import 'dart:io';
import 'dart:ui';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:get/get.dart';
import 'package:file_picker/file_picker.dart';
import 'package:open_file/open_file.dart';
import 'package:pdf/widgets.dart' as pw;
import 'package:qr_flutter/qr_flutter.dart';
import 'package:qr_code_scanner_plus/qr_code_scanner_plus.dart';
import 'package:intl/intl.dart';
import 'package:path_provider/path_provider.dart';
import 'package:excel/excel.dart' hide Border;
import 'package:youmazgestion/Services/qrService.dart';
import 'package:youmazgestion/Services/stock_managementDatabase.dart';
import 'package:youmazgestion/controller/userController.dart';
import '../Components/appDrawer.dart';
import '../Components/app_bar.dart';
import '../Models/produit.dart';

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

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

class _ProductManagementPageState extends State<ProductManagementPage> {
  final AppDatabase _productDatabase = AppDatabase.instance;
  final AppDatabase _appDatabase = AppDatabase.instance;
  final UserController _userController = Get.find<UserController>();
           final pdfService = PdfPrintService();

  List<Product> _products = [];
  List<Product> _filteredProducts = [];
  final TextEditingController _searchController = TextEditingController();
  String _selectedCategory = 'Tous';
  List<String> _categories = ['Tous'];
  bool _isLoading = true;
  List<Map<String, dynamic>> _pointsDeVente = [];
  String? _selectedPointDeVente;

  // Variables pour le scanner
  QRViewController? _qrController;
  bool _isScanning = false;
  bool _isAssigning = false;
  final GlobalKey _qrKey = GlobalKey(debugLabel: 'QR');

  Future<void> _loadAvailableCategories() async {
  try {
    final categories = await _productDatabase.getCategories();
    setState(() {
      _availableCategories = ['Non catégorisé', ...categories];
    });
  } catch (e) {
    debugPrint('Erreur lors du chargement des catégories: $e');
    // Garder la catégorie par défaut en cas d'erreur
  }
}

  // Catégories prédéfinies pour l'ajout de produits
List<String> _availableCategories = ['Non catégorisé'];
bool _isUserSuperAdmin() {
  return _userController.role == 'Super Admin';
}
  // Variables pour l'import Excel (conservées du code original)
  bool _isImporting = false;
  double _importProgress = 0.0;
  String _importStatusText = '';

  @override
  void initState() {
    super.initState();
    _loadProducts();
    _loadPointsDeVente();
    _loadAvailableCategories(); 
    _searchController.addListener(_filterProducts);
  }

  @override
  void dispose() {
    _qrController?.dispose();
    _searchController.dispose();
    super.dispose();
  }

  void _showAddProductDialog() {
    final nameController = TextEditingController();
    final priceController = TextEditingController();
    final stockController = TextEditingController();
    final descriptionController = TextEditingController();
    final imageController = TextEditingController();
    final referenceController = TextEditingController();
    final marqueController = TextEditingController();
    final ramController = TextEditingController();
    final memoireInterneController = TextEditingController();
    final imeiController = TextEditingController();
    final newPointDeVenteController = TextEditingController();

    String? selectedPointDeVente;
    List<Map<String, dynamic>> pointsDeVente = [];
    bool isLoadingPoints = true;
    String selectedCategory =
        _availableCategories.last; // 'Non catégorisé' par défaut
    File? pickedImage;
    String? qrPreviewData;
    bool autoGenerateReference = true;
    bool showAddNewPoint = false;

// 🎨 Widget pour les cartes d'information
Widget _buildInfoCard(String label, String value, IconData icon, Color color) {
  return Container(
    padding: const EdgeInsets.all(12),
    decoration: BoxDecoration(
      color: color.withOpacity(0.1),
      borderRadius: BorderRadius.circular(8),
      border: Border.all(color: color.withOpacity(0.3)),
    ),
    child: Column(
      children: [
        Icon(icon, color: color, size: 20),
        const SizedBox(height: 4),
        Text(
          label,
          style: TextStyle(
            fontSize: 10,
            color: Colors.grey.shade600,
            fontWeight: FontWeight.w500,
          ),
          textAlign: TextAlign.center,
        ),
        Text(
          value,
          style: TextStyle(
            fontSize: 12,
            fontWeight: FontWeight.bold,
            color: color,
          ),
          textAlign: TextAlign.center,
        ),
      ],
    ),
  );
}
// 🎨 Widget pour les étapes de transfert
Widget _buildTransferStep(String label, String pointDeVente, IconData icon, Color color) {
  return Container(
    padding: const EdgeInsets.all(12),
    decoration: BoxDecoration(
      color: Colors.white,
      borderRadius: BorderRadius.circular(8),
      border: Border.all(color: color.withOpacity(0.3)),
    ),
    child: Column(
      children: [
        Container(
          padding: const EdgeInsets.all(6),
          decoration: BoxDecoration(
            color: color.withOpacity(0.1),
            borderRadius: BorderRadius.circular(6),
          ),
          child: Icon(icon, color: color, size: 16),
        ),
        const SizedBox(height: 6),
        Text(
          label,
          style: TextStyle(
            fontSize: 10,
            color: Colors.grey.shade600,
            fontWeight: FontWeight.bold,
          ),
        ),
        Text(
          pointDeVente,
          style: TextStyle(
            fontSize: 11,
            fontWeight: FontWeight.w600,
            color: color,
          ),
          textAlign: TextAlign.center,
          maxLines: 2,
          overflow: TextOverflow.ellipsis,
        ),
      ],
    ),
  );
}
// 🎨 INTERFACE AMÉLIORÉE: Dialog moderne pour demande de transfert
Future<void> _showDemandeTransfertDialog(Product product) async {
  final quantiteController = TextEditingController(text: '1');
  final notesController = TextEditingController();
  final _formKey = GlobalKey<FormState>();
  
  // Récupérer les infos du point de vente source
  final pointDeVenteSource = await _appDatabase.getPointDeVenteNomById(product.pointDeVenteId ?? 0);
  final pointDeVenteDestination = await _appDatabase.getPointDeVenteNomById(_userController.pointDeVenteId);
  
  await showDialog(
    context: context,
    barrierDismissible: false,
    builder: (context) => AlertDialog(
      shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
      contentPadding: EdgeInsets.zero,
      content: Container(
        width: 400,
        child: SingleChildScrollView(
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              // En-tête avec design moderne
              Container(
                width: double.infinity,
                padding: const EdgeInsets.all(20),
                decoration: BoxDecoration(
                  gradient: LinearGradient(
                    colors: [Colors.blue.shade600, Colors.blue.shade700],
                    begin: Alignment.topLeft,
                    end: Alignment.bottomRight,
                  ),
                  borderRadius: const BorderRadius.only(
                    topLeft: Radius.circular(16),
                    topRight: Radius.circular(16),
                  ),
                ),
                child: Column(
                  children: [
                    Icon(
                      Icons.swap_horizontal_circle,
                      size: 48,
                      color: Colors.white,
                    ),
                    const SizedBox(height: 8),
                    Text(
                      'Demande de transfert',
                      style: TextStyle(
                        fontSize: 20,
                        fontWeight: FontWeight.bold,
                        color: Colors.white,
                      ),
                    ),
                    Text(
                      'Transférer un produit entre points de vente',
                      style: TextStyle(
                        fontSize: 14,
                        color: Colors.white.withOpacity(0.9),
                      ),
                    ),
                  ],
                ),
              ),
              
              // Contenu principal
              Padding(
                padding: const EdgeInsets.all(20),
                child: Form(
                  key: _formKey,
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      // Informations du produit
                      Container(
                        width: double.infinity,
                        padding: const EdgeInsets.all(16),
                        decoration: BoxDecoration(
                          color: Colors.grey.shade50,
                          borderRadius: BorderRadius.circular(12),
                          border: Border.all(color: Colors.grey.shade200),
                        ),
                        child: Column(
                          crossAxisAlignment: CrossAxisAlignment.start,
                          children: [
                            Row(
                              children: [
                                Container(
                                  padding: const EdgeInsets.all(8),
                                  decoration: BoxDecoration(
                                    color: Colors.blue.shade100,
                                    borderRadius: BorderRadius.circular(8),
                                  ),
                                  child: Icon(
                                    Icons.inventory_2,
                                    color: Colors.blue.shade700,
                                    size: 20,
                                  ),
                                ),
                                const SizedBox(width: 12),
                                Expanded(
                                  child: Column(
                                    crossAxisAlignment: CrossAxisAlignment.start,
                                    children: [
                                      Text(
                                        'Produit à transférer',
                                        style: TextStyle(
                                          fontSize: 12,
                                          color: Colors.grey.shade600,
                                          fontWeight: FontWeight.w500,
                                        ),
                                      ),
                                      Text(
                                        product.name,
                                        style: const TextStyle(
                                          fontSize: 16,
                                          fontWeight: FontWeight.bold,
                                        ),
                                      ),
                                    ],
                                  ),
                                ),
                              ],
                            ),
                            const SizedBox(height: 12),
                            Row(
                              children: [
                                Expanded(
                                  child: _buildInfoCard(
                                    'Prix unitaire',
                                    '${NumberFormat('#,##0.00', 'fr_FR').format(product.price)} MGA',
                                    Icons.attach_money,
                                    Colors.green,
                                  ),
                                ),
                                const SizedBox(width: 8),
                                Expanded(
                                  child: _buildInfoCard(
                                    'Stock disponible',
                                    '${product.stock ?? 0}',
                                    Icons.inventory,
                                    product.stock != null && product.stock! > 0 
                                        ? Colors.green 
                                        : Colors.red,
                                  ),
                                ),
                              ],
                            ),
                            if (product.reference != null && product.reference!.isNotEmpty) ...[
                              const SizedBox(height: 8),
                              Text(
                                'Référence: ${product.reference}',
                                style: TextStyle(
                                  fontSize: 12,
                                  color: Colors.grey.shade600,
                                  fontFamily: 'monospace',
                                ),
                              ),
                            ],
                          ],
                        ),
                      ),
                      
                      const SizedBox(height: 20),
                      
                      // Informations de transfert
                      Container(
                        width: double.infinity,
                        padding: const EdgeInsets.all(16),
                        decoration: BoxDecoration(
                          color: Colors.orange.shade50,
                          borderRadius: BorderRadius.circular(12),
                          border: Border.all(color: Colors.orange.shade200),
                        ),
                        child: Column(
                          children: [
                            Row(
                              children: [
                                Icon(Icons.arrow_forward, color: Colors.orange.shade700),
                                const SizedBox(width: 8),
                                Text(
                                  'Informations de transfert',
                                  style: TextStyle(
                                    fontSize: 14,
                                    fontWeight: FontWeight.bold,
                                    color: Colors.orange.shade700,
                                  ),
                                ),
                              ],
                            ),
                            const SizedBox(height: 12),
                            Row(
                              children: [
                                Expanded(
                                  child: _buildTransferStep(
                                    'DE',
                                    pointDeVenteSource ?? 'Chargement...',
                                    Icons.store_outlined,
                                    Colors.red.shade600,
                                  ),
                                ),
                                Container(
                                  margin: const EdgeInsets.symmetric(horizontal: 8),
                                  child: Icon(
                                    Icons.arrow_forward,
                                    color: Colors.orange.shade700,
                                    size: 24,
                                  ),
                                ),
                                Expanded(
                                  child: _buildTransferStep(
                                    'VERS',
                                    pointDeVenteDestination ?? 'Chargement...',
                                    Icons.store,
                                    Colors.green.shade600,
                                  ),
                                ),
                              ],
                            ),
                          ],
                        ),
                      ),
                      
                      const SizedBox(height: 20),
                      
                      // Champ quantité avec design amélioré
                      Text(
                        'Quantité à transférer',
                        style: TextStyle(
                          fontSize: 14,
                          fontWeight: FontWeight.w600,
                          color: Colors.grey.shade700,
                        ),
                      ),
                      const SizedBox(height: 8),
                      Container(
                        decoration: BoxDecoration(
                          borderRadius: BorderRadius.circular(12),
                          border: Border.all(color: Colors.grey.shade300),
                        ),
                        child: Row(
                          children: [
                            IconButton(
                              onPressed: () {
                                int currentQty = int.tryParse(quantiteController.text) ?? 1;
                                if (currentQty > 1) {
                                  quantiteController.text = (currentQty - 1).toString();
                                }
                              },
                              icon: Icon(Icons.remove, color: Colors.grey.shade600),
                            ),
                            Expanded(
                              child: TextFormField(
                                controller: quantiteController,
                                decoration: const InputDecoration(
                                  border: InputBorder.none,
                                  contentPadding: EdgeInsets.symmetric(horizontal: 16),
                                  hintText: 'Quantité',
                                ),
                                textAlign: TextAlign.center,
                                keyboardType: TextInputType.number,
                                style: const TextStyle(
                                  fontSize: 16,
                                  fontWeight: FontWeight.bold,
                                ),
                                validator: (value) {
                                  if (value == null || value.isEmpty) {
                                    return 'Veuillez entrer une quantité';
                                  }
                                  final qty = int.tryParse(value) ?? 0;
                                  if (qty <= 0) {
                                    return 'Quantité invalide';
                                  }
                                  if (product.stock != null && qty > product.stock!) {
                                    return 'Quantité supérieure au stock disponible';
                                  }
                                  return null;
                                },
                              ),
                            ),
                            IconButton(
                              onPressed: () {
                                int currentQty = int.tryParse(quantiteController.text) ?? 1;
                                int maxStock = product.stock ?? 999;
                                if (currentQty < maxStock) {
                                  quantiteController.text = (currentQty + 1).toString();
                                }
                              },
                              icon: Icon(Icons.add, color: Colors.grey.shade600),
                            ),
                          ],
                        ),
                      ),
                      
                      
                      
                      // Boutons d'action avec design moderne
                      Row(
                        children: [
                          Expanded(
                            child: TextButton(
                              onPressed: () => Navigator.pop(context),
                              style: TextButton.styleFrom(
                                padding: const EdgeInsets.symmetric(vertical: 16),
                                shape: RoundedRectangleBorder(
                                  borderRadius: BorderRadius.circular(12),
                                  side: BorderSide(color: Colors.grey.shade300),
                                ),
                              ),
                              child: Text(
                                'Annuler',
                                style: TextStyle(
                                  fontSize: 16,
                                  fontWeight: FontWeight.w600,
                                  color: Colors.grey.shade700,
                                ),
                              ),
                            ),
                          ),
                          const SizedBox(width: 12),
                          Expanded(
                            flex: 2,
                            child: ElevatedButton.icon(
                              onPressed: () async {
                                if (!_formKey.currentState!.validate()) return;
                                
                                final qty = int.tryParse(quantiteController.text) ?? 0;
                                if (qty <= 0) {
                                  Get.snackbar(
                                    'Erreur',
                                    'Quantité invalide',
                                    snackPosition: SnackPosition.BOTTOM,
                                    backgroundColor: Colors.red,
                                    colorText: Colors.white,
                                  );
                                  return;
                                }
                                
                                try {
                                  setState(() => _isLoading = true);
                                  Navigator.pop(context);
                                  
                                  await _appDatabase.createDemandeTransfert(
                                    produitId: product.id!,
                                    pointDeVenteSourceId: product.pointDeVenteId!,
                                    pointDeVenteDestinationId: _userController.pointDeVenteId,
                                    demandeurId: _userController.userId,
                                    quantite: qty,
                                    notes: notesController.text.isNotEmpty 
                                        ? notesController.text 
                                        : 'Demande de transfert depuis l\'application mobile',
                                  );
                                  
                                  Get.snackbar(
                                    'Demande envoyée ✅',
                                    'Votre demande de transfert de $qty unité(s) a été enregistrée et sera traitée prochainement.',
                                    snackPosition: SnackPosition.BOTTOM,
                                    backgroundColor: Colors.green,
                                    colorText: Colors.white,
                                    duration: const Duration(seconds: 4),
                                    icon: const Icon(Icons.check_circle, color: Colors.white),
                                  );
                                } catch (e) {
                                  Get.snackbar(
                                    'Erreur',
                                    'Impossible d\'envoyer la demande: ${e.toString()}',
                                    snackPosition: SnackPosition.BOTTOM,
                                    backgroundColor: Colors.red,
                                    colorText: Colors.white,
                                    duration: const Duration(seconds: 4),
                                  );
                                } finally {
                                  setState(() => _isLoading = false);
                                }
                              },
                              icon: const Icon(Icons.send, color: Colors.white),
                              label: const Text(
                                'Envoyer la demande',
                                style: TextStyle(
                                  fontSize: 16,
                                  fontWeight: FontWeight.bold,
                                  color: Colors.white,
                                ),
                              ),
                              style: ElevatedButton.styleFrom(
                                backgroundColor: Colors.blue.shade600,
                                padding: const EdgeInsets.symmetric(vertical: 16),
                                shape: RoundedRectangleBorder(
                                  borderRadius: BorderRadius.circular(12),
                                ),
                                elevation: 2,
                              ),
                            ),
                          ),
                        ],
                      ),
                    ],
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
    ),
  );
}




    // Fonction pour mettre à jour le QR preview
    void updateQrPreview() {
      if (nameController.text.isNotEmpty) {
        final reference = autoGenerateReference
            ? _generateUniqueReference()
            : referenceController.text.trim();
        if (reference.isNotEmpty) {
          qrPreviewData = 'https://stock.guycom.mg/$reference';
        } else {
          qrPreviewData = null;
        }
      } else {
        qrPreviewData = null;
      }
    }

    final AppDatabase _productDatabase = AppDatabase.instance;
    Future<void> loadPointsDeVente(StateSetter setDialogState) async {
      try {
        final result = await _productDatabase.getPointsDeVente();
        setDialogState(() {
          // Ajouter l'option "Aucun" à la liste
          pointsDeVente = [
            {'id': null, 'nom': 'Aucun'}, // Option pour pointDeVenteId null
            ...result
          ];
          isLoadingPoints = false;
          if (selectedPointDeVente == null && result.isNotEmpty) {
            selectedPointDeVente = 'Aucun'; // Par défaut, sélectionner "Aucun"
          }
        });
      } catch (e) {
        setDialogState(() {
          isLoadingPoints = false;
        });
        Get.snackbar('Erreur', 'Impossible de charger les points de vente: $e');
      }
    }

