flutterApp/lib/main.dart

import 'dart:async';
import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:go_router/go_router.dart';
import 'package:maibu_satabot_v2/core/app/app_user_cubit.dart';
import 'package:maibu_satabot_v2/core/infrastructure/logging/app_bloc_observer.dart';
import 'package:maibu_satabot_v2/core/logging/i_logger_service.dart';
import 'package:maibu_satabot_v2/core/theme/AppTheme.dart';
import 'package:maibu_satabot_v2/features/auth/presentation/bloc/auth_cubit.dart';
import 'package:maibu_satabot_v2/features/devices/presentation/bloc/devices_cubit.dart';

import 'core/di/injection.dart';
import 'features/auth/presentation/bloc/auth_state.dart';
import 'features/auth/presentation/bloc/login_cubit.dart';
import 'features/devices/presentation/bloc/device_status_bloc.dart';

void main() async {
  // 1. 使用 runZonedGuarded 捕获所有未处理的异步错误
  runZonedGuarded(
    () async {
      WidgetsFlutterBinding.ensureInitialized();

      // 2. 初始化依赖注入 (这里面应包含 ILoggerService 的注册)
      await init();

      // 3. 从 sl 中获取 logger 实例并初始化 Sentry
      final logger = sl<ILoggerService>();
      await logger.init();

      // 4. 设置全局 Bloc 观察者，自动上报 Bloc 错误
      Bloc.observer = AppBlocObserver(logger);

      runApp(const MyApp());
    },
    (error, stack) {
      // 5. 捕获顶级错误并上报
      sl<ILoggerService>().captureException(error, stackTrace: stack);
    },
  );
}

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

  @override
  Widget build(BuildContext context) {
    // 在 runApp 之前调用 appStarted，确保 GoRouter 初始化时能获取到正确的初始状态
    sl<AuthCubit>().appStarted();
    final deviceStatusBloc = sl<DeviceStatusBloc>();
    return MultiBlocProvider(
      providers: [
        // 核心修正：在这里提供 AuthCubit
        BlocProvider<AuthCubit>(create: (_) => sl<AuthCubit>()),

        BlocProvider<AppUserCubit>(create: (_) => sl<AppUserCubit>()),
        BlocProvider<LoginCubit>(create: (_) => sl<LoginCubit>()),
        BlocProvider<DevicesCubit>(
          create: (_) {
            // 增加一个健壮性检查
            final user = sl<AppUserCubit>().state.user;
            final devicesCubit = sl<DevicesCubit>();
            if (user != null) {
              devicesCubit.fetchAllDevices(user.username);
            }
            return devicesCubit;
          },
        ),
        BlocProvider<DeviceStatusBloc>.value(
          value: deviceStatusBloc,
        ),
        // 其他 Cubit...
      ],
      child: MaterialApp.router(title: 'Maibu Satabot',
        theme: AppTheme.lightTheme, routerConfig: sl<GoRouter>(),
        builder: (context, child) {
        return _LifecycleListener(child: child);
      },),


    );
  }
}
// 🔥 新增：应用生命周期监听器
class _LifecycleListener extends StatefulWidget {
  final Widget? child;

  const _LifecycleListener({required this.child});

  @override
  State<_LifecycleListener> createState() => _LifecycleListenerState();
}

class _LifecycleListenerState extends State<_LifecycleListener> with WidgetsBindingObserver {
  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addObserver(this);
  }

  @override
  void dispose() {
    WidgetsBinding.instance.removeObserver(this);
    super.dispose();
  }

  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    super.didChangeAppLifecycleState(state);

    switch (state) {
      case AppLifecycleState.resumed:
      // 🔥 从息屏或后台恢复到前台
        debugPrint('📱 [生命周期] 应用恢复到前台 (resumed)，检查 TCP 连接...');
        _handleResume();
        break;

      case AppLifecycleState.inactive:
      // 应用处于非活动状态（iOS 来电、Android 分屏等）
        debugPrint('💤 [生命周期] 应用进入非活动状态 (inactive)');
        break;

      case AppLifecycleState.paused:
      // 应用进入后台（息屏、按 Home 键等）
        debugPrint('🌙 [生命周期] 应用进入后台 (paused)');
        break;

      case AppLifecycleState.detached:
      // 应用仍然托管但不会显示给用户（例如销毁中的 Activity）
        debugPrint('🚫 [生命周期] 应用已分离 (detached)');
        break;

      case AppLifecycleState.hidden:
      // 应用不可见（Android 14+ 或未来版本）
        debugPrint('👻 [生命周期] 应用已隐藏 (hidden)');
        break;
    }
  }

  // 🔥 处理恢复到前台的逻辑
  Future<void> _handleResume() async {
    try {
      final authCubit = context.read<AuthCubit>();

      // 检查当前是否已登录
      if (authCubit.state is! AuthAuthenticated) {
        debugPrint('⚠️ [生命周期] 用户未登录，跳过 TCP 重连');
        return;
      }

      // 检查 TCP 连接状态
      // 注意：这里需要通过 authCubit 访问 tcp 实例
      // 由于 tcp 是 private 字段，我们需要在 AuthCubit 中暴露一个方法
      debugPrint('✅ [生命周期] 准备执行 TCP 重连检查...');

      // 延迟一点执行，确保 UI 已经加载完成
      await Future.delayed(const Duration(milliseconds: 500));

      // 调用 AuthCubit 的重连方法
      await authCubit.reconnectAfterResume();

      debugPrint('✅ [生命周期] TCP 重连检查完成');
    } catch (e, stack) {
      debugPrint('❌ [生命周期] 重连过程发生错误：$e\n$stack');
    }
  }

  @override
  Widget build(BuildContext context) {
    return widget.child!;
  }
}