full/module/ec/order/internal/logic/cart/create.go

package cart

import (
	"context"
	"errors"
	"time"

	"bsm/full/module/ec/order/internal/models"
	pb "bsm/full/module/ec/order/pb"
	"git.apinb.com/bsm-sdk/core/errcode"
	"git.apinb.com/bsm-sdk/core/printer"
	"git.apinb.com/bsm-sdk/core/service"
	"git.apinb.com/bsm-sdk/core/utils"
	"gorm.io/gorm"
)

// 将商品增加至购物车
func Create(ctx context.Context, in *pb.CartAddRequest) (reply *pb.OrderStatusReply, err error) {
	auth, err := service.ParseMetaCtx(ctx, nil)
	if err != nil {
		return nil, err
	}
	var cart *models.OrderCart

	err = models.DBService.Where("cart_identity=? and product_identity=? and spec_id = ? ", in.CartIdentity, in.ProductIdentity, in.SpecId).First(&cart).Error
	if err != nil {
		if !errors.Is(err, gorm.ErrRecordNotFound) {
			printer.Error(err.Error())
			return nil, errcode.ErrDB
		}
	}

	var data = models.OrderCart{
		CartIdentity:    in.CartIdentity,
		ProductID:       in.ProductId,
		ProductArgs:     in.ProductArgs,
		Number:          in.Number,
		ProductIdentity: in.ProductIdentity,
		SpecID:          in.SpecId,
	}
	data.PassportIdentity = auth.Identity
	data.Identity = utils.UUID()
	if cart.ID == 0 {
		err = models.DBService.Create(&data).Error
	} else {
		data.Number += cart.Number
		err = models.DBService.Where("cart_identity=? and product_identity=? and spec_id = ? ", in.CartIdentity, in.ProductIdentity, in.SpecId).Updates(&data).Error
	}

	if err != nil {
		printer.Error(err.Error())
		return nil, errcode.ErrDB
	}

	return &pb.OrderStatusReply{
		Code:     0,
		Identity: data.Identity,
		Message:  "OK",
		Timeseq:  time.Now().UnixNano(),
	}, nil

}