import 'package:flutter/material.dart';
import 'package:firebase_auth/firebase_auth.dart';

class ResetPasswordPage extends StatefulWidget {
  final String email;
  final String actionCode;

  const ResetPasswordPage({
    super.key,
    required this.email,
    required this.actionCode,
  });

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

class ResetPasswordPageState extends State<ResetPasswordPage> {
  final _formKey = GlobalKey<FormState>();
  final _passwordController = TextEditingController();
  final _confirmPasswordController = TextEditingController();
  bool _isLoading = false;
  String? _errorMessage;

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

  Future<void> _resetPassword() async {
    if (!_formKey.currentState!.validate()) return;

    setState(() {
      _isLoading = true;
      _errorMessage = null;
    });

    try {
      // Vérifier le code d'action
      await FirebaseAuth.instance.verifyPasswordResetCode(widget.actionCode);

      // Réinitialiser le mot de passe
      await FirebaseAuth.instance.confirmPasswordReset(
        code: widget.actionCode,
        newPassword: _passwordController.text,
      );

      // Connecter l'utilisateur automatiquement
      await FirebaseAuth.instance.signInWithEmailAndPassword(
        email: widget.email,
        password: _passwordController.text,
      );

      if (mounted) {
        Navigator.of(context).pushReplacementNamed('/home');
      }
    } catch (e) {
      setState(() {
        _errorMessage = 'Une erreur est survenue. Veuillez réessayer.';
      });
    } finally {
      if (mounted) {
        setState(() {
          _isLoading = false;
        });
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Créer votre mot de passe'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Form(
          key: _formKey,
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              Text(
                'Bienvenue ! Veuillez créer votre mot de passe pour continuer.',
                style: Theme.of(context).textTheme.titleMedium,
                textAlign: TextAlign.center,
              ),
              const SizedBox(height: 24),
              TextFormField(
                controller: _passwordController,
                decoration: const InputDecoration(
                  labelText: 'Nouveau mot de passe',
                  border: OutlineInputBorder(),
                ),
                obscureText: true,
                validator: (value) {
                  if (value == null || value.isEmpty) {
                    return 'Veuillez entrer un mot de passe';
                  }
                  if (value.length < 6) {
                    return 'Le mot de passe doit contenir au moins 6 caractères';
                  }
                  return null;
                },
              ),
              const SizedBox(height: 16),
              TextFormField(
                controller: _confirmPasswordController,
                decoration: const InputDecoration(
                  labelText: 'Confirmer le mot de passe',
                  border: OutlineInputBorder(),
                ),
                obscureText: true,
                validator: (value) {
                  if (value != _passwordController.text) {
                    return 'Les mots de passe ne correspondent pas';
                  }
                  return null;
                },
              ),
              if (_errorMessage != null) ...[
                const SizedBox(height: 16),
                Text(
                  _errorMessage!,
                  style: TextStyle(
                    color: Theme.of(context).colorScheme.error,
                  ),
                  textAlign: TextAlign.center,
                ),
              ],
              const SizedBox(height: 24),
              ElevatedButton(
                onPressed: _isLoading ? null : _resetPassword,
                child: _isLoading
                    ? const CircularProgressIndicator()
                    : const Text('Créer le mot de passe'),
              ),
            ],
          ),
        ),
      ),
    );
  }
}