    Get.dialog(
      AlertDialog(
        title: Row(
          children: [
            Container(
              padding: const EdgeInsets.all(8),
              decoration: BoxDecoration(
                color: Colors.green.shade100,
                borderRadius: BorderRadius.circular(8),
              ),
              child:
                  Icon(Icons.add_shopping_cart, color: Colors.green.shade700),
            ),
            const SizedBox(width: 12),
            const Text('Ajouter un produit'),
          ],
        ),
        content: Container(
          width: 600,
          constraints: const BoxConstraints(maxHeight: 600),
          child: SingleChildScrollView(
            child: StatefulBuilder(
              builder: (context, setDialogState) {
                // Charger les points de vente une seule fois
                if (isLoadingPoints && pointsDeVente.isEmpty) {
                  WidgetsBinding.instance.addPostFrameCallback((_) {
                    loadPointsDeVente(setDialogState);
                  });
                }

                return Column(
                  mainAxisSize: MainAxisSize.min,
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    // Champs obligatoires

                    Container(
                      padding: const EdgeInsets.all(12),
                      decoration: BoxDecoration(
                        color: Colors.teal.shade50,
                        borderRadius: BorderRadius.circular(8),
                        border: Border.all(color: Colors.teal.shade200),
                      ),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Row(
                            children: [
                              Icon(Icons.store, color: Colors.teal.shade700),
                              const SizedBox(width: 8),
                              Text(
                                'Point de vente',
                                style: TextStyle(
                                  fontWeight: FontWeight.w600,
                                  color: Colors.teal.shade700,
                                ),
                              ),
                            ],
                          ),
                          const SizedBox(height: 12),
                          if (isLoadingPoints)
                            const Center(child: CircularProgressIndicator())
                          else
                            Column(
                              children: [
                                if (!showAddNewPoint) ...[
                                  DropdownButtonFormField<String>(
                                    value: selectedPointDeVente,
                                    items: pointsDeVente.map((point) {
                                      return DropdownMenuItem(
                                        value: point['nom'] as String,
                                        child: Text(point['nom'] as String),
                                      );
                                    }).toList(),
                                    onChanged: (value) {
                                      setDialogState(
                                          () => selectedPointDeVente = value);
                                    },
                                    decoration: const InputDecoration(
                                      labelText:
                                          'Sélectionner un point de vente',
                                      border: OutlineInputBorder(),
                                      prefixIcon: Icon(Icons.store),
                                      filled: true,
                                      fillColor: Colors.white,
                                    ),
                                  ),
                                  const SizedBox(height: 8),
                                  Row(
                                    children: [
                                      TextButton.icon(
                                        onPressed: () {
                                          setDialogState(() {
                                            showAddNewPoint = true;
                                            newPointDeVenteController.clear();
                                          });
                                        },
                                        icon: const Icon(Icons.add, size: 16),
                                        label:
                                            const Text('Ajouter nouveau point'),
                                        style: TextButton.styleFrom(
                                          foregroundColor: Colors.teal.shade700,
                                        ),
                                      ),
                                      const Spacer(),
                                      TextButton.icon(
                                        onPressed: () =>
                                            loadPointsDeVente(setDialogState),
                                        icon:
                                            const Icon(Icons.refresh, size: 16),
                                        label: const Text('Actualiser'),
                                      ),
                                    ],
                                  ),
                                ],
                                if (showAddNewPoint) ...[
                                  DropdownButtonFormField<String>(
                                    value: selectedPointDeVente,
                                    items: pointsDeVente.map((point) {
                                      return DropdownMenuItem(
                                        value: point['nom'] as String,
                                        child: Text(point['nom'] as String),
                                      );
                                    }).toList(),
                                    onChanged: (value) {
                                      setDialogState(
                                          () => selectedPointDeVente = value);
                                    },
                                    decoration: const InputDecoration(
                                      labelText:
                                          'Sélectionner un point de vente',
                                      border: OutlineInputBorder(),
                                      prefixIcon: Icon(Icons.store),
                                      filled: true,
                                      fillColor: Colors.white,
                                    ),
                                  ),
                                  const SizedBox(height: 8),
                                  Row(
                                    children: [
                                      TextButton.icon(
                                        onPressed: () {
                                          setDialogState(() {
                                            showAddNewPoint = true;
                                            newPointDeVenteController.clear();
                                          });
                                        },
                                        icon: const Icon(Icons.add, size: 16),
                                        label:
                                            const Text('Ajouter nouveau point'),
                                        style: TextButton.styleFrom(
                                          foregroundColor: Colors.teal.shade700,
                                        ),
                                      ),
                                      const Spacer(),
                                      TextButton.icon(
                                        onPressed: () =>
                                            loadPointsDeVente(setDialogState),
                                        icon:
                                            const Icon(Icons.refresh, size: 16),
                                        label: const Text('Actualiser'),
                                      ),
                                    ],
                                  ),
                                ],
                                if (showAddNewPoint) ...[
                                  TextField(
                                    controller: newPointDeVenteController,
                                    decoration: const InputDecoration(
                                      labelText:
                                          'Nom du nouveau point de vente',
                                      border: OutlineInputBorder(),
                                      prefixIcon: Icon(Icons.add_business),
                                      filled: true,
                                      fillColor: Colors.white,
                                    ),
                                  ),
                                  const SizedBox(height: 8),
                                  Row(
                                    children: [
                                      TextButton(
                                        onPressed: () {
                                          setDialogState(() {
                                            showAddNewPoint = false;
                                            newPointDeVenteController.clear();
                                          });
                                        },
                                        child: const Text('Annuler'),
                                      ),
                                      const SizedBox(width: 8),
                                      ElevatedButton.icon(
                                        onPressed: () async {
                                          final nom = newPointDeVenteController
                                              .text
                                              .trim();
                                          if (nom.isNotEmpty) {
                                            try {
                                              final id = await _productDatabase
                                                  .getOrCreatePointDeVenteByNom(
                                                      nom);
                                              if (id != null) {
                                                setDialogState(() {
                                                  showAddNewPoint = false;
                                                  selectedPointDeVente = nom;
                                                  newPointDeVenteController
                                                      .clear();
                                                });
                                                // Recharger la liste
                                                await loadPointsDeVente(
                                                    setDialogState);
                                                Get.snackbar(
                                                  'Succès',
                                                  'Point de vente "$nom" créé avec succès',
                                                  backgroundColor: Colors.green,
                                                  colorText: Colors.white,
                                                );
                                              }
                                            } catch (e) {
                                              Get.snackbar('Erreur',
                                                  'Impossible de créer le point de vente: $e');
                                            }
                                          }
                                        },
                                        icon: const Icon(Icons.save, size: 16),
                                        label: const Text('Créer'),
                                        style: ElevatedButton.styleFrom(
                                          backgroundColor: Colors.teal,
                                          foregroundColor: Colors.white,
                                        ),
                                      ),
                                    ],
                                  ),
                                ],
                              ],
                            ),
                        ],
                      ),
                    ),
                    const SizedBox(height: 16),

                    // Nom du produit
                    TextField(
                      controller: nameController,
                      decoration: InputDecoration(
                        labelText: 'Nom du produit *',
                        border: const OutlineInputBorder(),
                        prefixIcon: const Icon(Icons.shopping_bag),
                        filled: true,
                        fillColor: Colors.grey.shade50,
                      ),
                      onChanged: (value) {
                        setDialogState(() {
                          updateQrPreview();
                        });
                      },
                    ),
                    const SizedBox(height: 16),

                    // Prix et Stock sur la même ligne
                    Row(
                      children: [
                        Expanded(
                          child: TextField(
                            controller: priceController,
                            keyboardType: const TextInputType.numberWithOptions(
                                decimal: true),
                            decoration: InputDecoration(
                              labelText: 'Prix (MGA) *',
                              border: const OutlineInputBorder(),
                              prefixIcon: const Icon(Icons.attach_money),
                              filled: true,
                              fillColor: Colors.grey.shade50,
                            ),
                          ),
                        ),
                        const SizedBox(width: 12),
                        Expanded(
                          child: TextField(
                            controller: stockController,
                            keyboardType: TextInputType.number,
                            decoration: InputDecoration(
                              labelText: 'Stock initial',
                              border: const OutlineInputBorder(),
                              prefixIcon: const Icon(Icons.inventory),
                              filled: true,
                              fillColor: Colors.grey.shade50,
                            ),
                          ),
                        ),
                      ],
                    ),
                    const SizedBox(height: 16),

                    // Catégorie
                    DropdownButtonFormField<String>(
                      value: selectedCategory,
                      items: _availableCategories 
                          .map((category) => DropdownMenuItem(
                              value: category, child: Text(category)))
                          .toList(),
                      onChanged: (value) {
                        setDialogState(() => selectedCategory = value!);
                      },
                      decoration: InputDecoration(
                        labelText: 'Catégorie',
                        border: const OutlineInputBorder(),
                        prefixIcon: const Icon(Icons.category),
                        filled: true,
                        fillColor: Colors.grey.shade50,
                      ),
                    ),
                    const SizedBox(height: 16),

                    // Description
                    TextField(
                      controller: descriptionController,
                      maxLines: 3,
                      decoration: InputDecoration(
                        labelText: 'Description',
                        border: const OutlineInputBorder(),
                        prefixIcon: const Icon(Icons.description),
                        filled: true,
                        fillColor: Colors.grey.shade50,
                      ),
                    ),
                    const SizedBox(height: 16),

                    // Section Référence
                    Container(
                      padding: const EdgeInsets.all(12),
                      decoration: BoxDecoration(
                        color: Colors.purple.shade50,
                        borderRadius: BorderRadius.circular(8),
                        border: Border.all(color: Colors.purple.shade200),
                      ),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Row(
                            children: [
                              Icon(Icons.confirmation_number,
                                  color: Colors.purple.shade700),
                              const SizedBox(width: 8),
                              Text(
                                'Référence du produit',
                                style: TextStyle(
                                  fontWeight: FontWeight.w600,
                                  color: Colors.purple.shade700,
                                ),
                              ),
                            ],
                          ),
                          const SizedBox(height: 12),
                          Row(
                            children: [
                              Checkbox(
                                value: autoGenerateReference,
                                onChanged: (value) {
                                  setDialogState(() {
                                    autoGenerateReference = value!;
                                    updateQrPreview();
                                  });
                                },
                              ),
                              const Text('Générer automatiquement'),
                            ],
                          ),
                          const SizedBox(height: 8),
                          if (!autoGenerateReference)
                            TextField(
                              controller: referenceController,
                              decoration: const InputDecoration(
                                labelText: 'Référence *',
                                border: OutlineInputBorder(),
                                prefixIcon: Icon(Icons.tag),
                                filled: true,
                                fillColor: Colors.white,
                              ),
                              onChanged: (value) {
                                setDialogState(() {
                                  updateQrPreview();
                                });
                              },
                            ),
                          if (autoGenerateReference)
                            Container(
                              padding: const EdgeInsets.all(12),
                              decoration: BoxDecoration(
                                color: Colors.grey.shade100,
                                borderRadius: BorderRadius.circular(4),
                              ),
                              child: Text(
                                'Référence générée automatiquement',
                                style: TextStyle(color: Colors.grey.shade700),
                              ),
                            ),
                        ],
                      ),
                    ),
                    const SizedBox(height: 16),

                    // Nouveaux champs (Marque, RAM, Mémoire interne, IMEI)
                    Container(
                      padding: const EdgeInsets.all(12),
                      decoration: BoxDecoration(
                        color: Colors.orange.shade50,
                        borderRadius: BorderRadius.circular(8),
                        border: Border.all(color: Colors.orange.shade200),
                      ),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Row(
                            children: [
                              Icon(Icons.memory, color: Colors.orange.shade700),
                              const SizedBox(width: 8),
                              Text(
                                'Spécifications techniques',
                                style: TextStyle(
                                  fontWeight: FontWeight.w600,
                                  color: Colors.orange.shade700,
                                ),
                              ),
                            ],
                          ),
                          const SizedBox(height: 12),
                          TextField(
                            controller: marqueController,
                            decoration: const InputDecoration(
                              labelText: 'Marque',
                              border: OutlineInputBorder(),
                              prefixIcon: Icon(Icons.branding_watermark),
                              filled: true,
                              fillColor: Colors.white,
                            ),
                          ),
                          const SizedBox(height: 8),
                          Row(
                            children: [
                              Expanded(
                                child: TextField(
                                  controller: ramController,
                                  decoration: const InputDecoration(
                                    labelText: 'RAM',
                                    border: OutlineInputBorder(),
                                    prefixIcon: Icon(Icons.memory),
                                    filled: true,
                                    fillColor: Colors.white,
                                  ),
                                ),
                              ),
                              const SizedBox(width: 12),
                              Expanded(
                                child: TextField(
                                  controller: memoireInterneController,
                                  decoration: const InputDecoration(
                                    labelText: 'Mémoire interne',
                                    border: OutlineInputBorder(),
                                    prefixIcon: Icon(Icons.storage),
                                    filled: true,
                                    fillColor: Colors.white,
                                  ),
                                ),
                              ),
                            ],
                          ),
                          const SizedBox(height: 8),
                          TextField(
                            controller: imeiController,
                            decoration: const InputDecoration(
                              labelText: 'IMEI (pour téléphones)',
                              border: OutlineInputBorder(),
                              prefixIcon: Icon(Icons.smartphone),
                              filled: true,
                              fillColor: Colors.white,
                            ),
                          ),
                        ],
                      ),
                    ),
                    const SizedBox(height: 16),

                    // Section Image
                    Container(
                      padding: const EdgeInsets.all(12),
                      decoration: BoxDecoration(
                        color: Colors.blue.shade50,
                        borderRadius: BorderRadius.circular(8),
                        border: Border.all(color: Colors.blue.shade200),
                      ),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Row(
                            children: [
                              Icon(Icons.image, color: Colors.blue.shade700),
                              const SizedBox(width: 8),
                              Text(
                                'Image du produit (optionnel)',
                                style: TextStyle(
                                  fontWeight: FontWeight.w600,
                                  color: Colors.blue.shade700,
                                ),
                              ),
                            ],
                          ),
                          const SizedBox(height: 12),
                          Row(
                            children: [
                              Expanded(
                                child: TextField(
                                  controller: imageController,
                                  decoration: const InputDecoration(
                                    labelText: 'Chemin de l\'image',
                                    border: OutlineInputBorder(),
                                    isDense: true,
                                  ),
                                  readOnly: true,
                                ),
                              ),
                              const SizedBox(width: 8),
                              ElevatedButton.icon(
                                onPressed: () async {
                                  final result = await FilePicker.platform
                                      .pickFiles(type: FileType.image);
                                  if (result != null &&
                                      result.files.single.path != null) {
                                    setDialogState(() {
                                      pickedImage =
                                          File(result.files.single.path!);
                                      imageController.text = pickedImage!.path;
                                    });
                                  }
                                },
                                icon: const Icon(Icons.folder_open, size: 16),
                                label: const Text('Choisir'),
                                style: ElevatedButton.styleFrom(
                                  padding: const EdgeInsets.all(12),
                                ),
                              ),
                            ],
                          ),
                          const SizedBox(height: 12),

                          // Aperçu de l'image
                          if (pickedImage != null)
                            Center(
                              child: Container(
                                height: 100,
                                width: 100,
                                decoration: BoxDecoration(
                                  borderRadius: BorderRadius.circular(8),
                                  border:
                                      Border.all(color: Colors.grey.shade300),
                                ),
                                child: ClipRRect(
                                  borderRadius: BorderRadius.circular(8),
                                  child: Image.file(pickedImage!,
                                      fit: BoxFit.cover),
                                ),
                              ),
                            ),
                        ],
                      ),
                    ),
                    const SizedBox(height: 16),

                    // Aperçu QR Code
                    if (qrPreviewData != null)
                      Container(
                        padding: const EdgeInsets.all(12),
                        decoration: BoxDecoration(
                          color: Colors.green.shade50,
                          borderRadius: BorderRadius.circular(8),
                          border: Border.all(color: Colors.green.shade200),
                        ),
                        child: Column(
                          children: [
                            Row(
                              children: [
                                Icon(Icons.qr_code_2,
                                    color: Colors.green.shade700),
                                const SizedBox(width: 8),
                                Text(
                                  'Aperçu du QR Code',
                                  style: TextStyle(
                                    fontWeight: FontWeight.w600,
                                    color: Colors.green.shade700,
                                  ),
                                ),
                              ],
                            ),
                            const SizedBox(height: 12),
                            Center(
                              child: Container(
                                padding: const EdgeInsets.all(8),
                                decoration: BoxDecoration(
                                  color: Colors.white,
                                  borderRadius: BorderRadius.circular(8),
                                ),
                                child: QrImageView(
                                  data: qrPreviewData!,
                                  version: QrVersions.auto,
                                  size: 80,
                                  backgroundColor: Colors.white,
                                ),
                              ),
                            ),
                            const SizedBox(height: 8),
                            Text(
                              'Réf: ${autoGenerateReference ? _generateUniqueReference() : referenceController.text.trim()}',
                              style: const TextStyle(
                                  fontSize: 10, color: Colors.grey),
                            ),
                          ],
                        ),
                      ),
                  ],
                );
              },
            ),
          ),
        ),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            child: const Text('Annuler'),
          ),
          ElevatedButton.icon(
            onPressed: () async {
              final name = nameController.text.trim();
              final price = double.tryParse(priceController.text.trim()) ?? 0.0;
              final stock = int.tryParse(stockController.text.trim()) ?? 0;

              if (name.isEmpty || price <= 0) {
                Get.snackbar('Erreur', 'Nom et prix sont obligatoires');
                return;
              }

              // Vérification de la référence
              String finalReference;
              if (autoGenerateReference) {
                finalReference = _generateUniqueReference();
              } else {
                finalReference = referenceController.text.trim();
                if (finalReference.isEmpty) {
                  Get.snackbar('Erreur', 'La référence est obligatoire');
                  return;
                }

                final existingProduct = await _productDatabase
                    .getProductByReference(finalReference);
                if (existingProduct != null) {
                  Get.snackbar('Erreur', 'Cette référence existe déjà');
                  return;
                }
              }

