import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:go_router/go_router.dart';
import '../../core/auth/auth_state.dart';
import '../../core/theme/app_theme.dart';
import '../../providers/auth_provider.dart';

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

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

class _SplashScreenState extends ConsumerState<SplashScreen> {
  @override
  void initState() {
    super.initState();
    // Trigger session restoration on startup
    WidgetsBinding.instance.addPostFrameCallback((_) {
      _checkSession();
    });
  }

  Future<void> _checkSession() async {
    await ref.read(authProvider.notifier).restoreSession();
    if (!mounted) return;

    final authState = ref.read(authProvider);
    if (authState.status == AuthStatus.authenticated) {
      context.go('/dashboard');
    } else {
      context.go('/login');
    }
  }

  @override
  Widget build(BuildContext context) {
    return const Scaffold(
      backgroundColor: AppTheme.primaryDark,
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Icon(
              Icons.school_rounded,
              size: 80,
              color: Colors.white,
            ),
            SizedBox(height: 24),
            Text(
              'Metatron Student ERP',
              style: TextStyle(
                color: Colors.white,
                fontSize: 24,
                fontWeight: FontWeight.bold,
                letterSpacing: 0.5,
              ),
            ),
            SizedBox(height: 8),
            Text(
              'Education Management System',
              style: TextStyle(
                color: AppTheme.textMuted,
                fontSize: 14,
              ),
            ),
            SizedBox(height: 48),
            CircularProgressIndicator(
              color: Colors.white,
              strokeWidth: 2.5,
            ),
          ],
        ),
      ),
    );
  }
}