/// <summary>
/// Calculates all of the discounts for the transactions.
/// </summary>
/// <param name="pricingDataManager">Provides data access to the calculation.</param>
/// <param name="transaction">The sales transaction.</param>
/// <param name="priceContext">The price context.</param>
internal void CalculateDiscount(
IPricingDataAccessor pricingDataManager,
SalesTransaction transaction,
PriceContext priceContext)
{
if (transaction == null)
{
throw new ArgumentNullException("transaction");
}
bool priceLock = false;
PricingEngine.PopulateProductIds(pricingDataManager, priceContext, transaction);
// if prices aren't locked on transaction, compute automatic discounts
if (!priceLock)
{
// Clear all the periodic discounts
ClearDiscountLinesOfType(transaction, null);
// Now calculate the discounts.
DiscountCalculator calculator = new DiscountCalculator(transaction, priceContext, pricingDataManager);
calculator.CalculateDiscounts(transaction);
// Calculation of customer discount
// should pass in "sales rounding" rule
if (!string.IsNullOrEmpty(transaction.CustomerId))
{
// Calculation of customer discount
this.CalcCustomerDiscount(pricingDataManager, transaction, priceContext); // should pass in "sales rounding" rule
}
}
// this is manual total discount, it should always be calculated
// technically, this should be a different rounding rule for sales rounding
this.CalculateLineManualDiscount(transaction, priceContext);
this.CalculateTotalManualDiscount(transaction, priceContext);
Discount.CalculateLoyaltyManualDiscount(transaction, priceContext);
}