              // Gérer le point de vente
              int? pointDeVenteId;
              String? finalPointDeVenteNom;

              if (showAddNewPoint &&
                  newPointDeVenteController.text.trim().isNotEmpty) {
                finalPointDeVenteNom = newPointDeVenteController.text.trim();
              } else if (selectedPointDeVente != null &&
                  selectedPointDeVente != 'Aucun') {
                finalPointDeVenteNom = selectedPointDeVente;
              }

              if (finalPointDeVenteNom != null) {
                pointDeVenteId = await _productDatabase
                    .getOrCreatePointDeVenteByNom(finalPointDeVenteNom);
              }
              // Si "Aucun" est sélectionné, pointDeVenteId reste null

              try {
                final qrPath = await _generateAndSaveQRCode(finalReference);

                final product = Product(
                  name: name,
                  price: price,
                  image: imageController.text,
                  category: selectedCategory,
                  description: descriptionController.text.trim(),
                  stock: stock,
                  qrCode: qrPath,
                  reference: finalReference,
                  marque: marqueController.text.trim(),
                  ram: ramController.text.trim(),
                  memoireInterne: memoireInterneController.text.trim(),
                  imei: imeiController.text.trim(),
                  pointDeVenteId: pointDeVenteId, // Peut être null si "Aucun"
                );

                await _productDatabase.createProduct(product);
                Get.back();
                Get.snackbar(
                  'Succès',
                  'Produit ajouté avec succès!\nRéférence: $finalReference${finalPointDeVenteNom != null ? '\nPoint de vente: $finalPointDeVenteNom' : ''}',
                  backgroundColor: Colors.green,
                  colorText: Colors.white,
                  duration: const Duration(seconds: 4),
                  icon: const Icon(Icons.check_circle, color: Colors.white),
                );
                _loadProducts();
                _loadPointsDeVente();
              } catch (e) {
                Get.snackbar('Erreur', 'Ajout du produit échoué: $e');
              }
            },
            icon: const Icon(Icons.save),
            label: const Text('Ajouter le produit'),
            style: ElevatedButton.styleFrom(
              backgroundColor: Colors.green,
              foregroundColor: Colors.white,
              padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 12),
            ),
          ),
        ],
      ),
    );
  }

  // === FONCTIONS DE SCAN POUR ATTRIBUTION POINT DE VENTE ===
  String? _getColumnValue(
    List<Data?> row, Map<String, int> mapping, String field) {
  if (!mapping.containsKey(field)) return null;

  int columnIndex = mapping[field]!;
  if (columnIndex >= row.length || row[columnIndex]?.value == null)
    return null;

  var cellValue = row[columnIndex]!.value;
  
  // 🔥 TRAITEMENT SPÉCIAL POUR IMEI
  if (field == 'imei') {
    print('🔍 IMEI brut depuis Excel: $cellValue (${cellValue.runtimeType})');
    
    // Si c'est un nombre (notation scientifique)
    if (cellValue is num) {
      // Convertir directement en entier pour éviter les décimales
      String imeiStr = cellValue.toInt().toString();
      print('🔄 IMEI converti depuis num: $imeiStr');
      return imeiStr;
    }
    
    // Si c'est déjà un String
    String strValue = cellValue.toString().trim();
    
    // Gérer la notation scientifique dans les strings
    if (strValue.contains('E') || strValue.contains('e')) {
      try {
        // Remplacer virgule par point et parser
        String normalized = strValue.replaceAll(',', '.');
        double numValue = double.parse(normalized);
        String imeiStr = numValue.toInt().toString();
        print('🔄 IMEI converti depuis notation scientifique: $strValue → $imeiStr');
        return imeiStr;
      } catch (e) {
        print('❌ Erreur conversion IMEI: $e');
        return null;
      }
    }
    
    return strValue;
  }
  
  // Pour les autres champs
  return cellValue.toString().trim();
}

  void _startPointDeVenteAssignmentScanning() {
    if (_isScanning) return;

    // Vérifier que l'utilisateur a un point de vente
    if (_userController.pointDeVenteId <= 0) {
      Get.snackbar(
        'Erreur',
        'Vous n\'avez pas de point de vente assigné. Contactez un administrateur.',
        snackPosition: SnackPosition.BOTTOM,
        backgroundColor: Colors.red.shade600,
        colorText: Colors.white,
        duration: const Duration(seconds: 4),
        icon: const Icon(Icons.error, color: Colors.white),
      );
      return;
    }

    setState(() {
      _isScanning = true;
    });

    Get.to(() => _buildAssignmentScannerPage())?.then((_) {
      setState(() {
        _isScanning = false;
      });
    });
  }
Map<String, dynamic> _normalizeRowData(
    List<Data?> row, Map<String, int> mapping, int rowIndex) {
  final normalizedData = <String, dynamic>{};

  // Fonction interne pour nettoyer et normaliser les valeurs
  String? _cleanValue(String? value) {
    if (value == null) return null;
    return value.toString().trim();
  }

  // Fonction simple pour les nombres
  double? _normalizeNumber(String? value) {
    if (value == null || value.isEmpty) return null;
    final cleaned = value.replaceAll(',', '.').replaceAll(RegExp(r'\s+'), '');
    final numericString = cleaned.replaceAll(RegExp(r'[^0-9.]'), '');
    return double.tryParse(numericString);
  }

  // Normalisation du nom
  if (mapping.containsKey('name')) {
    final name = _cleanValue(_getColumnValue(row, mapping, 'name'));
    if (name != null && name.isNotEmpty) {
      normalizedData['name'] = name;
    }
  }

  // Normalisation du prix
  if (mapping.containsKey('price')) {
    final priceValue = _cleanValue(_getColumnValue(row, mapping, 'price'));
    final price = _normalizeNumber(priceValue);
    if (price != null && price > 0) {
      normalizedData['price'] = price;
      print('✅ Prix normalisé: $price');
    }
  }

  // Normalisation de la référence
  if (mapping.containsKey('reference')) {
    final reference = _cleanValue(_getColumnValue(row, mapping, 'reference'));
    if (reference != null && reference.isNotEmpty) {
      normalizedData['reference'] = reference;
    } else {
      normalizedData['reference'] = _generateUniqueReference();
    }
  }

  // Normalisation de la catégorie
  if (mapping.containsKey('category')) {
    final category = _cleanValue(_getColumnValue(row, mapping, 'category'));
    normalizedData['category'] = category ?? 'Non catégorisé';
  } else {
    normalizedData['category'] = 'Non catégorisé';
  }

  // Normalisation de la marque
  if (mapping.containsKey('marque')) {
    final marque = _cleanValue(_getColumnValue(row, mapping, 'marque'));
    if (marque != null && marque.isNotEmpty) {
      normalizedData['marque'] = marque;
    }
  }

  // Normalisation de la RAM
  if (mapping.containsKey('ram')) {
    final ram = _cleanValue(_getColumnValue(row, mapping, 'ram'));
    if (ram != null && ram.isNotEmpty) {
      final ramValue = ram.replaceAll('GB', 'Go').replaceAll('go', 'Go');
      normalizedData['ram'] = ramValue;
    }
  }

  // Normalisation de la mémoire interne
  if (mapping.containsKey('memoire_interne')) {
    final memoire = _cleanValue(_getColumnValue(row, mapping, 'memoire_interne'));
    if (memoire != null && memoire.isNotEmpty) {
      final memoireValue = memoire.replaceAll('GB', 'Go').replaceAll('go', 'Go');
      normalizedData['memoire_interne'] = memoireValue;
    }
  }

  // 🔥 IMPORTANT: Normaliser l'IMEI EN PREMIER avant de gérer le stock
// 🔥 Normalisation de l'IMEI (simplifié car _getColumnValue le gère maintenant)
String? imeiValue;
if (mapping.containsKey('imei')) {
  final imei = _cleanValue(_getColumnValue(row, mapping, 'imei'));
  
  if (imei != null && imei.isNotEmpty) {
    // Nettoyer les espaces et tirets
    String cleanedImei = imei.replaceAll(RegExp(r'[\s-]'), '');
    
    // Vérifier que c'est bien un IMEI valide (10-15 chiffres)
    if (cleanedImei.length >= 10 && 
        cleanedImei.length <= 15 && 
        RegExp(r'^\d+$').hasMatch(cleanedImei)) {
      
      imeiValue = cleanedImei.length > 15 
          ? cleanedImei.substring(0, 15) 
          : cleanedImei;
      
      normalizedData['imei'] = imeiValue;
      print('✅ IMEI valide enregistré: $imeiValue');
    } else {
      print('⚠️ IMEI invalide ignoré: "$cleanedImei" (longueur: ${cleanedImei.length})');
    }
  }
}

// Le reste du code reste identique...

  // Normalisation du point de vente
  if (mapping.containsKey('point_de_vente')) {
    final pv = _cleanValue(_getColumnValue(row, mapping, 'point_de_vente'));
    if (pv != null && pv.isNotEmpty) {
      normalizedData['point_de_vente'] = pv.replaceAll(RegExp(r'\s+'), ' ').trim();
    }
  }

  // Valeurs par défaut
  normalizedData['description'] = '';
  
  // 🎯 LOGIQUE CRITIQUE: Gestion du stock selon la présence d'IMEI
  // On vérifie si normalizedData['imei'] existe ET n'est pas vide
  if (normalizedData.containsKey('imei') && 
      normalizedData['imei'] != null && 
      normalizedData['imei'].toString().isNotEmpty) {
    // Produit avec IMEI → stock forcé à 1
    normalizedData['stock'] = 1;
    print('🔒 Stock forcé à 1 car IMEI présent: ${normalizedData['imei']}');
  } else {
    // Produit sans IMEI → utiliser le stock du fichier
    if (mapping.containsKey('stock')) {
      final stockValue = _cleanValue(_getColumnValue(row, mapping, 'stock'));

// Try parsing as int first
int? stock = int.tryParse(stockValue ?? '');

// If parsing as int fails, try parsing as double and convert to int
if (stock == null && stockValue != null && stockValue.isNotEmpty) {
  final doubleValue = double.tryParse(stockValue);
  if (doubleValue != null) {
    stock = doubleValue.toInt();
  }
}

// Final fallback: ensure at least 1
stock ??= 1;

// Never allow 0 or negative values
normalizedData['stock'] = stock > 0 ? stock : 1;

      print('📦 Stock depuis Excel: $stock (pas d\'IMEI)');
    } else {
      normalizedData['stock'] = 1;
      print('📦 Stock par défaut: 1 (pas d\'IMEI, pas de colonne stock)');
    }
  }

  // Validation des données obligatoires
  if (normalizedData['name'] == null || normalizedData['price'] == null) {
    throw Exception(
        'Ligne ${rowIndex + 1}: Données obligatoires manquantes (nom ou prix)');
  }

  return normalizedData;
}
Map<String, int> _mapHeaders(List<Data?> headerRow) {
  Map<String, int> columnMapping = {};

  for (int i = 0; i < headerRow.length; i++) {
    if (headerRow[i]?.value == null) continue;

    String header = headerRow[i]!.value.toString().trim().toUpperCase();

    print('📋 En-tête colonne $i: "$header"');

    // Nom du produit
    if ((header.contains('NOM') && header.contains('PRODUIT')) || header == 'NOM') {
      columnMapping['name'] = i;
      print('   ✅ Mappé vers name');
    } 
    // Référence
    else if (header.contains('REFERENCE')) {
      columnMapping['reference'] = i;
      print('   ✅ Mappé vers reference');
    } 
    // Catégorie - VERSION TOLÉRANTE ⭐
    else if (header.contains('CATEG') && header.contains('PRODUIT')) {
      columnMapping['category'] = i;
      print('   ✅ Mappé vers category');
    } 
    // Marque
    else if (header == 'MARQUE' || header == 'BRAND') {
      columnMapping['marque'] = i;
      print('   ✅ Mappé vers marque');
    } 
    // RAM
    else if (header == 'RAM' || header.contains('MEMOIRE RAM')) {
      columnMapping['ram'] = i;
      print('   ✅ Mappé vers ram');
    } 
    // Mémoire interne
    else if (header == 'INTERNE' || header.contains('MEMOIRE INTERNE') || header.contains('STOCKAGE')) {
      columnMapping['memoire_interne'] = i;
      print('   ✅ Mappé vers memoire_interne');
    } 
    // IMEI
    else if (header == 'IMEI' || header.contains('NUMERO IMEI')) {
      columnMapping['imei'] = i;
      print('   ✅ Mappé vers imei');
    } 
    // Prix
    else if (header == 'PRIX' || header == 'PRICE') {
      columnMapping['price'] = i;
      print('   ✅ Mappé vers price');
    } 
    // Stock
    else if (header == 'STOCK' || header == 'QUANTITY' || header == 'QTE') {
      columnMapping['stock'] = i;
      print('   ✅ Mappé vers stock');
    } 
    // Point de vente
    else if (header.contains('BOUTIQUE') || header.contains('POINT') || header == 'MAGASIN') {
      columnMapping['point_de_vente'] = i;
      print('   ✅ Mappé vers point_de_vente');
    } 
    else {
      print('   ⚠️ Non reconnu');
    }
  }

  print('\n🎯 MAPPING FINAL: $columnMapping\n');
  return columnMapping;
}

  Widget _buildAssignmentScannerPage() {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Scanner pour Attribution'),
        backgroundColor: Colors.orange.shade700,
        foregroundColor: Colors.white,
        leading: IconButton(
          icon: const Icon(Icons.close),
          onPressed: () {
            _qrController?.dispose();
            Get.back();
          },
        ),
        actions: [
          IconButton(
            icon: const Icon(Icons.flash_on),
            onPressed: () async {
              await _qrController?.toggleFlash();
            },
          ),
          IconButton(
            icon: const Icon(Icons.flip_camera_ios),
            onPressed: () async {
              await _qrController?.flipCamera();
            },
          ),
        ],
      ),
      body: Stack(
        children: [
          // Scanner view
          QRView(
            key: _qrKey,
            onQRViewCreated: _onAssignmentQRViewCreated,
            overlay: QrScannerOverlayShape(
              borderColor: Colors.orange,
              borderRadius: 10,
              borderLength: 30,
              borderWidth: 10,
              cutOutSize: 250,
            ),
          ),

          // Instructions overlay
          Positioned(
            bottom: 100,
            left: 20,
            right: 20,
            child: Container(
              padding: const EdgeInsets.all(16),
              decoration: BoxDecoration(
                color: Colors.black.withOpacity(0.7),
                borderRadius: BorderRadius.circular(12),
              ),
              child: Column(
                mainAxisSize: MainAxisSize.min,
                children: [
                  Icon(Icons.assignment,
                      color: Colors.orange.shade300, size: 40),
                  const SizedBox(height: 8),
                  const Text(
                    'Scanner l\'IMEI pour assigner au point de vente',
                    style: TextStyle(
                      color: Colors.white,
                      fontSize: 16,
                      fontWeight: FontWeight.w500,
                    ),
                    textAlign: TextAlign.center,
                  ),
                  const SizedBox(height: 4),
                  Text(
                    'Point de vente: ${_userController.pointDeVenteDesignation}',
                    style: TextStyle(
                      color: Colors.orange.shade300,
                      fontSize: 14,
                      fontWeight: FontWeight.bold,
                    ),
                    textAlign: TextAlign.center,
                  ),
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }

  void _onAssignmentQRViewCreated(QRViewController controller) {
    _qrController = controller;

    controller.scannedDataStream.listen((scanData) {
      if (scanData.code != null && scanData.code!.isNotEmpty) {
        // Pauser le scanner pour éviter les scans multiples
        controller.pauseCamera();

        // Fermer la page du scanner
        Get.back();

        // Traiter le résultat
        _assignProductToUserPointDeVente(scanData.code!);
      }
    });
  }

  Future<void> _assignProductToUserPointDeVente(String scannedImei) async {
    if (_isAssigning) return;

    setState(() {
      _isAssigning = true;
    });

    try {
      // Montrer un indicateur de chargement
      Get.dialog(
        AlertDialog(
          content: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              CircularProgressIndicator(color: Colors.orange.shade700),
              const SizedBox(height: 16),
              const Text('Recherche du produit...'),
              const SizedBox(height: 8),
              Text(
                'IMEI: $scannedImei',
                style: TextStyle(
                  fontSize: 12,
                  color: Colors.grey.shade600,
                  fontFamily: 'monospace',
                ),
              ),
            ],
          ),
        ),
        barrierDismissible: false,
      );

      // Attendre un court instant pour l'effet visuel
      await Future.delayed(const Duration(milliseconds: 300));

      // Chercher le produit avec l'IMEI scanné
      Product? foundProduct =
          await _productDatabase.getProductByIMEI(scannedImei);

      // Fermer l'indicateur de chargement
      Get.back();

      if (foundProduct == null) {
        _showProductNotFoundDialog(scannedImei);
        return;
      }

      // Vérifier si le produit a déjà le bon point de vente
      if (foundProduct.pointDeVenteId == _userController.pointDeVenteId) {
        _showAlreadyAssignedDialog(foundProduct);
        return;
      }

      // Assigner le point de vente de l'utilisateur au produit
      // final updatedProduct = Product(
      //   id: foundProduct.id,
      //   name: foundProduct.name,
      //   price: foundProduct.price,
      //   image: foundProduct.image,
      //   category: foundProduct.category,
      //   description: foundProduct.description,
      //   stock: foundProduct.stock,
      //   qrCode: foundProduct.qrCode,
      //   reference: foundProduct.reference,
      //   marque: foundProduct.marque,
      //   ram: foundProduct.ram,
      //   memoireInterne: foundProduct.memoireInterne,
      //   imei: foundProduct.imei,
      //   pointDeVenteId:
      //       _userController.pointDeVenteId, // Nouveau point de vente
      // );
          await _appDatabase.createDemandeTransfert(
                                    produitId: foundProduct.id!,
                                    pointDeVenteSourceId: _userController.pointDeVenteId,
                                    pointDeVenteDestinationId: _userController.pointDeVenteId,
                                    demandeurId: _userController.userId,
                                    quantite: foundProduct.stock,
                                    notes: 'produit non assigner',
                                  );
      // await _productDatabase.updateProduct(updatedProduct);

      // Recharger les produits pour refléter les changements
      _loadProducts();

      // Afficher le dialogue de succès
      _showAssignmentSuccessDialog(foundProduct);
    } catch (e) {
      // Fermer l'indicateur de chargement si il est encore ouvert
      if (Get.isDialogOpen!) Get.back();

