public async Task <IActionResult> discoverLocation(int locationId, int userId)
        {
            if (userId != int.Parse(User.FindFirst(ClaimTypes.NameIdentifier).Value))
            {
                return(Unauthorized());
            }

            var user = await _repo.GetUser(userId);

            if (user == null)
            {
                return(NotFound());
            }

            var location = await _repo.GetLocation(locationId);

            if (location == null)
            {
                return(NotFound());
            }

            if (await _repo.UserLocationAlreadyExist(locationId, userId))
            {
                return(BadRequest("You have already discovered this location."));
            }

            var mobileUserLocation = new MobileUserLocation
            {
                LocationId   = locationId,
                MobileUserId = userId
            };

            _repo.Add(mobileUserLocation);

            if (await _repo.SaveAll())
            {
                return(Ok());
            }

            return(BadRequest("Failed to add location to user"));
        }