public decimal GetPrice(CheckoutItem checkoutItem)
{
var specialOffer = this.specialOfferRepository.GetBySku(checkoutItem.Sku);
if (specialOffer == null || specialOffer.Quantity > checkoutItem.Quantity)
{
return(checkoutItem.Price * checkoutItem.Quantity);
}
else
{
int offerQuantity = checkoutItem.Quantity / specialOffer.Quantity;
int remainder = checkoutItem.Quantity % specialOffer.Quantity;
return((specialOffer.OfferPrice * offerQuantity) + (remainder * checkoutItem.Price));
}
}
/// <summary>
/// Scan an item into the Checkout
/// </summary>
/// <param name="item"></param>
public void Scan(Item item)
{
//validation
if (item == null)
{
throw new ArgumentNullException(nameof(item));
}
//lookup the item in the list
CheckoutItem checkoutItem = this.checkoutItems.FirstOrDefault(p => p.Sku == item.Sku);
if (checkoutItem == null)
{
//no item with sku was found so create one and add to list (without quantity initially)
checkoutItem = new CheckoutItem {
Sku = item.Sku, Price = item.ItemPrice
};
this.checkoutItems.Add(checkoutItem);
}
//increment quantity
checkoutItem.Quantity++;
}
