class ShopInfo {
  final int id;
  final String code;
  final String name;
  final String address;
  final String phone;
  final String managerName;
  final String logoUrl;
  final String wechatId;
  // 店级动态配置（后端 shops.custom_fields JSON），存录入默认值等轻量配置
  final Map<String, dynamic> customFields;

  const ShopInfo({
    required this.id,
    required this.code,
    required this.name,
    required this.address,
    required this.phone,
    required this.managerName,
    this.logoUrl = '',
    this.wechatId = '',
    this.customFields = const {},
  });

  /// 入库录入默认商品名称选项 id（未配置返回 null）。
  int? get defaultNameId => _asInt(customFields['default_name_id']);

  /// 入库录入默认系列选项 id（未配置返回 null）。
  int? get defaultSeriesId => _asInt(customFields['default_series_id']);

  /// 入库录入默认规格选项 id（未配置返回 null）。
  int? get defaultSpecId => _asInt(customFields['default_spec_id']);

  static int? _asInt(dynamic v) {
    if (v == null) return null;
    if (v is num) return v.toInt();
    return int.tryParse(v.toString());
  }

  factory ShopInfo.fromJson(Map<String, dynamic> json) => ShopInfo(
        id: (json['id'] as num).toInt(),
        code: json['code'] as String? ?? '',
        name: json['name'] as String? ?? '',
        address: json['address'] as String? ?? '',
        phone: json['phone'] as String? ?? '',
        managerName: json['manager_name'] as String? ?? '',
        logoUrl: json['logo_url'] as String? ?? '',
        wechatId: json['wechat_id'] as String? ?? '',
        customFields:
            (json['custom_fields'] as Map?)?.cast<String, dynamic>() ??
                const {},
      );
}