decimal CalculateSinglePromoted(string[] promotionTypes, ReceiptItem receiptItem)
{
if (promotionTypes.Length == 0)
{
return 0M;
}
decimal promoted = receiptItem.Promoted;
foreach (string type in promotionTypes)
{
switch (type)
{
case "BUY_TWO_GET_ONE":
ICalculatePromotion calculate = new BuyTwoGetOne();
promoted += calculate.CalculatePromoted(receiptItem);
break;;
}
}
return promoted;
}
public decimal CalculatePromoted(ReceiptItem receiptItem)
{
int freeNumber = receiptItem.Amount/3;
return freeNumber* receiptItem.Product.Price;
}
