资产详情新增两个字段

internal/store/postgres/package_usage_store.go

@@ -301,6 +301,40 @@ func (s *PackageUsageStore) ListByCarrier(ctx context.Context, carrierType strin
 	return usages, nil
 }
 
+// GetCurrentGenerationUsagesForSummary 查询当前世代内所有已激活过的套餐记录（含加油包），用于流量汇总。
+// 当前世代定义：status∈{1,2,3,4} 中 generation 最大值所在的那一批记录。
+// 返回计算所需字段：DataUsageMB、DataLimitMB、VirtualTotalMBSnapshot、DisplayGainRatioSnapshot、EnableVirtualDataSnapshot。
+func (s *PackageUsageStore) GetCurrentGenerationUsagesForSummary(ctx context.Context, carrierType string, carrierID uint) ([]*model.PackageUsage, error) {
+	var usages []*model.PackageUsage
+
+	// 子查询取当前世代编号
+	subQuery := s.db.WithContext(ctx).Model(&model.PackageUsage{}).
+		Select("MAX(generation)").
+		Where("status IN ?", []int{
+			constants.PackageUsageStatusActive,
+			constants.PackageUsageStatusDepleted,
+			constants.PackageUsageStatusExpired,
+			constants.PackageUsageStatusInvalidated,
+		})
+	subQuery = applyPackageUsageCarrierFilter(subQuery, carrierType, carrierID)
+
+	query := s.db.WithContext(ctx).Model(&model.PackageUsage{}).
+		Select("data_usage_mb, data_limit_mb, virtual_total_mb_snapshot, display_gain_ratio_snapshot, enable_virtual_data_snapshot").
+		Where("status IN ?", []int{
+			constants.PackageUsageStatusActive,
+			constants.PackageUsageStatusDepleted,
+			constants.PackageUsageStatusExpired,
+			constants.PackageUsageStatusInvalidated,
+		}).
+		Where("generation = (?)", subQuery)
+	query = applyPackageUsageCarrierFilter(query, carrierType, carrierID)
+
+	if err := query.Find(&usages).Error; err != nil {
+		return nil, err
+	}
+	return usages, nil
+}
+
 func applyPackageUsageCarrierFilter(query *gorm.DB, carrierType string, carrierID uint) *gorm.DB {
 	if carrierType == "iot_card" {
 		return query.Where("iot_card_id = ?", carrierID)