private void CalculateBasket()
{
//Reset Message Variables
Failed_Voucher = null;
Missing_Spend = null;
//First part of calculation is to sum all of the items and subtract general gift vouchers
decimal runningTotal = Basket_Items.Where(o => o.Product is Product_Stock_Item).Sum(o => o.Product.Price);
var originalTotal = runningTotal;
Vouchers.Where <IVoucher>(o => o is GiftVoucher).ToList().ForEach(o => o.Calculate_Voucher_Discounts(ref runningTotal, this.Basket_Items));
//Apply Offer Vouchers Discount
if (this.Offer_Voucher != null)
{
Failed_Voucher = this.Offer_Voucher.Calculate_Voucher_Discounts(ref runningTotal, this.Basket_Items);
}
//Apply Offer Vouchers
//apply gift vouchers at the end
runningTotal = runningTotal + Basket_Items.Where(o => o.Product is Product_Voucher).Sum(o => o.Product.Price);
//Deal with any negative values
if (runningTotal < 0)
{
runningTotal = 0;
}
Total = runningTotal;
}
public bool Add_To_Basket(IProduct product, decimal Quantity)
{
Basket_Items.Add(new Basket_Items.Basket_Item(product, Quantity));
return(true);
}
