// 生成订单
func (this *Shopping) BuildOrder(memberId int, couponCode string) (shopping.IOrder, shopping.ICart, error) {
order, m, cart, err := this.ParseShoppingCart(memberId)
if err != nil {
return order, cart, err
}
if len(couponCode) != 0 {
var coupon promotion.ICoupon
var result bool
var val = order.GetValue()
coupon, err = this._promRep.GetCouponByCode(
this._partnerId, couponCode)
// 如果优惠券不存在
if err != nil || coupon == nil {
log.PrintErr(err)
return order, cart, errors.New("优惠券无效")
}
result, err = coupon.CanUse(m, val.Fee)
if result {
if coupon.CanTake() {
_, err = coupon.GetTake(memberId)
//如果未占用，则占用
if err != nil {
err = coupon.Take(memberId)
}
} else {
_, err = coupon.GetBind(memberId)
}
if err != nil {
log.PrintErr(err)
return order, cart, errors.New("优惠券无效")
}
order.ApplyCoupon(coupon) //应用优惠券
}
}
return order, cart, err
}
