import 'package:firebase_core/firebase_core.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'core/api/api_client.dart';
import 'core/auth/auth_bloc.dart';
import 'core/status/status_bloc.dart';
import 'core/chat/chat_request_bloc.dart';
import 'firebase_options.dart';
import 'router.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(options: DefaultFirebaseOptions.currentPlatform);
  runApp(const App());
}

class App extends StatefulWidget {
  const App({super.key});

  @override
  State<App> createState() => _AppState();
}

class _AppState extends State<App> with WidgetsBindingObserver {
  late final ApiClient _apiClient;
  late final StatusBloc _statusBloc;
  late final ChatRequestBloc _chatRequestBloc;

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addObserver(this);
    _apiClient = ApiClient();
    _statusBloc = StatusBloc(apiClient: _apiClient);
    _chatRequestBloc = ChatRequestBloc(apiClient: _apiClient);
  }

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

  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    if (state == AppLifecycleState.paused || state == AppLifecycleState.detached) {
      _statusBloc.add(AppPaused());
    } else if (state == AppLifecycleState.resumed) {
      _statusBloc.add(AppResumed());
    }
  }

  @override
  Widget build(BuildContext context) {
    return MultiBlocProvider(
      providers: [
        BlocProvider(create: (_) => AuthBloc(apiClient: _apiClient)..add(AppStarted())),
        BlocProvider.value(value: _statusBloc),
        BlocProvider.value(value: _chatRequestBloc),
        RepositoryProvider.value(value: _apiClient),
      ],
      child: BlocListener<AuthBloc, AuthState>(
        listener: (context, state) {
          if (state is AuthAuthenticated) {
            _statusBloc.add(StatusLoadRequested());
          }
        },
        child: BlocBuilder<AuthBloc, AuthState>(
          builder: (context, state) {
            return MaterialApp.router(
              title: 'Halo Bestie Mitra',
              routerConfig: buildRouter(context.read<AuthBloc>()),
            );
          },
        ),
      ),
    );
  }
}