go routine and removing cart

app/service/cartsService/cartsService.go

@@ -34,6 +34,18 @@ func (s *CartsService) CreateNewCart(user_id uint) (model.CustomerCart, error) {
 	return cart, nil
 }
 
+func (s *CartsService) RemoveCart(user_id uint, cart_id uint) error {
+	exists, err := s.repo.UserHasCart(user_id, cart_id)
+	if err != nil {
+		return err
+	}
+	if !exists {
+		return responseErrors.ErrUserHasNoSuchCart
+	}
+
+	return s.repo.RemoveCart(user_id, cart_id)
+}
+
 func (s *CartsService) UpdateCartName(user_id uint, cart_id uint, new_name string) error {
 	exists, err := s.repo.UserHasCart(user_id, cart_id)
 	if err != nil {

app/service/orderService/orderService.go

@@ -87,14 +87,24 @@ func (s *OrderService) PlaceNewOrder(user_id uint, cart_id uint, name string, co
 	if err != nil {
 		return err
 	}
+	// from this point onward we do not cancel this order.
 
-	// send email to admin
-	err = s.emailService.SendNewOrderPlacedNotification(user_id)
+	// if no error is returned, remove the cart. This should be smooth
+	err = s.cartsRepo.RemoveCart(user_id, cart_id)
 	if err != nil {
-		// Log error but don't fail placing order???
+		// Log error but don't fail placing order
 		_ = err
 	}
 
+	// send email to admin
+	go func(user_id uint) {
+		err := s.emailService.SendNewOrderPlacedNotification(user_id)
+		if err != nil {
+			// Log error but don't fail placing order
+			_ = err
+		}
+	}(user_id)
+
 	return nil
 }