292 lines
9.7 KiB
Go
292 lines
9.7 KiB
Go
package logic
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"fusenapi/constants"
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"fusenapi/model/gmodel"
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"fusenapi/server/shopping-cart/internal/svc"
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"fusenapi/server/shopping-cart/internal/types"
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"fusenapi/service/repositories"
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"fusenapi/utils/auth"
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"fusenapi/utils/basic"
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"fusenapi/utils/format"
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"fusenapi/utils/s3url_to_s3id"
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"math"
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"github.com/zeromicro/go-zero/core/logx"
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)
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type GetCartsLogic struct {
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logx.Logger
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ctx context.Context
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svcCtx *svc.ServiceContext
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}
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func NewGetCartsLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetCartsLogic {
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return &GetCartsLogic{
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Logger: logx.WithContext(ctx),
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ctx: ctx,
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svcCtx: svcCtx,
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}
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}
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// 处理进入前逻辑w,r
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// func (l *GetCartsLogic) BeforeLogic(w http.ResponseWriter, r *http.Request) {
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// }
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func (l *GetCartsLogic) GetCarts(req *types.GetCartsReq, userinfo *auth.UserInfo) (resp *basic.Response) {
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if !userinfo.IsUser() {
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return resp.SetStatusWithMessage(basic.CodeUnAuth, "please sign in")
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}
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currentPage := constants.DEFAULT_PAGE
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limit := 300
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if len(req.CartIds) > limit {
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return resp.SetStatusWithMessage(basic.CodeDbSqlErr, "err param:request cart item is too much")
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}
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//获取用户购物车列表
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carts, total, err := l.svcCtx.AllModels.FsShoppingCart.GetAllCartsByParam(l.ctx, gmodel.GetAllCartsByParamReq{
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Ids: req.CartIds,
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UserId: userinfo.UserId,
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Sort: "id DESC",
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Page: currentPage,
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Limit: limit,
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})
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if err != nil {
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logx.Error(err)
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return resp.SetStatusWithMessage(basic.CodeDbSqlErr, "system err:failed to get your shopping carts")
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}
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var (
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mapSize = make(map[int64]gmodel.FsProductSize)
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mapModel = make(map[int64]gmodel.FsProductModel3d)
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mapTemplate = make(map[int64]gmodel.FsProductTemplateV2)
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mapSizePrice = make(map[string]gmodel.FsProductPrice)
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mapProduct = make(map[int64]gmodel.FsProduct)
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mapResourceMetadata = make(map[string]interface{})
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)
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//获取相关信息
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err = l.GetRelationInfo(GetRelationInfoReq{
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Carts: carts,
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MapSize: mapSize,
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MapModel: mapModel,
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MapTemplate: mapTemplate,
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MapSizePrice: mapSizePrice,
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MapProduct: mapProduct,
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MapResourceMetadata: mapResourceMetadata,
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})
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if err != nil {
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return resp.SetStatusWithMessage(basic.CodeServiceErr, err.Error())
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}
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//定义map收集变更信息
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mapCartChange := make(map[int64]string)
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mapSnapshot := make(map[int64]gmodel.CartSnapshot)
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//校验购物车数据是否变更
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err = l.svcCtx.Repositories.NewShoppingCart.VerifyShoppingCartSnapshotDataChange(repositories.VerifyShoppingCartSnapshotDataChangeReq{
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Carts: carts,
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MapSize: mapSize,
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MapModel: mapModel,
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MapTemplate: mapTemplate,
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MapCartChange: mapCartChange,
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MapSnapshot: mapSnapshot,
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MapProduct: mapProduct,
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})
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if err != nil {
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logx.Error("VerifyShoppingCartSnapshotDataChange err:", err.Error())
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return resp.SetStatusWithMessage(basic.CodeServiceErr, "system err:failed to check shopping cart change data")
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}
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list := make([]types.CartItem, 0, len(carts))
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for _, cart := range carts {
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snapShot := mapSnapshot[cart.Id]
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sizePrice, ok := mapSizePrice[fmt.Sprintf("%d_%d", *cart.ProductId, *cart.SizeId)]
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if !ok {
