update

internal/repository/street_snap_repository.go

@@ -54,6 +54,8 @@ type StreetSnapRepository interface {
 	SetSnapCover(ctx context.Context, snapID uint32, image string) error
 	// SetSnapDeleted 上下架：deleted=1 下架，0 上架。
 	SetSnapDeleted(ctx context.Context, id uint32, deleted uint8) error
+	// SumImageSize 返回某条街拍全部存活图片的原图字节数之和（供后台「图集原图总大小」展示）。
+	SumImageSize(ctx context.Context, snapID uint32) (int64, error)
 }
 
 type streetSnapRepository struct {
@@ -498,3 +500,14 @@ func (r *streetSnapRepository) SetSnapDeleted(ctx context.Context, id uint32, de
 		Where("id = ?", id).
 		Updates(map[string]any{"is_deleted": deleted, "updated_at": uint32(time.Now().Unix())}).Error
 }
+
+// SumImageSize 返回某条街拍全部存活图片的原图字节数之和（image_size 由 worker 下载时写入源文件字节数）。
+func (r *streetSnapRepository) SumImageSize(ctx context.Context, snapID uint32) (int64, error) {
+	var total int64
+	err := r.db.WithContext(ctx).
+		Model(&model.StreetSnapImage{}).
+		Where("snap_id = ? AND is_deleted = 0", snapID).
+		Select("COALESCE(SUM(image_size), 0)").
+		Scan(&total).Error
+	return total, err
+}