import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import '../providers/auth_provider.dart';
import 'register_screen.dart';

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

  @override
  State<LoginScreen> createState() => _LoginScreenState();
}

class _LoginScreenState extends State<LoginScreen> {
  final _formKey = GlobalKey<FormState>();
  final _emailController = TextEditingController();
  final _passwordController = TextEditingController();

  @override
  void dispose() {
    _emailController.dispose();
    _passwordController.dispose();
    super.dispose();
  }

  void _login() async {
    if (_formKey.currentState!.validate()) {
      final authProvider = Provider.of<AuthProvider>(context, listen: false);
      final success = await authProvider.login(
        _emailController.text,
        _passwordController.text,
      );

      if (success) {
        // Rediriger vers l'accueil ou le dashboard
        if (mounted) {
          ScaffoldMessenger.of(context).showSnackBar(
            const SnackBar(content: Text('Connexion réussie')),
          );
          Navigator.of(context).pop(); // Retourne à l'écran précédent (HomeScreen)
        }
      } else {
        if (mounted) {
          ScaffoldMessenger.of(context).showSnackBar(
            SnackBar(content: Text(authProvider.errorMessage ?? 'Échec de la connexion')),
          );
        }
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Connexion CESIZen')),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Form(
          key: _formKey,
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              const Text(
                'Bienvenue sur CESIZen',
                style: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
              ),
              const SizedBox(height: 32),
              TextFormField(
                controller: _emailController,
                decoration: const InputDecoration(
                  labelText: 'Email',
                  border: OutlineInputBorder(),
                  prefixIcon: Icon(Icons.email),
                ),
                keyboardType: TextInputType.emailAddress,
                validator: (value) {
                  if (value == null || value.isEmpty) return 'Veuillez entrer votre email';
                  if (!value.contains('@')) return 'Email invalide';
                  return null;
                },
              ),
              const SizedBox(height: 16),
              TextFormField(
                controller: _passwordController,
                decoration: const InputDecoration(
                  labelText: 'Mot de passe',
                  border: OutlineInputBorder(),
                  prefixIcon: Icon(Icons.lock),
                ),
                obscureText: true,
                validator: (value) {
                  if (value == null || value.isEmpty) return 'Veuillez entrer votre mot de passe';
                  return null;
                },
              ),
              const SizedBox(height: 24),
              Consumer<AuthProvider>(
                builder: (context, auth, child) {
                  return auth.isLoading
                      ? const CircularProgressIndicator()
                      : ElevatedButton(
                          onPressed: _login,
                          style: ElevatedButton.styleFrom(
                            minimumSize: const Size.fromHeight(50),
                          ),
                          child: const Text('Se connecter'),
                        );
                },
              ),
              TextButton(
                onPressed: () {
                  Navigator.push(
                    context,
                    MaterialPageRoute(builder: (context) => const RegisterScreen()),
                  );
                },
                child: const Text("Pas encore de compte ? S'inscrire"),
              ),
            ],
          ),
        ),
      ),
    );
  }
}