public async Task <IIdentifierResult> HandleAsync(ICreateSale command, ICorrelationContext context)
{
await Task.WhenAll(
_agVerifier.AssertExists(command.AccountingGroupId),
_userVerifier.AssertExists(command.UserId),
_posVerifier.AssertExists(command.PointOfSaleId),
_amVerifier.AssertExists(command.AuthenticationMeansId),
_productVerifier.AssertExists(command.ProductId),
_offerVerifier.AssertExists(command.OfferId)
);
var sale = new Domain.Sale(command.Id, command.Cost, command.Quantity, command.AccountingGroupId, command.UserId, command.AuthenticationMeansId, command.PointOfSaleId, command.ProductId, command.OfferId);
var initialSaleStateChange = new Domain.SaleStateChange(Guid.NewGuid(), "Created", default(SaleState), command.PointOfSaleId, null);
sale.AddStateChange(initialSaleStateChange);
await _salesRepository.AddAsync(sale);
try
{
await _salesRepository.SaveChanges();
}
catch (EntityAlreadyExistsException)
{
throw new BaristaException("sale_already_exists", $"A sale with the ID '{command.Id}' already exists.");
}
await _busPublisher.Publish(new SaleCreated(sale));
await _busPublisher.Publish(new SaleStateChangeCreated(initialSaleStateChange.Id, sale.Id,
initialSaleStateChange.Created, initialSaleStateChange.Reason, initialSaleStateChange.State.ToString(),
initialSaleStateChange.CausedByPointOfSaleId, initialSaleStateChange.CausedByUserId));
return(new IdentifierResult(sale.Id));
}
public async Task <IIdentifierResult> HandleAsync(ICreateSaleStateChange command, ICorrelationContext context)
{
var sale = await _salesRepository.GetAsync(command.ParentSaleId);
if (sale is null)
{
throw new BaristaException("sale_not_found", $"Sale with ID '{command.ParentSaleId}' was not found");
}
if (command.CausedByUserId != null)
{
await _userVerifier.AssertExists(command.CausedByUserId.Value);
}
if (command.CausedByPointOfSaleId != null)
{
await _posVerifier.AssertExists(command.CausedByPointOfSaleId.Value);
}
var saleStateChange = new Domain.SaleStateChange(command.Id, command.Reason, Enum.Parse <SaleState>(command.State), command.CausedByPointOfSaleId, command.CausedByUserId);
sale.AddStateChange(saleStateChange);
await _salesRepository.UpdateAsync(sale);
await _salesRepository.SaveChanges();
await _busPublisher.Publish(new SaleStateChangeCreated(saleStateChange.Id, sale.Id, saleStateChange.Created,
saleStateChange.Reason, saleStateChange.State.ToString(), saleStateChange.CausedByPointOfSaleId,
saleStateChange.CausedByUserId));
return(new IdentifierResult(sale.Id));
}
