import 'package:flutter/material.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:hive_flutter/hive_flutter.dart';
import 'package:adaptive_theme/adaptive_theme.dart';
import 'package:go_router/go_router.dart';
import 'package:google_mobile_ads/google_mobile_ads.dart';
import 'package:timezone/data/latest_all.dart' as tz;

import 'core/constants/app_colors.dart';
import 'core/constants/app_constants.dart';
import 'core/services/notification_service.dart';
import 'core/utils/ad_helper.dart';
import 'domain/entities/restaurant.dart';
import 'domain/entities/visit_record.dart';
import 'domain/entities/recommendation_record.dart';
import 'domain/entities/user_settings.dart';
import 'presentation/pages/splash/splash_screen.dart';
import 'presentation/pages/main/main_screen.dart';
import 'data/sample/sample_data_initializer.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  // Initialize timezone (동기, 빠름)
  tz.initializeTimeZones();

  // 광고 SDK와 Hive 초기화를 병렬 처리
  await Future.wait([
    if (AdHelper.isMobilePlatform) MobileAds.instance.initialize(),
    _initializeHive(),
  ]);

  // Hive 초기화 후 병렬 처리 가능한 작업들
  await Future.wait([
    SampleDataInitializer.seedInitialData(),
    _initializeNotifications(),
    AdaptiveTheme.getThemeMode(),
  ]).then((results) {
    final savedThemeMode = results[2] as AdaptiveThemeMode?;
    runApp(ProviderScope(child: LunchPickApp(savedThemeMode: savedThemeMode)));
  });
}

/// Hive 초기화 및 Box 오픈
Future<void> _initializeHive() async {
  await Hive.initFlutter();

  // Register Hive Adapters
  Hive.registerAdapter(RestaurantAdapter());
  Hive.registerAdapter(DataSourceAdapter());
  Hive.registerAdapter(VisitRecordAdapter());
  Hive.registerAdapter(RecommendationRecordAdapter());
  Hive.registerAdapter(UserSettingsAdapter());

  // Open Hive Boxes (병렬 오픈)
  await Future.wait([
    Hive.openBox<Restaurant>(AppConstants.restaurantBox),
    Hive.openBox<VisitRecord>(AppConstants.visitRecordBox),
    Hive.openBox<RecommendationRecord>(AppConstants.recommendationBox),
    Hive.openBox(AppConstants.settingsBox),
    Hive.openBox<UserSettings>('user_settings'),
  ]);
}

/// 알림 서비스 초기화 (비-웹 플랫폼)
Future<void> _initializeNotifications() async {
  if (kIsWeb) return;
  final notificationService = NotificationService();
  await notificationService.ensureInitialized(requestPermission: true);
}

class LunchPickApp extends StatelessWidget {
  final AdaptiveThemeMode? savedThemeMode;

  const LunchPickApp({super.key, this.savedThemeMode});

  @override
  Widget build(BuildContext context) {
    return AdaptiveTheme(
      light: ThemeData(
        useMaterial3: true,
        colorScheme: ColorScheme.fromSeed(
          seedColor: AppColors.lightPrimary,
          brightness: Brightness.light,
        ),
        primaryColor: AppColors.lightPrimary,
        scaffoldBackgroundColor: AppColors.lightBackground,
        appBarTheme: const AppBarTheme(
          backgroundColor: AppColors.lightPrimary,
          foregroundColor: Colors.white,
          elevation: 0,
        ),
        elevatedButtonTheme: ElevatedButtonThemeData(
          style: ElevatedButton.styleFrom(
            backgroundColor: AppColors.lightPrimary,
            foregroundColor: Colors.white,
            shape: RoundedRectangleBorder(
              borderRadius: BorderRadius.circular(8),
            ),
          ),
        ),
        cardTheme: CardThemeData(
          color: AppColors.lightSurface,
          elevation: 2,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(12),
          ),
        ),
      ),
      dark: ThemeData(
        useMaterial3: true,
        colorScheme: ColorScheme.fromSeed(
          seedColor: AppColors.darkPrimary,
          brightness: Brightness.dark,
        ),
        primaryColor: AppColors.darkPrimary,
        scaffoldBackgroundColor: AppColors.darkBackground,
        appBarTheme: const AppBarTheme(
          backgroundColor: AppColors.darkPrimary,
          foregroundColor: Colors.white,
          elevation: 0,
        ),
        elevatedButtonTheme: ElevatedButtonThemeData(
          style: ElevatedButton.styleFrom(
            backgroundColor: AppColors.darkPrimary,
            foregroundColor: Colors.white,
            shape: RoundedRectangleBorder(
              borderRadius: BorderRadius.circular(8),
            ),
          ),
        ),
        cardTheme: CardThemeData(
          color: AppColors.darkSurface,
          elevation: 2,
          shape: RoundedRectangleBorder(
            borderRadius: BorderRadius.circular(12),
          ),
        ),
      ),
      initial: savedThemeMode ?? AdaptiveThemeMode.light,
      builder: (theme, darkTheme) => MaterialApp.router(
        title: AppConstants.appName,
        theme: theme,
        darkTheme: darkTheme,
        routerConfig: _router,
        debugShowCheckedModeBanner: false,
      ),
    );
  }
}

// GoRouter configuration
final _router = GoRouter(
  initialLocation: '/',
  routes: [
    GoRoute(path: '/', builder: (context, state) => const SplashScreen()),
    GoRoute(
      path: '/home',
      builder: (context, state) {
        final tabParam = state.uri.queryParameters['tab'];
        int initialTab = 2; // 기본값: 뽑기 탭
        if (tabParam != null) {
          switch (tabParam) {
            case 'share':
              initialTab = 0;
              break;
            case 'list':
              initialTab = 1;
              break;
            case 'random':
              initialTab = 2;
              break;
            case 'calendar':
              initialTab = 3;
              break;
            case 'settings':
              initialTab = 4;
              break;
          }
        }
        return MainScreen(initialTab: initialTab);
      },
    ),
  ],
);