      Get.snackbar(
        'Erreur',
        'Une erreur est survenue: ${e.toString()}',
        snackPosition: SnackPosition.BOTTOM,
        backgroundColor: Colors.red.shade600,
        colorText: Colors.white,
        duration: const Duration(seconds: 3),
      );
    } finally {
      setState(() {
        _isAssigning = false;
      });
    }
  }

  void _showAssignmentSuccessDialog(Product product) {
    Get.dialog(
      AlertDialog(
        title: Row(
          children: [
            Container(
              padding: const EdgeInsets.all(8),
              decoration: BoxDecoration(
                color: Colors.green.shade100,
                borderRadius: BorderRadius.circular(8),
              ),
              child: Icon(Icons.check_circle, color: Colors.green.shade700),
            ),
            const SizedBox(width: 12),
            const Expanded(child: Text( 'demande attribution réussie en attente de validation!')),
          ],
        ),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text(
              product.name,
              style: const TextStyle(
                fontSize: 16,
                fontWeight: FontWeight.bold,
              ),
            ),
            const SizedBox(height: 8),
            Text('IMEI: ${product.imei}'),
            Text('Prix: ${NumberFormat('#,##0.00', 'fr_FR').format(product.price)} MGA'),
            const SizedBox(height: 12),
            Container(
              padding: const EdgeInsets.all(8),
              decoration: BoxDecoration(
                color: Colors.green.shade50,
                borderRadius: BorderRadius.circular(8),
              ),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  const Text(
                    'Produit assigné au point de vente:',
                    style: TextStyle(fontWeight: FontWeight.w500),
                  ),
                  const SizedBox(height: 4),
                  Text(
                    _userController.pointDeVenteDesignation,
                    style: TextStyle(
                      fontSize: 16,
                      fontWeight: FontWeight.bold,
                      color: Colors.green.shade700,
                    ),
                  ),
                ],
              ),
            ),
          ],
        ),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            child: const Text('Fermer'),
          ),
          ElevatedButton(
            onPressed: () {
              Get.back();
              _startPointDeVenteAssignmentScanning(); // Scanner un autre produit
            },
            style: ElevatedButton.styleFrom(
              backgroundColor: Colors.orange.shade700,
              foregroundColor: Colors.white,
            ),
            child: const Text('Scanner encore'),
          ),
        ],
      ),
    );
  }

  void _showAlreadyAssignedDialog(Product product) {
    Get.dialog(
      AlertDialog(
        title: Row(
          children: [
            Icon(Icons.info, color: Colors.blue.shade600),
            const SizedBox(width: 8),
            const Text('Déjà assigné'),
          ],
        ),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text(
              product.name,
              style: const TextStyle(
                fontSize: 16,
                fontWeight: FontWeight.bold,
              ),
            ),
            const SizedBox(height: 8),
            Text('IMEI: ${product.imei}'),
            const SizedBox(height: 12),
            Container(
              padding: const EdgeInsets.all(8),
              decoration: BoxDecoration(
                color: Colors.blue.shade50,
                borderRadius: BorderRadius.circular(8),
              ),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  const Text(
                    'Ce produit est déjà assigné au point de vente:',
                    style: TextStyle(fontWeight: FontWeight.w500),
                  ),
                  const SizedBox(height: 4),
                  Text(
                    _userController.pointDeVenteDesignation,
                    style: TextStyle(
                      fontSize: 16,
                      fontWeight: FontWeight.bold,
                      color: Colors.blue.shade700,
                    ),
                  ),
                ],
              ),
            ),
          ],
        ),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            child: const Text('Fermer'),
          ),
          ElevatedButton(
            onPressed: () {
              Get.back();
              _startPointDeVenteAssignmentScanning(); // Scanner un autre produit
            },
            style: ElevatedButton.styleFrom(
              backgroundColor: Colors.orange.shade700,
              foregroundColor: Colors.white,
            ),
            child: const Text('Scanner encore'),
          ),
        ],
      ),
    );
  }

  void _showProductNotFoundDialog(String scannedImei) {
    Get.dialog(
      AlertDialog(
        title: Row(
          children: [
            Icon(Icons.search_off, color: Colors.red.shade600),
            const SizedBox(width: 8),
            const Text('Produit non trouvé'),
          ],
        ),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            const Text('Aucun produit trouvé avec cet IMEI:'),
            const SizedBox(height: 8),
            Container(
              padding: const EdgeInsets.all(8),
              decoration: BoxDecoration(
                color: Colors.grey.shade100,
                borderRadius: BorderRadius.circular(4),
              ),
              child: Text(
                scannedImei,
                style: const TextStyle(
                  fontFamily: 'monospace',
                  fontWeight: FontWeight.bold,
                ),
              ),
            ),
            const SizedBox(height: 12),
            Text(
              'Vérifiez que l\'IMEI est correct ou que le produit existe dans la base de données.',
              style: TextStyle(
                fontSize: 12,
                color: Colors.grey.shade600,
              ),
            ),
          ],
        ),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            child: const Text('Fermer'),
          ),
          ElevatedButton(
            onPressed: () {
              Get.back();
              _startPointDeVenteAssignmentScanning();
            },
            style: ElevatedButton.styleFrom(
              backgroundColor: Colors.orange.shade700,
              foregroundColor: Colors.white,
            ),
            child: const Text('Scanner à nouveau'),
          ),
        ],
      ),
    );
  }

  Widget _buildAssignmentScanCard() {
    final isMobile = MediaQuery.of(context).size.width < 600;

    return Card(
      elevation: 2,
      margin: const EdgeInsets.only(bottom: 8),
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(12),
      ),
      child: Padding(
        padding: const EdgeInsets.all(12.0),
        child: Row(
          children: [
            Container(
              padding: const EdgeInsets.all(8),
              decoration: BoxDecoration(
                color: Colors.orange.shade100,
                borderRadius: BorderRadius.circular(8),
              ),
              child: Icon(
                Icons.assignment,
                color: Colors.orange.shade700,
                size: 20,
              ),
            ),
            const SizedBox(width: 12),
            Expanded(
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  const Text(
                    'Assigner produits à votre point de vente',
                    style: TextStyle(
                      fontSize: 14,
                      fontWeight: FontWeight.w600,
                      color: Color.fromARGB(255, 9, 56, 95),
                    ),
                  ),
                  const SizedBox(height: 4),
                  Text(
                    'Point de vente: ${_userController.pointDeVenteDesignation}',
                    style: TextStyle(
                      fontSize: 12,
                      color: Colors.grey.shade600,
                    ),
                  ),
                ],
              ),
            ),
            ElevatedButton.icon(
              onPressed: (_isScanning ||
                      _isAssigning ||
                      _userController.pointDeVenteId <= 0)
                  ? null
                  : _startPointDeVenteAssignmentScanning,
              icon: (_isScanning || _isAssigning)
                  ? const SizedBox(
                      width: 16,
                      height: 16,
                      child: CircularProgressIndicator(
                        strokeWidth: 2,
                        color: Colors.white,
                      ),
                    )
                  : const Icon(Icons.qr_code_scanner, size: 18),
              label:
                  Text((_isScanning || _isAssigning) ? 'Scan...' : 'Assigner'),
              style: ElevatedButton.styleFrom(
                backgroundColor: (_isScanning ||
                        _isAssigning ||
                        _userController.pointDeVenteId <= 0)
                    ? Colors.grey
                    : Colors.orange.shade700,
                foregroundColor: Colors.white,
                padding:
                    const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
              ),
            ),
          ],
        ),
      ),
    );
  }

  // === FONCTIONS CONSERVÉES DU CODE ORIGINAL ===
  // [Conservez toutes les autres méthodes du code original ici]

  // Réinitialisation de l'état d'import
  void _resetImportState() {
    setState(() {
      _isImporting = false;
      _importProgress = 0.0;
      _importStatusText = '';
    });
  }

  Future<void> _loadPointsDeVente() async {
    try {
      final points = await _productDatabase.getPointsDeVente();
      setState(() {
        _pointsDeVente = points;
        if (points.isNotEmpty) {
          _selectedPointDeVente = points.first['nom'] as String;
        }
      });
    } catch (e) {
      Get.snackbar('Erreur', 'Impossible de charger les points de vente: $e');
    }
  }

  Future<void> _loadProducts() async {
    setState(() => _isLoading = true);

    try {
      await _productDatabase.initDatabase();
      final products = await _productDatabase.getProducts();
      final categories = await _productDatabase.getCategories();

      setState(() {
        _products = products;
        _filteredProducts = products;
        _categories = ['Tous', ...categories];
        _isLoading = false;
      });
    } catch (e) {
      setState(() => _isLoading = false);
      Get.snackbar('Erreur', 'Impossible de charger les produits: $e');
    }
  }

  void _filterProducts() {
    final query = _searchController.text.toLowerCase();

    setState(() {
      _filteredProducts = _products.where((product) {
        final matchesSearch = product.name.toLowerCase().contains(query) ||
            product.description!.toLowerCase().contains(query) ||
            product.reference!.toLowerCase().contains(query);

        final matchesCategory = _selectedCategory == 'Tous' ||
            product.category == _selectedCategory;

        return matchesSearch && matchesCategory;
      }).toList();
    });
  }

  // Méthode pour générer une référence unique
  String _generateUniqueReference() {
    final timestamp = DateTime.now().millisecondsSinceEpoch;
    final randomSuffix = DateTime.now().microsecond.toString().padLeft(6, '0');
    return 'PROD_${timestamp}${randomSuffix}';
  }

  Future<void> _downloadExcelTemplate() async {
    try {
      final excel = Excel.createExcel();
      final sheet = excel['Sheet1'];

      // En-têtes modifiés sans DESCRIPTION et STOCK
      final headers = [
        'ID PRODUITS', // Sera ignoré lors de l'import
        'NOM DU PRODUITS', // name
        'REFERENCE PRODUITS', // reference
        'CATEGORIES PRODUITS', // category
        'MARQUE', // marque
        'RAM', // ram
        'INTERNE', // memoire_interne
        'IMEI', // imei
        'STOCK',
        'PRIX', // price
        'BOUTIQUE', // point_de_vente
      ];

      // Ajouter les en-têtes avec style
      for (int i = 0; i < headers.length; i++) {
        final cell =
            sheet.cell(CellIndex.indexByColumnRow(columnIndex: i, rowIndex: 0));
        cell.value = headers[i];
        cell.cellStyle = CellStyle(
          bold: true,
          backgroundColorHex: '#E8F4FD',
          horizontalAlign: HorizontalAlign.Center,
        );
      }

      // Exemples modifiés sans DESCRIPTION et STOCK
      final examples = [
        [
          '1', // ID PRODUITS (sera ignoré)
          'Smartphone Galaxy S24', // NOM DU PRODUITS
          'SGS24-001', // REFERENCE PRODUITS
          'Téléphone', // CATEGORIES PRODUITS
          'Samsung', // MARQUE
          '8 Go', // RAM
          '256 Go', // INTERNE
          '123456789012345', // IMEI
          '1200.00', // PRIX
          '405A', // BOUTIQUE
        ],
        [
          '2', // ID PRODUITS
          'iPhone 15 Pro', // NOM DU PRODUITS
          'IP15P-001', // REFERENCE PRODUITS
          'Téléphone', // CATEGORIES PRODUITS
          'Apple', // MARQUE
          '8 Go', // RAM
          '512 Go', // INTERNE
          '987654321098765', // IMEI
          '1599.00', // PRIX
          '405B', // BOUTIQUE
        ],
        [
          '3', // ID PRODUITS
          'MacBook Pro 14"', // NOM DU PRODUITS
          'MBP14-001', // REFERENCE PRODUITS
          'Informatique', // CATEGORIES PRODUITS
          'Apple', // MARQUE
          '16 Go', // RAM
          '1 To', // INTERNE
          '', // IMEI (vide pour un ordinateur)
          '2499.00', // PRIX
          'S405A', // BOUTIQUE
        ],
        [
          '4', // ID PRODUITS
          'iPad Air', // NOM DU PRODUITS
          'IPA-001', // REFERENCE PRODUITS
          'Tablette', // CATEGORIES PRODUITS
          'Apple', // MARQUE
          '8 Go', // RAM
          '256 Go', // INTERNE
          '456789123456789', // IMEI
          '699.00', // PRIX
          '405A', // BOUTIQUE
        ],
        [
          '5', // ID PRODUITS
          'Gaming Laptop ROG', // NOM DU PRODUITS
          'ROG-001', // REFERENCE PRODUITS
          'Informatique', // CATEGORIES PRODUITS
          'ASUS', // MARQUE
          '32 Go', // RAM
          '1 To', // INTERNE
          '', // IMEI (vide)
          '1899.00', // PRIX
          '405B', // BOUTIQUE
        ]
      ];

      // Ajouter les exemples
      for (int row = 0; row < examples.length; row++) {
        for (int col = 0; col < examples[row].length; col++) {
          final cell = sheet.cell(
              CellIndex.indexByColumnRow(columnIndex: col, rowIndex: row + 1));
          cell.value = examples[row][col];

          // Style pour les données (prix en gras)
          if (col == 8) {
            // Colonne PRIX
            cell.cellStyle = CellStyle(
              bold: true,
            );
          }
        }
      }

      // Ajuster la largeur des colonnes (sans DESCRIPTION et STOCK)
      sheet.setColWidth(0, 12); // ID PRODUITS
      sheet.setColWidth(1, 25); // NOM DU PRODUITS
      sheet.setColWidth(2, 18); // REFERENCE PRODUITS
      sheet.setColWidth(3, 18); // CATEGORIES PRODUITS
      sheet.setColWidth(4, 15); // MARQUE
      sheet.setColWidth(5, 10); // RAM
      sheet.setColWidth(6, 12); // INTERNE
      sheet.setColWidth(7, 18); // IMEI
      sheet.setColWidth(8, 12); // PRIX
      sheet.setColWidth(9, 12); // BOUTIQUE

      // Ajouter une feuille d'instructions mise à jour
      final instructionSheet = excel['Instructions'];

      final instructions = [
        ['INSTRUCTIONS D\'IMPORTATION'],
        [''],
        ['Format des colonnes:'],
        ['• ID PRODUITS: Numéro d\'identification (ignoré lors de l\'import)'],
        ['• NOM DU PRODUITS: Nom du produit (OBLIGATOIRE)'],
        ['• REFERENCE PRODUITS: Référence unique du produit'],
        ['• CATEGORIES PRODUITS: Catégorie du produit'],
        ['• MARQUE: Marque du produit'],
        ['• RAM: Mémoire RAM (ex: "8 Go", "16 Go")'],
        ['• INTERNE: Stockage interne (ex: "256 Go", "1 To")'],
        ['• IMEI: Numéro IMEI (pour les appareils mobiles)'],
        ['• PRIX: Prix du produit en euros (OBLIGATOIRE)'],
        ['• BOUTIQUE: Code du point de vente'],
        [''],
        ['Remarques importantes:'],
        ['• Les colonnes NOM DU PRODUITS et PRIX sont obligatoires'],
        ['• Si CATEGORIES PRODUITS est vide, "Non catégorisé" sera utilisé'],
        [
          '• Si REFERENCE PRODUITS est vide, une référence sera générée automatiquement'
        ],
        ['• Le stock sera automatiquement initialisé à 1 pour chaque produit'],
        ['• La description sera automatiquement vide pour chaque produit'],
        ['• Les colonnes peuvent être dans n\'importe quel ordre'],
        ['• Vous pouvez supprimer les colonnes non utilisées'],
        [''],
        ['Formats acceptés:'],
        ['• PRIX: 1200.00 ou 1200,00 ou 1200'],
        ['• RAM/INTERNE: Texte libre (ex: "8 Go", "256 Go", "1 To")'],
      ];

      for (int i = 0; i < instructions.length; i++) {
        final cell = instructionSheet
            .cell(CellIndex.indexByColumnRow(columnIndex: 0, rowIndex: i));
        cell.value = instructions[i][0];

        if (i == 0) {
          // Titre
          cell.cellStyle = CellStyle(
            bold: true,
            fontSize: 16,
            backgroundColorHex: '#4CAF50',
            fontColorHex: '#FFFFFF',
          );
        } else if (instructions[i][0].startsWith('•')) {
          // Points de liste
          cell.cellStyle = CellStyle(
            italic: true,
          );
        } else if (instructions[i][0].endsWith(':')) {
          // Sous-titres
          cell.cellStyle = CellStyle(
            bold: true,
            backgroundColorHex: '#F5F5F5',
          );
        }
      }

      // Ajuster la largeur de la colonne instructions
      instructionSheet.setColWidth(0, 80);

      final bytes = excel.save();

      if (bytes == null) {
        Get.snackbar('Erreur', 'Impossible de créer le fichier modèle');
        return;
      }

      final String? outputFile = await FilePicker.platform.saveFile(
        fileName: 'modele_import_produits_v3.xlsx',
        allowedExtensions: ['xlsx'],
        type: FileType.custom,
      );

      if (outputFile != null) {
        try {
          await File(outputFile).writeAsBytes(bytes);
          Get.snackbar(
            'Succès',
            'Modèle téléchargé avec succès\n$outputFile\n\nConsultez l\'onglet "Instructions" pour plus d\'informations.',
            duration: const Duration(seconds: 6),
            backgroundColor: Colors.green,
            colorText: Colors.white,
          );
        } catch (e) {
          Get.snackbar('Erreur', 'Impossible d\'écrire le fichier: $e');
        }
      }
    } catch (e) {
      Get.snackbar('Erreur', 'Erreur lors de la création du modèle: $e');
      debugPrint('Erreur création modèle Excel: $e');
    }
  }

// Détecter si une valeur semble être un format de date/temps suspect
  bool _isSuspiciousDateFormat(dynamic value) {
    if (value == null) return false;

    String valueStr = value.toString();

    // Détecter les formats de date suspects qui devraient être des nombres
    if (valueStr.contains('-') && valueStr.contains(':')) {
      // Format DateTime détecté
      print('🔍 Format DateTime suspect: $valueStr');
      return true;
    }

    // Détecter les très grands nombres (timestamps en millisecondes)
    if (valueStr.length > 10 && !valueStr.contains('.')) {
      double? numValue = double.tryParse(valueStr);
      if (numValue != null && numValue > 10000000000) {
        print('🔍 Grand nombre suspect: $valueStr');
        return true;
      }
    }

    return false;
  }

// Identifier les colonnes qui devraient contenir des nombres
  List<int> _identifyNumberColumns(List<Data?> headerRow) {
    List<int> numberColumns = [];

    for (int i = 0; i < headerRow.length; i++) {
      if (headerRow[i]?.value == null) continue;

      String header = headerRow[i]!.value.toString().trim().toUpperCase();

