update

internal/repository/street_snap_repository.go

@@ -48,6 +48,10 @@ type StreetSnapRepository interface {
 	GetSnapImageRunwayID(ctx context.Context, imageID uint32) (uint32, error)
 	// ReresolveSnapDedup 删图后重算本专辑去重，消除陈旧 dup_of（见方法注释）。
 	ReresolveSnapDedup(ctx context.Context, snapID uint32) error
+	// ReresolveSnapDupOfSources 删图后清理「以被删图为源」的跨文章重复标记（见方法注释）。
+	ReresolveSnapDupOfSources(ctx context.Context, deletedImageIDs []uint32) error
+	// GetSnapLiveImageIDs 取某街拍全部存活图片 id（级联下架前用于跨文章去重清理）。
+	GetSnapLiveImageIDs(ctx context.Context, snapID uint32) ([]uint32, error)
 	// SoftDeleteSnapImages 软删某街拍的全部图片（级联下架用），返回被删图片的 key 列表。
 	SoftDeleteSnapImages(ctx context.Context, snapID uint32) ([]string, error)
 	// SetSnapCover 更新街拍封面。
@@ -421,6 +425,57 @@ func (r *streetSnapRepository) ReresolveSnapDedup(ctx context.Context, snapID ui
 	})
 }
 
+// ReresolveSnapDupOfSources 删除图片后，清理「以被删图为源」的跨文章重复标记（见方法注释）。
+// 逻辑同 ReresolveRunwayDupOfSources，仅表换成 street_snap_images。
+func (r *streetSnapRepository) ReresolveSnapDupOfSources(ctx context.Context, deletedImageIDs []uint32) error {
+	if len(deletedImageIDs) == 0 {
+		return nil
+	}
+	strIDs := make([]string, 0, len(deletedImageIDs))
+	for _, id := range deletedImageIDs {
+		strIDs = append(strIDs, strconv.FormatUint(uint64(id), 10))
+	}
+	var affected []model.StreetSnapImage
+	if err := r.db.WithContext(ctx).
+		Where("is_deleted = 0 AND dup_of IN ?", strIDs).
+		Find(&affected).Error; err != nil {
+		return err
+	}
+	if len(affected) == 0 {
+		return nil
+	}
+	return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		for _, im := range affected {
+			if !im.Phash.Valid || im.Phash.String == "" {
+				if err := tx.Model(&model.StreetSnapImage{}).
+					Where("id = ? AND is_deleted = 0", im.ID).
+					Updates(map[string]any{"is_duplicate": 0, "dup_of": ""}).Error; err != nil {
+					return err
+				}
+				continue
+			}
+			src, err := nearDupExceptSnap(tx, im.Phash.String, phash.DefaultThreshold, im.ID, im.SnapID, im.SortOrder)
+			if err != nil {
+				return err
+			}
+			if src != 0 && src != im.ID {
+				if err := tx.Model(&model.StreetSnapImage{}).
+					Where("id = ? AND is_deleted = 0", im.ID).
+					Updates(map[string]any{"is_duplicate": 1, "dup_of": strconv.FormatUint(uint64(src), 10)}).Error; err != nil {
+					return err
+				}
+			} else {
+				if err := tx.Model(&model.StreetSnapImage{}).
+					Where("id = ? AND is_deleted = 0", im.ID).
+					Updates(map[string]any{"is_duplicate": 0, "dup_of": ""}).Error; err != nil {
+					return err
+				}
+			}
+		}
+		return nil
+	})
+}
+
 // GetStreetSnapDupSources 批量反查重复源（见接口注释）。街拍无品牌关联；一次 IN 查询 + JOIN。
 func (r *streetSnapRepository) GetStreetSnapDupSources(ctx context.Context, imageIDs []uint32) (map[uint32]dto.DupSource, error) {
 	out := make(map[uint32]dto.DupSource, len(imageIDs))
@@ -487,6 +542,18 @@ func (r *streetSnapRepository) SoftDeleteSnapImages(ctx context.Context, snapID
 	return keys, nil
 }
 
+// GetSnapLiveImageIDs 取某街拍全部存活图片的 id（级联下架前取出，供跨文章去重清理）。
+func (r *streetSnapRepository) GetSnapLiveImageIDs(ctx context.Context, snapID uint32) ([]uint32, error) {
+	var ids []uint32
+	if err := r.db.WithContext(ctx).
+		Model(&model.StreetSnapImage{}).
+		Where("snap_id = ? AND is_deleted = 0", snapID).
+		Pluck("id", &ids).Error; err != nil {
+		return nil, err
+	}
+	return ids, nil
+}
+
 func (r *streetSnapRepository) SetSnapCover(ctx context.Context, snapID uint32, image string) error {
 	return r.db.WithContext(ctx).
 		Model(&model.StreetSnap{}).