public void RemoveOrderLine(OrderLine orderLine)
{
var itemToRemove = OrderLines.Single(o => o.Id == orderLine.Id);
DefaultPrice -= orderLine.TotalDefaultCost;
ActualPrice -= orderLine.TotalActualCost;
OrderLines.Remove(itemToRemove);
}
public void RefundOrderLine(Guid orderLineId, int quantity, decimal amount)
{
if (amount <= decimal.Zero)
{
throw new InvalidRefundAmountException(amount);
}
var orderLine = OrderLines.Single(x => x.Id == orderLineId);
orderLine.Refund(quantity, amount);
RefundAmount += amount;
}
public void AddDiscount(Guid orderLineId, decimal expectedDiscountAmount)
{
var orderLine = OrderLines.Single(x => x.Id == orderLineId);
orderLine.AddDiscount(expectedDiscountAmount);
TotalDiscount += expectedDiscountAmount;
ActualTotalPrice -= expectedDiscountAmount;
if (ActualTotalPrice < decimal.Zero)
{
throw new DiscountAmountOverflowException();
}
}
