import 'dart:typed_data';

import 'package:cardash_launcher/data/models/app_entry.dart';
import 'package:cardash_launcher/data/models/jellyfin_library.dart';
import 'package:cardash_launcher/data/models/jellyfin_models.dart';
import 'package:cardash_launcher/data/models/jellyfin_playback.dart';
import 'package:cardash_launcher/data/models/media_playback.dart';
import 'package:cardash_launcher/data/models/system_status.dart';
import 'package:cardash_launcher/data/models/update_info.dart';
import 'package:cardash_launcher/data/repositories/settings_repository.dart';
import 'package:cardash_launcher/data/services/jellyfin_library_service.dart';
import 'package:cardash_launcher/data/services/jellyfin_playback_platform.dart';
import 'package:cardash_launcher/data/services/jellyfin_service.dart';
import 'package:cardash_launcher/data/services/native_bridge.dart';
import 'package:cardash_launcher/data/services/secure_store.dart';
import 'package:cardash_launcher/features/settings/jellyfin_controller.dart';
import 'package:shared_preferences/shared_preferences.dart';

final testJellyfinConnection = JellyfinConnection(
  baseUrl: Uri.parse('https://jellyfin.example.com/'),
  accessToken: 'test-token',
  userId: 'user-1',
  deviceId: 'device-1',
  userName: 'wasp',
);

JellyfinAlbum album(String id, {String? imageTag, int? year}) {
  return JellyfinAlbum(
    id: id,
    name: 'Album $id',
    artist: 'Artist $id',
    imageTag: imageTag,
    year: year,
  );
}

JellyfinTrack track(
  String id, {
  String albumId = 'album-1',
  String albumName = 'Album 1',
  String artist = 'Artist 1',
  int index = 1,
  Duration duration = const Duration(minutes: 3),
  String? mediaSourceId,
  DateTime? lastPlayed,
}) {
  return JellyfinTrack(
    id: id,
    name: 'Track $id',
    albumId: albumId,
    album: albumName,
    artist: artist,
    indexNumber: index,
    parentIndexNumber: 1,
    duration: duration,
    mediaSourceId: mediaSourceId ?? 'source-$id',
    container: 'mp3',
    codec: 'mp3',
    lastPlayed: lastPlayed,
  );
}

class MemorySecureStore implements SecureStore {
  final values = <String, String>{};

  @override
  Future<String?> read(String key) async => values[key];

  @override
  Future<void> write(String key, String value) async {
    values[key] = value;
  }

  @override
  Future<void> delete(String key) async {
    values.remove(key);
  }
}

class FakeJellyfinGateway implements JellyfinGateway {
  @override
  Future<JellyfinServerInfo> serverInfo(Uri baseUrl) async {
    return const JellyfinServerInfo(name: 'Test server', version: '12.2.0');
  }

  @override
  Future<JellyfinQuickConnect> startQuickConnect(
    Uri baseUrl, {
    required String deviceId,
  }) async {
    return const JellyfinQuickConnect(code: '123456', secret: 'secret');
  }

  @override
  Future<bool> isQuickConnectApproved(Uri baseUrl, String secret) async {
    return false;
  }

  @override
  Future<JellyfinSession> authenticateQuickConnect(
    Uri baseUrl,
    String secret, {
    required String deviceId,
  }) async {
    return const JellyfinSession(
      accessToken: 'test-token',
      userId: 'user-1',
      userName: 'wasp',
    );
  }

  @override
  Future<JellyfinUser> currentUser(Uri baseUrl, String token) async {
    return const JellyfinUser(id: 'user-1', name: 'wasp');
  }

  @override
  void close() {}
}

class FakeSystemPlatform implements LauncherPlatform {
  @override
  Future<List<AppEntry>> listApps() async => const [];

  @override
  Future<void> launchApp({
    required String packageName,
    required String activityName,
  }) async {}

  @override
  Future<bool> isDefaultHome() async => true;

  @override
  Future<bool> requestDefaultHome() async => true;

  @override
  Future<SystemStatus> getStatus() async =>
      const SystemStatus(batteryLevel: 80, charging: false, wifi: true);

  @override
  Future<VolumeInfo> getVolume() async => const VolumeInfo(index: 5, max: 15);

  @override
  Future<void> setVolume(int index) async {}

  @override
  Future<bool> isMusicPlaying() async => false;