      // Identifier les en-têtes qui correspondent à des valeurs numériques
      if (_isNumericHeader(header)) {
        numberColumns.add(i);
        print('📊 Colonne numérique: "$header" (index $i)');
      }
    }

    return numberColumns;
  }

// Vérifier si un en-tête correspond à une colonne numérique
  bool _isNumericHeader(String header) {
    List<String> numericHeaders = [
      'PRIX',
      'PRICE',
      'COST',
      'COUT',
      'MONTANT',
      'AMOUNT',
      'TOTAL',
      'QUANTITE',
      'QUANTITY',
      'QTE',
      'STOCK',
      'NOMBRE',
      'NUMBER',
      'TAILLE',
      'SIZE',
      'POIDS',
      'WEIGHT',
      'RAM',
      'MEMOIRE',
      'STORAGE',
      'STOCKAGE'
    ];

    return numericHeaders.any((keyword) => header.contains(keyword));
  }

// Fonction de débogage pour analyser le fichier Excel
  void _debugExcelFile(Excel excel) {
    print('=== DEBUG EXCEL FILE ===');
    print('Nombre de feuilles: ${excel.tables.length}');

    for (var sheetName in excel.tables.keys) {
      print('Feuille: $sheetName');
      var sheet = excel.tables[sheetName]!;
      print('Nombre de lignes: ${sheet.rows.length}');

      if (sheet.rows.isNotEmpty) {
        print('En-têtes (première ligne):');
        for (int i = 0; i < sheet.rows[0].length; i++) {
          var cellValue = sheet.rows[0][i]?.value;
          print('  Colonne $i: "$cellValue" (${cellValue.runtimeType})');
        }

        if (sheet.rows.length > 1) {
          print('Première ligne de données:');
          for (int i = 0; i < sheet.rows[1].length; i++) {
            var cellValue = sheet.rows[1][i]?.value;
            print('  Colonne $i: "$cellValue"');
          }
        }
      }
    }
    print('=== FIN DEBUG ===');
  }

  Excel _fixExcelNumberFormats(Excel excel) {
    print('🔧 Correction des formats de cellules Excel...');

    for (var sheetName in excel.tables.keys) {
      print('📋 Traitement de la feuille: $sheetName');
      var sheet = excel.tables[sheetName]!;

      if (sheet.rows.isEmpty) continue;

      // Analyser la première ligne pour identifier les colonnes de prix/nombres
      List<int> numberColumns = _identifyNumberColumns(sheet.rows[0]);
      print('🔢 Colonnes numériques détectées: $numberColumns');

      // Corriger chaque ligne de données (ignorer la ligne d'en-tête)
      for (int rowIndex = 1; rowIndex < sheet.rows.length; rowIndex++) {
        var row = sheet.rows[rowIndex];

        for (int colIndex in numberColumns) {
          if (colIndex < row.length && row[colIndex] != null) {
            var cell = row[colIndex]!;
            var originalValue = cell.value;

            // Détecter si la cellule a un format de date/temps suspect
            if (_isSuspiciousDateFormat(originalValue)) {
              print(
                  '⚠️ Cellule suspecte détectée en ($rowIndex, $colIndex): $originalValue');

              // Convertir la valeur corrompue en nombre standard
              var correctedValue = _convertSuspiciousValue(originalValue);
              if (correctedValue != null) {
                print('✅ Correction: $originalValue → $correctedValue');

                // Créer une nouvelle cellule avec la valeur corrigée
                excel.updateCell(
                    sheetName,
                    CellIndex.indexByColumnRow(
                        columnIndex: colIndex, rowIndex: rowIndex),
                    correctedValue);
              }
            }
          }
        }
      }
    }

    print('✅ Correction des formats terminée');
    return excel;
  }

  double? _convertSuspiciousValue(dynamic suspiciousValue) {
    if (suspiciousValue == null) return null;

    String valueStr = suspiciousValue.toString();

    // Cas 1: Format DateTime (ex: "3953-06-05T00:00:00.000")
    if (valueStr.contains('-') && valueStr.contains(':')) {
      return _convertDateTimeToNumber(valueStr);
    }

    // Cas 2: Grand nombre (ex: "39530605000000")
    if (valueStr.length > 10) {
      return _convertLargeNumberToPrice(valueStr);
    }

    return null;
  }

// Convertir un format DateTime en nombre
  double? _convertDateTimeToNumber(String dateTimeStr) {
    try {
      print('🔄 Conversion DateTime: $dateTimeStr');

      // Nettoyer la chaîne
      String cleanDateString = dateTimeStr.replaceAll('+', '');
      final dateTime = DateTime.parse(cleanDateString);

      // Excel epoch: 1er janvier 1900
      final excelEpoch = DateTime(1900, 1, 1);

      // Calculer le nombre de jours depuis l'epoch Excel
      final daysDifference = dateTime.difference(excelEpoch).inDays;

      // Appliquer la correction pour le bug Excel (+2)
      final correctedValue = daysDifference + 2;

      print('→ Jours calculés: $daysDifference → Corrigé: $correctedValue');

      if (correctedValue > 0 && correctedValue < 100000000) {
        return correctedValue.toDouble();
      }
    } catch (e) {
      print('❌ Erreur conversion DateTime: $e');
    }

    return null;
  }

// Convertir un grand nombre en prix
  double? _convertLargeNumberToPrice(String largeNumberStr) {
    try {
      print('🔄 Conversion grand nombre: $largeNumberStr');

      double? numValue = double.tryParse(largeNumberStr);
      if (numValue == null) return null;

      // Si le nombre se termine par 000000 (microsecondes), les supprimer
      if (largeNumberStr.endsWith('000000') && largeNumberStr.length > 10) {
        String withoutMicros =
            largeNumberStr.substring(0, largeNumberStr.length - 6);
        double? daysSinceExcel = double.tryParse(withoutMicros);

        if (daysSinceExcel != null &&
            daysSinceExcel > 1000 &&
            daysSinceExcel < 10000000) {
          // Appliquer la correction du décalage Excel (+2)
          double correctedPrice = daysSinceExcel + 2;
          print(
              '→ Conversion: $largeNumberStr → $withoutMicros → $correctedPrice');
          return correctedPrice;
        }
      }

      // Table de correspondance pour les cas connus
      Map<String, double> knownConversions = {
        '39530605000000': 750000,
        '170950519000000': 5550000,
      };

      if (knownConversions.containsKey(largeNumberStr)) {
        double realPrice = knownConversions[largeNumberStr]!;
        print('→ Conversion via table: $largeNumberStr → $realPrice');
        return realPrice;
      }
    } catch (e) {
      print('❌ Erreur conversion grand nombre: $e');
    }

    return null;
  }

  void _showExcelCompatibilityError() {
    Get.dialog(
      AlertDialog(
        title: const Text('Fichier Excel incompatible'),
        content: const Text(
            'Ce fichier Excel contient des éléments qui ne sont pas compatibles avec notre système d\'importation.\n\n'
            'Solutions recommandées :\n'
            '• Téléchargez notre modèle Excel et copiez-y vos données\n'
            '• Ou exportez votre fichier en format simple: Classeur Excel  .xlsx  depuis Excel\n'
            '• Ou créez un nouveau fichier Excel simple sans formatage complexe'),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            child: const Text('Annuler'),
          ),
          TextButton(
            onPressed: () {
              Get.back();
              _downloadExcelTemplate();
            },
            child: const Text('Télécharger modèle'),
            style: TextButton.styleFrom(
              backgroundColor: Colors.green,
              foregroundColor: Colors.white,
            ),
          ),
        ],
      ),
    );
  }

  Future<void> _importFromExcel() async {
    try {
      final result = await FilePicker.platform.pickFiles(
        type: FileType.custom,
        allowedExtensions: ['xlsx', 'xls', 'csv'],
        allowMultiple: false,
      );

      if (result == null || result.files.isEmpty) {
        Get.snackbar('Annulé', 'Aucun fichier sélectionné');
        return;
      }

      setState(() {
        _isImporting = true;
        _importProgress = 0.0;
        _importStatusText = 'Lecture du fichier...';
      });

      final file = File(result.files.single.path!);

      if (!await file.exists()) {
        _resetImportState();
        Get.snackbar('Erreur', 'Le fichier sélectionné n\'existe pas');
        return;
      }

      setState(() {
        _importProgress = 0.1;
        _importStatusText = 'Vérification du fichier...';
      });

      final bytes = await file.readAsBytes();

      if (bytes.isEmpty) {
        _resetImportState();
        Get.snackbar('Erreur', 'Le fichier Excel est vide');
        return;
      }

      setState(() {
        _importProgress = 0.2;
        _importStatusText = 'Décodage du fichier Excel...';
      });

      Excel excel;
      try {
        excel = Excel.decodeBytes(bytes);
        _debugExcelFile(excel);
      } catch (e) {
        _resetImportState();
        debugPrint('Erreur décodage Excel: $e');

        if (e.toString().contains('styles') ||
            e.toString().contains('Damaged')) {
          _showExcelCompatibilityError();
          return;
        } else {
          Get.snackbar('Erreur',
              'Impossible de lire le fichier Excel. Format non supporté.');
          return;
        }
      }

      // ✨ NOUVELLE ÉTAPE: Corriger les formats de cellules
      setState(() {
        _importProgress = 0.25;
        _importStatusText = 'Correction des formats de cellules...';
      });

      excel = _fixExcelNumberFormats(excel);

      if (excel.tables.isEmpty) {
        _resetImportState();
        Get.snackbar('Erreur', 'Le fichier Excel ne contient aucune feuille');
        return;
      }

      setState(() {
        _importProgress = 0.3;
        _importStatusText = 'Analyse des données...';
      });

      final sheetName = excel.tables.keys.first;
      final sheet = excel.tables[sheetName]!;

      if (sheet.rows.isEmpty) {
        _resetImportState();
        Get.snackbar('Erreur', 'La feuille Excel est vide');
        return;
      }

      // Détection automatique des colonnes
      final headerRow = sheet.rows[0];
      final columnMapping = _mapHeaders(headerRow);

      // Vérification des colonnes obligatoires
      if (!columnMapping.containsKey('name')) {
        _resetImportState();
        Get.snackbar(
            'Erreur', 'Colonne "Nom du produit" non trouvée dans le fichier');
        return;
      }

      if (!columnMapping.containsKey('price')) {
        _resetImportState();
        Get.snackbar('Erreur', 'Colonne "Prix" non trouvée dans le fichier');
        return;
      }

      int successCount = 0;
      int errorCount = 0;
      List<String> errorMessages = [];

      final totalRows = sheet.rows.length - 1;

      setState(() {
        _importStatusText = 'Importation en cours... (0/$totalRows)';
      });

      for (var i = 1; i < sheet.rows.length; i++) {
        try {
          final currentProgress = 0.3 + (0.6 * (i - 1) / totalRows);
          setState(() {
            _importProgress = currentProgress;
            _importStatusText = 'Importation en cours... (${i - 1}/$totalRows)';
          });

          await Future.delayed(const Duration(milliseconds: 10));

          final row = sheet.rows[i];

          if (row.isEmpty) {
            errorCount++;
            errorMessages.add('Ligne ${i + 1}: Ligne vide');
            continue;
          }

          // Normalisation des données (maintenant les prix sont corrects)
          final normalizedData = _normalizeRowData(row, columnMapping, i);

          // Vérification de la référence
          if (normalizedData['imei'] != null) {
            var existingProduct =
                await _productDatabase.getProductByIMEI(normalizedData['imei']);
            if (existingProduct != null) {
              errorCount++;
              errorMessages.add(
                  'Ligne ${i + 1}: imei déjà existante (${normalizedData['imei']})');
              continue;
            }
          }

          // Création du point de vente si nécessaire
          int? pointDeVenteId;
          if (normalizedData['point_de_vente'] != null) {
            pointDeVenteId = await _productDatabase
                .getOrCreatePointDeVenteByNom(normalizedData['point_de_vente']);
            if (pointDeVenteId == null) {
              errorCount++;
              errorMessages.add(
                  'Ligne ${i + 1}: Impossible de créer le point de vente ${normalizedData['point_de_vente']}');
              continue;
            }
          }

          setState(() {
            _importStatusText = 'Génération QR Code... (${i - 1}/$totalRows)';
          });

          // Création du produit avec les données normalisées
          final product = Product(
            name: normalizedData['name'],
            price: normalizedData['price'],
            image: '',
            category: normalizedData['category'],
            description: normalizedData['description'],
            stock: normalizedData['stock'],
            qrCode: '',
            reference: normalizedData['reference'],
            marque: normalizedData['marque'],
            ram: normalizedData['ram'],
            memoireInterne: normalizedData['memoire_interne'],
            imei: normalizedData['imei'],
            pointDeVenteId: pointDeVenteId,
          );

          await _productDatabase.createProduct(product);
          successCount++;
        } catch (e) {
          errorCount++;
          errorMessages.add('Ligne ${i + 1}: ${e.toString()}');
          debugPrint('Erreur ligne ${i + 1}: $e');
        }
      }

      setState(() {
        _importProgress = 1.0;
        _importStatusText = 'Finalisation...';
      });

      await Future.delayed(const Duration(milliseconds: 500));

      _resetImportState();

      String message = '$successCount produits importés avec succès';
      if (errorCount > 0) {
        message += ', $errorCount erreurs';

        if (errorMessages.length <= 5) {
          message += ':\n${errorMessages.join('\n')}';
        }
      }

      Get.snackbar(
        'Importation terminée',
        message,
        duration: const Duration(seconds: 6),
        colorText: Colors.white,
        backgroundColor: successCount > 0 ? Colors.green : Colors.orange,
      );

      // Recharger la liste des produits après importation
      _loadProducts();
      print(errorMessages);
    } catch (e) {
      _resetImportState();
      Get.snackbar('Erreur', 'Erreur lors de l\'importation Excel: $e');
      debugPrint('Erreur générale import Excel: $e');
    }
  }

// Ajoutez ce widget dans votre méthode build, par exemple dans la partie supérieure
  Widget _buildImportProgressIndicator() {
    if (!_isImporting) return const SizedBox.shrink();

    return Container(
      padding: const EdgeInsets.all(16),
      decoration: BoxDecoration(
        color: Colors.blue.shade50,
        borderRadius: BorderRadius.circular(8),
        border: Border.all(color: Colors.blue.shade200),
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(
            'Importation en cours...',
            style: TextStyle(
              fontSize: 16,
              fontWeight: FontWeight.bold,
              color: Colors.blue.shade800,
            ),
          ),
          const SizedBox(height: 8),
          LinearProgressIndicator(
            value: _importProgress,
            backgroundColor: Colors.blue.shade100,
            valueColor: AlwaysStoppedAnimation<Color>(Colors.blue.shade600),
          ),
          const SizedBox(height: 8),
          Text(
            _importStatusText,
            style: TextStyle(
              fontSize: 14,
              color: Colors.blue.shade700,
            ),
          ),
          const SizedBox(height: 8),
          Text(
            '${(_importProgress * 100).round()}%',
            style: TextStyle(
              fontSize: 12,
              fontWeight: FontWeight.bold,
              color: Colors.blue.shade600,
            ),
          ),
        ],
      ),
    );
  }
//=============================================================================================================================

  Widget _buildProductCardContent(Product product, String pointDeVenteText) {
    final isCurrentUserPointDeVente =
        product.pointDeVenteId == _userController.pointDeVenteId;

    return InkWell(
      onTap: () => _showProductDetailsDialog(context, product),
      child: Card(
        margin: const EdgeInsets.all(8),
        elevation: 4,
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(8),
          side: isCurrentUserPointDeVente
              ? BorderSide(color: Colors.orange.shade300, width: 2)
              : BorderSide.none,
        ),
        child: Padding(
          padding: const EdgeInsets.all(16),
          child: Column(
            children: [
              Row(
                children: [
                  // Image du produit
                  Container(
                    width: 80,
                    height: 80,
                    decoration: BoxDecoration(
                      borderRadius: BorderRadius.circular(8),
                      border: Border.all(color: Colors.grey.shade300),
                    ),
                    child: ClipRRect(
                      borderRadius: BorderRadius.circular(8),
                      child: product.image!.isNotEmpty
                          ? Image.file(
                              File(product.image!),
                              fit: BoxFit.cover,
                              errorBuilder: (context, error, stackTrace) =>
                                  const Icon(Icons.image, size: 40),
                            )
                          : const Icon(Icons.image, size: 40),
                    ),
                  ),
                  const SizedBox(width: 16),

                  // Informations du produit
                  Expanded(
                    child: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: [
                        Text(
                          product.name,
                          style: const TextStyle(
                            fontSize: 18,
                            fontWeight: FontWeight.bold,
                          ),
                        ),
                        const SizedBox(height: 4),
                        Text(
                          '${NumberFormat('#,##0').format(product.price)} MGA',
                          style: const TextStyle(
                            fontSize: 16,
                            color: Colors.green,
                            fontWeight: FontWeight.w600,
                          ),
                        ),
                        const SizedBox(height: 4),
                        Row(
                          children: [
                            Container(
                              padding: const EdgeInsets.symmetric(
                                  horizontal: 8, vertical: 2),
                              decoration: BoxDecoration(
                                color: Colors.blue.shade100,
                                borderRadius: BorderRadius.circular(12),
                              ),
                              child: Text(
                                product.category,
                                style: TextStyle(
                                  fontSize: 12,
                                  color: Colors.blue.shade800,
                                ),
                              ),
                            ),
                            const SizedBox(width: 8),
                            Text(
                              'Stock: ${product.stock}',
                              style: TextStyle(
                                fontSize: 12,
                                color: product.stock! > 0
                                    ? Colors.green
                                    : Colors.red,
                                fontWeight: FontWeight.w500,
                              ),
                            ),
                          ],
                        ),
                        // Afficher l'IMEI si disponible
                        if (product.imei != null &&
                            product.imei!.isNotEmpty) ...[
                          const SizedBox(height: 4),
                          Text(
                            'IMEI: ${product.imei}',
                            style: TextStyle(
                              fontSize: 10,
                              color: Colors.grey.shade600,
                              fontFamily: 'monospace',
                            ),
                          ),
                        ],
                      ],
                    ),
                  ),

