import 'dart:ui';
import 'package:flutter/material.dart';
import 'package:shadcn_ui/shadcn_ui.dart';
import 'package:bot_toast/bot_toast.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:provider/provider.dart';
import 'package:provider/single_child_widget.dart';
import 'package:shared_preferences/shared_preferences.dart';

import 'core/network/dio_client.dart';
import 'core/storage/local_storage.dart';
import 'core/theme/app_color_scheme.dart';
import 'core/theme/app_theme.dart';
import 'core/event/app_event_bus.dart';
import 'data/services/user_service.dart';
import 'data/services/market_service.dart';
import 'data/services/trade_service.dart';
import 'data/services/asset_service.dart';
import 'data/services/fund_service.dart';
import 'data/services/bonus_service.dart';
import 'providers/auth_provider.dart';
import 'providers/market_provider.dart';
import 'providers/asset_provider.dart';
import 'providers/theme_provider.dart';
import 'ui/pages/auth/login_page.dart';
import 'ui/pages/main/main_page.dart';
import 'ui/pages/onboarding/onboarding_page.dart';

void main() async {
  // 确保 Flutter 绑定初始化
  WidgetsFlutterBinding.ensureInitialized();

  // 全局错误处理 - Flutter 框架错误
  FlutterError.onError = (FlutterErrorDetails details) {
    FlutterError.presentError(details);
    debugPrint('Flutter Error: ${details.exception}');
    debugPrint('Stack trace: ${details.stack}');
  };

  // 全局错误处理 - 异步未捕获错误
  PlatformDispatcher.instance.onError = (error, stack) {
    debugPrint('Uncaught error: $error');
    debugPrint('Stack: $stack');
    return true;
  };

  Provider.debugCheckInvalidValueType = null;

  try {
    await SharedPreferences.getInstance();
    await LocalStorage.init();
    debugPrint('App initialized successfully');
  } catch (e, stack) {
    debugPrint('Initialization error: $e');
    debugPrint('Stack: $stack');
  }

  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MultiProvider(
      providers: _buildProviders(),
      child: Consumer<ThemeProvider>(
        builder: (context, themeProvider, _) {
          return ShadApp.custom(
            themeMode: themeProvider.themeMode,
            theme: ShadThemeData(
              colorScheme: AppColorScheme.lightShad,
              brightness: Brightness.light,
            ),
            darkTheme: ShadThemeData(
              colorScheme: AppColorScheme.darkShad,
              brightness: Brightness.dark,
            ),
            appBuilder: _buildMaterialApp,
          );
        },
      ),
    );
  }

  List<SingleChildWidget> _buildProviders() {
    final dioClient = DioClient();

    return [
      // Theme Provider (必须放在最前面)
      ChangeNotifierProvider<ThemeProvider>(
        create: (_) => ThemeProvider()..init(),
      ),
      // Services
      Provider<DioClient>.value(value: dioClient),
      Provider<AppEventBus>(create: (_) => AppEventBus()),
      Provider<UserService>(create: (_) => UserService(dioClient)),
      Provider<MarketService>(create: (_) => MarketService(dioClient)),
      Provider<TradeService>(create: (_) => TradeService(dioClient)),
      Provider<AssetService>(create: (_) => AssetService(dioClient)),
      Provider<FundService>(create: (_) => FundService(dioClient)),
      Provider<BonusService>(create: (_) => BonusService(dioClient)),
      // State Management
      ChangeNotifierProvider<AuthProvider>(
        create: (ctx) {
          final authProvider = AuthProvider(ctx.read<UserService>());
          // token 过期时，DioClient 回调 AuthProvider 强制登出
          dioClient.onUnauthorized = authProvider.forceLogout;
          return authProvider;
        },
      ),
      ChangeNotifierProvider<MarketProvider>(
        create: (ctx) => MarketProvider(ctx.read<MarketService>()),
      ),
      ChangeNotifierProvider<AssetProvider>(
        create: (ctx) => AssetProvider(
          ctx.read<AssetService>(),
          ctx.read<FundService>(),
          ctx.read<AppEventBus>(),
        ),
      ),
    ];
  }

  Widget _buildMaterialApp(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      theme: Theme.of(context),
      localizationsDelegates: const [
        GlobalShadLocalizations.delegate,
        GlobalMaterialLocalizations.delegate,
        GlobalCupertinoLocalizations.delegate,
        GlobalWidgetsLocalizations.delegate,
      ],
      builder: (context, child) {
        child = ShadAppBuilder(child: child!);
        // 配置 BotToast 确保显示在所有内容之上
        final botToastBuilder = BotToastInit();
        child = botToastBuilder(context, child);
        return child;
      },
      navigatorObservers: [BotToastNavigatorObserver()],
      initialRoute: '/',
      routes: {
        '/': (context) => const RootPage(),
        '/login': (context) => const LoginPage(),
        '/main': (context) => const MainPage(),
      },
    );
  }
}

/// 根页面 - 决定显示引导页还是主页面
class RootPage extends StatelessWidget {
  const RootPage({super.key});

  @override
  Widget build(BuildContext context) {
    // 检查是否需要显示引导页
    if (!LocalStorage.isOnboardingCompleted) {
      return OnboardingPage(
        onComplete: () {
          Navigator.of(context).pushReplacementNamed('/login');
        },
      );
    }

    return Consumer<AuthProvider>(
      builder: (context, auth, _) {
        if (auth.isLoading) {
          return const Scaffold(
            body: Center(child: CircularProgressIndicator()),
          );
        }
        return auth.isLoggedIn ? const MainPage() : const LoginPage();
      },
    );
  }
}