优化

internal/repository/emby_mount_repository.go

@@ -15,7 +15,14 @@ type EmbyMountRepository struct{ db *gorm.DB }
 
 func (r *EmbyMountRepository) Create(ctx context.Context, m *model.EmbyMount) error {
 	return withSQLiteBusyRetry(ctx, func() error {
-		return r.db.WithContext(ctx).Create(m).Error
+		return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+			if m != nil && m.SortOrder == 0 {
+				var maxSort int
+				_ = tx.Model(&model.EmbyMount{}).Select("COALESCE(MAX(sort_order), -1)").Scan(&maxSort)
+				m.SortOrder = maxSort + 1
+			}
+			return tx.Create(m).Error
+		})
 	})
 }
 
@@ -27,7 +34,17 @@ func (r *EmbyMountRepository) CreateInBatches(ctx context.Context, mounts []*mod
 		batchSize = 50
 	}
 	return withSQLiteBusyRetry(ctx, func() error {
-		return r.db.WithContext(ctx).CreateInBatches(mounts, batchSize).Error
+		return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+			var maxSort int
+			_ = tx.Model(&model.EmbyMount{}).Select("COALESCE(MAX(sort_order), -1)").Scan(&maxSort)
+			for _, m := range mounts {
+				if m != nil && m.SortOrder == 0 {
+					maxSort++
+					m.SortOrder = maxSort
+				}
+			}
+			return tx.CreateInBatches(mounts, batchSize).Error
+		})
 	})
 }
 
@@ -45,16 +62,33 @@ func (r *EmbyMountRepository) FindByID(ctx context.Context, id string) (*model.E
 
 func (r *EmbyMountRepository) List(ctx context.Context) ([]model.EmbyMount, error) {
 	var rows []model.EmbyMount
-	err := r.db.WithContext(ctx).Order("created_at desc").Find(&rows).Error
+	err := r.db.WithContext(ctx).Order("sort_order asc, created_at asc").Find(&rows).Error
 	return rows, err
 }
 
 func (r *EmbyMountRepository) ListByAccountID(ctx context.Context, accountID string) ([]model.EmbyMount, error) {
 	var rows []model.EmbyMount
-	err := r.db.WithContext(ctx).Where("account_id = ?", accountID).Order("created_at asc").Find(&rows).Error
+	err := r.db.WithContext(ctx).Where("account_id = ?", accountID).Order("sort_order asc, created_at asc").Find(&rows).Error
 	return rows, err
 }
 
+func (r *EmbyMountRepository) SetSortOrder(ctx context.Context, ids []string) error {
+	if len(ids) == 0 {
+		return nil
+	}
+	return withSQLiteBusyRetry(ctx, func() error {
+		return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+			for i, id := range ids {
+				if err := tx.Model(&model.EmbyMount{}).Where("id = ?", id).
+					Update("sort_order", i).Error; err != nil {
+					return err
+				}
+			}
+			return nil
+		})
+	})
+}
+
 func (r *EmbyMountRepository) CountByAccountID(ctx context.Context, accountID string) (int64, error) {
 	var count int64
 	err := r.db.WithContext(ctx).Model(&model.EmbyMount{}).Where("account_id = ?", accountID).Count(&count).Error