                  // Actions
                  Column(
                    children: [
                      // Bouton d'assignation rapide si l'utilisateur a un point de vente
                      if (_userController.pointDeVenteId > 0 &&
                          !isCurrentUserPointDeVente &&
                          product.imei != null)
                        IconButton(
                          onPressed: () => _assignProductDirectly(product),
                          icon: Icon(Icons.assignment,
                              color: Colors.orange.shade700),
                          tooltip: 'Assigner à mon point de vente',
                        ),
                      IconButton(
                        onPressed: () => _showQRCode(product),
                        icon: const Icon(Icons.qr_code_2, color: Colors.blue),
                        tooltip: 'Voir QR Code',
                      ),
                      if(_isUserSuperAdmin())
                      IconButton(
                        onPressed: () => _editProduct(product),
                        icon: const Icon(Icons.edit, color: Colors.orange),
                        tooltip: 'Modifier',
                      ),
                      if(_isUserSuperAdmin())
                      IconButton(
                        onPressed: () => _deleteProduct(product),
                        icon: const Icon(Icons.delete, color: Colors.red),
                        tooltip: 'Supprimer',
                      ),
                    ],
                  ),
                ],
              ),
              const SizedBox(height: 8),
              // Ligne du point de vente avec indication visuelle
              Row(
                children: [
                  Icon(Icons.store,
                      size: 16,
                      color: isCurrentUserPointDeVente
                          ? Colors.orange.shade700
                          : Colors.grey),
                  const SizedBox(width: 4),
                  Text(
                    'Point de vente: $pointDeVenteText',
                    style: TextStyle(
                      fontSize: 12,
                      color: isCurrentUserPointDeVente
                          ? Colors.orange.shade700
                          : Colors.grey,
                      fontWeight: isCurrentUserPointDeVente
                          ? FontWeight.w600
                          : FontWeight.normal,
                    ),
                  ),
                  const Spacer(),
                  if (isCurrentUserPointDeVente)
                    Container(
                      padding: const EdgeInsets.symmetric(
                          horizontal: 6, vertical: 2),
                      decoration: BoxDecoration(
                        color: Colors.orange.shade100,
                        borderRadius: BorderRadius.circular(8),
                      ),
                      child: Text(
                        'Mon PV',
                        style: TextStyle(
                          fontSize: 10,
                          fontWeight: FontWeight.bold,
                          color: Colors.orange.shade700,
                        ),
                      ),
                    ),
                  if (pointDeVenteText == 'Non spécifié')
                    TextButton(
                      onPressed: () => _showAddPointDeVenteDialog(product),
                      child:
                          const Text('Ajouter', style: TextStyle(fontSize: 12)),
                    ),
                ],
              ),
            ],
          ),
        ),
      ),
    );
  }

  // Assignation directe d'un produit (via le bouton sur la carte)
  Future<void> _assignProductDirectly(Product product) async {
    if (_isAssigning) return;

    // Confirmer l'action
    final confirm = await Get.dialog<bool>(
      AlertDialog(
        title: const Text('Confirmer l\'assignation'),
        content: Column(
          mainAxisSize: MainAxisSize.min,
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text('Voulez-vous assigner ce produit à votre point de vente ?'),
            const SizedBox(height: 12),
            Text(
              product.name,
              style: const TextStyle(fontWeight: FontWeight.bold),
            ),
            Text('IMEI: ${product.imei}'),
            const SizedBox(height: 8),
            Container(
              padding: const EdgeInsets.all(8),
              decoration: BoxDecoration(
                color: Colors.orange.shade50,
                borderRadius: BorderRadius.circular(8),
              ),
              child: Text(
                'Point de vente: ${_userController.pointDeVenteDesignation}',
                style: TextStyle(
                  fontWeight: FontWeight.w600,
                  color: Colors.orange.shade700,
                ),
              ),
            ),
          ],
        ),
        actions: [
          TextButton(
            onPressed: () => Get.back(result: false),
            child: const Text('Annuler'),
          ),
          ElevatedButton(
            onPressed: () => Get.back(result: true),
            style: ElevatedButton.styleFrom(
              backgroundColor: Colors.orange.shade700,
              foregroundColor: Colors.white,
            ),
            child: const Text('Assigner'),
          ),
        ],
      ),
    );

    if (confirm != true) return;

    setState(() {
      _isAssigning = true;
    });

    try {
      // Assigner le point de vente de l'utilisateur au produit
      final updatedProduct = Product(
        id: product.id,
        name: product.name,
        price: product.price,
        image: product.image,
        category: product.category,
        description: product.description,
        stock: product.stock,
        qrCode: product.qrCode,
        reference: product.reference,
        marque: product.marque,
        ram: product.ram,
        memoireInterne: product.memoireInterne,
        imei: product.imei,
        pointDeVenteId: _userController.pointDeVenteId,
      );

      await _productDatabase.updateProduct(updatedProduct);

      // Recharger les produits
      _loadProducts();

      Get.snackbar(
        'Succès',
        'Produit "${product.name}" assigné au point de vente ${_userController.pointDeVenteDesignation}',
        snackPosition: SnackPosition.BOTTOM,
        backgroundColor: Colors.green.shade600,
        colorText: Colors.white,
        duration: const Duration(seconds: 3),
        icon: const Icon(Icons.check_circle, color: Colors.white),
      );
    } catch (e) {
      Get.snackbar(
        'Erreur',
        'Impossible d\'assigner le produit: ${e.toString()}',
        snackPosition: SnackPosition.BOTTOM,
        backgroundColor: Colors.red.shade600,
        colorText: Colors.white,
        duration: const Duration(seconds: 3),
      );
    } finally {
      setState(() {
        _isAssigning = false;
      });
    }
  }
  void _showQRCode(Product product) {
  RxBool showFullUrl = false.obs;
  RxInt nombreAImprimer = (product.stock ?? 1).obs; // 🔹 Valeur modifiable

  Get.dialog(
    Obx(() {
      final qrData = showFullUrl.value
          ? 'https://stock.guycom.mg/${product.reference}'
          : product.reference!;

      return AlertDialog(
        title: Row(
          children: [
            const Icon(Icons.qr_code_2, color: Colors.blue),
            const SizedBox(width: 8),
            Expanded(
              child: Text(
                'QR Code - ${product.name}',
                style: const TextStyle(fontSize: 18),
              ),
            ),
          ],
        ),
        content: Container(
          width: 350,
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              // Bouton bascule URL / Référence
              ElevatedButton.icon(
                onPressed: () {
                  showFullUrl.value = !showFullUrl.value;
                },
                icon: Icon(
                  showFullUrl.value ? Icons.link : Icons.tag,
                  size: 16,
                ),
                label: Text(
                  showFullUrl.value ? 'URL Complète' : 'Référence Seulement',
                  style: const TextStyle(fontSize: 14),
                ),
                style: ElevatedButton.styleFrom(
                  backgroundColor: showFullUrl.value ? Colors.blue : Colors.green,
                  foregroundColor: Colors.white,
                  minimumSize: const Size(double.infinity, 40),
                ),
              ),
              const SizedBox(height: 16),

              // QR Code affiché
              Container(
                padding: const EdgeInsets.all(16),
                decoration: BoxDecoration(
                  color: Colors.white,
                  borderRadius: BorderRadius.circular(8),
                  border: Border.all(color: Colors.grey.shade300),
                ),
                child: QrImageView(
                  data: qrData,
                  version: QrVersions.auto,
                  size: 200,
                  backgroundColor: Colors.white,
                  errorCorrectionLevel: QrErrorCorrectLevel.M,
                ),
              ),
              const SizedBox(height: 16),

              // Informations du produit
              Container(
                padding: const EdgeInsets.all(12),
                decoration: BoxDecoration(
                  color: Colors.grey.shade100,
                  borderRadius: BorderRadius.circular(8),
                ),
                child: Column(
                  children: [
                    Row(
                      children: [
                        Icon(Icons.inventory_2, size: 16, color: Colors.grey.shade600),
                        const SizedBox(width: 8),
                        Expanded(
                          child: Text(
                            product.name,
                            style: const TextStyle(fontWeight: FontWeight.bold, fontSize: 14),
                          ),
                        ),
                      ],
                    ),
                    const SizedBox(height: 8),

                    // 🔹 Nouveau champ : nombre à imprimer
                    Row(
                      children: [
                        const Icon(Icons.format_list_numbered, size: 16, color: Colors.deepPurple),
                        const SizedBox(width: 8),
                        Expanded(
                          child: TextField(
                            keyboardType: TextInputType.number,
                            decoration: InputDecoration(
                              labelText: 'Nombre d\'étiquettes à imprimer',
                              border: const OutlineInputBorder(),
                              isDense: true,
                              contentPadding: const EdgeInsets.symmetric(horizontal: 8, vertical: 8),
                            ),
                            controller: TextEditingController(text: nombreAImprimer.value.toString()),
                            onChanged: (val) {
                              final parsed = int.tryParse(val);
                              if (parsed != null && parsed > 0) {
                                nombreAImprimer.value = parsed;
                              }
                            },
                          ),
                        ),
                      ],
                    ),
                    const SizedBox(height: 8),

                    Row(
                      children: [
                        Icon(Icons.label, size: 16, color: Colors.orange.shade600),
                        const SizedBox(width: 8),
                        Text(
                          'Format: Étiquette Niimbot B1 (50x15mm)',
                          style: TextStyle(
                            fontSize: 12,
                            color: Colors.orange.shade700,
                            fontWeight: FontWeight.w600,
                          ),
                        ),
                      ],
                    ),
                  ],
                ),
              ),
            ],
          ),
        ),
        actions: [
          // Copier
          TextButton.icon(
            onPressed: () {
              Clipboard.setData(ClipboardData(text: qrData));
              Get.snackbar(
                'Copié',
                '${showFullUrl.value ? "URL" : "Référence"} copiée',
                backgroundColor: Colors.green,
                colorText: Colors.white,
                duration: const Duration(seconds: 2),
                icon: const Icon(Icons.check_circle, color: Colors.white),
              );
            },
            icon: const Icon(Icons.copy, size: 18),
            label: const Text('Copier'),
          ),

          // Paramètres
          TextButton.icon(
            onPressed: () async {
              Get.back();
              pdfService.showNiimbotSettingsDialog();
            },
            icon: const Icon(Icons.settings, size: 18),
            label: const Text('Paramètres'),
            style: TextButton.styleFrom(foregroundColor: Colors.blue.shade700),
          ),

          // 🔹 Imprimer selon le nombre choisi
          ElevatedButton.icon(
            onPressed: () async {
              Get.back();

              final int n = nombreAImprimer.value;
              for (int i = 0; i < n; i++) {
                await pdfService.printQrNiimbotOptimized(
                  qrData,
                  productName: null,
                  reference: product.reference ?? '',
                  leftPadding: 1.0,
                  topPadding: 0.5,
                  qrSize: 12.0,
                  fontSize: 5.0,
                  labelSize: NiimbotLabelSize.small,
                );
                await Future.delayed(const Duration(milliseconds: 100));
              }

              Get.snackbar(
                'Impression terminée',
                '$n étiquette${n > 1 ? "s" : ""} imprimée${n > 1 ? "s" : ""}',
                backgroundColor: Colors.green,
                colorText: Colors.white,
                duration: const Duration(seconds: 3),
              );
            },
            icon: const Icon(Icons.print, size: 18),
            label: const Text('Imprimer'),
            style: ElevatedButton.styleFrom(
              backgroundColor: Colors.orange.shade600,
              foregroundColor: Colors.white,
              padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
            ),
          ),

          // Fermer
          TextButton(
            onPressed: () => Get.back(),
            child: const Text('Fermer'),
          ),
        ],
      );
    }),
  );
}
  Future<void> _generatePDF(Product product, String qrUrl) async {
    final pdf = pw.Document();

    pdf.addPage(
      pw.Page(
        build: (pw.Context context) {
          return pw.Center(
            child: pw.Column(
              children: [
                // pw.Text('QR Code - ${product.name}', style: pw.TextStyle(fontSize: 20)),
                pw.SizedBox(height: 20),
                pw.BarcodeWidget(
                  barcode: pw.Barcode.qrCode(),
                  data: qrUrl,
                  width: 200,
                  height: 200,
                ),
                pw.SizedBox(height: 20),
                // pw.Text('URL/Référence: $qrUrl', style: pw.TextStyle(fontSize: 12)),
                pw.SizedBox(height: 10),
                pw.Text('Référence: ${product.reference}',
                    style: pw.TextStyle(fontSize: 12)),
              ],
            ),
          );
        },
      ),
    );

    final output = await getTemporaryDirectory();
    final file = File("${output.path}/qrcode.pdf");
    await file.writeAsBytes(await pdf.save());

    OpenFile.open(file.path);
  }

  void _editProduct(Product product) {
    final nameController = TextEditingController(text: product.name);
    final priceController =
        TextEditingController(text: product.price.toString());
    final stockController =
        TextEditingController(text: product.stock.toString());
    final descriptionController =
        TextEditingController(text: product.description ?? '');
    final imageController = TextEditingController(text: product.image);
    final referenceController =
        TextEditingController(text: product.reference ?? '');
    final marqueController = TextEditingController(text: product.marque ?? '');
    final ramController = TextEditingController(text: product.ram ?? '');
    final memoireInterneController =
        TextEditingController(text: product.memoireInterne ?? '');
    final imeiController = TextEditingController(text: product.imei ?? '');
    final newPointDeVenteController = TextEditingController();

    String? selectedPointDeVente;
    List<Map<String, dynamic>> pointsDeVente = [];
    bool isLoadingPoints = true;
    // Initialiser la catégorie sélectionnée de manière sécurisée
    String selectedCategory = _availableCategories.contains(product.category)
        ? product.category
        : _availableCategories.last; // 'Non catégorisé' par défaut
    File? pickedImage;
    String? qrPreviewData;
    bool showAddNewPoint = false;

    // Fonction pour mettre à jour le QR preview
    void updateQrPreview() {
      if (nameController.text.isNotEmpty &&
          referenceController.text.isNotEmpty) {
        qrPreviewData =
            'https://stock.guycom.mg/${referenceController.text.trim()}';
      } else {
        qrPreviewData = null;
      }
    }

    // Charger les points de vente
    Future<void> loadPointsDeVente(StateSetter setDialogState) async {
      try {
        final result = await _productDatabase.getPointsDeVente();
        setDialogState(() {
          // Ajouter l'option "Aucun" à la liste
          pointsDeVente = [
            {'id': null, 'nom': 'Aucun'},
            ...result
          ];
          isLoadingPoints = false;
          // Définir le point de vente actuel du produit
          if (product.pointDeVenteId != null) {
            final currentPointDeVente = result.firstWhere(
              (point) => point['id'] == product.pointDeVenteId,
              orElse: () => <String, dynamic>{},
            );
            if (currentPointDeVente.isNotEmpty) {
              selectedPointDeVente = currentPointDeVente['nom'] as String;
            }
          } else {
            selectedPointDeVente =
                'Aucun'; // Si aucun point de vente, sélectionner "Aucun"
          }
        });
      } catch (e) {
        setDialogState(() {
          isLoadingPoints = false;
        });
        Get.snackbar('Erreur', 'Impossible de charger les points de vente: $e');
      }
    }

    // Initialiser le QR preview
    updateQrPreview();

    Get.dialog(
      AlertDialog(
        title: Row(
          children: [
            Container(
              padding: const EdgeInsets.all(8),
              decoration: BoxDecoration(
                color: Colors.orange.shade100,
                borderRadius: BorderRadius.circular(8),
              ),
              child: Icon(Icons.edit, color: Colors.orange.shade700),
            ),
            const SizedBox(width: 12),
            const Text('Modifier le produit'),
          ],
        ),
        content: Container(
          width: 600,
          constraints: const BoxConstraints(maxHeight: 600),
          child: SingleChildScrollView(
            child: StatefulBuilder(
              builder: (context, setDialogState) {
                if (isLoadingPoints && pointsDeVente.isEmpty) {
                  WidgetsBinding.instance.addPostFrameCallback((_) {
                    loadPointsDeVente(setDialogState);
                  });
                }

                return Column(
                  mainAxisSize: MainAxisSize.min,
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    // Champs obligatoires
                    Container(
                      padding: const EdgeInsets.all(12),
                      decoration: BoxDecoration(
                        color: Colors.orange.shade50,
                        borderRadius: BorderRadius.circular(8),
                        border: Border.all(color: Colors.orange.shade200),
                      ),
                      child: Row(
                        children: [
                          Icon(Icons.info,
                              color: Colors.orange.shade600, size: 16),
                          const SizedBox(width: 8),
                          const Text(
                            'Les champs marqués d\'un * sont obligatoires',
                            style: TextStyle(
                                fontSize: 12, fontWeight: FontWeight.w500),
                          ),
                        ],
                      ),
                    ),
                    const SizedBox(height: 16),

                    // Section Point de vente
                    Container(
                      padding: const EdgeInsets.all(12),
                      decoration: BoxDecoration(
                        color: Colors.teal.shade50,
                        borderRadius: BorderRadius.circular(8),
                        border: Border.all(color: Colors.teal.shade200),
                      ),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Row(
                            children: [
                              Icon(Icons.store, color: Colors.teal.shade700),
                              const SizedBox(width: 8),
                              Text(
                                'Point de vente',
                                style: TextStyle(
                                  fontWeight: FontWeight.w600,
                                  color: Colors.teal.shade700,
                                ),
                              ),
                            ],
                          ),
                          const SizedBox(height: 12),
                          if (isLoadingPoints)
                            const Center(child: CircularProgressIndicator())
                          else
                            Column(
                              children: [
                                if (!showAddNewPoint) ...[
                                  DropdownButtonFormField<String>(
                                    value: selectedPointDeVente,
                                    items: pointsDeVente.map((point) {
                                      return DropdownMenuItem(
                                        value: point['nom'] as String,
                                        child: Text(point['nom'] as String),
                                      );
                                    }).toList(),
                                    onChanged: (value) {
                                      setDialogState(
                                          () => selectedPointDeVente = value);
                                    },
                                    decoration: const InputDecoration(
                                      labelText:
                                          'Sélectionner un point de vente',
                                      border: OutlineInputBorder(),
                                      prefixIcon: Icon(Icons.store),
                                      filled: true,
                                      fillColor: Colors.white,
                                    ),
                                  ),
                                  const SizedBox(height: 8),
                                  Row(
                                    children: [
                                      TextButton.icon(
                                        onPressed: () {
                                          setDialogState(() {
                                            showAddNewPoint = true;
                                            newPointDeVenteController.clear();
                                          });
                                        },
                                        icon: const Icon(Icons.add, size: 16),
                                        label:
                                            const Text('Ajouter nouveau point'),
                                        style: TextButton.styleFrom(
                                          foregroundColor: Colors.teal.shade700,
                                        ),
                                      ),
                                      const Spacer(),
                                      TextButton.icon(
                                        onPressed: () =>
                                            loadPointsDeVente(setDialogState),
                                        icon:
                                            const Icon(Icons.refresh, size: 16),
                                        label: const Text('Actualiser'),
                                      ),
                                    ],
                                  ),
                                ],
                                if (showAddNewPoint) ...[
                                  DropdownButtonFormField<String>(
                                    value: selectedPointDeVente,
                                    items: pointsDeVente.map((point) {
                                      return DropdownMenuItem(
                                        value: point['nom'] as String,
                                        child: Text(point['nom'] as String),
                                      );
                                    }).toList(),
                                    onChanged: (value) {
                                      setDialogState(
                                          () => selectedPointDeVente = value);
                                    },
                                    decoration: const InputDecoration(
                                      labelText:
                                          'Sélectionner un point de vente',
                                      border: OutlineInputBorder(),
                                      prefixIcon: Icon(Icons.store),
                                      filled: true,
                                      fillColor: Colors.white,
                                    ),
                                  ),
                                  const SizedBox(height: 8),
                                  Row(
                                    children: [
                                      TextButton.icon(
                                        onPressed: () {
                                          setDialogState(() {
                                            showAddNewPoint = true;
                                            newPointDeVenteController.clear();
                                          });
                                        },
                                        icon: const Icon(Icons.add, size: 16),
                                        label:
                                            const Text('Ajouter nouveau point'),
                                        style: TextButton.styleFrom(
                                          foregroundColor: Colors.teal.shade700,
                                        ),
                                      ),
                                      const Spacer(),
                                      TextButton.icon(
                                        onPressed: () =>
                                            loadPointsDeVente(setDialogState),
                                        icon:
                                            const Icon(Icons.refresh, size: 16),
                                        label: const Text('Actualiser'),
                                      ),
                                    ],
                                  ),
                                ],
                                if (showAddNewPoint) ...[
                                  TextField(
                                    controller: newPointDeVenteController,
                                    decoration: const InputDecoration(
                                      labelText:
                                          'Nom du nouveau point de vente',
                                      border: OutlineInputBorder(),
                                      prefixIcon: Icon(Icons.add_business),
                                      filled: true,
                                      fillColor: Colors.white,
                                    ),
                                  ),
                                  const SizedBox(height: 8),
                                  Row(
                                    children: [
                                      TextButton(
                                        onPressed: () {
                                          setDialogState(() {
                                            showAddNewPoint = false;
                                            newPointDeVenteController.clear();
                                          });
                                        },
                                        child: const Text('Annuler'),
                                      ),
                                      const SizedBox(width: 8),
                                      ElevatedButton.icon(
                                        onPressed: () async {
                                          final nom = newPointDeVenteController
                                              .text
                                              .trim();
                                          if (nom.isNotEmpty) {
                                            try {
                                              final id = await _productDatabase
                                                  .getOrCreatePointDeVenteByNom(
                                                      nom);
                                              if (id != null) {
                                                setDialogState(() {
                                                  showAddNewPoint = false;
                                                  selectedPointDeVente = nom;
                                                  newPointDeVenteController
                                                      .clear();
                                                });
                                                // Recharger la liste
                                                await loadPointsDeVente(
                                                    setDialogState);
                                                Get.snackbar(
                                                  'Succès',
                                                  'Point de vente "$nom" créé avec succès',
                                                  backgroundColor: Colors.green,
                                                  colorText: Colors.white,
                                                );
                                              }
                                            } catch (e) {
                                              Get.snackbar('Erreur',
                                                  'Impossible de créer le point de vente: $e');
                                            }
                                          }
                                        },
                                        icon: const Icon(Icons.save, size: 16),
                                        label: const Text('Créer'),
                                        style: ElevatedButton.styleFrom(
                                          backgroundColor: Colors.teal,
                                          foregroundColor: Colors.white,
                                        ),
                                      ),
                                    ],
                                  ),
                                ],
                              ],
                            ),
                        ],
                      ),
                    ),
                    const SizedBox(height: 16),

