static void Main(string[] args)
{
Order order = new Order();
order.CustomerName = "Microsoft";
order.CustomerNumber = 1000;
order.ShipToAddress = "One Microsoft Way";
order.ShipToCity = "Redmond";
order.ShipToState = "WA";
order.ShipToZipCode = "98052";
order.ShipToCountryCode = "USA";
order.TotalOrderValue = Convert.ToDecimal(500.00);
order.OrderAdjustments = new List <OrderAdjustment>();
OrderAdjustment adjustment1 = new OrderAdjustment();
adjustment1.CalculationType = "StateSalesTax";
adjustment1.CalculationEntity = order.ShipToState;
order.OrderAdjustments.Add(adjustment1);
OrderAdjustment adjustment2 = new OrderAdjustment();
adjustment2.CalculationType = "PromotionalDiscount";
adjustment2.CalculationEntity = "PROMO50";
order.OrderAdjustments.Add(adjustment2);
OrderAdjustment adjustment3 = new OrderAdjustment();
adjustment3.CalculationType = "VolumeDiscount";
adjustment3.CalculationEntity = "TIER1";
order.OrderAdjustments.Add(adjustment3);
IDataAccessService dataAccessService = new DataAccessService();
List <ICalculation> calculations = new List <ICalculation>();
ICalculation promotionalCalculation = new PromotionalDiscountCalculation(dataAccessService);
ICalculation stateCalculation = new StateSalesTaxCalculation(dataAccessService);
ICalculation valueAddedCalculation = new ValueAddedTaxCalculation(dataAccessService);
ICalculation volumeDiscountCalculation = new VolumeDiscountCalculation(dataAccessService);
calculations.Add(promotionalCalculation);
calculations.Add(stateCalculation);
calculations.Add(valueAddedCalculation);
calculations.Add(volumeDiscountCalculation);
OrderAdjustmentsBusinessService businessService = new OrderAdjustmentsBusinessService(dataAccessService, calculations);
order.NetOrderValue = businessService.CalculateOrderAdjustments(order.OrderAdjustments, order.TotalOrderValue);
Console.WriteLine(order.NetOrderValue);
Console.ReadLine();
}
/// <summary>
/// Calculate each adjustment
/// </summary>
/// <param name="orderAdjustments"></param>
/// <param name="calculations"></param>
/// <param name="orderValue"></param>
/// <returns></returns>
private decimal Calculate(List <OrderAdjustment> orderAdjustments, List <ICalculation> calculations, decimal orderValue)
{
decimal netOrderAmount = orderValue;
foreach (ICalculation calculation in calculations)
{
OrderAdjustment orderAdjustment = orderAdjustments.Where(x => x.CalculationType == calculation.CalculationType).FirstOrDefault();
if (orderAdjustment != null)
{
netOrderAmount = calculation.Calculate(orderAdjustment.CalculationEntity, netOrderAmount);
}
}
return(netOrderAmount);
}