import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:go_router/go_router.dart';
import 'package:google_fonts/google_fonts.dart';
import 'dart:math' as math; // Pour la rotation du chevron

import '../../../models/nanny_registration_data.dart';
import '../../../widgets/custom_app_text_field.dart';
import '../../../models/card_assets.dart'; // Pour les cartes
import '../../../utils/data_generator.dart'; // Implied import for DataGenerator

class NannyRegisterStep1Screen extends StatefulWidget {
  const NannyRegisterStep1Screen({super.key});

  @override
  State<NannyRegisterStep1Screen> createState() => _NannyRegisterStep1ScreenState();
}

class _NannyRegisterStep1ScreenState extends State<NannyRegisterStep1Screen> {
  final _formKey = GlobalKey<FormState>();

  final _firstNameController = TextEditingController();
  final _lastNameController = TextEditingController();
  final _streetAddressController = TextEditingController();
  final _postalCodeController = TextEditingController();
  final _cityController = TextEditingController();
  final _phoneController = TextEditingController();
  final _emailController = TextEditingController();
  final _passwordController = TextEditingController();
  final _confirmPasswordController = TextEditingController();

  @override
  void initState() {
    super.initState();
    final data = Provider.of<NannyRegistrationData>(context, listen: false);
    
    _firstNameController.text = data.firstName;
    _lastNameController.text = data.lastName;
    _streetAddressController.text = data.streetAddress;
    _postalCodeController.text = data.postalCode;
    _cityController.text = data.city;
    _phoneController.text = data.phone;
    _emailController.text = data.email;
    _passwordController.text = data.password;
    _confirmPasswordController.text = data.password.isNotEmpty ? data.password : '';

    if (data.firstName.isEmpty && data.lastName.isEmpty) {
      final String genFirstName = DataGenerator.firstName();
      final String genLastName = DataGenerator.lastName();
      _firstNameController.text = genFirstName;
      _lastNameController.text = genLastName;
      _streetAddressController.text = DataGenerator.address();
      _postalCodeController.text = DataGenerator.postalCode();
      _cityController.text = DataGenerator.city();
      _phoneController.text = DataGenerator.phone();
      _emailController.text = DataGenerator.email(genFirstName, genLastName);
      _passwordController.text = DataGenerator.password();
      _confirmPasswordController.text = _passwordController.text;
    }
  }

  @override
  void dispose() {
    _firstNameController.dispose();
    _lastNameController.dispose();
    _streetAddressController.dispose();
    _postalCodeController.dispose();
    _cityController.dispose();
    _phoneController.dispose();
    _emailController.dispose();
    _passwordController.dispose();
    _confirmPasswordController.dispose();
    super.dispose();
  }

  void _submitForm() {
    if (_formKey.currentState?.validate() ?? false) {
      Provider.of<NannyRegistrationData>(context, listen: false)
          .updateIdentityInfo(
            firstName: _firstNameController.text,
            lastName: _lastNameController.text,
            streetAddress: _streetAddressController.text,
            postalCode: _postalCodeController.text,
            city: _cityController.text,
            phone: _phoneController.text,
            email: _emailController.text,
            password: _passwordController.text,
          );
      context.go('/nanny-register-step2');
    }
  }

  @override
  Widget build(BuildContext context) {
    final screenSize = MediaQuery.of(context).size;
    const cardColor = CardColorHorizontal.blue;

