lone-services/services/order/internal/logic/webCreateLogic.go

package logic

import (
	"context"
	"lone-services/pkg/modelbase"
	"lone-services/pkg/utils"
	product "lone-services/rpc/product/pb"
	"lone-services/services/order/internal/dao"
	"lone-services/services/order/internal/model"
	"lone-services/services/order/validator"
	"strconv"
	"strings"

	"lone-services/rpc/order/pb"
	"lone-services/services/order/internal/svc"

	"github.com/zeromicro/go-zero/core/logx"
)

type WebCreateLogic struct {
	ctx    context.Context
	svcCtx *svc.ServiceContext
	logx.Logger
	BaseLogic
}

func NewWebCreateLogic(ctx context.Context, svcCtx *svc.ServiceContext) *WebCreateLogic {
	return &WebCreateLogic{
		ctx:    ctx,
		svcCtx: svcCtx,
		Logger: logx.WithContext(ctx),
	}
}

func (l *WebCreateLogic) WebCreate(in *order.CreateOrderRequest) (*order.Response, error) {
	var v validator.OrderCreateValidator
	if fail := l.checkParams(in, &v); fail != nil {
		return fail, nil
	}
	adminInfo := utils.GetUserFromCtx(l.ctx)
	if adminInfo.ID < utils.NumberOne {
		return l.fail(utils.ErrorNoLoginInfo)
	}

	w := modelbase.Params{
		Eq: map[string]string{
			"id":        strconv.FormatInt(in.AddressId, utils.NumberTen),
			"type":      strconv.Itoa(int(in.Type)),
			"target_id": strconv.FormatInt(adminInfo.ID, utils.NumberTen),
		},
	}
	var address dao.Address
	err := model.AddressModel{}.Init().GetOne(w, &address)
	if err != nil {
		return l.fail(utils.Fail)
	}
	if address.Id < utils.NumberOne {
		return l.out(utils.Fail, "地址不存在")
	}

	data := dao.OrderCreate{
		Note:        in.Note,
		ExpiredTime: utils.GetAfterMinutes(utils.NumberThirty),
		Mobile:      address.Mobile,
		Address:     address.Address,
		Addressee:   address.Name,
		DistrictIds: address.DistrictIds,
	}

	ww := modelbase.Params{
		Eq: map[string]string{
			"type": strconv.Itoa(int(in.Type)),
		},
	}
	var orderSn string
	switch in.Type {
	case dao.CartTypeSale:
		data.SaleId = int(adminInfo.ID)
		data.SaleName = adminInfo.Name
		data.CreateType = dao.OrderTypeSale
		data.Type = dao.OrderTypeSale
		ww.Eq["sale_id"] = strconv.FormatInt(adminInfo.ID, utils.NumberTen)
		orderSn = svc.GetOrderSn(strconv.Itoa(dao.OrderTypeSale), adminInfo.ID)
	case dao.CartTypeUser:
		data.UserId = int(adminInfo.ID)
		data.UserName = adminInfo.Name
		data.CreateType = dao.OrderTypePersonal
		data.Type = dao.OrderTypePersonal
		ww.Eq["user_id"] = strconv.FormatInt(adminInfo.ID, utils.NumberTen)
		orderSn = svc.GetOrderSn(strconv.Itoa(dao.OrderTypePersonal), adminInfo.ID)
	case dao.CartTypeStore:
		data.StoreId = int(adminInfo.ID)
		data.StoreName = adminInfo.Name
		data.SaleId = int(adminInfo.SaleId)
		data.GroupId = int(adminInfo.GroupId)
		data.SaleMobile = adminInfo.SaleMobile
		data.SaleProvince = int(adminInfo.SaleProvince)
		data.CreateType = dao.OrderTypeStore
		data.Type = dao.OrderTypeStore
		ww.Eq["store_id"] = strconv.FormatInt(adminInfo.ID, utils.NumberTen)
		orderSn = svc.GetOrderSn(strconv.Itoa(dao.OrderTypeStore), adminInfo.ID)
	}
	data.OrderSn = orderSn

	var cart dao.Cart

	err = model.CartModel{}.Init().GetOne(ww, &cart)
	l.Logger.Error(cart)
	if err != nil {
		return l.fail(utils.Fail)
	}
	if cart.Id < utils.NumberOne {
		return l.out(utils.Fail, "购买信息不存在")
	}

	ids, pErr := svc.GetCartInfo(cart.Content)
	if pErr != utils.Ok {
		return l.fail(utils.Fail)
	}
	products, pErr := svc.GetCartData(l.svcCtx.ProductSvcName, ids)
	if pErr != utils.Ok {
		return l.fail(utils.Fail)
	}
	keys := make([]string, utils.NumberZero, len(products.Items))
	var totalPrice float64
	errData := make(map[int64]int64)
	productItems := []dao.OrderProductCreate{}

	NumItems := make([]*product.NumberItem, utils.NumberZero)
	for _, item := range products.Items {
		if buyNum, ok := ids[item.Id]; ok {
			if buyNum > int64(item.Number) {
				errData[item.Id] = int64(item.Number)
				return l.out(utils.Fail,
					item.Name+"购买数量超出库存,目前可以够买:"+strconv.Itoa(int(item.Number)))
			} else {
				numItem := &product.NumberItem{Id: item.Id, Number: uint32(buyNum)}
				NumItems = append(NumItems, numItem)
				keys = append(keys, strconv.Itoa(int(item.Id)))
				totalPrice += item.Price * float64(buyNum)
				productItems = append(productItems, dao.OrderProductCreate{
					OrderSn:     data.OrderSn,
					ProductId:   int(item.Id),
					ProductName: item.Name,
					Price:       item.Price,
					Number:      int(buyNum),
				})
			}
		}
	}
	if len(keys) < utils.NumberOne {
		return l.out(utils.Fail, "购买信息不存在")
	}
	data.ProductIds = strings.Join(keys, utils.DecollatorComma)
	data.TotalPrice = totalPrice
	mobileObj := model.OrderModel{}.Init()

	mobileObj.Begin()
	err = mobileObj.Create(&data)
	if err != nil {
		mobileObj.Rollback()
		return l.fail(utils.Fail)
	}

	for _, item := range productItems {
		err = model.OrderProductModel{}.Init().Create(&item)
		if err != nil {
			mobileObj.Rollback()
			return l.fail(utils.Fail)
		}
	}

	_, err = model.CartModel{}.Init().Del(ww, &cart)
	if err != nil {
		mobileObj.Rollback()
		return l.fail(utils.Fail)
	}

	cli, err := svc.GetRpcClient(l.svcCtx.ProductSvcName)
	if err != nil {
		mobileObj.Rollback()
		return l.fail(utils.Fail)
	}

	productClient := product.NewProductClient(cli.Conn())
	_, err = productClient.NumberItems(l.ctx, &product.NumberItemsReq{Type: utils.NumberOne, Items: NumItems})
	if err != nil {
		mobileObj.Rollback()
		logx.Errorf("get products err: %v", err)
		return l.out(utils.Fail, "产品库存不足")
	}

	mobileObj.Commit()

	return l.ok(utils.NumberOne)
}