public DeliveryViewModel ChangeRecepient(int deliveryId, string newRecepient)
{
var delivery = _deliveryRepository.GetById(deliveryId);
if (delivery == null)
{
throw new InvalidOperationException("Delivery doesn't exist");
}
if (newRecepient == null)
{
throw new ArgumentNullException(nameof(newRecepient), "Recepient is null");
}
var user = GetUser(newRecepient);
if (user == null)
{
throw new InvalidOperationException("User doesn't exist");
}
return(_deliveryRepository.ChangeRecepient(delivery, newRecepient).ToDeliveryViewModel());
}
