code ready, time for testing...

app/service/orderService/orderService.go

@@ -37,17 +37,17 @@ func (s *OrderService) Find(user *model.Customer, p find.Paging, filt *filters.F
 	return s.ordersRepo.Find(user.ID, p, filt)
 }
 
-func (s *OrderService) PlaceNewOrder(user_id uint, cart_id uint, country_id uint, address_info string) error {
+func (s *OrderService) PlaceNewOrder(user_id uint, cart_id uint, name string, country_id uint, address_info string) error {
 	_, err := s.addressesService.ValidateAddressJson(address_info, country_id)
 	if err != nil {
 		return err
 	}
 
-	amt, err := s.cartsRepo.UserHasCart(user_id, cart_id)
+	exists, err := s.cartsRepo.UserHasCart(user_id, cart_id)
 	if err != nil {
 		return err
 	}
-	if amt <= 0 {
+	if !exists {
 		return responseErrors.ErrUserHasNoSuchCart
 	}
 
@@ -59,14 +59,45 @@ func (s *OrderService) PlaceNewOrder(user_id uint, cart_id uint, country_id uint
 		return responseErrors.ErrEmptyCart
 	}
 
+	if name == "" && cart.Name != nil {
+		name = *cart.Name
+	}
+
 	// all checks passed
-	return s.ordersRepo.PlaceNewOrder(user_id, cart_id, country_id, address_info)
+	return s.ordersRepo.PlaceNewOrder(cart, name, country_id, address_info)
 }
 
 func (s *OrderService) ChangeOrderAddress(user *model.Customer, order_id uint, country_id uint, address_info string) error {
-	return nil
+	_, err := s.addressesService.ValidateAddressJson(address_info, country_id)
+	if err != nil {
+		return err
+	}
+
+	if !user.HasPermission(perms.ModifyAllOrders) {
+		exists, err := s.ordersRepo.UserHasOrder(user.ID, order_id)
+		if err != nil {
+			return err
+		}
+
+		if !exists {
+			return responseErrors.ErrUserHasNoSuchOrder
+		}
+	}
+
+	return s.ordersRepo.ChangeOrderAddress(order_id, country_id, address_info)
 }
 
 func (s *OrderService) ChangeOrderStatus(user *model.Customer, order_id uint, status string) error {
-	return nil
+	if !user.HasPermission(perms.ModifyAllOrders) {
+		exists, err := s.ordersRepo.UserHasOrder(user.ID, order_id)
+		if err != nil {
+			return err
+		}
+
+		if !exists {
+			return responseErrors.ErrUserHasNoSuchOrder
+		}
+	}
+
+	return s.ordersRepo.ChangeOrderStatus(order_id, status)
 }