import { DEFAULT_GLOBAL_SETTINGS } from '../constants/global-settings.js';
import { matchIntroductionDuration, matchIntroductionMessage } from '../src/shared/match-introduction.js';
import assert from 'node:assert/strict';
import test from 'node:test';
import type { GameApi } from '../src/client/api.js';
import { createLobbyFeatures } from '../src/client/lobby-features.js';
import { normalizeAppearance, type FighterAppearance } from '../src/shared/cosmetics.js';
import type { PlayerProfile } from '../src/shared/ranked-types.js';
import { createMatchEngine } from '../src/shared/match-engine.js';
import { RANKED_POLL_MS } from '../constants/ranked.js';

// A selector/event surface, not an HTML parser or rendering implementation.
// The test invokes the production selection/equip handlers and observes the
// appearance callback used by main.ts to display the equipped character.
function documentSurface() {
  const ids = new Map<string, Element>();
  class Element {
    nodes = new Map<string, Element>();
    listeners = new Map<string, (event: any) => void>();
    classList = { remove() {} };
    disabled = false; textContent = ''; innerHTML = ''; value = '';
    onclick?: () => void | Promise<void>;
    set id(id: string) { ids.set(id, this); }
    querySelector(selector: string): Element {
      if (!this.nodes.has(selector)) this.nodes.set(selector, new Element());
      return this.nodes.get(selector)!;
    }
    addEventListener(name: string, listener: (event: any) => void) { this.listeners.set(name, listener); }
    open = false;
    prepend() {} after() {} append() {} setAttribute() {} focus() {}
    showModal() { this.open = true; } close() { this.open = false; }
  }
  const document = {
    body: new Element(), createElement: () => new Element(), querySelector: () => new Element(),
    getElementById(id: string) {
      if (!ids.has(id)) ids.set(id, new Element());
      return ids.get(id)!;
    },
  };
  return document;
}

test('first visit waits for a saved nickname and keeps the form open on rejection', async t => {
  const document = documentSurface(), original = Object.getOwnPropertyDescriptor(globalThis, 'document');
  Object.defineProperty(globalThis, 'document', { configurable: true, value: document });
  t.after(() => { if (original) Object.defineProperty(globalThis, 'document', original); else Reflect.deleteProperty(globalThis, 'document'); });
  const profile: PlayerProfile = { playerId: 'a', displayName: '', nameTag: 1, appearance: normalizeAppearance(undefined),
    stats: { wins: 0, losses: 0, draws: 0, current: 0, best: 0 }, unlockedColors: ['white'], unlockedEquipment: [] };
  let writes = 0, initialized = false, rejectSave = true;
  const api = { async request(_path: string, method?: string, body?: { displayName: string }) {
    if (method === 'POST') {
      writes++;
      if (rejectSave) throw new Error('저장 실패');
      return { ...profile, displayName: body!.displayName };
    }
    return profile;
  } } as unknown as GameApi;
  const lobby = createLobbyFeatures({ api, onQueue() {}, onMatch() {}, onHome() {}, onAppearance() {}, onAvailabilityChange() {}, onError(error) { throw error; } });
  const loading = lobby.initialize(false).then(() => { initialized = true; });
  await Promise.resolve();
  const dialog = document.getElementById('nickname-dialog');
  assert.equal(dialog.open, true); assert.equal(initialized, false);
  let prevented = false;
  dialog.listeners.get('cancel')!({ preventDefault() { prevented = true; } });
  assert.equal(prevented, true);
  const submit = () => dialog.querySelector('form').listeners.get('submit')!({ preventDefault() {} });
  dialog.querySelector('input').value = '씨 발'; await submit();
  assert.equal(writes, 0); assert.equal(dialog.open, true);
