public byte[] Process(ActionContext context)
{
var data = context.IncomingMessage;
var sri = SaleRequestInfoParser.Parse(data.RawBytes);
var saleOperation = new SaleOperation(
machineId: sri.MachineId,
clientCardId: sri.ClientCardId,
itemsCount: sri.ItemsCount,
itemsId: sri.ItemsId,
price: sri.Price
);
var saleResult = _saleService.Sale(saleOperation);
var card = _clientCardRepository.Get(sri.ClientCardId);
return(BuildResponse(saleResult, card));
}
//TODO: Review floating points comparisons
public OperationResult Sale(SaleOperation sale)
{
var decimalPrice = new decimal(sale.Price);
var machine = _machineRepository.Get(sale.MachineId);
var client = _clientCardRepository.Get(sale.ClientCardId);
var products = _productRepository.GetMany(sale.ItemsId.Select(_ => (int)_)).ToList();
var errors = new List <OperationError>();
if (client == null)
{
errors.Add(OperationErrorFactory.FromWellKnowErrors(WellKnowErrors.ClientNotFound));
}
if (client != null && client.Credit < decimalPrice)
{
errors.Add(OperationErrorFactory.FromWellKnowErrors(WellKnowErrors.ClientWithNoEnoughCredit));
}
if (products.Count != sale.ItemsCount)
{
errors.Add(OperationErrorFactory.FromWellKnowErrors(WellKnowErrors.InvalidProduct));
}
if (products.Sum(_ => _.Price) != decimalPrice)
{
errors.Add(OperationErrorFactory.FromWellKnowErrors(WellKnowErrors.InvalidPrice));
}
if (products.Count != sale.ItemsCount)
{
errors.Add(OperationErrorFactory.FromWellKnowErrors(WellKnowErrors.InvalidProduct));
}
if (errors.Any())
{
return(OperationResult.Failed(errors.ToArray()));
}
DoTransaction(client, machine, products, decimalPrice);
return(OperationResult.Success);
}