import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:provider/provider.dart';
import '../providers/app_lock_provider.dart';
import '../providers/navigation_provider.dart';
import '../theme/app_colors.dart';
import '../routes/app_routes.dart';
import 'analysis_screen.dart';
import 'app_lock_screen.dart';
import 'settings_screen.dart';
import 'sms_scan_screen.dart';
import '../utils/animation_controller_helper.dart';
import '../widgets/floating_navigation_bar.dart';
import '../widgets/glassmorphic_scaffold.dart';
import '../widgets/home_content.dart';

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

  @override
  State<MainScreen> createState() => _MainScreenState();
}

class _MainScreenState extends State<MainScreen>
    with WidgetsBindingObserver, TickerProviderStateMixin {
  late AnimationController _fadeController;
  late AnimationController _scaleController;
  late AnimationController _rotateController;
  late AnimationController _slideController;
  late AnimationController _pulseController;
  late AnimationController _waveController;
  late ScrollController _scrollController;
  late FloatingNavBarScrollController _navBarScrollController;
  
  // 화면 목록
  late final List<Widget> _screens;

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance.addObserver(this);
    _checkAppLock();

    // 애니메이션 컨트롤러 초기화
    _fadeController = AnimationController(vsync: this);
    _scaleController = AnimationController(vsync: this);
    _rotateController = AnimationController(vsync: this);
    _slideController = AnimationController(vsync: this);
    _pulseController = AnimationController(vsync: this);
    _waveController = AnimationController(vsync: this);

    // 헬퍼 클래스를 사용해 애니메이션 컨트롤러 초기화
    AnimationControllerHelper.initControllers(
      vsync: this,
      fadeController: _fadeController,
      scaleController: _scaleController,
      rotateController: _rotateController,
      slideController: _slideController,
      pulseController: _pulseController,
      waveController: _waveController,
    );

    _scrollController = ScrollController();
    
    _navBarScrollController = FloatingNavBarScrollController(
      scrollController: _scrollController,
      onHide: () {},
      onShow: () {},
    );

    // 화면 목록 초기화
    _screens = [
      HomeContent(
        fadeController: _fadeController,
        rotateController: _rotateController,
        slideController: _slideController,
        pulseController: _pulseController,
        waveController: _waveController,
        scrollController: _scrollController,
        onAddPressed: () => _navigateToAddSubscription(context),
      ),
      const AnalysisScreen(),
      Container(), // 추가 버튼은 별도 처리
      const SmsScanScreen(),
      const SettingsScreen(),
    ];
  }

  @override
  void dispose() {
    WidgetsBinding.instance.removeObserver(this);

    // 헬퍼 클래스를 사용해 애니메이션 컨트롤러 해제
    AnimationControllerHelper.disposeControllers(
      fadeController: _fadeController,
      scaleController: _scaleController,
      rotateController: _rotateController,
      slideController: _slideController,
      pulseController: _pulseController,
      waveController: _waveController,
    );

    _scrollController.dispose();
    _navBarScrollController.dispose();
    super.dispose();
  }

  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    if (state == AppLifecycleState.paused) {
      // 앱이 백그라운드로 갈 때
      final appLockProvider = context.read<AppLockProvider>();
      if (appLockProvider.isBiometricEnabled) {
        appLockProvider.lock();
      }
    } else if (state == AppLifecycleState.resumed) {
      // 앱이 포그라운드로 돌아올 때
      _checkAppLock();
      _resetAnimations();
    }
  }

  void _resetAnimations() {
    AnimationControllerHelper.resetAnimations(
      fadeController: _fadeController,
      scaleController: _scaleController,
      slideController: _slideController,
      pulseController: _pulseController,
      waveController: _waveController,
    );
  }

  Future<void> _checkAppLock() async {
    final appLockProvider = context.read<AppLockProvider>();
    if (appLockProvider.isLocked) {
      await Navigator.of(context).push(
        PageRouteBuilder(
          pageBuilder: (context, animation, secondaryAnimation) =>
              const AppLockScreen(),
          transitionsBuilder: (context, animation, secondaryAnimation, child) {
            return FadeTransition(
              opacity: animation,
              child: child,
            );
          },
        ),
      );
    }
  }

  void _navigateToAddSubscription(BuildContext context) {
    HapticFeedback.mediumImpact();
    Navigator.pushNamed(
      context,
      AppRoutes.addSubscription,
    ).then((result) {
      _resetAnimations();
      
      // 구독이 성공적으로 추가된 경우
      if (result == true) {
        // 상단에 스낵바 표시
        if (!context.mounted) return;
        ScaffoldMessenger.of(context).showSnackBar(
          SnackBar(
            content: const Row(
              children: [
                Icon(
                  Icons.check_circle,
                  color: Colors.white,
                  size: 20,
                ),
                SizedBox(width: 12),
                Text(
                  '구독이 추가되었습니다',
                  style: TextStyle(
                    fontSize: 16,
                    fontWeight: FontWeight.w500,
                  ),
                ),
              ],
            ),
            backgroundColor: const Color(0xFF10B981), // 초록색
            behavior: SnackBarBehavior.floating,
            margin: EdgeInsets.only(
              top: MediaQuery.of(context).padding.top + 16, // 상단 여백
              left: 16,
              right: 16,
              bottom: MediaQuery.of(context).size.height - 120, // 상단에 위치하도록 bottom 마진 설정
            ),
            shape: RoundedRectangleBorder(
              borderRadius: BorderRadius.circular(12),
            ),
            duration: const Duration(seconds: 3),
            dismissDirection: DismissDirection.horizontal,
          ),
        );
      }
    });
  }

  void _handleNavigation(int index, BuildContext context) {
    final navigationProvider = context.read<NavigationProvider>();
    
    // 이미 같은 인덱스면 무시
    if (navigationProvider.currentIndex == index) {
      return;
    }
    
    // 추가 버튼은 별도 처리
    if (index == 2) {
      _navigateToAddSubscription(context);
      return;
    }
    
    // 인덱스 업데이트
    navigationProvider.updateCurrentIndex(index);
  }

  @override
  Widget build(BuildContext context) {
    final navigationProvider = context.watch<NavigationProvider>();
    final hour = DateTime.now().hour;
    List<Color> backgroundGradient;
    
    // 시간대별 배경 그라디언트 설정
    if (hour >= 6 && hour < 10) {
      backgroundGradient = AppColors.morningGradient;
    } else if (hour >= 10 && hour < 17) {
      backgroundGradient = AppColors.dayGradient;
    } else if (hour >= 17 && hour < 20) {
      backgroundGradient = AppColors.eveningGradient;
    } else {
      backgroundGradient = AppColors.nightGradient;
    }

    // 현재 인덱스가 유효한지 확인
    int currentIndex = navigationProvider.currentIndex;
    if (currentIndex == 2) {
      currentIndex = 0; // 추가 버튼은 홈으로 표시
    }

    return GlassmorphicScaffold(
      body: IndexedStack(
        index: currentIndex == 3 ? 3 : currentIndex == 4 ? 4 : currentIndex,
        children: _screens,
      ),
      backgroundGradient: backgroundGradient,
      useFloatingNavBar: true,
      floatingNavBarIndex: navigationProvider.currentIndex,
      onFloatingNavBarTapped: (index) {
        _handleNavigation(index, context);
      },
      enableParticles: false,
      enableWaveAnimation: false,
    );
  }
}