/// <summary>
/// </summary>
/// <param name="restaurantDTO"></param>
/// <returns>name of the restaurant</returns>
/// ///
/// <exception cref="ArgumentException"></exception>
public async Task <string> AddRestaurant(RestaurantDTO restaurantDTO)
{
if (await _restaurantRepo.RestaurantExists(restaurantDTO.Name))
{
throw new ArgumentException("Restaurant exists");
}
await _restaurantRepo.AddRestaurantAsync(_mapper.Map <Restaurant>(restaurantDTO));
await _unitOfWork.SaveAsync();
return(restaurantDTO.Name);
}