  @override
  Future<bool> sendMediaKey(String action) async => true;

  @override
  Future<MediaPlayback> getMediaState() async => const MediaPlayback();

  @override
  Future<bool> openNotificationAccessSettings() async => true;

  @override
  Future<void> setKeepScreenOn(bool enabled) async {}

  @override
  Future<bool> openUrl(String url) async => true;

  @override
  Future<UpdateInstallResult> downloadAndInstallUpdate(String url) async {
    return const UpdateInstallResult(started: false, permissionRequired: false);
  }
}

class FakeJellyfinLibraryGateway implements JellyfinLibraryGateway {
  List<JellyfinTrack> played = const [];
  List<JellyfinAlbum> added = const [];
  List<JellyfinAlbum> random = const [];
  List<JellyfinAlbum> favorites = const [];
  Map<String, List<JellyfinTrack>> tracks = const {};
  List<String> libraryIds = const ['library-1'];
  List<String> genres = const [];
  Uint8List? artwork;
  Object? error;
  Object? randomError;
  Object? favoriteError;
  bool albumFavorite = false;

  int playedCalls = 0;
  int addedCalls = 0;
  int randomCalls = 0;
  int genreCalls = 0;
  int trackCalls = 0;
  int artworkCalls = 0;
  int favoriteCalls = 0;
  int favoriteStateCalls = 0;
  int setFavoriteCalls = 0;
  List<String>? lastRandomGenres;
  String? lastAlbumId;
  bool? lastFavoriteValue;

  void resetCounters() {
    playedCalls = 0;
    addedCalls = 0;
    randomCalls = 0;
    genreCalls = 0;
    trackCalls = 0;
    artworkCalls = 0;
    favoriteCalls = 0;
    favoriteStateCalls = 0;
    setFavoriteCalls = 0;
  }

  @override
  Future<List<JellyfinTrack>> playedTracks(
    JellyfinConnection connection, {
    int limit = 50,
  }) async {
    playedCalls++;
    if (error != null) throw error!;
    return played.take(limit).toList(growable: false);
  }

  @override
  Future<List<JellyfinAlbum>> latestAddedAlbums(
    JellyfinConnection connection, {
    int limit = 5,
  }) async {
    addedCalls++;
    if (error != null) throw error!;
    return added.take(limit).toList(growable: false);
  }

  @override
  Future<List<JellyfinAlbum>> randomAlbums(
    JellyfinConnection connection, {
    required List<String> genres,
    int limit = 5,
  }) async {
    randomCalls++;
    lastRandomGenres = List<String>.from(genres);
    if (randomError != null) throw randomError!;
    return random.take(limit).toList(growable: false);
  }

  @override
  Future<List<JellyfinAlbum>> favoriteAlbums(
    JellyfinConnection connection,
  ) async {
    favoriteCalls++;
    if (favoriteError != null) throw favoriteError!;
    return favorites;
  }

  @override
  Future<bool> isAlbumFavorite(
    JellyfinConnection connection,
    String albumId,
  ) async {
    favoriteStateCalls++;
    if (favoriteError != null) throw favoriteError!;
    return albumFavorite || favorites.any((album) => album.id == albumId);
  }

  @override
  Future<void> setAlbumFavorite(
    JellyfinConnection connection,
    String albumId, {
    required bool favorite,
  }) async {
    setFavoriteCalls++;
    lastAlbumId = albumId;
    lastFavoriteValue = favorite;
    if (favoriteError != null) throw favoriteError!;
    albumFavorite = favorite;
    if (!favorite) {
      favorites = favorites
          .where((album) => album.id != albumId)
          .toList(growable: false);
    }
  }

  @override
  Future<List<JellyfinTrack>> albumTracks(
    JellyfinConnection connection,
    String albumId,
  ) async {
    trackCalls++;
    lastAlbumId = albumId;
    if (error != null) throw error!;
    return tracks[albumId] ?? const [];
  }

  @override
  Future<List<String>> musicLibraryIds(JellyfinConnection connection) async {
    return libraryIds;
  }

  @override
  Future<List<String>> genreNames(
    JellyfinConnection connection,
    String libraryId,
  ) async {
    genreCalls++;
    if (error != null) throw error!;
    return genres;
  }

  @override
  Future<Uint8List?> albumArtwork(
    JellyfinConnection connection,
    String albumId, {
    String? tag,
    int maxHeight = 400,
  }) async {
    artworkCalls++;
    return artwork;
  }
}

