/// <summary>
/// Calculate the customer discount.
/// </summary>
/// <param name="pricingDataManager">Provides data access to the calculation.</param>
/// <param name="salesTransaction">The sales transaction.</param>
/// <param name="priceContext">Context for the pricing calculation.</param>
public void CalcCustomerDiscount(
IPricingDataAccessor pricingDataManager,
SalesTransaction salesTransaction,
PriceContext priceContext)
{
// Fetch all discount trade agreements if the data manager supports it
List <TradeAgreement> lineTradeAgreements = null;
List <TradeAgreement> multiLineTradeAgreements = null;
List <TradeAgreement> totalTradeAgreements = null;
HashSet <string> items = new HashSet <string>(salesTransaction.PriceCalculableSalesLines.Select(sl => sl.ItemId).Distinct(), StringComparer.OrdinalIgnoreCase);
IEnumerable <TradeAgreement> tradeAgreements = pricingDataManager.ReadDiscountTradeAgreements(items, priceContext.CustomerAccount, priceContext.ActiveDate, priceContext.ActiveDate, priceContext.CurrencyCode, QueryResultSettings.AllRecords) as IEnumerable <TradeAgreement>;
lineTradeAgreements = new List <TradeAgreement>();
multiLineTradeAgreements = new List <TradeAgreement>();
totalTradeAgreements = new List <TradeAgreement>();
foreach (var agreement in tradeAgreements)
{
if (agreement.Relation == PriceDiscountType.LineDiscountSales)
{
lineTradeAgreements.Add(agreement);
}
else if (agreement.Relation == PriceDiscountType.MultilineDiscountSales)
{
multiLineTradeAgreements.Add(agreement);
}
else if (agreement.Relation == PriceDiscountType.EndDiscountSales)
{
totalTradeAgreements.Add(agreement);
}
}
// Calculate line discount
var lineDiscountCalculator = new LineDiscountCalculator(this.DiscountParameters, priceContext);
salesTransaction = lineDiscountCalculator.CalcLineDiscount(lineTradeAgreements, salesTransaction);
// Calculate multiline discount
var multilineDiscountCalculator = new MultilineDiscountCalculator(this.DiscountParameters, priceContext);
salesTransaction = multilineDiscountCalculator.CalcMultiLineDiscount(multiLineTradeAgreements, salesTransaction);
// Calculate total discount
var totalDiscountCalculator = new TotalDiscountCalculator(this.DiscountParameters, priceContext);
salesTransaction = totalDiscountCalculator.CalcTotalCustomerDiscount(totalTradeAgreements, salesTransaction);
}
private void CalculateTotalManualDiscount(SalesTransaction transaction, PriceContext priceContext)
{
TotalDiscountCalculator totalDiscountCalculator = new TotalDiscountCalculator(this.DiscountParameters, priceContext);
totalDiscountCalculator.CalculateTotalManualDiscount(transaction);
}