优化支付流程，扩展产品价格返回字段

web/services/product.go

@@ -6,6 +6,7 @@ import (
 	q "platform/web/queries"
 	"time"
 
+	"github.com/shopspring/decimal"
 	"gorm.io/gen/field"
 )
 
@@ -20,7 +21,7 @@ func (s *productService) AllProducts() ([]*m.Product, error) {
 		Find()
 }
 
-func (s *productService) AllProductSaleInfos() ([]*m.Product, error) {
+func (s *productService) AllProductSaleInfos() ([]any, error) {
 	products, err := q.Product.
 		Select(
 			q.Product.ID,
@@ -43,7 +44,17 @@ func (s *productService) AllProductSaleInfos() ([]*m.Product, error) {
 		pids[i] = p.ID
 	}
 
-	skus, err := q.ProductSku.
+	type SkuInfo struct {
+		ID        int32           `json:"id"`
+		ProductID int32           `json:"product_id"`
+		Name      string          `json:"name"`
+		Code      string          `json:"code"`
+		Price     decimal.Decimal `json:"price"`
+		CountMin  decimal.Decimal `json:"count_min"`
+		Discount  float64         `json:"discount"`
+	}
+	var skus []*SkuInfo
+	err = q.ProductSku.
 		Select(
 			q.ProductSku.ID,
 			q.ProductSku.ProductID,
@@ -51,29 +62,47 @@ func (s *productService) AllProductSaleInfos() ([]*m.Product, error) {
 			q.ProductSku.Code,
 			q.ProductSku.Price,
 			q.ProductSku.CountMin,
+			q.ProductDiscount.Discount,
 		).
 		Where(
 			q.ProductSku.ProductID.In(pids...),
 			q.ProductSku.Status.Eq(int32(m.SkuStatusEnabled)),
 		).
+		LeftJoin(q.ProductDiscount, q.ProductDiscount.ID.EqCol(q.ProductSku.DiscountId)).
 		Order(q.ProductSku.Sort).
-		Find()
+		Scan(&skus)
 	if err != nil {
 		return nil, err
 	}
 
-	pmap := make(map[int32]*m.Product, len(products))
+	type ProductInfo struct {
+		m.Product
+		Skus []*SkuInfo `json:"skus,omitempty"`
+	}
+	pmap := make(map[int32]*ProductInfo, len(products))
 	for _, p := range products {
-		pmap[p.ID] = p
-		p.Skus = make([]*m.ProductSku, 0)
+		pmap[p.ID] = &ProductInfo{Product: *p, Skus: make([]*SkuInfo, 0)}
 	}
 	for _, s := range skus {
 		if p, ok := pmap[s.ProductID]; ok {
-			p.Skus = append(p.Skus, s)
+			p.Skus = append(p.Skus, &SkuInfo{
+				ID:        s.ID,
+				ProductID: s.ProductID,
+				Name:      s.Name,
+				Code:      s.Code,
+				Price:     s.Price,
+				CountMin:  s.CountMin,
+				Discount:  s.Discount,
+			})
 		}
 	}
 
-	return products, nil
+	plist := make([]any, 0, len(pmap))
+	for _, p := range pmap {
+		plist = append(plist, p)
+	}
+
+	return plist, nil
 }
 
 // 新增产品