import 'package:flutter/material.dart';
import '../../shared/theme/app_theme.dart';

/// Service de notifications animées
class AnimatedNotifications {
  static OverlayEntry? _currentOverlay;

  /// Affiche une notification de succès
  static void showSuccess(
    BuildContext context,
    String message, {
    Duration duration = const Duration(seconds: 3),
  }) {
    _showNotification(
      context,
      message,
      NotificationType.success,
      duration,
    );
  }

  /// Affiche une notification d'erreur
  static void showError(
    BuildContext context,
    String message, {
    Duration duration = const Duration(seconds: 4),
  }) {
    _showNotification(
      context,
      message,
      NotificationType.error,
      duration,
    );
  }

  /// Affiche une notification d'information
  static void showInfo(
    BuildContext context,
    String message, {
    Duration duration = const Duration(seconds: 3),
  }) {
    _showNotification(
      context,
      message,
      NotificationType.info,
      duration,
    );
  }

  /// Affiche une notification d'avertissement
  static void showWarning(
    BuildContext context,
    String message, {
    Duration duration = const Duration(seconds: 3),
  }) {
    _showNotification(
      context,
      message,
      NotificationType.warning,
      duration,
    );
  }

  static void _showNotification(
    BuildContext context,
    String message,
    NotificationType type,
    Duration duration,
  ) {
    // Supprimer la notification précédente si elle existe
    _currentOverlay?.remove();

    final overlay = Overlay.of(context);
    late OverlayEntry overlayEntry;

    overlayEntry = OverlayEntry(
      builder: (context) => AnimatedNotificationWidget(
        message: message,
        type: type,
        onDismiss: () {
          overlayEntry.remove();
          _currentOverlay = null;
        },
      ),
    );

    _currentOverlay = overlayEntry;
    overlay.insert(overlayEntry);

    // Auto-dismiss après la durée spécifiée
    Future.delayed(duration, () {
      if (_currentOverlay == overlayEntry) {
        overlayEntry.remove();
        _currentOverlay = null;
      }
    });
  }

  /// Masque la notification actuelle
  static void dismiss() {
    _currentOverlay?.remove();
    _currentOverlay = null;
  }
}

/// Widget de notification animée
class AnimatedNotificationWidget extends StatefulWidget {
  final String message;
  final NotificationType type;
  final VoidCallback onDismiss;

  const AnimatedNotificationWidget({
    super.key,
    required this.message,
    required this.type,
    required this.onDismiss,
  });

  @override
  State<AnimatedNotificationWidget> createState() => _AnimatedNotificationWidgetState();
}

class _AnimatedNotificationWidgetState extends State<AnimatedNotificationWidget>
    with TickerProviderStateMixin {
  late AnimationController _slideController;
  late AnimationController _fadeController;
  late AnimationController _scaleController;
  
  late Animation<Offset> _slideAnimation;
  late Animation<double> _fadeAnimation;
  late Animation<double> _scaleAnimation;

  @override
  void initState() {
    super.initState();
    
    _slideController = AnimationController(
      duration: const Duration(milliseconds: 500),
      vsync: this,
    );
    
    _fadeController = AnimationController(
      duration: const Duration(milliseconds: 300),
      vsync: this,
    );
    
    _scaleController = AnimationController(
      duration: const Duration(milliseconds: 200),
      vsync: this,
    );
    
    _slideAnimation = Tween<Offset>(
      begin: const Offset(0, -1),
      end: Offset.zero,
    ).animate(CurvedAnimation(
      parent: _slideController,
      curve: Curves.elasticOut,
    ));
    
    _fadeAnimation = Tween<double>(
      begin: 0.0,
      end: 1.0,
    ).animate(CurvedAnimation(
      parent: _fadeController,
      curve: Curves.easeOut,
    ));
    
    _scaleAnimation = Tween<double>(
      begin: 1.0,
      end: 1.05,
    ).animate(CurvedAnimation(
      parent: _scaleController,
      curve: Curves.easeInOut,
    ));

    // Démarrer les animations d'entrée
    _fadeController.forward();
    _slideController.forward();
  }

