import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';
import './config/theme_colors.dart';
import 'login_page.dart';
import 'dashboard_page.dart';

class SplashScreen extends StatefulWidget {
  const SplashScreen({Key? key}) : super(key: key);

  @override
  _SplashScreenState createState() => _SplashScreenState();
}

class _SplashScreenState extends State<SplashScreen> with TickerProviderStateMixin {
  late AnimationController _fadeController;
  late AnimationController _moveController;
  late Animation<double> _fadeAnimation;
  late Animation<double> _scaleAnimation;
  late Animation<Offset> _slideAnimation;

  @override
  void initState() {
    super.initState();
    
    // Controller untuk fade in
    _fadeController = AnimationController(
      duration: const Duration(seconds: 2),
      vsync: this,
    );

    // Controller untuk animasi bergerak
    _moveController = AnimationController(
      duration: const Duration(milliseconds: 800),
      vsync: this,
    );

    _fadeAnimation = CurvedAnimation(
      parent: _fadeController,
      curve: Curves.easeIn,
    );

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

    _slideAnimation = Tween<Offset>(
      begin: Offset.zero,
      end: Offset(0, -1.03),
    ).animate(CurvedAnimation(
      parent: _moveController,
      curve: Curves.easeInOut,
    ));

    _fadeController.forward();

    Future.delayed(Duration(seconds: 3), () {
      _moveController.forward().then((_) {
        checkLoginStatus();
      });
    });
  }

  Future<void> checkLoginStatus() async {
    final prefs = await SharedPreferences.getInstance();
    final token = prefs.getString('token');

    Navigator.pushReplacement(
      context,
      PageRouteBuilder(
        pageBuilder: (context, animation, secondaryAnimation) =>
            token != null ? DashboardPage() : LoginPage(),
        transitionsBuilder: (context, animation, secondaryAnimation, child) {
          return FadeTransition(
            opacity: animation,
            child: child,
          );
        },
        transitionDuration: Duration(milliseconds: 500),
      ),
    );
  }

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

  @override
  Widget build(BuildContext context) {
    final isDarkMode = Theme.of(context).brightness == Brightness.dark;
    
    return Scaffold(
      backgroundColor: ThemeColors.primary(context),
      body: Stack(
        children: [
          // Background image
          Positioned.fill(
            child: Image.asset(
              isDarkMode 
                ? 'assets/images/background_dark.png'
                : 'assets/images/background_light.png',
              fit: BoxFit.cover,
            ),
          ),
          // Logo dengan animasi
          Center(
            child: FadeTransition(
              opacity: _fadeAnimation,
              child: SlideTransition(
                position: _slideAnimation,
                child: ScaleTransition(
                  scale: _scaleAnimation,
                  child: Container(
                    width: 200,
                    height: 200,
                    decoration: BoxDecoration(
                      image: DecorationImage(
                        image: AssetImage(
                          isDarkMode 
                            ? 'assets/images/logo_dark.png'
                            : 'assets/images/logo_light.png'
                        ),
                        fit: BoxFit.contain,
                      ),
                    ),
                  ),
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }
}