public async Task <int> Checkout(string customerId, RegistrationViewModel input)
{
if (string.IsNullOrWhiteSpace(customerId))
{
throw new ArgumentNullException(nameof(customerId));
}
if (input == null)
{
throw new ArgumentNullException(nameof(input));
}
CustomerBasket basket = _repository.GetBasket(customerId);
var order
= new Order(basket.Items.Select(i => new OrderItem(i)).ToList()
, customerId, input.Name, input.Email, input.Phone
, input.Address, input.AdditionalAddress, input.District
, input.City, input.State, input.ZipCode);
var newOrder = await _orderingServices.CreateOrUpdateAsync(order);
_repository.DeleteBasket(customerId);
return(newOrder.Id);
}