// Models/product.dart - Version corrigée pour gérer les Blobs
import 'dart:typed_data';
import 'dart:convert';

class Product {
  final int? id;
  final String name;
  final double price;
  final String? image;
  final String category;
  final int stock;
  final String? description;
  String? qrCode;
  final String? reference;
  final int? pointDeVenteId;
  final String? marque;
  final String? ram;
  final String? memoireInterne;
  final String? imei;

  Product({
    this.id,
    required this.name,
    required this.price,
    this.image,
    required this.category,
    this.stock = 0,
    this.description,
    this.qrCode,
    this.reference,
    this.pointDeVenteId,
    this.marque,
    this.ram,
    this.memoireInterne,
    this.imei,
  });

  bool isStockDefined() {
    return stock > 0;
  }

  // Méthode helper pour convertir de façon sécurisée
  static String? _convertImageFromMap(dynamic imageValue) {
    if (imageValue == null) {
      return null;
    }
    
    // Si c'est déjà une String, on la retourne
    if (imageValue is String) {
      return imageValue;
    }
    
    // Le driver mysql1 peut retourner un Blob même pour TEXT
    // Essayer de le convertir en String
    try {
      if (imageValue is Uint8List) {
        // Convertir les bytes en String UTF-8
        return utf8.decode(imageValue);
      }
      
      if (imageValue is List<int>) {
        // Convertir les bytes en String UTF-8
        return utf8.decode(imageValue);
      }
      
      // Dernier recours : toString()
      return imageValue.toString();
    } catch (e) {
      print("Erreur conversion image: $e, type: ${imageValue.runtimeType}");
      return null;
    }
  }

  factory Product.fromMap(Map<String, dynamic> map) => Product(
    id: map['id'] as int?,
    name: map['name'] as String,
    price: (map['price'] as num).toDouble(), // Conversion sécurisée
    image: _convertImageFromMap(map['image']), // Utilisation de la méthode helper
    category: map['category'] as String,
    stock: (map['stock'] as int?) ?? 0, // Valeur par défaut
    description: map['description'] as String?,
    qrCode: map['qrCode'] as String?,
    reference: map['reference'] as String?,
    pointDeVenteId: map['point_de_vente_id'] as int?,
    marque: map['marque'] as String?,
    ram: map['ram'] as String?,
    memoireInterne: map['memoire_interne'] as String?,
    imei: map['imei'] as String?,
  );

  Map<String, dynamic> toMap() => {
    'id': id,
    'name': name,
    'price': price,
    'image': image,
    'category': category,
    'stock': stock,
    'description': description,
    'qrCode': qrCode,
    'reference': reference,
    'point_de_vente_id': pointDeVenteId,
    'marque': marque,
    'ram': ram,
    'memoire_interne': memoireInterne,
    'imei': imei,
  };

  // Méthode pour obtenir l'image comme base64 si nécessaire
  String? getImageAsBase64() {
    if (image == null) return null;
    
    // Si l'image est déjà en base64, la retourner
    if (image!.startsWith('data:') || image!.length > 100) {
      return image;
    }
    
    // Sinon, c'est probablement un chemin de fichier
    return image;
  }

  // Méthode pour vérifier si l'image est un base64
  bool get isImageBase64 {
    if (image == null) return false;
    return image!.startsWith('data:') || 
           (image!.length > 100 && !image!.contains('/') && !image!.contains('\\'));
  }

  // Copie avec modification
  Product copyWith({
    int? id,
    String? name,
    double? price,
    String? image,
    String? category,
    int? stock,
    String? description,
    String? qrCode,
    String? reference,
    int? pointDeVenteId,
    String? marque,
    String? ram,
    String? memoireInterne,
    String? imei,
  }) {
    return Product(
      id: id ?? this.id,
      name: name ?? this.name,
      price: price ?? this.price,
      image: image ?? this.image,
      category: category ?? this.category,
      stock: stock ?? this.stock,
      description: description ?? this.description,
      qrCode: qrCode ?? this.qrCode,
      reference: reference ?? this.reference,
      pointDeVenteId: pointDeVenteId ?? this.pointDeVenteId,
      marque: marque ?? this.marque,
      ram: ram ?? this.ram,
      memoireInterne: memoireInterne ?? this.memoireInterne,
      imei: imei ?? this.imei,
    );
  }
}