import 'package:flutter/material.dart';
import 'core/app_initializer.dart';
import 'core/app_services.dart';
import 'core/logger.dart';
import 'core/theme_notifier.dart';
import 'ui/navigation/main_navigation_scaffold.dart';
import 'ui/navigation/app_router.dart';
import 'core/service_locator.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();

  // Determine environment
  const String environment = String.fromEnvironment(
    'ENV',
    defaultValue: 'dev',
  );

  // Initialize all services
  AppServices? appServices;
  try {
    appServices = await AppInitializer.initialize(environment: environment);
  } catch (e, stackTrace) {
    Logger.error('Failed to initialize application', e, stackTrace);
    // App will show error state
  }

  runApp(MyApp(appServices: appServices));
}

/// The root widget of the application.
class MyApp extends StatefulWidget {
  final AppServices? appServices;

  const MyApp({super.key, this.appServices});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  ThemeNotifier? _themeNotifier;

  @override
  void initState() {
    super.initState();
    // Get theme notifier from ServiceLocator if available
    _themeNotifier = ServiceLocator.instance.themeNotifier as ThemeNotifier?;
    if (_themeNotifier != null) {
      _themeNotifier!.addListener(_onThemeChanged);
    }
  }

  @override
  void dispose() {
    // Remove listener and dispose of all services
    _themeNotifier?.removeListener(_onThemeChanged);
    widget.appServices?.dispose();
    super.dispose();
  }

  void _onThemeChanged() {
    setState(() {
      // Rebuild when theme changes
    });
  }

  @override
  Widget build(BuildContext context) {
    final appServices = widget.appServices;

    final appRouter = appServices != null
        ? AppRouter(
            sessionService: ServiceLocator.instance.sessionService,
            localStorageService: ServiceLocator.instance.localStorageService,
            nostrService: ServiceLocator.instance.nostrService,
            syncEngine: ServiceLocator.instance.syncEngine,
            firebaseService: ServiceLocator.instance.firebaseService,
          )
        : null;

    final themeMode = _themeNotifier?.value ?? ThemeMode.light;

    return MaterialApp(
      title: 'App Boilerplate',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue),
        useMaterial3: true,
      ),
      darkTheme: ThemeData(
        colorScheme: ColorScheme.fromSeed(
          seedColor: Colors.blue,
          brightness: Brightness.dark,
        ).copyWith(
          // Use a grayish background instead of pure black
          surface: const Color(0xFF1E1E1E),
        ),
        scaffoldBackgroundColor: const Color(0xFF121212), // Grayish dark background
        useMaterial3: true,
      ),
      themeMode: themeMode,
      home: appServices != null
          ? const MainNavigationScaffold()
          : const Scaffold(
              body: Center(
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    CircularProgressIndicator(),
                    SizedBox(height: 16),
                    Text('Initializing application...'),
                  ],
                ),
              ),
            ),
      onGenerateRoute: appRouter?.generateRoute,
    );
  }
}