public bool AddToFavourite(UserFavourites favourite)
{
var isFavourites = _weatherRepository.IsCityExists(favourite);
if (!isFavourites)
{
return(_weatherRepository.AddToFavourite(favourite));
}
else
{
throw new UserAlreadyExistsException($"This city {favourite.City} has already added to this user {favourite.UserId}");
}
}