  @override
  void dispose() {
    _slideController.dispose();
    _fadeController.dispose();
    _scaleController.dispose();
    super.dispose();
  }

  void _dismiss() async {
    await _fadeController.reverse();
    widget.onDismiss();
  }

  @override
  Widget build(BuildContext context) {
    final colors = _getColors();
    
    return Positioned(
      top: MediaQuery.of(context).padding.top + 16,
      left: 16,
      right: 16,
      child: AnimatedBuilder(
        animation: Listenable.merge([
          _slideAnimation,
          _fadeAnimation,
          _scaleAnimation,
        ]),
        builder: (context, child) {
          return SlideTransition(
            position: _slideAnimation,
            child: FadeTransition(
              opacity: _fadeAnimation,
              child: Transform.scale(
                scale: _scaleAnimation.value,
                child: GestureDetector(
                  onTap: () => _scaleController.forward().then((_) {
                    _scaleController.reverse();
                  }),
                  child: Container(
                    padding: const EdgeInsets.all(16),
                    decoration: BoxDecoration(
                      gradient: LinearGradient(
                        colors: [
                          colors.backgroundColor,
                          colors.backgroundColor.withOpacity(0.9),
                        ],
                        begin: Alignment.topLeft,
                        end: Alignment.bottomRight,
                      ),
                      borderRadius: BorderRadius.circular(16),
                      boxShadow: [
                        BoxShadow(
                          color: colors.backgroundColor.withOpacity(0.3),
                          blurRadius: 12,
                          offset: const Offset(0, 4),
                        ),
                      ],
                    ),
                    child: Row(
                      children: [
                        // Icône
                        Container(
                          padding: const EdgeInsets.all(8),
                          decoration: BoxDecoration(
                            color: colors.iconBackgroundColor,
                            borderRadius: BorderRadius.circular(12),
                          ),
                          child: Icon(
                            colors.icon,
                            color: colors.iconColor,
                            size: 24,
                          ),
                        ),
                        
                        const SizedBox(width: 12),
                        
                        // Message
                        Expanded(
                          child: Text(
                            widget.message,
                            style: TextStyle(
                              color: colors.textColor,
                              fontSize: 16,
                              fontWeight: FontWeight.w600,
                            ),
                          ),
                        ),
                        
                        // Bouton de fermeture
                        GestureDetector(
                          onTap: _dismiss,
                          child: Container(
                            padding: const EdgeInsets.all(4),
                            child: Icon(
                              Icons.close,
                              color: colors.textColor.withOpacity(0.7),
                              size: 20,
                            ),
                          ),
                        ),
                      ],
                    ),
                  ),
                ),
              ),
            ),
          );
        },
      ),
    );
  }

  _NotificationColors _getColors() {
    switch (widget.type) {
      case NotificationType.success:
        return _NotificationColors(
          backgroundColor: AppTheme.successColor,
          textColor: Colors.white,
          icon: Icons.check_circle,
          iconColor: Colors.white,
          iconBackgroundColor: Colors.white.withOpacity(0.2),
        );
      case NotificationType.error:
        return _NotificationColors(
          backgroundColor: AppTheme.errorColor,
          textColor: Colors.white,
          icon: Icons.error,
          iconColor: Colors.white,
          iconBackgroundColor: Colors.white.withOpacity(0.2),
        );
      case NotificationType.warning:
        return _NotificationColors(
          backgroundColor: AppTheme.warningColor,
          textColor: Colors.white,
          icon: Icons.warning,
          iconColor: Colors.white,
          iconBackgroundColor: Colors.white.withOpacity(0.2),
        );
      case NotificationType.info:
        return _NotificationColors(
          backgroundColor: AppTheme.primaryColor,
          textColor: Colors.white,
          icon: Icons.info,
          iconColor: Colors.white,
          iconBackgroundColor: Colors.white.withOpacity(0.2),
        );
    }
  }
}

class _NotificationColors {
  final Color backgroundColor;
  final Color textColor;
  final IconData icon;
  final Color iconColor;
  final Color iconBackgroundColor;

  _NotificationColors({
    required this.backgroundColor,
    required this.textColor,
    required this.icon,
    required this.iconColor,
    required this.iconBackgroundColor,
  });
}

enum NotificationType {
  success,
  error,
  warning,
  info,
}