-url', 'cal-add-user',
 'cal-add-pass', 'cal-add-status', 'cal-add-details', 'calendar-close',
 'cal-prev', 'cal-next'].forEach(makeEl);

global.document = {
  readyState: 'complete',
  querySelector(sel) { return makeEl(sel); },
  getElementById(id) { return elements[id] || null; },
  addEventListener() {},
  documentElement: { addEventListener() {} },
  createElement: () => makeEl('created-' + Math.random()),
  body: { appendChild() {} },
};
global.window = { CALENDAR: 300000 };
global.__logged = [];
global.ErrorHandler = function () { this.log = (e, tag) => { global.__logged.push(String(e && e.stack || e)); }; };
global.injectModal = () => {};
global.setInterval = () => {};
global.setTimeout = (f) => { f(); };
global.confirm = () => true;
global.alert = () => {};

let fetchBody = { events: [] };
global.fetch = async () => { console.log('[harness] fetch hit'); return { status: 200, ok: true, json: async () => { console.log('[harness] json ->', JSON.stringify(fetchBody).slice(0,60)); return fetchBody; } }; };

const src = fs.readFileSync(require('path').join(REPO_ROOT, 'status/js/calendar-widget.js'), 'utf8');
const realSetTimeout = global.setTimeout;
eval(src);
global.setTimeout = realSetTimeout;

(async () => {
  console.log('export present:', typeof global.window.refreshCalendarWidget);
  // 1) empty state — fresh cache via reload is impossible; instead assert the
  // empty-state string exists in source and simulate by direct render call is
  // not possible (internal). Use two-phase: first load with empty, then set
  // events and navigate (cache miss) to force refetch.
  fetchBody = { events: [] };
  await global.window.refreshCalendarWidget();
  const iconEl = elements['.calendar-widget-icon'];
  const textEl = elements['.calendar-widget-text'];
  if (textEl.innerHTML.includes('Calendar offline')) {
    console.log('WIDGET-ERROR:', global.__logged.join(' | ').slice(0, 800)); process.exit(1);
  }
  for (let i = 0; i < 20 && !textEl.innerHTML; i++) await new Promise(r => setTimeout(r, 25));
  if (!textEl.innerHTML.includes('No upcoming appointments')) {
    console.log('FAIL empty chip:', JSON.stringify(textEl.innerHTML), '| logged:', global.__logged.length, global.__logged.join(' || ').slice(0, 500)); process.exit(1);
  }
  // 2b) navigate next month → cache miss → refetch with the new events
  fetchBody = { events: [
    { title: 'Dental', start: '2026-12-27T22:00:00Z', allDay: false },
    { title: 'CT scan', start: '2026-12-20T20:30:00Z', allDay: false },
  ] };
  elements['cal-next'].listeners.click();
  await new Promise(r => setTimeout(r, 30));
  await global.window.refreshCalendarWidget();
  await new Promise(r => setTimeout(r, 25));
  if (!textEl.innerHTML.includes('CT scan')) { console.log('FAIL events chip after nav:', JSON.stringify(textEl.innerHTML)); process.exit(1); }

  // 3) grid renders with highlighted days (open modal path)
  const grid = elements['cal-grid'];
  if (typeof grid.innerHTML !== 'string') { console.log('FAIL grid missing'); process.exit(1); }
  // directly exercise renderGrid via the exported refresh + modal display path
  elements['calendar-modal'].style.display = 'flex';
  await global.window.refreshCalendarWidget();
  await new Promise(r => setTimeout(r, 25));
  if (!grid) { console.log('FAIL grid el missing'); process.exit(1); }
  const html = String(grid.innerHTML === undefined ? '' : grid.innerHTML);
  if (!html.includes('cal-day') || !html.includes('cal-dow')) { console.log('FAIL grid content', html.slice(0, 120)); process.exit(1); }
  // April 2026 grid is only rendered when viewMonth is April; default is the
  // current month — the grid must still contain the correct number of day cells
  const dayCells = (html.match(/cal-daynum/g) || []).length;
  if (dayCells < 28 || dayCells > 31) { console.log('FAIL day cells:', dayCells); process.exit(1); }
  console.log('DC168-SMOKE-OK: empty chip, events chip, grid render all pass');
})().catch(e => { console.log('FAIL', e.message, '\n', (e.stack||'').split('\n').slice(0,4).join('\n')); process.exit(1); });