import { albumTracks, fakeApi, makeUser } from './fakeApi';
import { mobileFixtures } from './mobileFixtures';

/** Подменяет fetch на фейковый API. Включается только при сборке с VITE_E2E=1. */
export function installE2EFetch() {
  const api = fakeApi([
    makeUser('admin', 'admin', { must_change_credentials: true }),
    makeUser('alice', 'user'),
    makeUser('update-manager', 'user', { manages_updates: true }),
    makeUser('mobile-admin', 'admin', { reviews_uploads: true }),
    makeUser('moderator', 'moderator', { reviews_uploads: true }),
  ]);
  // A ready conversation lets browser tests exercise messages and music sharing.
  const alice = [...api.users.values()].find(u => u.username === 'alice')!;
  const friend = [...api.users.values()].find(u => u.username === 'moderator')!;
  api.friendships.set([alice.id, friend.id].sort().join(':'), { sender: friend.id, accepted: true });
  const listeningScenario = localStorage.getItem('pipu.e2e.listening');
  if (listeningScenario) {
    const device = crypto.randomUUID();
    api.presence.set(friend.id, Date.now());
    api.activityVisibility.set(friend.id, 'friends');
    api.activity.set(friend.id, { device_id: device, track_id: albumTracks[0]!.id, track_title: albumTracks[0]!.title, artist: 'Кино', context: 'other', position_ms: 0 });
    api.listeningPreferences.set(friend.id, { requests: listeningScenario === 'restricted' ? 'nobody' : 'friends', auto_accept: listeningScenario === 'automatic' ? 'friends' : 'nobody', autoplay: true });
    if (listeningScenario === 'incoming') {
      const roomId = crypto.randomUUID();
      const requestId = crypto.randomUUID();
      api.listeningRooms.set(roomId, { id: roomId, owner_id: friend.id, owner_name: friend.username, device_id: device, track_id: albumTracks[0]!.id, position_ms: 0, playing: false, updated_at: new Date().toISOString(), participants: [] });
      api.listeningMembers.set(friend.id, roomId);
      api.listeningRequests.set(requestId, { id: requestId, owner_id: friend.id, guest_id: alice.id, sender_id: friend.id, sender_name: friend.username, recipient_id: alice.id, kind: 'invite', expires_at: new Date(Date.now() + 120_000).toISOString() });
    }
  }
  if (localStorage.getItem('pipu.e2e.notifications') === '1') {
    const kinds = ['message', 'friend_request', 'friend_accepted', 'music'] as const;
    for (let index = 0; index < 28; index++) api.notifications.push({
      id: `event-${index}`, recipient: alice.id, actor_id: friend.id,
      actor_name: index % 3 === 0 ? 'JoyRacoon' : index % 3 === 1 ? 'Александра' : 'Константин',
      kind: kinds[index % kinds.length]!, created_at: new Date(Date.now() - index * 36e5).toISOString(), read: index >= 4,
    });
  }
  const orig = window.fetch.bind(window);
  window.fetch = async (input, init) => {
    const req = new Request(input, init);
    const path = new URL(req.url, window.location.origin).pathname;
    if (req.method === 'GET' && path in mobileFixtures) {
      return new Response(JSON.stringify(mobileFixtures[path]), { headers: { 'Content-Type': 'application/json' } });
    }
    if (new URL(req.url, window.location.origin).pathname.startsWith('/api/')) return api.fetch(req);
    return orig(input, init);
  };
}