/// <summary>
/// Scans in a new item for the order.
/// </summary>
/// <param name="item">The item to add to the order.</param>
public void Scan(Item item)
{
if (item != null && _kataItemsDatabaseAccess.CheckItemExists(item.Sku))
{
if (_order.CheckForItemInOrder(item))
{
_order.IncrementItemQty(item);
}
else
{
_order.CreateOrderLineForItem(item);
}
int currentlyScannedItemQty = _order.GetItemsOrderLine(item).Qty;
decimal totalPrice = CalculateTotalPrice(item, currentlyScannedItemQty);
decimal discountPrice = 0m;
if (_kataItemsDatabaseAccess.CheckItemEligableForDiscount(item.Sku))
{
discountPrice = CalculateDiscountPrice(item, currentlyScannedItemQty);
}
else
{
discountPrice = CalculateTotalPrice(item, currentlyScannedItemQty);
}
_order.SetItemTotalPrice(item, totalPrice);
_order.SetItemDiscountPrice(item, discountPrice);
}
else
{
throw new Exception("Item does not exist.");
}
}
