public AttachReceipt ToAttachReceipt()
{
MemoryStream s = new MemoryStream();
File.CopyTo(s);
s.Position = 0;
AttachReceipt returnValue = new AttachReceipt(Guid.NewGuid(), InvoiceId, UserID, s.ToArray());
returnValue.FileName = File.FileName;
returnValue.Amount = this.Amount;
return(returnValue);
}
public async Task <CommandResult> Handle(AttachReceipt request, CancellationToken cancellationToken)
{
if (!context.Invoices.Any(_ => _.ID == request.InvoiceId && _.UserId == request.UserID))
{
return(new CommandResult(false, Guid.Empty, "ERR-1003", $"No invoice found with the given id {request.InvoiceId} for user {request.UserID}"));
}
if (context.Receipts.Any(_ => _.FileName == request.FileName && _.UserId == request.UserID))
{
return(new CommandResult(false, Guid.Empty, "ERR-1003", "File already exists for this user"));
}
context.EventEntries.Add(new EventEntry()
{
ID = Guid.NewGuid(), Payload = JsonSerializer.Serialize(request)
});
await this.azureBlobRepo.Store("receipts", request.UserID, request.FileName, new MemoryStream(request.Content));
using (var transaction = this.context.Database.BeginTransaction())
{
try
{
Receipt r = new Receipt();
r.ReferenceBlobAdress = string.Concat(request.UserID, "/", request.FileName);
r.InvoiceID = request.InvoiceId;
r.UserId = request.UserID;
r.Amount = request.Amount;
r.FileName = request.FileName;
await context.Receipts.AddAsync(r, cancellationToken);
await context.SaveChangesAsync(cancellationToken);
await transaction.CommitAsync(cancellationToken);
// Publish Create Event to subscriber.
await this.mediator.Publish(new ReceiptCreatedEvent(r.ID, r.ReferenceBlobAdress), cancellationToken);
return(new CommandResult(true, r.ID));
}
catch (Exception e)
{
await transaction.RollbackAsync(cancellationToken);
return(new CommandResult(true, Guid.Empty, "ERR-2000", e.Message));
}
}
}