// Author: fruit.com.cn

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

import 'core/config/locale_controller.dart';
import 'core/data/remote/api_client.dart';
import 'core/data/remote/auth_api.dart';
import 'core/data/remote/catalog_api.dart';
import 'core/data/remote/category_api.dart';
import 'core/data/remote/comment_api.dart';
import 'core/data/remote/download_api.dart';
import 'core/data/remote/interaction_api.dart';
import 'core/data/remote/library_api.dart';
import 'core/data/remote/playback_api.dart';
import 'core/data/remote/watch_api.dart';
import 'core/data/repositories/catalog_repository.dart';
import 'core/data/repositories/category_repository.dart';
import 'core/data/repositories/comment_repository.dart';
import 'core/data/repositories/download_repository.dart';
import 'core/data/repositories/favorite_repository.dart';
import 'core/data/repositories/interaction_repository.dart';
import 'core/data/repositories/playback_repository.dart';
import 'core/data/repositories/watch_history_repository.dart';
import 'core/data/services/auth_controller.dart';
import 'core/data/services/auth_session_store.dart';
import 'core/data/services/catalog_controller.dart';
import 'core/data/services/category_controller.dart';
import 'core/data/services/download_controller.dart';
import 'core/data/services/favorite_controller.dart';
import 'core/data/services/interaction_controller.dart';
import 'core/data/services/playback_session.dart';
import 'core/data/services/video_player_port.dart';
import 'core/theme/app_theme.dart';
import 'l10n/app_localizations.dart';
import 'pages/home/home_view.dart';

class LumaDramaApp extends StatefulWidget {
  const LumaDramaApp({
    super.key,
    this.playerFactory = VideoPlayerPort.new,
    this.catalogRepository,
    this.categoryRepository,
    this.downloadRepository,
    this.watchHistoryRepository,
    this.favoriteRepository,
    this.playbackRepository,
    this.commentRepository,
    this.interactionRepository,
  });

  final PlayerFactory playerFactory;

  /// 测试注入用；生产走 HTTP 仓库。
  final CatalogRepository? catalogRepository;
  final CategoryRepository? categoryRepository;
  final DownloadRepository? downloadRepository;
  final WatchHistoryRepository? watchHistoryRepository;
  final FavoriteRepository? favoriteRepository;
  final PlaybackRepository? playbackRepository;
  final CommentRepository? commentRepository;
  final InteractionRepository? interactionRepository;

  @override
  State<LumaDramaApp> createState() => _LumaDramaAppState();
}

class _LumaDramaAppState extends State<LumaDramaApp> {
  late final AuthSessionStore _sessionStore = AuthSessionStore();

  /// 全 App 共用一个 ApiClient：这样目录、账号、后续的互动/进度请求
  /// 都自动带 `Authorization` 与 `X-Device-Id`，401 的刷新重试也只有一处实现。
  late final ApiClient _apiClient = ApiClient(
    accessTokenReader: () => _auth.accessToken,
    tokenRefresher: () => _auth.refresh(),
    onUnauthorized: () => _auth.clear(),
    deviceIdReader: _sessionStore.deviceId,
  );

  late final AuthController _auth = AuthController(
    AuthApi(_apiClient),
    _sessionStore,
  );

  late final CatalogRepository _catalogRepository =
      widget.catalogRepository ?? HttpCatalogRepository(CatalogApi(_apiClient));

  late final CategoryRepository _categoryRepository =
      widget.categoryRepository ??
      HttpCategoryRepository(CategoryApi(_apiClient), _catalogRepository);

  late final WatchHistoryRepository _watchHistory =
      widget.watchHistoryRepository ??
      HttpWatchHistoryRepository(
        WatchApi(_apiClient),
        isSignedIn: () => _auth.isSignedIn,
      );

  late final FavoriteRepository _favorites =
      widget.favoriteRepository ??
      HttpFavoriteRepository(
        LibraryApi(_apiClient),
        isSignedIn: () => _auth.isSignedIn,
      );

  late final PlaybackRepository _playback =
      widget.playbackRepository ??
      HttpPlaybackRepository(PlaybackApi(_apiClient));

  late final FavoriteController _favoriteController = FavoriteController(
    _favorites,
  );

  late final DownloadRepository _downloadRepository =
      widget.downloadRepository ??
      HttpDownloadRepository(DownloadApi(_apiClient));

  late final DownloadController _downloadController = DownloadController(
    _downloadRepository,
  );

  late final CommentRepository _commentRepository =
      widget.commentRepository ?? HttpCommentRepository(CommentApi(_apiClient));

  late final InteractionRepository _interactionRepository =
      widget.interactionRepository ??
      HttpInteractionRepository(InteractionApi(_apiClient));

  late final InteractionController _interactionController =
      InteractionController(_interactionRepository);

  @override
  void initState() {
    super.initState();
    // 恢复本地令牌与设备号；未登录也能正常浏览，不阻塞首屏
    _auth.load();
    // 登录/登出时同步收藏状态：收藏属于账号，不能跨账号串联
    _auth.addListener(_onAuthChanged);
    if (_auth.isSignedIn) unawaited(_favoriteController.load());
  }

  bool _wasSignedIn = false;

  void _onAuthChanged() {
    if (_auth.isSignedIn == _wasSignedIn) return;
    _wasSignedIn = _auth.isSignedIn;
    _interactionController.clear();
    if (_auth.isSignedIn) {
      unawaited(_favoriteController.load());
    } else {
      _favoriteController.clear();
      _downloadController.reset();
    }
  }

  @override
  void dispose() {
    _auth.removeListener(_onAuthChanged);
    _favoriteController.dispose();
    _downloadController.dispose();
    _interactionController.dispose();
    _apiClient.close();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return MultiProvider(
      providers: [
        Provider(create: (_) => PlaybackCoordinator()),
        Provider<PlayerFactory>(create: (_) => widget.playerFactory),
        Provider<PlaybackRepository>.value(value: _playback),
        Provider<WatchHistoryRepository>.value(value: _watchHistory),
        Provider<FavoriteRepository>.value(value: _favorites),
        Provider<CommentRepository>.value(value: _commentRepository),
        Provider<InteractionRepository>.value(value: _interactionRepository),
        ChangeNotifierProvider(
          create: (_) => CatalogController(_catalogRepository)..load(),
        ),
        ChangeNotifierProvider(
          create: (_) => CategoryController(_categoryRepository)..load(),
        ),
        ChangeNotifierProvider(create: (_) => LocaleController()..load()),
        ChangeNotifierProvider.value(value: _favoriteController),
        ChangeNotifierProvider.value(value: _downloadController),
        ChangeNotifierProvider.value(value: _interactionController),
        ChangeNotifierProvider.value(value: _auth),
      ],
      child: Consumer<LocaleController>(
        builder: (context, locale, _) => MaterialApp(
          onGenerateTitle: (context) => AppLocalizations.of(context)!.appName,
          locale: locale.locale,
          supportedLocales: AppLocalizations.supportedLocales,
          localizationsDelegates: AppLocalizations.localizationsDelegates,
          localeResolutionCallback: (deviceLocale, _) =>
              resolveAppLocale(locale.locale, deviceLocale),
          debugShowCheckedModeBanner: false,
          themeMode: ThemeMode.system,
          theme: AppTheme.light(),
          darkTheme: AppTheme.dark(),
          home: const HomePage(),
        ),
      ),
    );
  }
}