    return Scaffold(
      body: Stack(
        children: [
          Positioned.fill(
            child: Image.asset(
              'assets/images/paper2.png',
              fit: BoxFit.cover,
              repeat: ImageRepeat.repeat,
            ),
          ),
          Center(
            child: SingleChildScrollView(
              padding: const EdgeInsets.symmetric(vertical: 40.0),
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  Text(
                    'Étape 1/4',
                    style: GoogleFonts.merienda(fontSize: 16, color: Colors.black54),
                  ),
                  const SizedBox(height: 10),
                  Container(
                    width: screenSize.width * 0.7,
                    padding: const EdgeInsets.symmetric(vertical: 40, horizontal: 50),
                    constraints: const BoxConstraints(minHeight: 600),
                    decoration: BoxDecoration(
                      image: DecorationImage(
                        image: AssetImage(cardColor.path),
                        fit: BoxFit.fill,
                      ),
                    ),
                    child: Form(
                      key: _formKey,
                      child: Column(
                        mainAxisSize: MainAxisSize.min,
                        children: [
                          Text(
                            'Vos informations personnelles',
                            style: GoogleFonts.merienda(
                              fontSize: 24,
                              fontWeight: FontWeight.bold,
                              color: Colors.white,
                            ),
                            textAlign: TextAlign.center,
                          ),
                          const SizedBox(height: 30),
                          Row(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              Expanded(flex: 12, child: CustomAppTextField(controller: _lastNameController, labelText: 'Nom', hintText: 'Votre nom', fieldWidth: double.infinity)),
                              Expanded(flex: 1, child: const SizedBox()),
                              Expanded(flex: 12, child: CustomAppTextField(controller: _firstNameController, labelText: 'Prénom', hintText: 'Votre prénom', fieldWidth: double.infinity)),
                            ],
                          ),
                          const SizedBox(height: 20),
                          Row(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              Expanded(flex: 12, child: CustomAppTextField(controller: _phoneController, labelText: 'Téléphone', hintText: 'Votre téléphone', keyboardType: TextInputType.phone, fieldWidth: double.infinity)),
                              Expanded(flex: 1, child: const SizedBox()),
                              Expanded(flex: 12, child: CustomAppTextField(controller: _emailController, labelText: 'Email', hintText: 'Votre e-mail', keyboardType: TextInputType.emailAddress, fieldWidth: double.infinity)),
                            ],
                          ),
                          const SizedBox(height: 20),
                          Row(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              Expanded(flex: 12, child: CustomAppTextField(controller: _passwordController, labelText: 'Mot de passe', hintText: 'Minimum 6 caractères', obscureText: true, fieldWidth: double.infinity,
                                validator: (value) {
                                  if (value == null || value.isEmpty) return 'Mot de passe requis';
                                  if (value.length < 6) return '6 caractères minimum';
                                  return null;
                                }
                              )),
                              Expanded(flex: 1, child: const SizedBox()),
                              Expanded(flex: 12, child: CustomAppTextField(controller: _confirmPasswordController, labelText: 'Confirmation', hintText: 'Confirmez le mot de passe', obscureText: true, fieldWidth: double.infinity,
                                validator: (value) {
                                  if (value == null || value.isEmpty) return 'Confirmation requise';
                                  if (value != _passwordController.text) return 'Les mots de passe ne correspondent pas';
                                  return null;
                                }
                              )),
                            ],
                          ),
                          const SizedBox(height: 20),
                          CustomAppTextField(
                            controller: _streetAddressController,
                            labelText: 'Adresse (N° et Rue)',
                            hintText: 'Numéro et nom de votre rue',
                            fieldWidth: double.infinity,
                            validator: (v) => v!.isEmpty ? 'Adresse requise' : null,
                          ),
                          const SizedBox(height: 20),
                          Row(
                            crossAxisAlignment: CrossAxisAlignment.start,
                            children: [
                              Expanded(flex: 5, child: CustomAppTextField(controller: _postalCodeController, labelText: 'Code Postal', hintText: 'C.P.', keyboardType: TextInputType.number, fieldWidth: double.infinity, validator: (v) => v!.isEmpty ? 'C.P. requis' : null)),
                              Expanded(flex: 1, child: const SizedBox()),
                              Expanded(flex: 12, child: CustomAppTextField(controller: _cityController, labelText: 'Ville', hintText: 'Votre ville', fieldWidth: double.infinity, validator: (v) => v!.isEmpty ? 'Ville requise' : null)),
                            ],
                          ),
                        ],
                      ),
                    ),
                  ),
                ],
              ),
            ),
          ),
          Positioned(
            top: screenSize.height / 2 - 20,
            left: 40,
            child: IconButton(
              icon: Transform(
                alignment: Alignment.center,
                transform: Matrix4.rotationY(math.pi),
                child: Image.asset('assets/images/chevron_right.png', height: 40),
              ),
              onPressed: () {
                if (context.canPop()) {
                  context.pop();
                } else {
                  context.go('/register-choice');
                }
              },
              tooltip: 'Retour',
            ),
          ),
          Positioned(
            top: screenSize.height / 2 - 20,
            right: 40,
            child: IconButton(
              icon: Image.asset('assets/images/chevron_right.png', height: 40),
              onPressed: _submitForm,
              tooltip: 'Suivant',
            ),
          ),
        ],
      ),
    );
  }
}