+CanSwitch2SelfDeliver，美团预定单是不能转自送的

减小转自送失败尝试时间间隙至3秒（以免出现不能取消三方运单的情况）

business/partner/delivery/mtps/waybill.go

@@ -36,8 +36,10 @@ type DeliveryHandler struct {
 }
 
 func init() {
-	curDeliveryHandler = new(DeliveryHandler)
-	partner.RegisterDeliveryPlatform(curDeliveryHandler, true)
+	if api.MtpsAPI != nil {
+		curDeliveryHandler = new(DeliveryHandler)
+		partner.RegisterDeliveryPlatform(curDeliveryHandler, true)
+	}
 }
 
 func (c *DeliveryHandler) GetVendorID() int {

business/partner/partner.go

@@ -190,6 +190,10 @@ func (p *BasePurchasePlatform) GetStatusActionTimeout(order *model.GoodsOrder, s
 	return params
 }
 
+func (c *BasePurchasePlatform) CanSwitch2SelfDeliver(order *model.GoodsOrder) (isCan bool, err error) {
+	return true, nil
+}
+
 func init() {
 	PurchasePlatformHandlers = make(map[int]IPurchasePlatformHandler)
 	PurchaseOrderHandlers = make(map[int]IPurchasePlatformOrderHandler)

business/partner/partner_order.go

@@ -22,6 +22,8 @@ type IPurchasePlatformOrderHandler interface {
 	CallCourier(ctx *jxcontext.Context, order *model.GoodsOrder) (err error)         // 取货失败后再次招唤平台配送
 	ConfirmReceiveGoods(ctx *jxcontext.Context, order *model.GoodsOrder) (err error) // 投递失败后确认收到退货
 
+	// 是否可能转商家自送
+	CanSwitch2SelfDeliver(order *model.GoodsOrder) (isCan bool, err error)
 	// 将订单从购物平台配送转为自送
 	Swtich2SelfDeliver(order *model.GoodsOrder, userName string) (err error)
 

business/partner/purchase/mtwm/order.go

@@ -468,6 +468,11 @@ func (p *PurchaseHandler) ConfirmReceiveGoods(ctx *jxcontext.Context, order *mod
 	return err
 }
 
+// 美团预定单不能转商家自送
+func (c *PurchaseHandler) CanSwitch2SelfDeliver(order *model.GoodsOrder) (isCan bool, err error) {
+	return order.BusinessType != model.BusinessTypeDingshida, nil
+}
+
 func (c *PurchaseHandler) Swtich2SelfDeliver(order *model.GoodsOrder, userName string) (err error) {
 	globals.SugarLogger.Debugf("mtwm Swtich2SelfDeliver orderID:%s", order.VendorOrderID)
 	if globals.EnableMtwmStoreWrite {