public void AcceptBill(Bill bill, User debitor, User user, string billUrl, string settleBillUrl)
{
Require.NotNull(bill, "bill");
Require.NotNull(debitor, "debitor");
if (!bill.IsSettled)
{
BillAcceptState?billAcceptState = bill.GetDebitorState(debitor);
if (billAcceptState != null && billAcceptState != BillAcceptState.Accepted)
{
bill.AcceptByDebitor(debitor, new EntityChangedDto(user, DateTime.Now));
if (bill.HasEveryoneAccepted)
{
NotificationService.SendBillAcceptedNotification(bill, billUrl, settleBillUrl);
}
}
}
else
{
throw new InvalidOperationException("Die Rechnung kann nicht akzeptiert werden da diese bereits abgerechnet wurde.");
}
}