  dialog.querySelector('input').value = '손오공'; await submit();
  assert.equal(initialized, false); assert.equal(dialog.querySelector('p').textContent, '저장 실패');
  rejectSave = false; await submit(); await loading;
  assert.equal(initialized, true); assert.equal(dialog.open, false);
  assert.equal(document.getElementById('profile-name').textContent, '손오공#0001');
  await document.getElementById('nickname-open').onclick!();
  assert.equal(dialog.querySelector('input').value, '손오공', 'the tag is not part of the editable nickname');
  dialog.querySelector('input').value = '베지터'; await submit();
  assert.equal(document.getElementById('profile-name').textContent, '베지터#0001');
});

test('ranked confirmation shows accept, waits for opponent and cancels by offer id', async t => {
  const document = documentSurface(), original = Object.getOwnPropertyDescriptor(globalThis, 'document');
  Object.defineProperty(globalThis, 'document', { configurable: true, value: document });
  t.after(() => { if (original) Object.defineProperty(globalThis, 'document', original); else Reflect.deleteProperty(globalThis, 'document'); });
  t.mock.timers.enable({ apis: ['setTimeout'] });
  const profile: PlayerProfile = { playerId: 'a', displayName: 'A', nameTag: 1, appearance: normalizeAppearance(undefined),
    stats: { wins: 0, losses: 0, draws: 0, current: 0, best: 0 }, unlockedColors: ['white'], unlockedEquipment: [] };
  let accepted = false, screen = '', cancelBody: unknown;
  const api = { async request(path: string, method?: string, body?: unknown) {
    if (path === '/api/ranked/accept') { assert.deepEqual(body, { matchId: 'offer-a' }); accepted = true; }
    if (path === '/api/ranked/cancel') { cancelBody = body; return { status: 'idle', profile }; }
    return { status: 'confirming', profile, offer: { matchId: 'offer-a', expiresAt: 10000, serverNow: 0, accepted } };
  } } as unknown as GameApi;
  const lobby = createLobbyFeatures({ api, onQueue(message) { screen = message; }, onMatch() { assert.fail('must wait for both accepts'); },
    onHome() { screen = 'home'; }, onAppearance() {}, onAvailabilityChange() {}, onError(error) { throw error; } });
  await lobby.initialize(true);
  assert.equal(screen, '매칭 성공!');
  const accept = document.getElementById('ranked-accept');
  assert.equal(accept.disabled, false);
  await accept.onclick!();
  assert.equal(accept.disabled, true);
  assert.equal(document.getElementById('ranked-queue').querySelector('.accept-status').textContent, '상대 수락 대기');
  await lobby.leave();
  assert.deepEqual(cancelBody, { matchId: 'offer-a' });
  assert.equal(screen, 'home');
});

test('a delayed accept response cannot overwrite a restored newer offer', async t => {
  const document = documentSurface(), original = Object.getOwnPropertyDescriptor(globalThis, 'document');
  Object.defineProperty(globalThis, 'document', { configurable: true, value: document });
  t.after(() => { if (original) Object.defineProperty(globalThis, 'document', original); else Reflect.deleteProperty(globalThis, 'document'); });
  t.mock.timers.enable({ apis: ['setTimeout'] });
  const profile: PlayerProfile = { playerId: 'a', displayName: 'A', nameTag: 1, appearance: normalizeAppearance(undefined),
    stats: { wins: 0, losses: 0, draws: 0, current: 0, best: 0 }, unlockedColors: ['white'], unlockedEquipment: [] };
  let currentId = 'old', finishAccept!: (value: unknown) => void;
  const pendingAccept = new Promise(resolve => { finishAccept = resolve; });
  const status = (matchId: string, accepted = false) => ({ status: 'confirming', profile, offer: { matchId, accepted, expiresAt: 10000, serverNow: 0 } });
  const bodies: unknown[] = [];
  const api = { async request(path: string, method?: string, body?: unknown) {