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return resp.SetStatusWithMessage(basic.CodeServiceErr, fmt.Sprintf("the size`s price info is not exists:%d_%d", *cart.ProductId, *cart.SizeId))
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}
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//如果有配件，单价也要加入配件价格
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fittingPrice := int64(0)
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if *cart.FittingId > 0 {
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if curFittingInfo, ok := mapModel[*cart.FittingId]; ok {
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fittingPrice = *curFittingInfo.Price
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} else {
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return resp.SetStatusWithMessage(basic.CodeServiceErr, fmt.Sprintf("cart contain some one witch lose fitting:%d", *cart.FittingId))
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}
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}
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//计算价格
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itemPrice, totalPrice, _, _, err := l.svcCtx.Repositories.NewShoppingCart.CaculateCartPrice(*cart.PurchaseQuantity, &sizePrice, fittingPrice)
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if err != nil {
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logx.Error(err)
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return resp.SetStatusWithMessage(basic.CodeServiceErr, err.Error())
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}
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//尺寸信息
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sizeCapacity := snapShot.SizeInfo.Capacity
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if sizeInfo, ok := mapSize[*cart.SizeId]; ok {
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sizeCapacity = *sizeInfo.Capacity
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}
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//配件信息
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fittingName := snapShot.FittingInfo.FittingName
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if fittingInfo, ok := mapModel[*cart.FittingId]; ok {
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fittingName = *fittingInfo.Name
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}
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productCover := "" //产品封面图
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productName := snapShot.ProductInfo.ProductName
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productSn := snapShot.ProductInfo.ProductSn
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//产品封面图资源元数据
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var productCoverMetadata interface{}
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//产品信息
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if productInfo, ok := mapProduct[*cart.ProductId]; ok {
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productCover = *productInfo.Cover
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productName = *productInfo.Title
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productSn = *productInfo.Sn
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if metadata, ok := mapResourceMetadata[*productInfo.Cover]; ok {
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productCoverMetadata = metadata
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}
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}
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item := types.CartItem{
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CartId: cart.Id,
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ProductInfo: types.ProductInfo{
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ProductId: *cart.ProductId,
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ProductName: productName,
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ProductSn: productSn,
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ProductCover: productCover,
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ProductCoverMetadata: productCoverMetadata,
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},
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SizeInfo: types.SizeInfo{
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SizeId: *cart.SizeId,
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Capacity: sizeCapacity,
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Title: types.SizeTitle{
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Cm: snapShot.SizeInfo.Cm,
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Inch: snapShot.SizeInfo.Inch,
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},
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},
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FittingInfo: types.FittingInfo{
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FittingId: *cart.FittingId,
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FittingName: fittingName,
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},
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ItemPrice: format.CentitoDollar(itemPrice, 3),
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TotalPrice: format.CentitoDollarWithNoHalfAdjust(totalPrice, 2),
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DiyInformation: types.DiyInformation{
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Phone: snapShot.UserDiyInformation.Phone,
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Address: snapShot.UserDiyInformation.Address,
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Website: snapShot.UserDiyInformation.Website,
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Qrcode: snapShot.UserDiyInformation.Qrcode,
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Slogan: snapShot.UserDiyInformation.Slogan,
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},
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PurchaseQuantity: *cart.PurchaseQuantity,
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MinPurchaseQuantity: *sizePrice.EachBoxNum * (*sizePrice.MinBuyNum),
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StepPurchaseQuantity: *sizePrice.EachBoxNum,
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IsHighlyCustomized: *cart.IsHighlyCustomized > 0,
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IsSelected: *cart.IsSelected > 0,
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}
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//是否有失效的
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if description, ok := mapCartChange[cart.Id]; ok {
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item.IsInvalid = true
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item.InvalidDescription = description
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//失效了返回给前端也是不选中
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item.IsSelected = false
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}
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list = append(list, item)
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}
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return resp.SetStatusWithMessage(basic.CodeOK, "success", types.GetCartsRsp{
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Meta: types.Meta{
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TotalCount: total,
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PageCount: int64(math.Ceil(float64(total) / float64(limit))),
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CurrentPage: currentPage,
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PerPage: limit,
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},
