import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'providers/auth_provider.dart';
import 'providers/schedule_provider.dart';
import 'providers/event_detail_provider.dart';
import 'screens/login_screen.dart';
import 'screens/schedule_screen.dart';
import 'services/api_service.dart';

void main() {
  runApp(const MyApp());
}

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

  @override
  Widget build(BuildContext context) {
    final apiService = ApiService();
    return MultiProvider(
      providers: [
        ChangeNotifierProvider(create: (_) => AuthProvider(apiService)),
        ChangeNotifierProvider(create: (_) => ScheduleProvider(apiService)),
        ChangeNotifierProvider(create: (_) => EventDetailProvider(apiService)),
      ],
      child: MaterialApp(
        title: 'MyIce',
        theme: ThemeData(
          colorScheme: ColorScheme.fromSeed(
            seedColor: Colors.indigo,
            brightness: Brightness.light,
          ),
          useMaterial3: true,
        ),
        home: const AppRoot(),
      ),
    );
  }
}

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

  @override
  State<AppRoot> createState() => _AppRootState();
}

class _AppRootState extends State<AppRoot> {
  bool _initialized = false;

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addPostFrameCallback((_) {
      context.read<AuthProvider>().init().then((_) {
        if (mounted) {
          setState(() => _initialized = true);
        }
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    if (!_initialized) {
      return const Scaffold(
        body: Center(
          child: CircularProgressIndicator(),
        ),
      );
    }
    return Consumer<AuthProvider>(
      builder: (context, auth, child) {
        if (auth.isAuthenticated) {
          return const ScheduleScreen();
        }
        return const LoginScreen();
      },
    );
  }
}