import { test } from 'node:test';
import assert from 'node:assert/strict';
import { TimeController } from '../src/ui/timeController.ts';

class Field extends EventTarget {
  value = '';
  max = '';
  step = '';
  disabled = false;
  validity = { valid: true };
  attributes = new Map<string, string>();
  textContent = '';
  setAttribute(name: string, value: string) { this.attributes.set(name, value); }
  matches() { return this.disabled; }
  closest() { return this; }
}

test('live ticks preserve date edits; custom freezes; live and visibility resync wall clock', (t) => {
  const fields = new Map(['#date', '#date-display', '#time-slider', '#time-output', '#live-button'].map(id => [id, new Field()]));
  let dialogOpen = false;
  const doc = Object.assign(new EventTarget(), {
    activeElement: null as Field | null,
    querySelector: (id: string) => id === 'dialog[open]' ? (dialogOpen ? {} : null) : fields.get(id),
  });
  const originalDocument = Object.getOwnPropertyDescriptor(globalThis, 'document');
  const originalWindow = Object.getOwnPropertyDescriptor(globalThis, 'window');
  Object.defineProperty(globalThis, 'document', { configurable: true, value: doc });
  Object.defineProperty(globalThis, 'window', { configurable: true, value: new EventTarget() });
  t.mock.timers.enable({ apis: ['Date', 'setInterval'], now: Date.parse('2026-10-29T00:00:00Z') });
  const calls: { date: Date; mode: string }[] = [];
  const controller = new TimeController((date, mode) => calls.push({ date, mode }));
  assert.equal(fields.get('#live-button')!.attributes.get('aria-pressed'), 'true');
  assert.equal(fields.get('#date-display')!.textContent, '2026년 10월 29일');
  const arrow = (key: string) => {
    const event = Object.assign(new Event('keydown', { cancelable: true }), { key });
    window.dispatchEvent(event);
    return event;
  };
  assert.equal(arrow('ArrowRight').defaultPrevented, true);
  assert.equal(fields.get('#time-output')!.value, '09:00:10');
  assert.equal(controller.mode, 'CUSTOM');
  assert.equal(fields.get('#live-button')!.attributes.get('aria-pressed'), 'false');
  arrow('ArrowLeft');
  assert.equal(fields.get('#time-output')!.value, '09:00:00');
  dialogOpen = true;
  assert.equal(arrow('ArrowRight').defaultPrevented, false);
  assert.equal(fields.get('#time-output')!.value, '09:00:00');
  dialogOpen = false;
  doc.activeElement = fields.get('#time-slider')!;
  assert.equal(arrow('ArrowRight').defaultPrevented, false, 'focused slider keeps its native keyboard handling');
  doc.activeElement = null;
  fields.get('#live-button')!.dispatchEvent(new Event('click'));
  t.after(() => {
    controller.dispose();
    for (const [key, descriptor] of [['document', originalDocument], ['window', originalWindow]] as const) {
      if (descriptor) Object.defineProperty(globalThis, key, descriptor);
      else Reflect.deleteProperty(globalThis, key);
    }
  });
  const date = fields.get('#date')!;
  doc.activeElement = date;
  assert.equal(arrow('ArrowRight').defaultPrevented, false, 'date editing keeps its native keyboard handling');
  date.value = '';
  t.mock.timers.tick(1000);
  assert.equal(date.value, '', 'live refresh must not overwrite an unfinished date edit');
  date.value = '2026-12-21';
  fields.get('#time-slider')!.value = '28810';
  date.dispatchEvent(new Event('change'));
  assert.equal(calls.at(-1)!.mode, 'CUSTOM');
  assert.equal(calls.at(-1)!.date.toISOString(), '2026-12-20T23:00:10.000Z');
  assert.equal(fields.get('#time-output')!.value, '08:00:10');
  assert.equal(fields.get('#date-display')!.textContent, '2026년 12월 21일');
  assert.equal(fields.get('#live-button')!.attributes.get('aria-pressed'), 'false');
  assert.equal(fields.get('#time-slider')!.step, '10');
  fields.get('#time-slider')!.value = '86390';
  fields.get('#time-slider')!.dispatchEvent(new Event('input'));
  assert.equal(calls.at(-1)!.date.toISOString(), '2026-12-21T14:59:50.000Z');
  assert.equal(fields.get('#time-output')!.value, '23:59:50');
  assert.equal(fields.get('#live-button')!.attributes.get('aria-pressed'), 'false');
  const count = calls.length;
  t.mock.timers.tick(3000);
  doc.dispatchEvent(new Event('visibilitychange'));
  assert.equal(calls.length, count);
  doc.activeElement = null;
  fields.get('#live-button')!.dispatchEvent(new Event('click'));
  assert.equal(calls.at(-1)!.mode, 'LIVE');
  assert.equal(fields.get('#live-button')!.attributes.get('aria-pressed'), 'true');
  assert.equal(calls.at(-1)!.date.getTime(), Date.now());
  t.mock.timers.setTime(Date.parse('2026-10-30T00:00:00Z'));
  doc.dispatchEvent(new Event('visibilitychange'));
  assert.equal(date.value, '2026-10-30');
  const serverDate = new Date('2026-11-01T21:00:00Z');
  controller.setSharedClock(() => serverDate);
  assert.equal(fields.get('#date')!.disabled, true);
  assert.equal(calls.at(-1)!.date.getTime(), +serverDate);
  doc.activeElement = null;
  assert.equal(arrow('ArrowRight').defaultPrevented, false);
  assert.equal(calls.at(-1)!.date.getTime(), +serverDate, 'arrows cannot change shared time');
  date.value = '2027-01-01';
  date.dispatchEvent(new Event('change'));
  assert.equal(controller.mode, 'LIVE', 'programmatic events cannot change shared time');
  controller.setSharedClock(null);
  assert.equal(fields.get('#date')!.disabled, false);
  date.value = '2027-01-01';
  date.dispatchEvent(new Event('change'));
  assert.equal(controller.mode, 'CUSTOM');
});