// 暖记 App 根组件 — MaterialApp + BLoC Provider 注入
//
// 依赖注入结构：
// RepositoryProvider<AuthRepository>  — 认证仓库（全局唯一）
//   └─ BlocProvider<AuthBloc>          — 认证 BLoC（全局唯一）
//       └─ MaterialApp.router          — 路由（使用 auth 状态守卫）

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:go_router/go_router.dart';

import 'core/theme/app_theme.dart';
import 'core/routing/app_router.dart';
import 'data/remote/api_client.dart';
import 'data/repositories/auth_repository.dart';
import 'features/auth/bloc/auth_bloc.dart';

/// 暖记 App — 根组件
class NuanjiApp extends StatelessWidget {
  const NuanjiApp({super.key});

  @override
  Widget build(BuildContext context) {
    // 创建全局依赖（App 生命周期内单例）
    final apiClient = ApiClient();
    final authRepository = AuthRepository(apiClient: apiClient);
    final authBloc = AuthBloc(authRepository: authRepository);

    // 启动时检查认证状态
    authBloc.add(const AppStarted());

    return MultiRepositoryProvider(
      providers: [
        RepositoryProvider<ApiClient>.value(value: apiClient),
        RepositoryProvider<AuthRepository>.value(value: authRepository),
      ],
      child: BlocProvider<AuthBloc>.value(
        value: authBloc,
        child: _AppView(router: createAppRouter(authBloc)),
      ),
    );
  }
}

/// App 视图 — MaterialApp.router 包装
class _AppView extends StatelessWidget {
  final GoRouter router;

  const _AppView({required this.router});

  @override
  Widget build(BuildContext context) {
    return MaterialApp.router(
      title: '暖记',
      debugShowCheckedModeBanner: false,
      theme: AppTheme.light(),
      darkTheme: AppTheme.dark(),
      themeMode: ThemeMode.system,
      routerConfig: router,
    );
  }
}