import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';
import '../../services/auth_service.dart';
import '../../theme/theme_provider.dart';
import '../../theme/app_theme.dart';
import 'package:provider/provider.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();
  bool _isLoading = false;

  String _getThemeName(ThemeType type) {
    switch (type) {
      case ThemeType.defaultTheme:
        return "P'titsPas";
      case ThemeType.pastelTheme:
        return "Pastel";
      case ThemeType.darkTheme:
        return "Sombre";
    }
  }

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

  Future<void> _login() async {
    if (_formKey.currentState!.validate()) {
      setState(() => _isLoading = true);
      try {
        await AuthService.login(
          _emailController.text,
          _passwordController.text,
        );

        if (mounted) {
          context.go('/home');
        }
      } catch (e) {
        if (mounted) {
          ScaffoldMessenger.of(context).showSnackBar(
            SnackBar(
              content: Text('Erreur lors de la connexion: $e'),
              backgroundColor: Colors.red,
            ),
          );
        }
      } finally {
        if (mounted) {
          setState(() => _isLoading = false);
        }
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Connexion'),
        actions: [
          Consumer<ThemeProvider>(
            builder: (context, themeProvider, child) {
              return Padding(
                padding: const EdgeInsets.symmetric(horizontal: 16.0),
                child: DropdownButton<ThemeType>(
                  value: themeProvider.currentTheme,
                  items: ThemeType.values.map((ThemeType type) {
                    return DropdownMenuItem<ThemeType>(
                      value: type,
                      child: Text(_getThemeName(type)),
                    );
                  }).toList(),
                  onChanged: (ThemeType? newValue) {
                    if (newValue != null) {
                      themeProvider.setTheme(newValue);
                    }
                  },
                ),
              );
            },
          ),
        ],
      ),
      body: Center(
        child: SingleChildScrollView(
          padding: const EdgeInsets.all(16.0),
          child: Form(
            key: _formKey,
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                TextFormField(
                  controller: _emailController,
                  decoration: const InputDecoration(
                    labelText: 'Email',
                    border: OutlineInputBorder(),
                  ),
                  keyboardType: TextInputType.emailAddress,
                  validator: (value) {
                    if (value == null || value.isEmpty) {
                      return 'Veuillez entrer votre email';
                    }
                    if (!value.contains('@')) {
                      return 'Veuillez entrer un email valide';
                    }
                    return null;
                  },
                ),
                const SizedBox(height: 16),
                TextFormField(
                  controller: _passwordController,
                  decoration: const InputDecoration(
                    labelText: 'Mot de passe',
                    border: OutlineInputBorder(),
                  ),
                  obscureText: true,
                  validator: (value) {
                    if (value == null || value.isEmpty) {
                      return 'Veuillez entrer votre mot de passe';
                    }
                    return null;
                  },
                ),
                const SizedBox(height: 24),
                ElevatedButton(
                  onPressed: _isLoading ? null : _login,
                  child: _isLoading
                      ? const CircularProgressIndicator()
                      : const Text('Se connecter'),
                ),
                const SizedBox(height: 16),
                TextButton(
                  onPressed: () => context.go('/parent-register'),
                  child: const Text('Créer un compte parent'),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}