public async Task <OrderCreationResult> CreateOrderAsync(Customer customer,
int numberOfOrderedCups)
{
if (customer == null)
{
throw new ArgumentNullException(nameof(customer),
$"{nameof(customer)} must not be null");
}
if (numberOfOrderedCups < 1)
{
throw new ArgumentOutOfRangeException(nameof(numberOfOrderedCups),
$"{nameof(numberOfOrderedCups)} must be greater than zero!");
}
OrderCreationResult result;
var numberOfCupsInStock = await _coffeeCupRepository.GetCoffeeCupsInStockCountAsync();
var areEnoughCupsInStock = numberOfOrderedCups <= numberOfCupsInStock;
if (areEnoughCupsInStock)
{
Order createdOrder = await CreateOrderInternalAsync(customer, numberOfOrderedCups);
result = new OrderCreationResult
{
ResultCode = OrderCreationResultCode.Success,
CreatedOrder = createdOrder,
RemainingCupsInStock = numberOfCupsInStock - numberOfOrderedCups
};
}
else
{
result = new OrderCreationResult
{
ResultCode = OrderCreationResultCode.StockExceeded,
RemainingCupsInStock = numberOfCupsInStock,
};
}
return(result);
}
public async Task <OrderCreationResult> CreateOrderAsync(Customer customer,
int numberOfOrderedCups)
{
// TODO: Throw ArgumentOutOfRangeException if number of ordered cups is less than 1
OrderCreationResult result;
// TODO: Return StockExceeded result code if not enough cups in stock
Order createdOrder = await CreateOrderInternalAsync(customer, numberOfOrderedCups);
result = new OrderCreationResult
{
ResultCode = OrderCreationResultCode.Success,
CreatedOrder = null, // TODO: Store created order in CreatedOrder property
RemainingCupsInStock = 0 // TODO: Store remaining cups in stock in OrderCreationResult
};
return(result);
}