    if (path === '/api/ranked/accept') return pendingAccept;
    if (path === '/api/ranked/cancel') { bodies.push(body); return { status: 'idle', profile }; }
    return status(currentId);
  } } as unknown as GameApi;
  const lobby = createLobbyFeatures({ api, onQueue() {}, onMatch() {}, onHome() {}, onAppearance() {}, onAvailabilityChange() {}, onError(error) { throw error; } });
  await lobby.initialize(true);
  const accepting = document.getElementById('ranked-accept').onclick!();
  currentId = 'new'; await lobby.initialize(true);
  finishAccept(status('old', true)); await accepting;
  assert.equal(document.getElementById('ranked-accept').disabled, false);
  await lobby.leave();
  assert.deepEqual(bodies, [{ matchId: 'new' }]);
});

test('an old confirmation poll cannot restore the prompt after accepting starts preparation', async t => {
  const document = documentSurface(), original = Object.getOwnPropertyDescriptor(globalThis, 'document');
  Object.defineProperty(globalThis, 'document', { configurable: true, value: document });
  t.after(() => { if (original) Object.defineProperty(globalThis, 'document', original); else Reflect.deleteProperty(globalThis, 'document'); });
  t.mock.timers.enable({ apis: ['setTimeout'] });
  const profile: PlayerProfile = { playerId: 'a', displayName: 'A', nameTag: 1, appearance: normalizeAppearance(undefined),
    stats: { wins: 0, losses: 0, draws: 0, current: 0, best: 0 }, unlockedColors: ['white'], unlockedEquipment: [] };
  const confirming = { status: 'confirming', profile, offer: { matchId: 'offer-a', expiresAt: 10000, serverNow: 0, accepted: false } };
  const engine = createMatchEngine({ matchId: 'offer-a', mode: 'friend', selfIndex: 0, clock: { now: () => 0 } });
  engine.start();
  let reads = 0, screen = '', finishPoll!: (value: unknown) => void;
  const oldPoll = new Promise(resolve => { finishPoll = resolve; });
  const api = { async request(path: string) {
    if (path === '/api/ranked/accept') return { status: 'matched', profile, match: { ...engine.view(), ranked: true } };
    if (path === '/api/ranked/leave') return { status: 'idle', profile };
    return ++reads === 1 ? confirming : oldPoll;
  } } as unknown as GameApi;
  const lobby = createLobbyFeatures({ api, onQueue(message) { screen = message; }, onMatch() { screen = 'preparing'; },
    onHome() { screen = 'home'; }, onAppearance() {}, onAvailabilityChange() {}, onError(error) { throw error; } });
  await lobby.initialize(true);
  t.mock.timers.tick(RANKED_POLL_MS);
  await document.getElementById('ranked-accept').onclick!();
  assert.equal(screen, 'preparing');
  finishPoll(confirming);
  for (let i = 0; i < 5; i++) await Promise.resolve();
  assert.equal(screen, 'preparing');
  await lobby.leave();
});

for (const initiallyQueued of [false, true]) test(`ranked introduction follows server countdown (queued: ${initiallyQueued})`, async t => {
  const document = documentSurface(), original = Object.getOwnPropertyDescriptor(globalThis, 'document');
  Object.defineProperty(globalThis, 'document', { configurable: true, value: document });
  t.after(() => {
    if (original) Object.defineProperty(globalThis, 'document', original);
    else Reflect.deleteProperty(globalThis, 'document');
  });
  t.mock.timers.enable({ apis: ['setTimeout'] });
  let now = 0;
  const engine = createMatchEngine({ matchId: 'ranked-intro', mode: 'friend', selfIndex: 0, clock: { now: () => now } });
  engine.start(matchIntroductionDuration(DEFAULT_GLOBAL_SETTINGS, true));
  const profile: PlayerProfile = {
    playerId: 'player-a', displayName: 'Alpha', nameTag: 1, appearance: normalizeAppearance(undefined),
    stats: { wins: 0, losses: 0, draws: 0, current: 0, best: 0 }, unlockedColors: ['white'], unlockedEquipment: [],
