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

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

  @override
  State<SplashScreen> createState() => _SplashScreenState();
}

class _SplashScreenState extends State<SplashScreen>
    with TickerProviderStateMixin {
  late AnimationController _logoController;
  late AnimationController _progressController;
  late AnimationController _textController;
  
  late Animation<double> _logoScaleAnimation;
  late Animation<double> _logoOpacityAnimation;
  late Animation<double> _progressAnimation;
  late Animation<double> _textOpacityAnimation;

  @override
  void initState() {
    super.initState();
    _initializeAnimations();
    _startSplashSequence();
  }

  void _initializeAnimations() {
    // Animation du logo
    _logoController = AnimationController(
      duration: const Duration(milliseconds: 1000),
      vsync: this,
    );

    _logoScaleAnimation = Tween<double>(
      begin: 0.5,
      end: 1.0,
    ).animate(CurvedAnimation(
      parent: _logoController,
      curve: Curves.elasticOut,
    ));

    _logoOpacityAnimation = Tween<double>(
      begin: 0.0,
      end: 1.0,
    ).animate(CurvedAnimation(
      parent: _logoController,
      curve: const Interval(0.0, 0.6, curve: Curves.easeIn),
    ));

    // Animation de la barre de progression
    _progressController = AnimationController(
      duration: const Duration(milliseconds: 2000),
      vsync: this,
    );

    _progressAnimation = Tween<double>(
      begin: 0.0,
      end: 1.0,
    ).animate(CurvedAnimation(
      parent: _progressController,
      curve: Curves.easeInOut,
    ));

    // Animation du texte
    _textController = AnimationController(
      duration: const Duration(milliseconds: 800),
      vsync: this,
    );

    _textOpacityAnimation = Tween<double>(
      begin: 0.0,
      end: 1.0,
    ).animate(CurvedAnimation(
      parent: _textController,
      curve: Curves.easeIn,
    ));
  }

  void _startSplashSequence() async {
    // Configuration de la barre de statut
    SystemChrome.setSystemUIOverlayStyle(
      const SystemUiOverlayStyle(
        statusBarColor: Colors.transparent,
        statusBarIconBrightness: Brightness.light,
      ),
    );

    // Séquence d'animations
    await Future.delayed(const Duration(milliseconds: 300));
    _logoController.forward();
    
    await Future.delayed(const Duration(milliseconds: 500));
    _textController.forward();
    
    await Future.delayed(const Duration(milliseconds: 300));
    _progressController.forward();

    // Attendre la fin de toutes les animations + temps de chargement
    await Future.delayed(const Duration(milliseconds: 2000));
    
    // Le splash screen sera remplacé automatiquement par l'AppWrapper
    // basé sur l'état d'authentification
  }

  @override
  void dispose() {
    _logoController.dispose();
    _progressController.dispose();
    _textController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
        decoration: BoxDecoration(
          gradient: LinearGradient(
            begin: Alignment.topLeft,
            end: Alignment.bottomRight,
            colors: [
              AppTheme.primaryColor,
              AppTheme.primaryDark,
              const Color(0xFF0D47A1),
            ],
          ),
        ),
        child: SafeArea(
          child: Column(
            children: [
              Expanded(
                flex: 3,
                child: Center(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      // Logo animé
                      AnimatedBuilder(
                        animation: _logoController,
                        builder: (context, child) {
                          return Transform.scale(
                            scale: _logoScaleAnimation.value,
                            child: Opacity(
                              opacity: _logoOpacityAnimation.value,
                              child: Container(
                                width: 120,
                                height: 120,
                                decoration: BoxDecoration(
                                  color: Colors.white,
                                  borderRadius: BorderRadius.circular(30),
                                  boxShadow: [
                                    BoxShadow(
                                      color: Colors.black.withOpacity(0.2),
                                      blurRadius: 20,
                                      offset: const Offset(0, 10),
                                    ),
                                  ],
                                ),
                                child: const Icon(
                                  Icons.groups_rounded,
                                  size: 60,
                                  color: AppTheme.primaryColor,
                                ),
                              ),
                            ),
                          );
                        },
                      ),
                      
                      const SizedBox(height: 32),
                      
                      // Titre animé
                      AnimatedBuilder(
                        animation: _textController,
                        builder: (context, child) {
                          return Opacity(
                            opacity: _textOpacityAnimation.value,
                            child: Column(
                              children: [
                                const Text(
                                  'UnionFlow',
                                  style: TextStyle(
                                    fontSize: 36,
                                    fontWeight: FontWeight.bold,
                                    color: Colors.white,
                                    letterSpacing: 1.2,
                                  ),
                                ),
                                const SizedBox(height: 8),
                                Text(
                                  'Gestion d\'associations professionnelle',
                                  style: TextStyle(
                                    fontSize: 16,
                                    color: Colors.white.withOpacity(0.9),
                                    fontWeight: FontWeight.w300,
                                  ),
                                  textAlign: TextAlign.center,
                                ),
                              ],
                            ),
                          );
                        },
                      ),
                    ],
                  ),
                ),
              ),
              
              // Section de chargement
              Expanded(
                flex: 1,
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    // Barre de progression animée
                    Container(
                      width: 200,
                      margin: const EdgeInsets.symmetric(horizontal: 40),
                      child: Column(
                        children: [
                          AnimatedBuilder(
                            animation: _progressController,
                            builder: (context, child) {
                              return LinearProgressIndicator(
                                value: _progressAnimation.value,
                                backgroundColor: Colors.white.withOpacity(0.2),
                                valueColor: const AlwaysStoppedAnimation<Color>(
                                  Colors.white,
                                ),
                                minHeight: 3,
                              );
                            },
                          ),
                          const SizedBox(height: 16),
                          AnimatedBuilder(
                            animation: _progressController,
                            builder: (context, child) {
                              return Text(
                                '${(_progressAnimation.value * 100).toInt()}%',
                                style: TextStyle(
                                  color: Colors.white.withOpacity(0.8),
                                  fontSize: 14,
                                  fontWeight: FontWeight.w500,
                                ),
                              );
                            },
                          ),
                        ],
                      ),
                    ),
                    
                    const SizedBox(height: 24),
                    
                    // Texte de chargement
                    AnimatedBuilder(
                      animation: _textController,
                      builder: (context, child) {
                        return Opacity(
                          opacity: _textOpacityAnimation.value,
                          child: Text(
                            'Initialisation...',
                            style: TextStyle(
                              color: Colors.white.withOpacity(0.7),
                              fontSize: 14,
                            ),
                          ),
                        );
                      },
                    ),
                  ],
                ),
              ),
              
              // Footer
              Padding(
                padding: const EdgeInsets.only(bottom: 40),
                child: Column(
                  children: [
                    Text(
                      'Version 1.0.0',
                      style: TextStyle(
                        color: Colors.white.withOpacity(0.6),
                        fontSize: 12,
                      ),
                    ),
                    const SizedBox(height: 8),
                    Text(
                      '© 2024 Lions Club International',
                      style: TextStyle(
                        color: Colors.white.withOpacity(0.5),
                        fontSize: 10,
                      ),
                    ),
                  ],
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}