public void Handle(InvoiceBalanceUpdated notification)
{
var invoice = _Mediator.Send(new GetInvoice {
Id = notification.InvoiceId
});
notification.Apply(invoice);
const string query = @"
UPDATE Accounting.Invoice
SET Balance = @Balance
WHERE Id = @Id";
_UnitOfWork.Execute(query, invoice);
// This assumes a liability account, I'm considering invoices to
// be liabilities for the company that receives an invoice
var ledgerEntry = new GeneralLedgerEntry
{
CreditAmount = notification.Amount > 0 ? notification.Amount : 0,
DebitAmount = notification.Amount < 0 ? notification.Amount : 0,
EntryDate = notification.EventDate,
Id = _GuidGenerator.Generate(),
LineItemId = notification.LineItemId,
CreatedOn = notification.EventDate,
CreatedById = notification.UpdatedById
};
const string query2 = @"
INSERT INTO Accounting.GeneralLedger (Id, CreditAmount, DebitAmount, LineItemId, CreatedOn, CreatedById)
VALUES (@Id, @CreditAmount, @DebitAmount, @LineItemId, @CreatedOn, @CreatedById)";
_UnitOfWork.Execute(query2, ledgerEntry);
}
public EventHistoryItem Visit(InvoiceBalanceUpdated evt)
{
evt.Apply(_Invoice);
var historyItem = CreateEventHistoryItem(evt);
historyItem.Message = $"New balance of ${_Invoice.Balance}";
return(historyItem);
}