  };
  const screens: string[] = [];
  const api = { async request(path: string) {
    if (path === '/api/profile') return profile;
    if (path === '/api/ranked/cancel' || path === '/api/ranked/leave') return { status: 'idle', profile };
    if (initiallyQueued && path === '/api/ranked/queue') return { status: 'queued', profile };
    if (now >= engine.view().startsAt) engine.beginTurn();
    return { status: 'matched', profile, match: { ...engine.view(), ranked: true } };
  } } as unknown as GameApi;
  const lobby = createLobbyFeatures({ api, onQueue: message => screens.push(message),
    onMatch: state => screens.push(matchIntroductionMessage(state, state.clockNow) ?? state.phase), onHome: () => screens.push('home'),
    onAppearance() {}, onAvailabilityChange() {}, onError(error) { throw error; },
  });
  const flush = async () => { for (let i = 0; i < 5; i++) await Promise.resolve(); };
  const advance = async (ms: number) => {
    for (let elapsed = 0; elapsed < ms; elapsed += RANKED_POLL_MS) {
      now += RANKED_POLL_MS; t.mock.timers.tick(RANKED_POLL_MS); await flush();
    }
  };
  await lobby.initialize(false);
  document.getElementById('ranked-start').onclick!();
  assert.equal(screens.at(-1), '랭킹대전 매칭 중…', 'show search before the queue response');
  await flush();
  assert.equal(screens.includes('countdown'), false);
  await advance(DEFAULT_GLOBAL_SETTINGS.matchingDelayMs);
  assert.equal(screens.at(-1), '랭킹대전 매칭 성공!');
  await advance(DEFAULT_GLOBAL_SETTINGS.matchSuccessDelayMs);
  assert.equal(screens.at(-1), '랭킹대전 준비 중…');
  await advance(3000);
  assert.equal(screens.at(-1), 'selecting');
  assert.equal(engine.view().deadline - now, engine.view().settings!.turnDurationMs, 'retain the full first turn');
  await lobby.leave();
  const count = screens.length;
  await advance(1000);
  assert.equal(screens.length, count, 'leaving stops presentation updates');
});

test('a profile read started before equip cannot undo the saved appearance', async t => {
  const document = documentSurface(), original = Object.getOwnPropertyDescriptor(globalThis, 'document');
  Object.defineProperty(globalThis, 'document', { configurable: true, value: document });
  t.after(() => {
    if (original) Object.defineProperty(globalThis, 'document', original);
    else Reflect.deleteProperty(globalThis, 'document');
  });
  const profile = (skinTone: 'light' | 'tan'): PlayerProfile => ({
    playerId: 'player-a', displayName: 'Alpha', nameTag: 1, appearance: normalizeAppearance({ characterId: 0, skinTone, colorId: 'white' }),
    stats: { wins: 0, losses: 0, draws: 0, current: 0, best: 0 }, unlockedColors: ['white'], unlockedEquipment: [],
  });
  let finishOldRead!: (value: PlayerProfile) => void;
  const oldRead = new Promise<PlayerProfile>(resolve => { finishOldRead = resolve; });
  let reads = 0, savedAppearance: FighterAppearance | undefined;
  const appearances: FighterAppearance[] = [];
  let savedDisplayed!: () => void;
  const displayed = new Promise<void>(resolve => { savedDisplayed = resolve; });
  const api = { async request(path: string, method?: string, body?: { appearance: FighterAppearance }) {
    assert.equal(path, '/api/profile');
    if (method === 'POST') {
      savedAppearance = body!.appearance;
      return { ...profile('light'), appearance: normalizeAppearance(savedAppearance) };
    }
    return ++reads === 1 ? profile('light') : oldRead;
  } } as unknown as GameApi;
  const lobby = createLobbyFeatures({ api, onQueue() {}, onMatch() {}, onHome() {}, onAvailabilityChange() {},
    onError(error) { throw error; },
    onAppearance(appearance) {
      appearances.push(appearance);
      if (appearance.skinTone === 'tan') savedDisplayed();
    },
  });