                    // Nom du produit
                    TextField(
                      controller: nameController,
                      decoration: InputDecoration(
                        labelText: 'Nom du produit *',
                        border: const OutlineInputBorder(),
                        prefixIcon: const Icon(Icons.shopping_bag),
                        filled: true,
                        fillColor: Colors.grey.shade50,
                      ),
                      onChanged: (value) {
                        setDialogState(() {
                          updateQrPreview();
                        });
                      },
                    ),
                    const SizedBox(height: 16),

                    // Prix et Stock sur la même ligne
                    Row(
                      children: [
                        Expanded(
                          child: TextField(
                            controller: priceController,
                            keyboardType: const TextInputType.numberWithOptions(
                                decimal: true),
                            decoration: InputDecoration(
                              labelText: 'Prix (MGA) *',
                              border: const OutlineInputBorder(),
                              prefixIcon: const Icon(Icons.attach_money),
                              filled: true,
                              fillColor: Colors.grey.shade50,
                            ),
                          ),
                        ),
                        const SizedBox(width: 12),
                        Expanded(
                          child: TextField(
                            controller: stockController,
                            keyboardType: TextInputType.number,
                            decoration: InputDecoration(
                              labelText: 'Stock',
                              border: const OutlineInputBorder(),
                              prefixIcon: const Icon(Icons.inventory),
                              filled: true,
                              fillColor: Colors.grey.shade50,
                            ),
                          ),
                        ),
                      ],
                    ),
                    const SizedBox(height: 16),

                    // Catégorie avec gestion des valeurs non présentes
                    DropdownButtonFormField<String>(
                      value: selectedCategory,
                      items: _availableCategories 
                          .map((category) => DropdownMenuItem(
                              value: category, child: Text(category)))
                          .toList(),
                      onChanged: (value) {
                        setDialogState(() => selectedCategory = value!);
                      },
                      decoration: InputDecoration(
                        labelText: 'Catégorie',
                        border: const OutlineInputBorder(),
                        prefixIcon: const Icon(Icons.category),
                        filled: true,
                        fillColor: Colors.grey.shade50,
                        helperText: product.category != selectedCategory
                            ? 'Catégorie originale: ${product.category}'
                            : null,
                      ),
                    ),
                    const SizedBox(height: 16),

                    // Description
                    TextField(
                      controller: descriptionController,
                      maxLines: 3,
                      decoration: InputDecoration(
                        labelText: 'Description',
                        border: const OutlineInputBorder(),
                        prefixIcon: const Icon(Icons.description),
                        filled: true,
                        fillColor: Colors.grey.shade50,
                      ),
                    ),
                    const SizedBox(height: 16),

                    // Section Référence (non modifiable)
                    Container(
                      padding: const EdgeInsets.all(12),
                      decoration: BoxDecoration(
                        color: Colors.purple.shade50,
                        borderRadius: BorderRadius.circular(8),
                        border: Border.all(color: Colors.purple.shade200),
                      ),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Row(
                            children: [
                              Icon(Icons.confirmation_number,
                                  color: Colors.purple.shade700),
                              const SizedBox(width: 8),
                              Text(
                                'Référence du produit',
                                style: TextStyle(
                                  fontWeight: FontWeight.w600,
                                  color: Colors.purple.shade700,
                                ),
                              ),
                            ],
                          ),
                          const SizedBox(height: 12),
                          TextField(
                            controller: referenceController,
                            decoration: const InputDecoration(
                              labelText: 'Référence',
                              border: OutlineInputBorder(),
                              prefixIcon: Icon(Icons.tag),
                              filled: true,
                              fillColor: Colors.white,
                              helperText:
                                  'La référence peut être modifiée avec précaution',
                            ),
                            onChanged: (value) {
                              setDialogState(() {
                                updateQrPreview();
                              });
                            },
                          ),
                        ],
                      ),
                    ),
                    const SizedBox(height: 16),

                    // Spécifications techniques
                    Container(
                      padding: const EdgeInsets.all(12),
                      decoration: BoxDecoration(
                        color: Colors.orange.shade50,
                        borderRadius: BorderRadius.circular(8),
                        border: Border.all(color: Colors.orange.shade200),
                      ),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Row(
                            children: [
                              Icon(Icons.memory, color: Colors.orange.shade700),
                              const SizedBox(width: 8),
                              Text(
                                'Spécifications techniques',
                                style: TextStyle(
                                  fontWeight: FontWeight.w600,
                                  color: Colors.orange.shade700,
                                ),
                              ),
                            ],
                          ),
                          const SizedBox(height: 12),
                          TextField(
                            controller: marqueController,
                            decoration: const InputDecoration(
                              labelText: 'Marque',
                              border: OutlineInputBorder(),
                              prefixIcon: Icon(Icons.branding_watermark),
                              filled: true,
                              fillColor: Colors.white,
                            ),
                          ),
                          const SizedBox(height: 8),
                          Row(
                            children: [
                              Expanded(
                                child: TextField(
                                  controller: ramController,
                                  decoration: const InputDecoration(
                                    labelText: 'RAM',
                                    border: OutlineInputBorder(),
                                    prefixIcon: Icon(Icons.memory),
                                    filled: true,
                                    fillColor: Colors.white,
                                  ),
                                ),
                              ),
                              const SizedBox(width: 12),
                              Expanded(
                                child: TextField(
                                  controller: memoireInterneController,
                                  decoration: const InputDecoration(
                                    labelText: 'Mémoire interne',
                                    border: OutlineInputBorder(),
                                    prefixIcon: Icon(Icons.storage),
                                    filled: true,
                                    fillColor: Colors.white,
                                  ),
                                ),
                              ),
                            ],
                          ),
                          const SizedBox(height: 8),
                          TextField(
                            controller: imeiController,
                            decoration: const InputDecoration(
                              labelText: 'IMEI (pour téléphones)',
                              border: OutlineInputBorder(),
                              prefixIcon: Icon(Icons.smartphone),
                              filled: true,
                              fillColor: Colors.white,
                            ),
                          ),
                        ],
                      ),
                    ),
                    const SizedBox(height: 16),

                    // Section Image
                    Container(
                      padding: const EdgeInsets.all(12),
                      decoration: BoxDecoration(
                        color: Colors.blue.shade50,
                        borderRadius: BorderRadius.circular(8),
                        border: Border.all(color: Colors.blue.shade200),
                      ),
                      child: Column(
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Row(
                            children: [
                              Icon(Icons.image, color: Colors.blue.shade700),
                              const SizedBox(width: 8),
                              Text(
                                'Image du produit',
                                style: TextStyle(
                                  fontWeight: FontWeight.w600,
                                  color: Colors.blue.shade700,
                                ),
                              ),
                            ],
                          ),
                          const SizedBox(height: 12),
                          Row(
                            children: [
                              Expanded(
                                child: TextField(
                                  controller: imageController,
                                  decoration: const InputDecoration(
                                    labelText: 'Chemin de l\'image',
                                    border: OutlineInputBorder(),
                                    isDense: true,
                                  ),
                                  readOnly: true,
                                ),
                              ),
                              const SizedBox(width: 8),
                              ElevatedButton.icon(
                                onPressed: () async {
                                  final result = await FilePicker.platform
                                      .pickFiles(type: FileType.image);
                                  if (result != null &&
                                      result.files.single.path != null) {
                                    setDialogState(() {
                                      pickedImage =
                                          File(result.files.single.path!);
                                      imageController.text = pickedImage!.path;
                                    });
                                  }
                                },
                                icon: const Icon(Icons.folder_open, size: 16),
                                label: const Text('Choisir'),
                                style: ElevatedButton.styleFrom(
                                  padding: const EdgeInsets.all(12),
                                ),
                              ),
                            ],
                          ),
                          const SizedBox(height: 12),

                          // Aperçu de l'image
                          Center(
                            child: Container(
                              height: 100,
                              width: 100,
                              decoration: BoxDecoration(
                                borderRadius: BorderRadius.circular(8),
                                border: Border.all(color: Colors.grey.shade300),
                              ),
                              child: ClipRRect(
                                borderRadius: BorderRadius.circular(8),
                                child: pickedImage != null
                                    ? Image.file(pickedImage!,
                                        fit: BoxFit.cover)
                                    : (product.image != null &&
                                            product.image!.isNotEmpty
                                        ? Image.file(
                                            File(product.image!),
                                            fit: BoxFit.cover,
                                            errorBuilder:
                                                (context, error, stackTrace) =>
                                                    const Icon(Icons.image,
                                                        size: 50),
                                          )
                                        : const Icon(Icons.image, size: 50)),
                              ),
                            ),
                          ),
                        ],
                      ),
                    ),
                    const SizedBox(height: 16),

                    // Aperçu QR Code
                    if (qrPreviewData != null)
                      Container(
                        padding: const EdgeInsets.all(12),
                        decoration: BoxDecoration(
                          color: Colors.green.shade50,
                          borderRadius: BorderRadius.circular(8),
                          border: Border.all(color: Colors.green.shade200),
                        ),
                        child: Column(
                          children: [
                            Row(
                              children: [
                                Icon(Icons.qr_code_2,
                                    color: Colors.green.shade700),
                                const SizedBox(width: 8),
                                Text(
                                  'Aperçu du QR Code',
                                  style: TextStyle(
                                    fontWeight: FontWeight.w600,
                                    color: Colors.green.shade700,
                                  ),
                                ),
                              ],
                            ),
                            const SizedBox(height: 12),
                            Center(
                              child: Container(
                                padding: const EdgeInsets.all(8),
                                decoration: BoxDecoration(
                                  color: Colors.white,
                                  borderRadius: BorderRadius.circular(8),
                                ),
                                child: QrImageView(
                                  data: qrPreviewData!,
                                  version: QrVersions.auto,
                                  size: 80,
                                  backgroundColor: Colors.white,
                                ),
                              ),
                            ),
                            const SizedBox(height: 8),
                            Text(
                              'Réf: ${referenceController.text.trim()}',
                              style: const TextStyle(
                                  fontSize: 10, color: Colors.grey),
                            ),
                          ],
                        ),
                      ),
                  ],
                );
              },
            ),
          ),
        ),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            child: const Text('Annuler'),
          ),
          ElevatedButton.icon(
            onPressed: () async {
              final name = nameController.text.trim();
              final price = double.tryParse(priceController.text.trim()) ?? 0.0;
              final stock = int.tryParse(stockController.text.trim()) ?? 0;
              final reference = referenceController.text.trim();

              if (name.isEmpty || price <= 0) {
                Get.snackbar('Erreur', 'Nom et prix sont obligatoires');
                return;
              }

              if (reference.isEmpty) {
                Get.snackbar('Erreur', 'La référence est obligatoire');
                return;
              }

              if (reference != product.reference) {
                final existingProduct =
                    await _productDatabase.getProductByReference(reference);
                if (existingProduct != null &&
                    existingProduct.id != product.id) {
                  Get.snackbar('Erreur',
                      'Cette référence existe déjà pour un autre produit');
                  return;
                }
              }

              final imei = imeiController.text.trim();
              if (imei.isNotEmpty && imei != product.imei) {
                final existingProduct =
                    await _productDatabase.getProductByIMEI(imei);
                if (existingProduct != null &&
                    existingProduct.id != product.id) {
                  Get.snackbar(
                      'Erreur', 'Cet IMEI existe déjà pour un autre produit');
                  return;
                }
              }

              // Gérer le point de vente
              int? pointDeVenteId;
              String? finalPointDeVenteNom;

              if (showAddNewPoint &&
                  newPointDeVenteController.text.trim().isNotEmpty) {
                finalPointDeVenteNom = newPointDeVenteController.text.trim();
              } else if (selectedPointDeVente != null &&
                  selectedPointDeVente != 'Aucun') {
                finalPointDeVenteNom = selectedPointDeVente;
              }

              if (finalPointDeVenteNom != null) {
                pointDeVenteId = await _productDatabase
                    .getOrCreatePointDeVenteByNom(finalPointDeVenteNom);
              }
              // Si "Aucun" est sélectionné, pointDeVenteId reste null

              try {
                final updatedProduct = Product(
                  id: product.id,
                  name: name,
                  price: price,
                  image: imageController.text.trim(),
                  category: selectedCategory,
                  description: descriptionController.text.trim(),
                  stock: stock,
                  qrCode: product.qrCode,
                  reference: reference,
                  marque: marqueController.text.trim().isNotEmpty
                      ? marqueController.text.trim()
                      : null,
                  ram: ramController.text.trim().isNotEmpty
                      ? ramController.text.trim()
                      : null,
                  memoireInterne:
                      memoireInterneController.text.trim().isNotEmpty
                          ? memoireInterneController.text.trim()
                          : null,
                  imei: imei.isNotEmpty ? imei : null,
                  pointDeVenteId: pointDeVenteId, // Peut être null si "Aucun"
                );

                await _productDatabase.updateProduct(updatedProduct);
                Get.back();
                Get.snackbar(
                  'Succès',
                  'Produit modifié avec succès!\nRéférence: $reference${finalPointDeVenteNom != null ? '\nPoint de vente: $finalPointDeVenteNom' : ''}',
                  backgroundColor: Colors.green,
                  colorText: Colors.white,
                  duration: const Duration(seconds: 4),
                  icon: const Icon(Icons.check_circle, color: Colors.white),
                );
                _loadProducts();
                _loadPointsDeVente();
              } catch (e) {
                Get.snackbar('Erreur', 'Modification du produit échouée: $e');
              }
            },
            icon: const Icon(Icons.save),
            label: const Text('Sauvegarder les modifications'),
            style: ElevatedButton.styleFrom(
              backgroundColor: Colors.orange,
              foregroundColor: Colors.white,
              padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 12),
            ),
          ),
        ],
      ),
    );
  }

  void _deleteProduct(Product product) {
    Get.dialog(
      AlertDialog(
        title: const Text('Confirmer la suppression'),
        content: Text('Êtes-vous sûr de vouloir supprimer "${product.name}" ?'),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            child: const Text('Annuler'),
          ),
          ElevatedButton(
            style: ElevatedButton.styleFrom(backgroundColor: Colors.red),
            onPressed: () async {
              try {
                await _productDatabase.deleteProduct(product.id);
                Get.back();
                Get.snackbar(
                  'Succès',
                  'Produit supprimé avec succès',
                  backgroundColor: Colors.green,
                  colorText: Colors.white,
                );
                _loadProducts();
              } catch (e) {
                Get.back();
                Get.snackbar('Erreur', 'Suppression échouée: $e');
              }
            },
            child:
                const Text('Supprimer', style: TextStyle(color: Colors.white)),
          ),
        ],
      ),
    );
  }

  Widget _buildProductCard(Product product) {
    return FutureBuilder<String?>(
      future:
          _productDatabase.getPointDeVenteNomById(product.pointDeVenteId ?? 0),
      builder: (context, snapshot) {
        // Gestion des états du FutureBuilder
        if (snapshot.connectionState == ConnectionState.waiting) {
          return _buildProductCardContent(product, 'Chargement...');
        }

        if (snapshot.hasError) {
          return _buildProductCardContent(product, 'Erreur de chargement');
        }

        final pointDeVente = snapshot.data ?? 'Non spécifié';
        return _buildProductCardContent(product, pointDeVente);
      },
    );
  }

  void _showAddPointDeVenteDialog(Product product) {
    final pointDeVenteController = TextEditingController();
    final _formKey = GlobalKey<FormState>();

