feat: 更新商城前后端代码

mengyastore-backend-go/internal/storage/productstore.go

@@ -240,6 +240,32 @@ func (s *ProductStore) IncrementView(id, fingerprint string) (models.Product, bo
 	return rowToModel(row, nil), true, nil
 }
 
+// IncrementViewCount atomically increments view_count by 1 and returns the
+// updated product (without codes). It is called by the handler when Redis-based
+// deduplication has already confirmed this is a new view, so no in-memory lock
+// is needed here.
+func (s *ProductStore) IncrementViewCount(id string) (models.Product, error) {
+	if err := s.db.Model(&database.ProductRow{}).Where("id = ?", id).
+		UpdateColumn("view_count", gorm.Expr("view_count + 1")).Error; err != nil {
+		return models.Product{}, err
+	}
+	var row database.ProductRow
+	if err := s.db.First(&row, "id = ?", id).Error; err != nil {
+		return models.Product{}, fmt.Errorf("product not found")
+	}
+	return rowToModel(row, nil), nil
+}
+
+// GetViewState returns the current product state without modifying any counter.
+// Used by the handler when a view is detected as duplicate via Redis.
+func (s *ProductStore) GetViewState(id string) (models.Product, error) {
+	var row database.ProductRow
+	if err := s.db.First(&row, "id = ?", id).Error; err != nil {
+		return models.Product{}, fmt.Errorf("product not found")
+	}
+	return rowToModel(row, nil), nil
+}
+
 func (s *ProductStore) Delete(id string) error {
 	if err := s.db.Where("product_id = ?", id).Delete(&database.ProductCodeRow{}).Error; err != nil {
 		return err
@@ -272,7 +298,7 @@ func normalizeProduct(item models.Product) models.Product {
 	item.VerificationURL = strings.TrimSpace(item.VerificationURL)
 	item.Codes = sanitizeCodes(item.Codes)
 	item.Quantity = len(item.Codes)
-	if item.DeliveryMode == "" {
+	if item.DeliveryMode == "" || item.DeliveryMode == "manual" {
 		item.DeliveryMode = "auto"
 	}
 	return item