func (this *orderManagerImpl) SubmitOrder(c cart.ICart, subject string,
couponCode string, useBalanceDiscount bool) (order.IOrder,
payment.IPaymentOrder, error) {
order, py, err := this.PrepareOrder(c, subject, couponCode)
if err != nil {
return order, py, err
}
orderNo, err := order.Submit()
tradeNo := orderNo
if err == nil {
cv := c.GetValue()
cv.PaymentOpt = enum.PaymentOnlinePay
pyUpdate := false
//todo: 设置配送门店
//err = order.SetShop(cv.ShopId)
//err = order.SetDeliver(cv.DeliverId)
// 设置支付方式
if err = py.SetPaymentSign(cv.PaymentOpt); err != nil {
return order, py, err
}
// 处理支付单
py.BindOrder(order.GetAggregateRootId(), tradeNo)
if _, err = py.Save(); err != nil {
err = errors.New("下单出错:" + err.Error())
//todo: 取消订单
//order.Cancel(err.Error())
domain.HandleError(err, "domain")
return order, py, err
}
// 使用余额支付
if useBalanceDiscount {
err = py.BalanceDiscount()
pyUpdate = true
}
// 如果已支付完成,则将订单设为支付完成
if v := py.GetValue(); v.FinalFee == 0 &&
v.State == payment.StateFinishPayment {
for _, sub := range order.GetSubOrders() {
sub.PaymentFinishByOnlineTrade()
}
}
// 更新支付单
if err == nil && pyUpdate {
_, err = py.Save()
}
}
return order, py, err
}
// 读取购物车数据,用于预生成订单
func (o *orderImpl) RequireCart(c cart.ICart) error {
if o.GetAggregateRootId() > 0 || o._cart != nil {
return order.ErrRequireCart
}
items := c.GetValue().Items
if len(items) == 0 {
return cart.ErrEmptyShoppingCart
}
// 绑定结算购物车
o._cart = c
// 将购物车的商品分类整理
o._vendorItemsMap = o.buildVendorItemMap(items)
// 更新订单的金额
o._vendorExpressMap = o.updateOrderFee(o._vendorItemsMap)
// 状态设为待支付
o._value.State = 1
return nil
}
// 将购物车转换为订单
func (this *orderManagerImpl) ParseToOrder(c cart.ICart) (order.IOrder,
member.IMember, error) {
var m member.IMember
err := this.checkCartForOrder(c)
if err != nil {
return nil, m, err
}
val := &order.Order{}
// 判断购买会员
buyerId := c.GetValue().BuyerId
if buyerId > 0 {
val.BuyerId = buyerId
m = this._memberRep.GetMember(val.BuyerId)
}
if m == nil {
return nil, m, member.ErrNoSuchMember
}
val.State = order.StatAwaitingPayment
o := this.CreateOrder(val)
err = o.RequireCart(c)
o.GetByVendor()
return o, m, err
}
// 应用购物车内商品的促销
func (o *orderImpl) applyCartPromotionOnSubmit(vo *order.Order,
cart cart.ICart) ([]promotion.IPromotion, int) {
var proms []promotion.IPromotion = make([]promotion.IPromotion, 0)
var prom promotion.IPromotion
var saveFee int
var totalSaveFee int
var intOrderFee = int(vo.FinalAmount)
var rightBack bool
for _, v := range cart.GetCartGoods() {
prom = nil
saveFee = 0
rightBack = false
// 判断商品的最省促销
for _, v1 := range v.GetPromotions() {
// 返现
if v1.Type() == promotion.TypeFlagCashBack {
vc := v1.GetRelationValue().(*promotion.ValueCashBack)
if vc.MinFee < intOrderFee {
if vc.BackFee > saveFee {
prom = v1
saveFee = vc.BackFee
rightBack = vc.BackType == promotion.BackUseForOrder // 是否立即抵扣
}
}
}
//todo: 其他促销
}
if prom != nil {
proms = append(proms, prom)
if rightBack {
totalSaveFee += saveFee
}
}
}
return proms, totalSaveFee
}
// 合并购物车，并返回新的购物车
func (this *cartImpl) Combine(c cart.ICart) cart.ICart {
if c.GetAggregateRootId() != this.GetAggregateRootId() {
for _, v := range c.GetValue().Items {
if item, err := this.AddItem(v.VendorId, v.ShopId,
v.SkuId, v.Quantity, v.Checked == 1); err == nil {
if v.Checked == 1 {
item.Checked = 1
}
}
}
c.Destroy() //合并后,需销毁购物车
}
this._snapMap = nil //clean
return this
}
// 获取购物车
func (this *shoppingService) getShoppingCart(buyerId int,
cartKey string) cart.ICart {
var c cart.ICart
if len(cartKey) > 0 {
c = this._cartRep.GetShoppingCartByKey(cartKey)
} else if buyerId > 0 {
c = this._cartRep.GetMemberCurrentCart(buyerId)
}
if c == nil {
c = this._cartRep.NewCart()
_, err := c.Save()
domain.HandleError(err, "service")
}
if c.GetValue().BuyerId <= 0 {
err := c.SetBuyer(buyerId)
domain.HandleError(err, "service")
}
return c
}
// 在下单前检查购物车
func (this *orderManagerImpl) checkCartForOrder(c cart.ICart) error {
if c == nil {
return cart.ErrEmptyShoppingCart
}
return c.Check()
}