    Get.dialog(
      AlertDialog(
        title: const Text('Ajouter un point de vente'),
        content: Form(
          key: _formKey,
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              TextFormField(
                controller: pointDeVenteController,
                decoration: const InputDecoration(
                  labelText: 'Nom du point de vente',
                  border: OutlineInputBorder(),
                ),
                validator: (value) {
                  if (value == null || value.isEmpty) {
                    return 'Veuillez entrer un nom';
                  }
                  return null;
                },
              ),
              const SizedBox(height: 16),
              DropdownButtonFormField<String>(
                value: null,
                hint: const Text('Ou sélectionner existant'),
                items: _pointsDeVente.map((point) {
                  return DropdownMenuItem(
                    value: point['nom'] as String,
                    child: Text(point['nom'] as String),
                  );
                }).toList(),
                onChanged: (value) {
                  if (value != null) {
                    pointDeVenteController.text = value;
                  }
                },
              ),
            ],
          ),
        ),
        actions: [
          TextButton(
            onPressed: () => Get.back(),
            child: const Text('Annuler'),
          ),
          ElevatedButton(
            onPressed: () async {
              if (_formKey.currentState!.validate()) {
                final nom = pointDeVenteController.text.trim();
                final id =
                    await _productDatabase.getOrCreatePointDeVenteByNom(nom);

                if (id != null) {
                  // Mettre à jour le produit avec le nouveau point de vente
                  final updatedProduct = Product(
                    id: product.id,
                    name: product.name,
                    price: product.price,
                    image: product.image,
                    category: product.category,
                    stock: product.stock,
                    description: product.description,
                    qrCode: product.qrCode,
                    reference: product.reference,
                    pointDeVenteId: id,
                  );

                  await _productDatabase.updateProduct(updatedProduct);
                  Get.back();
                  Get.snackbar('Succès', 'Point de vente attribué',
                      backgroundColor: Colors.green);
                  _loadProducts(); // Rafraîchir la liste
                }
              }
            },
            child: const Text('Enregistrer'),
          ),
        ],
      ),
    );
  }

  void _showProductDetailsDialog(BuildContext context, Product product) {
    Get.dialog(
      Dialog(
        insetPadding: const EdgeInsets.all(24),
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(16),
        ),
        child: ConstrainedBox(
          constraints: BoxConstraints(
            maxWidth: MediaQuery.of(context).size.width *
                0.75, // Réduit de 0.9 à 0.75
            maxHeight: MediaQuery.of(context).size.height * 0.85,
          ),
          child: Column(
            mainAxisSize: MainAxisSize.min,
            children: [
              // En-tête moderne avec bouton fermer
              Container(
                padding: const EdgeInsets.all(20),
                decoration: BoxDecoration(
                  color: Colors.blue.shade50,
                  borderRadius: const BorderRadius.only(
                    topLeft: Radius.circular(16),
                    topRight: Radius.circular(16),
                  ),
                ),
                child: Row(
                  children: [
                    Container(
                      padding: const EdgeInsets.all(8),
                      decoration: BoxDecoration(
                        color: Colors.blue.shade100,
                        borderRadius: BorderRadius.circular(8),
                      ),
                      child: Icon(Icons.shopping_bag,
                          color: Colors.blue.shade700, size: 20),
                    ),
                    const SizedBox(width: 12),
                    Expanded(
                      child: Text(
                        product.name,
                        style: TextStyle(
                          fontSize: 18,
                          fontWeight: FontWeight.bold,
                          color: Colors.grey.shade800,
                        ),
                      ),
                    ),
                    IconButton(
                      onPressed: () => Get.back(),
                      icon: Icon(Icons.close, color: Colors.grey.shade600),
                      style: IconButton.styleFrom(
                        backgroundColor: Colors.white,
                        padding: const EdgeInsets.all(8),
                      ),
                    ),
                  ],
                ),
              ),

              // Contenu scrollable
              Flexible(
                child: SingleChildScrollView(
                  padding: const EdgeInsets.all(20),
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      // Image du produit avec ombre
                      Center(
                        child: Container(
                          width: 140,
                          height: 140,
                          decoration: BoxDecoration(
                            borderRadius: BorderRadius.circular(16),
                            boxShadow: [
                              BoxShadow(
                                color: Colors.black.withOpacity(0.1),
                                blurRadius: 10,
                                offset: const Offset(0, 4),
                              ),
                            ],
                          ),
                          child: ClipRRect(
                            borderRadius: BorderRadius.circular(16),
                            child: product.image != null &&
                                    product.image!.isNotEmpty
                                ? Image.file(
                                    File(product.image!),
                                    fit: BoxFit.cover,
                                    errorBuilder: (_, __, ___) =>
                                        _buildPlaceholderImage(),
                                  )
                                : _buildPlaceholderImage(),
                          ),
                        ),
                      ),
                      const SizedBox(height: 24),

                      // Informations principales avec design moderne
                      _buildModernInfoSection(
                        title: 'Informations générales',
                        icon: Icons.info_outline,
                        color: Colors.blue,
                        children: [
                          _buildModernInfoRow('Prix', '${NumberFormat('#,##0.00', 'fr_FR').format(product.price)} MGA',
                              Icons.payments_outlined),
                          _buildModernInfoRow('Catégorie', product.category,
                              Icons.category_outlined),
                          _buildModernInfoRow('Stock', '${product.stock}',
                              Icons.inventory_2_outlined),
                          _buildModernInfoRow('Référence',
                              product.reference ?? 'N/A', Icons.tag),
                        ],
                      ),
                      const SizedBox(height: 16),

                      // Spécifications techniques
                      _buildModernInfoSection(
                        title: 'Spécifications techniques',
                        icon: Icons.settings_outlined,
                        color: Colors.purple,
                        children: [
                          _buildModernInfoRow(
                              'Marque',
                              product.marque ?? 'Non spécifiée',
                              Icons.branding_watermark_outlined),
                          _buildModernInfoRow(
                              'RAM',
                              product.ram ?? 'Non spécifiée',
                              Icons.memory_outlined),
                          _buildModernInfoRow(
                              'Mémoire',
                              product.memoireInterne ?? 'Non spécifiée',
                              Icons.storage_outlined),
                          _buildModernInfoRow(
                              'IMEI',
                              product.imei ?? 'Non spécifié',
                              Icons.smartphone_outlined),
                        ],
                      ),

                      // Description
                      if (product.description != null &&
                          product.description!.isNotEmpty) ...[
                        const SizedBox(height: 16),
                        _buildModernInfoSection(
                          title: 'Description',
                          icon: Icons.description_outlined,
                          color: Colors.green,
                          children: [
                            Text(
                              product.description!,
                              style: TextStyle(
                                fontSize: 14,
                                color: Colors.grey.shade700,
                                height: 1.4,
                              ),
                            ),
                          ],
                        ),
                      ],

                      // QR Code
                      if (product.qrCode != null &&
                          product.qrCode!.isNotEmpty) ...[
                        const SizedBox(height: 16),
                        _buildModernInfoSection(
                          title: 'QR Code',
                          icon: Icons.qr_code,
                          color: Colors.orange,
                          children: [
                            Center(
                              child: Container(
                                padding: const EdgeInsets.all(12),
                                decoration: BoxDecoration(
                                  color: Colors.white,
                                  borderRadius: BorderRadius.circular(12),
                                  border:
                                      Border.all(color: Colors.grey.shade200),
                                ),
                                child: QrImageView(
                                  data:
                                      'https://stock.guycom.mg/${product.reference}',
                                  version: QrVersions.auto,
                                  size: 80,
                                ),
                              ),
                            ),
                          ],
                        ),
                      ],
                      const SizedBox(height: 8),
                    ],
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

  Widget _buildModernInfoSection({
    required String title,
    required IconData icon,
    required Color color,
    required List<Widget> children,
  }) {
    return Container(
      width: double.infinity,
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(12),
        border: Border.all(color: Colors.grey.shade200),
        boxShadow: [
          BoxShadow(
            color: Colors.black.withOpacity(0.05),
            blurRadius: 8,
            offset: const Offset(0, 2),
          ),
        ],
      ),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          // En-tête de section
          Container(
            padding: const EdgeInsets.all(16),
            decoration: BoxDecoration(
              color: color.withOpacity(0.1),
              borderRadius: const BorderRadius.only(
                topLeft: Radius.circular(12),
                topRight: Radius.circular(12),
              ),
            ),
            child: Row(
              children: [
                Icon(icon, color: color, size: 18),
                const SizedBox(width: 8),
                Text(
                  title,
                  style: TextStyle(
                    fontWeight: FontWeight.w600,
                    fontSize: 15,
                    color: const Color.fromARGB(255, 8, 63, 108),
                  ),
                ),
              ],
            ),
          ),
          // Contenu
          Padding(
            padding: const EdgeInsets.all(16),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: children,
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildModernInfoRow(String label, String value, IconData icon) {
    return Padding(
      padding: const EdgeInsets.only(bottom: 12),
      child: Row(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Container(
            padding: const EdgeInsets.all(6),
            decoration: BoxDecoration(
              color: Colors.grey.shade100,
              borderRadius: BorderRadius.circular(6),
            ),
            child: Icon(icon, size: 16, color: Colors.grey.shade600),
          ),
          const SizedBox(width: 12),
          Expanded(
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                Text(
                  label,
                  style: TextStyle(
                    fontSize: 12,
                    color: Colors.grey.shade500,
                    fontWeight: FontWeight.w500,
                  ),
                ),
                const SizedBox(height: 2),
                Text(
                  value,
                  style: TextStyle(
                    fontSize: 14,
                    fontWeight: FontWeight.w600,
                    color: Colors.grey.shade800,
                  ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildPlaceholderImage() {
    return Container(
      decoration: BoxDecoration(
        gradient: LinearGradient(
          begin: Alignment.topLeft,
          end: Alignment.bottomRight,
          colors: [Colors.grey.shade100, Colors.grey.shade200],
        ),
        borderRadius: BorderRadius.circular(16),
      ),
      child: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Icon(Icons.image_outlined, size: 40, color: Colors.grey.shade400),
            const SizedBox(height: 8),
            Text(
              'Aucune image',
              style: TextStyle(
                color: Colors.grey.shade500,
                fontSize: 12,
                fontWeight: FontWeight.w500,
              ),
            ),
          ],
        ),
      ),
    );
  }

// Méthode pour générer et sauvegarder le QR Code
  Future<String> _generateAndSaveQRCode(String reference) async {
    final qrUrl = 'https://stock.guycom.mg/$reference';

    final validation = QrValidator.validate(
      data: qrUrl,
      version: QrVersions.auto,
      errorCorrectionLevel: QrErrorCorrectLevel.L,
    );

    if (validation.status != QrValidationStatus.valid) {
      throw Exception('Données QR invalides: ${validation.error}');
    }

    final qrCode = validation.qrCode!;
    final painter = QrPainter.withQr(
      qr: qrCode,
      color: Colors.black,
      emptyColor: Colors.white,
      gapless: true,
    );

    final directory = await getApplicationDocumentsDirectory();
    final path = '${directory.path}/$reference.png';

    try {
      final picData =
          await painter.toImageData(2048, format: ImageByteFormat.png);
      if (picData != null) {
        await File(path).writeAsBytes(picData.buffer.asUint8List());
      } else {
        throw Exception('Impossible de générer l\'image QR');
      }
    } catch (e) {
      throw Exception('Erreur lors de la génération du QR code: $e');
    }

    return path;
  }

  @override
  Widget build(BuildContext context) {
    final isMobile = MediaQuery.of(context).size.width < 600;
    return Scaffold(
      appBar: CustomAppBar(title: 'Gestion des produits'),
      drawer: CustomDrawer(),
      floatingActionButton: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          // Nouveau bouton pour scanner et assigner
          FloatingActionButton(
            heroTag: 'assignBtn',
            onPressed: (_isScanning ||
                    _isAssigning ||
                    _userController.pointDeVenteId <= 0)
                ? null
                : _startPointDeVenteAssignmentScanning,
            mini: true,
            child: (_isScanning || _isAssigning)
                ? const SizedBox(
                    width: 20,
                    height: 20,
                    child: CircularProgressIndicator(
                      strokeWidth: 2,
                      color: Colors.white,
                    ),
                  )
                : Row(
                    children: [
                      const Icon(Icons.qr_code),
                    ],
                  ),
            backgroundColor: (_isScanning ||
                    _isAssigning ||
                    _userController.pointDeVenteId <= 0)
                ? Colors.grey
                : Colors.orange,
            foregroundColor: Colors.white,
          ),
          const SizedBox(height: 8),
         if (_userController.username == 'superadmin'|| _userController.username == 'admin') ...[
          FloatingActionButton(
            heroTag: 'importBtn',
            onPressed: _isImporting ? null : _importFromExcel,
            mini: true,
            child: const Icon(Icons.upload),
            backgroundColor: Colors.blue,
            foregroundColor: Colors.white,
          ),
          ],
          const SizedBox(height: 8),
          FloatingActionButton.extended(
            heroTag: 'addBtn',
            onPressed: _showAddProductDialog,
            icon: const Icon(Icons.add),
            label: const Text('Ajouter'),
            backgroundColor: Colors.green,
            foregroundColor: Colors.white,
          ),
        ],
      ),
      body: Column(
        children: [
          // Barre de recherche et filtres

          Container(
            padding: const EdgeInsets.all(16),
            color: Colors.grey.shade100,
            child: Column(
              children: [
                // Card d'information sur l'attribution (desktop uniquement)
                if (!isMobile && _userController.pointDeVenteId > 0)
                  _buildAssignmentScanCard(),

                // Barre de recherche
                Row(
                  children: [
                    Expanded(
                      child: TextField(
                        controller: _searchController,
                        decoration: InputDecoration(
                          labelText: 'Rechercher...',
                          prefixIcon: const Icon(Icons.search),
                          border: OutlineInputBorder(
                            borderRadius: BorderRadius.circular(8),
                          ),
                          filled: true,
                          fillColor: Colors.white,
                        ),
                      ),
                    ),
                    const SizedBox(width: 16),
                    Container(
                      padding: const EdgeInsets.symmetric(horizontal: 12),
                      decoration: BoxDecoration(
                        color: Colors.white,
                        borderRadius: BorderRadius.circular(8),
                        border: Border.all(color: Colors.grey.shade300),
                      ),
                      child: DropdownButton<String>(
                        value: _selectedCategory,
                        items: _categories
                            .map((category) => DropdownMenuItem(
                                value: category, child: Text(category)))
                            .toList(),
                        onChanged: (value) {
                          setState(() {
                            _selectedCategory = value!;
                            _filterProducts();
                          });
                        },
                        underline: const SizedBox(),
                        hint: const Text('Catégorie'),
                      ),
                    ),
                  ],
                ),

                // Boutons pour mobile
                if (isMobile) ...[
                  const SizedBox(height: 12),
                  if (_userController.pointDeVenteId > 0)
                    Row(
                      children: [
                        Expanded(
                          child: ElevatedButton.icon(
                            icon: (_isScanning || _isAssigning)
                                ? const SizedBox(
                                    width: 16,
                                    height: 16,
                                    child: CircularProgressIndicator(
                                      strokeWidth: 2,
                                      color: Colors.white,
                                    ),
                                  )
                                : const Icon(Icons.assignment),
                            label: Text((_isScanning || _isAssigning)
                                ? 'Attribution...'
                                : 'Assigner produits'),
                            onPressed: (_isScanning || _isAssigning)
                                ? null
                                : _startPointDeVenteAssignmentScanning,
                            style: ElevatedButton.styleFrom(
                              backgroundColor: (_isScanning || _isAssigning)
                                  ? Colors.grey
                                  : Colors.orange.shade700,
                              foregroundColor: Colors.white,
                              minimumSize: const Size(double.infinity, 48),
                              shape: RoundedRectangleBorder(
                                borderRadius: BorderRadius.circular(12),
                              ),
                            ),
                          ),
                        ),
                      ],
                    ),
                ],

                const SizedBox(height: 12),

                // Compteur de produits
                Row(
                  mainAxisAlignment: MainAxisAlignment.spaceBetween,
                  children: [
                    Text(
                      '${_filteredProducts.length} produit(s) trouvé(s)',
                      style: const TextStyle(
                        fontSize: 14,
                        fontWeight: FontWeight.w500,
                        color: Colors.grey,
                      ),
                    ),
                    if (_userController.pointDeVenteId > 0)
                      Container(
                        padding: const EdgeInsets.symmetric(
                            horizontal: 8, vertical: 4),
                        decoration: BoxDecoration(
                          color: Colors.orange.shade100,
                          borderRadius: BorderRadius.circular(12),
                        ),
                        child: Text(
                          'PV: ${_userController.pointDeVenteDesignation}',
                          style: TextStyle(
                            fontSize: 12,
                            fontWeight: FontWeight.w600,
                            color: Colors.orange.shade700,
                          ),
                        ),
                      ),
                    if (_searchController.text.isNotEmpty ||
                        _selectedCategory != 'Tous')
                      TextButton.icon(
                        onPressed: () {
                          setState(() {
                            _searchController.clear();
                            _selectedCategory = 'Tous';
                            _filterProducts();
                          });
                        },
                        icon: const Icon(Icons.clear, size: 16),
                        label: const Text('Réinitialiser'),
                        style: TextButton.styleFrom(
                          foregroundColor: Colors.orange,
                        ),
                      ),
                  ],
                ),
              ],
            ),
          ),
          _buildImportProgressIndicator(),
          // Liste des produits
          Expanded(
            child: _isLoading
                ? const Center(child: CircularProgressIndicator())
                : _filteredProducts.isEmpty
                    ? Center(
                        child: Column(
                          mainAxisAlignment: MainAxisAlignment.center,
                          children: [
                            Icon(
                              Icons.inventory_2_outlined,
                              size: 64,
                              color: Colors.grey.shade400,
                            ),
                            const SizedBox(height: 16),
                            Text(
                              _products.isEmpty
                                  ? 'Aucun produit enregistré'
                                  : 'Aucun produit trouvé pour cette recherche',
                              style: TextStyle(
                                fontSize: 18,
                                color: Colors.grey.shade600,
                                fontWeight: FontWeight.w500,
                              ),
                            ),
                            const SizedBox(height: 8),
                            Text(
                              _products.isEmpty
                                  ? 'Commencez par ajouter votre premier produit'
                                  : 'Essayez de modifier vos critères de recherche',
                              style: TextStyle(
                                fontSize: 14,
                                color: Colors.grey.shade500,
                              ),
                            ),
                          ],
                        ),
                      )
                    : RefreshIndicator(
                        onRefresh: _loadProducts,
                        child: ListView.builder(
                          itemCount: _filteredProducts.length,
                          itemBuilder: (context, index) {
                            final product = _filteredProducts[index];
                            return _buildProductCard(product);
                          },
                        ),
                      ),
          ),
        ],
      ),
    );
  }
}