Future<JellyfinController> configuredJellyfinController({
  FakeJellyfinGateway? gateway,
  MemorySecureStore? store,
}) async {
  SharedPreferences.setMockInitialValues({
    'jellyfin.enabled': true,
    'jellyfin.serverUrl': 'https://jellyfin.example.com',
    'jellyfin.userId': 'user-1',
    'jellyfin.userName': 'wasp',
    'jellyfin.serverName': 'Test server',
  });
  final prefs = await SharedPreferences.getInstance();
  final settings = SettingsRepository(prefs);
  final secure = store ?? MemorySecureStore();
  secure.values[JellyfinController.tokenKey] = 'test-token';
  final controller = JellyfinController(
    settings,
    gateway ?? FakeJellyfinGateway(),
    secure,
  );
  await controller.initialize();
  return controller;
}

JellyfinLibraryService testLibraryService(
  JellyfinController controller,
  FakeJellyfinLibraryGateway gateway,
) {
  return JellyfinLibraryService(
    connectionProvider: () => controller.connection ?? testJellyfinConnection,
    gateway: gateway,
  );
}

class FakeJellyfinPlaybackPlatform implements JellyfinPlaybackPlatform {
  JellyfinPlaybackQueue? queue;
  JellyfinPlaybackSnapshot state = JellyfinPlaybackSnapshot.empty;
  final List<String> commands = [];
  int setQueueCalls = 0;
  bool setQueueResult = true;
  bool permissionGranted = false;
  bool zeroDuration = false;

  @override
  Future<bool> setQueue(JellyfinPlaybackQueue queue) async {
    commands.add('setQueue');
    setQueueCalls++;
    if (!setQueueResult) return false;
    this.queue = queue;
    state = snapshotAt(0, playing: true);
    return true;
  }

  JellyfinPlaybackSnapshot snapshotAt(
    int index, {
    bool playing = false,
    int positionMs = 0,
  }) {
    final current = queue;
    if (current == null || current.items.isEmpty) {
      return JellyfinPlaybackSnapshot.empty;
    }
    final safeIndex = index.clamp(0, current.items.length - 1);
    final item = current.items[safeIndex];
    return JellyfinPlaybackSnapshot(
      available: true,
      playing: playing,
      itemId: item.trackId,
      albumId: current.albumId,
      title: item.title,
      artist: item.artist,
      album: item.album,
      durationMs: zeroDuration ? 0 : item.durationMs,
      positionMs: positionMs,
      index: safeIndex,
      hasPrevious: safeIndex > 0,
      hasNext: safeIndex < current.items.length - 1,
    );
  }

  @override
  Future<bool> play() async {
    commands.add('play');
    state = state.copyWith(playing: true);
    return true;
  }

  @override
  Future<bool> pause() async {
    commands.add('pause');
    state = state.copyWith(playing: false);
    return true;
  }

  @override
  Future<bool> next() async {
    commands.add('next');
    final current = queue;
    if (current == null || !state.hasNext) return false;
    state = snapshotAt(state.index + 1, playing: state.playing, positionMs: 0);
    return true;
  }

  @override
  Future<bool> previous() async {
    commands.add('previous');
    if (!state.hasPrevious) return false;
    state = snapshotAt(state.index - 1, playing: state.playing, positionMs: 0);
    return true;
  }

  @override
  Future<bool> seekToIndex(int index) async {
    commands.add('seekToIndex:$index');
    final current = queue;
    if (current == null || index < 0 || index >= current.items.length) {
      return false;
    }
    state = snapshotAt(index, playing: state.playing, positionMs: 0);
    return true;
  }

  @override
  Future<bool> seek(Duration position) async {
    commands.add('seek:${position.inMilliseconds}');
    state = state.copyWith(positionMs: position.inMilliseconds);
    return true;
  }

  @override
  Future<bool> stop() async {
    commands.add('stop');
    state = JellyfinPlaybackSnapshot.empty;
    queue = null;
    return true;
  }

  @override
  Future<JellyfinPlaybackSnapshot> getState() async {
    commands.add('getState');
    return state;
  }

  @override
  Future<bool> notificationPermissionGranted() async => permissionGranted;

  @override
  Future<bool> requestNotificationPermission() async {
    permissionGranted = true;
    return true;
  }

  @override
  void dispose() {}
}