11

utils/shopping_cart/caculate_cart_price.go

@@ -1,21 +1,44 @@
 package shopping_cart
 
 import (
+	"errors"
+	"fmt"
+	"fusenapi/model/gmodel"
+	"fusenapi/utils/format"
 	"fusenapi/utils/step_price"
+	"github.com/zeromicro/go-zero/core/logx"
 	"math"
+	"strings"
 )
 
 // 计算价格
-func CaculateCartPrice(purchaseQuantity int64, stepPrice, stepNum []int, fittingPrice, eachBoxNum int64) (ItemPrice, totalPrice int64) {
+func CaculateCartPrice(purchaseQuantity int64, productPrice *gmodel.FsProductPrice, fittingPrice int64) (ItemPrice, totalPrice int64, stepNum, stepPrice []int, err error) {
+	//阶梯数量切片
+	stepNum, err = format.StrSlicToIntSlice(strings.Split(*productPrice.StepNum, ","))
+	if err != nil {
+		logx.Error(err)
+		return 0, 0, nil, nil, errors.New(fmt.Sprintf("failed to parse step number:%d_%d", *productPrice.ProductId, *productPrice.SizeId))
+	}
+	lenStepNum := len(stepNum)
+	//阶梯价格切片
+	stepPrice, err = format.StrSlicToIntSlice(strings.Split(*productPrice.StepPrice, ","))
+	if err != nil {
+		logx.Error(err)
+		return 0, 0, nil, nil, errors.New(fmt.Sprintf("failed to parse step price:%d_%d", *productPrice.ProductId, *productPrice.SizeId))
+	}
+	lenStepPrice := len(stepPrice)
+	if lenStepPrice == 0 || lenStepNum == 0 {
+		return 0, 0, nil, nil, errors.New(fmt.Sprintf("step price or step number is not set:%d_%d", *productPrice.ProductId, *productPrice.SizeId))
+	}
 	//请求的数量
 	reqPurchaseQuantity := purchaseQuantity
 	//购买箱数
-	boxQuantity := int(math.Ceil(float64(reqPurchaseQuantity) / float64(eachBoxNum)))
+	boxQuantity := int(math.Ceil(float64(reqPurchaseQuantity) / float64(*productPrice.EachBoxNum)))
 	//根据数量获取阶梯价格中对应的价格
 	itemPrice := step_price.GetCentStepPrice(boxQuantity, stepNum, stepPrice)
 	//如果有配件，单价也要加入配件价格
 	itemPrice += fittingPrice
 	//单个购物车总价
 	totalPrice = itemPrice * reqPurchaseQuantity
-	return itemPrice, totalPrice
+	return itemPrice, totalPrice, stepNum, stepPrice, nil
 }