/// <summary>
/// Does the actual work capturing a payment
/// </summary>
/// <param name="invoice">The <see cref="IInvoice"/></param>
/// <param name="payment">The previously Authorize payment to be captured</param>
/// <param name="amount">The amount to capture</param>
/// <param name="args">Any arguments required to process the payment.</param>
/// <returns>The <see cref="IPaymentResult"/></returns>
protected override IPaymentResult PerformCapturePayment(IInvoice invoice, IPayment payment, decimal amount, ProcessorArgumentCollection args)
{
// We need to determine if the entire amount authorized has been collected before marking
// the payment collected.
var appliedPayments = GatewayProviderService.GetAppliedPaymentsByPaymentKey(payment.Key);
var applied = appliedPayments.Sum(x => x.Amount);
payment.Collected = (amount + applied) == payment.Amount;
payment.Authorized = true;
GatewayProviderService.Save(payment);
GatewayProviderService.ApplyPaymentToInvoice(payment.Key, invoice.Key, AppliedPaymentType.Debit, "Purchase Order Payment", amount);
return(new PaymentResult(Attempt <IPayment> .Succeed(payment), invoice, CalculateTotalOwed(invoice).CompareTo(amount) <= 0));
}