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CartList: list,
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})
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}
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// 获取相关信息
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type GetRelationInfoReq struct {
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Carts []gmodel.FsShoppingCart
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MapSize map[int64]gmodel.FsProductSize
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MapModel map[int64]gmodel.FsProductModel3d
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MapTemplate map[int64]gmodel.FsProductTemplateV2
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MapSizePrice map[string]gmodel.FsProductPrice
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MapProduct map[int64]gmodel.FsProduct
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MapResourceMetadata map[string]interface{}
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}
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func (l *GetCartsLogic) GetRelationInfo(req GetRelationInfoReq) error {
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lenCarts := len(req.Carts)
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templateIds := make([]int64, 0, lenCarts)
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modelIds := make([]int64, 0, lenCarts) //模型 + 配件
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sizeIds := make([]int64, 0, lenCarts)
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productIds := make([]int64, 0, lenCarts)
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for index := range req.Carts {
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templateIds = append(templateIds, *req.Carts[index].TemplateId)
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modelIds = append(modelIds, *req.Carts[index].ModelId, *req.Carts[index].FittingId)
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sizeIds = append(sizeIds, *req.Carts[index].SizeId)
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productIds = append(productIds, *req.Carts[index].ProductId)
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}
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//获取产品集合
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productList, err := l.svcCtx.AllModels.FsProduct.GetProductListByIds(l.ctx, productIds, "")
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if err != nil {
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logx.Error(err)
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return errors.New("failed to get product list")
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}
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resourceIds := make([]string, 0, len(productList))
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for _, v := range productList {
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req.MapProduct[v.Id] = v
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resourceIds = append(resourceIds, s3url_to_s3id.GetS3ResourceIdFormUrl(*v.Cover))
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}
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//根据resourceUrls找到对应的元数据
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resourceMetadataList, err := l.svcCtx.AllModels.FsResource.FindAllByResourceIds(l.ctx, resourceIds)
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if err != nil {
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logx.Error(err)
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return errors.New("failed to get resource list")
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}
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for _, v := range resourceMetadataList {
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var metadata interface{}
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if v.Metadata != nil {
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_ = json.Unmarshal(*v.Metadata, &metadata)
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}
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req.MapResourceMetadata[*v.ResourceUrl] = metadata
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}
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//获取尺寸列表
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sizeList, err := l.svcCtx.AllModels.FsProductSize.GetAllByIds(l.ctx, sizeIds, "")
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if err != nil {
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logx.Error(err)
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return errors.New("failed to get size list")
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}
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for _, v := range sizeList {
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req.MapSize[v.Id] = v
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}
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//获取模型和配件信息
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modelList, err := l.svcCtx.AllModels.FsProductModel3d.GetAllByIds(l.ctx, modelIds, "")
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if err != nil {
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logx.Error(err)
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return errors.New("failed to get model list")
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}
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for _, v := range modelList {
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req.MapModel[v.Id] = v
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}
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//获取模板列表
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templateList, err := l.svcCtx.AllModels.FsProductTemplateV2.FindAllByIds(l.ctx, templateIds)
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if err != nil {
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logx.Error(err)
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return errors.New("failed to get template list")
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}
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for _, v := range templateList {
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req.MapTemplate[v.Id] = v
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}
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//根据sizeid获取价格列表
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priceList, err := l.svcCtx.AllModels.FsProductPrice.GetPriceListByProductIdsSizeIds(l.ctx, productIds, sizeIds)
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if err != nil {
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logx.Error(err)
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return errors.New("failed to get cart`s product price list")
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}
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for _, v := range priceList {
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req.MapSizePrice[fmt.Sprintf("%d_%d", *v.ProductId, *v.SizeId)] = v
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}
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return nil
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}
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// 处理逻辑后 w,r 如:重定向, resp 必须重新处理
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// func (l *GetCartsLogic) AfterLogic(w http.ResponseWriter, r *http.Request, resp *basic.Response) {
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// // httpx.OkJsonCtx(r.Context(), w, resp)
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// }
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