chore: release server-v1.0.71

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YZ4DskSRKsSiheQonFtQvx

backend/internal/handler/public.go

@@ -202,12 +202,14 @@ type publicProductImage struct {
 type publicProductResp struct {
 	ID        uint64               `json:"id"`
 	PublicID  string               `json:"public_id"`
+	Code      string               `json:"code"`
 	Name      string               `json:"name"`
 	Series    string               `json:"series"`
 	Spec      string               `json:"spec"`
 	Brand     string               `json:"brand"`
 	Unit      string               `json:"unit"`
 	SalePrice float64              `json:"sale_price"`
+	Quantity  float64              `json:"quantity"`
 	Images    []publicProductImage `json:"images"`
 }
 
@@ -234,8 +236,15 @@ func (h *PublicHandler) ListShopProducts(c *gin.Context) {
 		pageSize = 20
 	}
 
+	// 仅列「有库存」的商品：JOIN 库存按 product 聚合（数量>0）的子查询。
+	stockSub := h.db.Model(&model.Inventory{}).
+		Select("product_id, SUM(quantity) AS qty").
+		Where("shop_id = ? AND deleted_at IS NULL AND quantity > 0", shop.ID).
+		Group("product_id")
+
 	query := h.db.Model(&model.Product{}).
-		Where("shop_id = ? AND public_id IS NOT NULL AND public_id != '' AND deleted_at IS NULL", shop.ID)
+		Joins("JOIN (?) AS stk ON stk.product_id = products.id", stockSub).
+		Where("products.shop_id = ? AND products.public_id IS NOT NULL AND products.public_id != '' AND products.deleted_at IS NULL", shop.ID)
 
 	var total int64
 	if err := query.Count(&total).Error; err != nil {
@@ -248,12 +257,33 @@ func (h *PublicHandler) ListShopProducts(c *gin.Context) {
 	if err := query.Preload("Images").
 		Offset(offset).
 		Limit(pageSize).
-		Order("id DESC").
+		Order("products.id DESC").
 		Find(&products).Error; err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
 	}
 
+	// 取本页商品的在库总量（IN 限定在本页 ≤pageSize 个 id，开销小）
+	qtyMap := make(map[uint64]float64, len(products))
+	if len(products) > 0 {
+		pageIDs := make([]uint64, len(products))
+		for i, p := range products {
+			pageIDs[i] = p.ID
+		}
+		var stockRows []struct {
+			ProductID uint64
+			Qty       float64
+		}
+		h.db.Model(&model.Inventory{}).
+			Select("product_id, SUM(quantity) AS qty").
+			Where("shop_id = ? AND deleted_at IS NULL AND quantity > 0 AND product_id IN ?", shop.ID, pageIDs).
+			Group("product_id").
+			Scan(&stockRows)
+		for _, s := range stockRows {
+			qtyMap[s.ProductID] = s.Qty
+		}
+	}
+
 	listData := make([]publicProductResp, len(products))
 	for i, p := range products {
 		imgs := make([]publicProductImage, len(p.Images))
@@ -263,12 +293,14 @@ func (h *PublicHandler) ListShopProducts(c *gin.Context) {
 		listData[i] = publicProductResp{
 			ID:        p.ID,
 			PublicID:  p.PublicID,
+			Code:      p.Code,
 			Name:      p.Name,
 			Series:    p.Series,
 			Spec:      p.Spec,
 			Brand:     p.Brand,
 			Unit:      p.Unit,
 			SalePrice: p.SalePrice,
+			Quantity:  qtyMap[p.ID],
 			Images:    imgs,
 		}
 	}