public IActionResult AddNotification([FromBody] NotificationForCreationDto notificationFromBody)
        {
            if (!_userService.CheckIfUserExists(notificationFromBody.TargetUserId) ||
                !_offerService.CheckIfOfferExists(notificationFromBody.OfferId))
            {
                return(NotFound());
            }

            if (notificationFromBody.Type == NotificationType.RentRequest)
            {
                if (!_offerService.CheckIfOfferIsActive(notificationFromBody.OfferId))
                {
                    return(BadRequest("Oferta nieaktywna."));
                }
                else if (_notificationService.CheckIfUserAlreadySendRentRequest(
                             notificationFromBody.TargetUserId, notificationFromBody.OfferId))
                {
                    return(BadRequest("Proœba o wypo¿yczenie dla tej oferty ju¿ zosta³a przes³ana."));
                }
                else if (!_rentService.CheckIfUserHasEnoughPoints(notificationFromBody.TargetUserId))
                {
                    return(BadRequest("Niewystarczaj¹ca iloœæ punktów na zrealizowanie wypo¿yczenia."));
                }
            }

            var offerToReturn = _notificationService.AddNotification(notificationFromBody);

            return(Ok(offerToReturn));
        }