import 'product_image.dart';

class Product {
  final int id;
  final String publicId;
  final String code;
  final String? barcode;
  final String name;
  final String? series;
  final String? spec;
  final String unit;
  final int? categoryId;
  final String? brand;
  final double? purchasePrice;
  final double? salePrice;
  final int? minStock;
  final String? description;
  final String? remark;
  final Map<String, dynamic>? customFields;
  final List<ProductImage> images;
  // 产地/保质期/储存方式/分类名称（Detail 接口 Preload 后填充）
  final String? originName;
  final String? shelfLifeName;
  final String? storageName;
  final String? categoryName;
  // 描述文档（关联的字典记录）
  final String? descriptionDocTitle;
  final String? descriptionDocContent;

  const Product({
    required this.id,
    this.publicId = '',
    required this.code,
    this.barcode,
    required this.name,
    this.series,
    this.spec,
    required this.unit,
    this.categoryId,
    this.brand,
    this.purchasePrice,
    this.salePrice,
    this.minStock,
    this.description,
    this.remark,
    this.customFields,
    this.images = const [],
    this.originName,
    this.shelfLifeName,
    this.storageName,
    this.categoryName,
    this.descriptionDocTitle,
    this.descriptionDocContent,
  });

  factory Product.fromJson(Map<String, dynamic> json) => Product(
        id: (json['id'] as num).toInt(),
        publicId: json['public_id'] as String? ?? '',
        code: json['code'] as String? ?? '',
        barcode: json['barcode'] as String?,
        name: json['name'] as String,
        series: json['series'] as String?,
        spec: json['spec'] as String?,
        unit: json['unit'] as String? ?? '个',
        categoryId: json['category_id'] != null
            ? (json['category_id'] as num).toInt()
            : null,
        brand: json['brand'] as String?,
        purchasePrice: json['purchase_price'] != null
            ? (json['purchase_price'] as num).toDouble()
            : null,
        salePrice: json['sale_price'] != null
            ? (json['sale_price'] as num).toDouble()
            : null,
        minStock: json['min_stock'] != null
            ? (json['min_stock'] as num).toInt()
            : null,
        description: json['description'] as String?,
        remark: json['remark'] as String?,
        customFields: json['custom_fields'] as Map<String, dynamic>?,
        images: (json['images'] as List<dynamic>?)
                ?.map((e) => ProductImage.fromJson(e as Map<String, dynamic>))
                .toList() ??
            [],
        originName: (json['origin'] as Map<String, dynamic>?)?['name'] as String?,
        shelfLifeName: (json['shelf_life'] as Map<String, dynamic>?)?['name'] as String?,
        storageName: (json['storage'] as Map<String, dynamic>?)?['name'] as String?,
        categoryName: (json['category'] as Map<String, dynamic>?)?['name'] as String?,
        descriptionDocTitle: (json['description_doc'] as Map<String, dynamic>?)?['title'] as String?,
        descriptionDocContent: (json['description_doc'] as Map<String, dynamic>?)?['content'] as String?,
      );

  Map<String, dynamic> toJson() => {
        'code': code,
        if (barcode != null) 'barcode': barcode,
        'name': name,
        if (series != null) 'series': series,
        if (spec != null) 'spec': spec,
        'unit': unit,
        if (categoryId != null) 'category_id': categoryId,
        if (brand != null) 'brand': brand,
        if (purchasePrice != null) 'purchase_price': purchasePrice,
        if (salePrice != null) 'sale_price': salePrice,
        if (minStock != null) 'min_stock': minStock,
        'description': description ?? '',
        if (remark != null) 'remark': remark,
      };
}