/// <summary>
/// Get single item non-overlapped discount result.
/// </summary>
/// <param name="itemGroupIndex">Item group index.</param>
/// <param name="price">Item price.</param>
/// <param name="quantity">Item quantity.</param>
/// <returns>Single item non-overlapped discount result.</returns>
protected internal override SingleItemNonOverlappedDiscountResult GetSingleItemNonOverlappedDiscountResult(
int itemGroupIndex,
decimal price,
decimal quantity)
{
SingleItemNonOverlappedDiscountResult result = SingleItemNonOverlappedDiscountResult.NotApplicable;
HashSet <decimal> discountLineNumberSet = null;
if (this.ItemGroupIndexToDiscountLineNumberSetMap.TryGetValue(itemGroupIndex, out discountLineNumberSet))
{
if (discountLineNumberSet.Count == 1)
{
RetailDiscountLine discountLineDefinition = this.DiscountLines[discountLineNumberSet.First()];
result = new SingleItemNonOverlappedDiscountResult(
(DiscountOfferMethod)discountLineDefinition.DiscountMethod,
discountLineDefinition.DiscountAmount,
discountLineDefinition.DiscountPercent,
discountLineDefinition.OfferPrice,
GetUnitDiscountAmount(discountLineDefinition, price),
this.ConcurrencyMode);
}
}
return(result);
}
/// <summary>
/// Compare two compounded results by application sequence.
/// </summary>
/// <param name="x">First single item non-overlapped discount result.</param>
/// <param name="y">Second single item non-overlapped discount result.</param>
/// <returns>Comparison result.</returns>
public static int CompareCompoundedApplicationSequence(SingleItemNonOverlappedDiscountResult x, SingleItemNonOverlappedDiscountResult y)
{
int result = 0;
if (x != null && y != null)
{
if (x.IsApplicable && x.CanCompound && y.IsApplicable && y.CanCompound)
{
// The sort would put OfferPrice first, then DiscountAmount, and finally Percentage
result = Math.Sign(((int)y.DiscountMethod) - ((int)x.DiscountMethod));
if (result == 0)
{
switch (x.DiscountMethod)
{
case DiscountOfferMethod.OfferPrice:
result = x.OfferPrice.CompareTo(y.OfferPrice);
break;
case DiscountOfferMethod.DiscountAmount:
result = y.DiscountAmount.CompareTo(x.DiscountAmount);
break;
case DiscountOfferMethod.DiscountPercent:
result = y.DiscountPercentage.CompareTo(x.DiscountPercentage);
break;
}
}
}
}
else if (y == null)
{
result = 1;
}
else
{
result = -1;
}
return(result);
}
