fix

2023-09-20 15:21:42 +08:00
parent f0afda0f26
commit a5f5a83fe8
9 changed files with 159 additions and 108 deletions
--- a/service/repositories/shopping-cart.go
+++ b/service/repositories/shopping-cart.go
@@ -0,0 +1,164 @@
+package repositories
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"fusenapi/model/gmodel"
+	"fusenapi/utils/format"
+	"fusenapi/utils/hash"
+	"fusenapi/utils/step_price"
+	"github.com/aws/aws-sdk-go/aws/session"
+	"github.com/zeromicro/go-zero/core/logx"
+	"gorm.io/gorm"
+	"math"
+	"strings"
+)
+
+func NewShoppingCart(gormDB *gorm.DB, bLMServiceUrl *string, awsSession *session.Session) ShoppingCart {
+	return &defaultShoppingCart{
+		MysqlConn:     gormDB,
+		BLMServiceUrl: bLMServiceUrl,
+		AwsSession:    awsSession,
+	}
+}
+
+type (
+	defaultShoppingCart struct {
+		MysqlConn     *gorm.DB
+		BLMServiceUrl *string
+		AwsSession    *session.Session
+	}
+	ShoppingCart interface {
+		// 校验订单
+		VerifyShoppingCartSnapshotDataChange(req VerifyShoppingCartSnapshotDataChangeReq) error
+		//计算购物车价格
+		CaculateCartPrice(purchaseQuantity int64, productPrice *gmodel.FsProductPrice, fittingPrice int64) (ItemPrice, totalPrice int64, stepNum, stepPrice []int, err error)
+	}
+)
+
+// 校验购物车快照数据跟目前是否一致
+type VerifyShoppingCartSnapshotDataChangeReq struct {
+	Carts         []gmodel.FsShoppingCart
+	MapSize       map[int64]gmodel.FsProductSize
+	MapModel      map[int64]gmodel.FsProductModel3d //模型跟配件都在
+	MapTemplate   map[int64]gmodel.FsProductTemplateV2
+	MapCartChange map[int64]string
+	MapSnapshot   map[int64]gmodel.CartSnapshot
+	MapProduct    map[int64]gmodel.FsProduct
+}
+
+func (d *defaultShoppingCart) VerifyShoppingCartSnapshotDataChange(req VerifyShoppingCartSnapshotDataChangeReq) error {
+	for _, cartInfo := range req.Carts {
+		descrptionBuilder := strings.Builder{}
+		//产品下架/删除
+		if _, ok := req.MapProduct[*cartInfo.ProductId]; !ok {
+			descrptionBuilder.WriteString("<p>the product is off shelf or deleted </p>")
+		}
+		var snapShotParseInfo gmodel.CartSnapshot
+		if err := json.Unmarshal([]byte(*cartInfo.Snapshot), &snapShotParseInfo); err != nil {
+			return err
+		}
+		req.MapSnapshot[cartInfo.Id] = snapShotParseInfo
+		//快照中模板设计json数据哈希值
+		snapshotTemplateJsonHash := hash.JsonHashKey(snapShotParseInfo.TemplateInfo.TemplateJson)
+		//快照中模型设计json数据哈希值
+		snapshotModelJsonHash := hash.JsonHashKey(snapShotParseInfo.ModelInfo.ModelJson)
+		//快照中配件设计json数据哈希值
+		snapshotFittingJsonHash := hash.JsonHashKey(snapShotParseInfo.FittingInfo.FittingJson)
+		//有模板验证模板相关
+		if *cartInfo.TemplateId > 0 {
+			if curTemplateInfo, ok := req.MapTemplate[*cartInfo.TemplateId]; !ok {
+				descrptionBuilder.WriteString("<p>the template is lose</p>")
+			} else {
+				//当前模板设计json数据哈希值
+				curTemplateJsonHash := hash.JsonHashKey(*curTemplateInfo.TemplateInfo)
+				//模板设计信息改变了
+				if snapshotTemplateJsonHash != curTemplateJsonHash {
+					descrptionBuilder.WriteString("<p>the template design info has changed</p>")
+				}
+				//模板标签改变了
+				if snapShotParseInfo.TemplateInfo.TemplateTag != *curTemplateInfo.TemplateTag {
+					descrptionBuilder.WriteString("<p>the template`s template tag has changed</p>")
+				}
+			}
+		}
+		//有模型验证模型相关
+		if *cartInfo.ModelId > 0 {
+			if curModelInfo, ok := req.MapModel[*cartInfo.ModelId]; !ok { //不存在
+				descrptionBuilder.WriteString("<p>the model is lose</p>")
+			} else {
+				//当前模型设计json数据哈希值
+				curModelJsonHash := hash.JsonHashKey(*curModelInfo.ModelInfo)
+				if snapshotModelJsonHash != curModelJsonHash {
+					descrptionBuilder.WriteString("<p>the model design info has changed</p>")
+				}
+			}
+		}
+		//有配件验证配件相关
+		if *cartInfo.FittingId > 0 {
+			if curFittingInfo, ok := req.MapModel[*cartInfo.FittingId]; !ok { //不存在
+				descrptionBuilder.WriteString("<p>the fitting is lose</p>")
+			} else {
+				//当前配件设计json数据哈希值
+				curFittingJsonHash := hash.JsonHashKey(*curFittingInfo.ModelInfo)
+				if snapshotFittingJsonHash != curFittingJsonHash {
+					descrptionBuilder.WriteString("<p>the fitting design info has changed</p>")
+				}
+			}
+		}
+		//验证尺寸相关
+		if *cartInfo.SizeId > 0 {
+			curSize, ok := req.MapSize[*cartInfo.SizeId]
+			if !ok {
+				descrptionBuilder.WriteString("<p>the size is lose</p>")
+			} else {
+				var curSizeTitle gmodel.SizeInfo
+				if err := json.Unmarshal([]byte(*curSize.Title), &curSizeTitle); err != nil {
+					return err
+				}
+				if snapShotParseInfo.SizeInfo.Inch != curSizeTitle.Inch || snapShotParseInfo.SizeInfo.Cm != curSizeTitle.Cm {
+					descrptionBuilder.WriteString("<p>the size design info has changed</p>")
+				}
+			}
+		}
+		//收集错误
+		descrption := descrptionBuilder.String()
+		if descrption != "" {
+			req.MapCartChange[cartInfo.Id] = descrption
+		}
+	}
+	return nil
+}
+
+// 计算价格
+func (d *defaultShoppingCart) 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(*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, stepNum, stepPrice, nil
+}