  await lobby.initialize(false);
  const opening = document.getElementById('appearance-open').onclick!();
  const dialog = document.getElementById('appearance-dialog');
  dialog.querySelector('.skin-options').listeners.get('click')!({
    target: { closest: () => ({ dataset: { skin: 'tan' } }) },
  });
  const equip = dialog.querySelector('.equip');
  assert.equal(equip.disabled, false);
  equip.onclick!();
  await displayed;
  assert.deepEqual(savedAppearance, normalizeAppearance({ characterId: 0, skinTone: 'tan', colorId: 'white' }));
  finishOldRead(profile('light'));
  await opening;
  assert.deepEqual(appearances.at(-1), savedAppearance, 'the late GET must not revert the displayed equipment');
  assert.equal(equip.disabled, true, 'the saved preview must still be equipped');
});

for (const editedDuringLoad of [false, true]) {
  test(editedDuringLoad
    ? 'refresh preserves hair edits made while the profile is loading'
    : 'refresh replaces an untouched preview with equipment saved in another tab', async t => {
    const document = documentSurface(), original = Object.getOwnPropertyDescriptor(globalThis, 'document');
    Object.defineProperty(globalThis, 'document', { configurable: true, value: document });
    t.after(() => {
      if (original) Object.defineProperty(globalThis, 'document', original);
      else Reflect.deleteProperty(globalThis, 'document');
    });
    const cached = normalizeAppearance({ characterId: 0, colorId: 'white' });
    const remote = normalizeAppearance({ characterId: 1, colorId: 'white', equipment: ['shoes'] });
    const profile = (appearance: FighterAppearance): PlayerProfile => ({
      playerId: 'player-a', displayName: 'Alpha', nameTag: 1, appearance,
      stats: { wins: 5, losses: 0, draws: 0, current: 5, best: 5 },
      unlockedColors: ['white'], unlockedEquipment: ['shoes', 'wristbands'],
    });
    let finishRead!: (profile: PlayerProfile) => void;
    const pendingRead = new Promise<PlayerProfile>(resolve => { finishRead = resolve; });
    let reads = 0, savedAppearance: FighterAppearance | undefined;
    let savedDisplayed!: () => void;
    const displayed = new Promise<void>(resolve => { savedDisplayed = resolve; });
    const api = { async request(path: string, method?: string, body?: { appearance: FighterAppearance }) {
      assert.equal(path, '/api/profile');
      if (method === 'POST') { savedAppearance = body!.appearance; return profile(savedAppearance); }
      return ++reads === 1 ? profile(cached) : pendingRead;
    } } as unknown as GameApi;
    const lobby = createLobbyFeatures({ api, onQueue() {}, onMatch() {}, onHome() {}, onAvailabilityChange() {},
      onError(error) { throw error; }, onAppearance() { if (savedAppearance) savedDisplayed(); },
    });
    await lobby.initialize(false);
    const opening = document.getElementById('appearance-open').onclick!();
    const dialog = document.getElementById('appearance-dialog');
    const chooseBald = () => dialog.querySelector('.hair-options').listeners.get('click')!({
      target: { closest: () => ({ dataset: { hair: 'bald' } }) },
    });
    if (editedDuringLoad) chooseBald();
    finishRead(profile(remote));
    await opening;
    const equip = dialog.querySelector('.equip');
    assert.equal(equip.disabled, !editedDuringLoad, 'an untouched refreshed preview is already equipped');
    if (!editedDuringLoad) chooseBald();
    assert.equal(equip.disabled, false);
    equip.onclick!();
    await displayed;
    assert.deepEqual(savedAppearance, editedDuringLoad
      ? normalizeAppearance({ characterId: 0, colorId: 'white', hairStyle: 'bald', equipment: [] })
      : normalizeAppearance({ characterId: 1, colorId: 'white', hairStyle: 'bald', equipment: ['shoes'] }));
  });
}