public ShippingDetailInfo Execute(ShippingDetailInfo input)
{
IZoneDifferenceStrategy zoneDiffDecor = ZoneDifferenceStrategyFactory.GetInstance().GetZoneDifferenceDecoratorInstance(input.DeliveryMethod);
int zoneDifference = zoneDiffDecor.Difference(input.OriginAddress.PostalCode, input.DestinationAddress.PostalCode);
switch (input.DeliveryMethod)
{
case DeliveryMethodEnum.Air:
input.Cost = zoneDifference * OunceToPound(Convert.ToDouble(input.PackageInfo.Weight)) * GetPackageVolume(input.PackageInfo);
break;
case DeliveryMethodEnum.Rail:
case DeliveryMethodEnum.Ground:
input.Cost = zoneDifference * OunceToPound(Convert.ToDouble(input.PackageInfo.Weight));
break;
default:
throw new InvalidOperationException();
}
// Insurance Calculation
if (input.IsInsured)
{
input.Cost *= 1.02;
}
return(input);
}
public IZoneDifferenceStrategy GetZoneDifferenceDecoratorInstance(DeliveryMethodEnum input)
{
IZoneDifferenceStrategy result = null;
switch (input)
{
case DeliveryMethodEnum.Air:
case DeliveryMethodEnum.Ground:
if (timeZoneDifferenceDecorator == null)
{
timeZoneDifferenceDecorator = new TimeZoneDifferenceStrategy();
}
result = timeZoneDifferenceDecorator;
break;
case DeliveryMethodEnum.Rail:
if (orientationZoneDifferenceDecorator == null)
{
orientationZoneDifferenceDecorator = new OrientationZoneDifferenceStrategy();
}
result = orientationZoneDifferenceDecorator;
break;
default:
break;
}
return(result);
}
public void GetZoneDifferenceDecoratorInstanceTest()
{
ZoneDifferenceStrategyFactory target = ZoneDifferenceStrategyFactory.GetInstance();
DeliveryMethodEnum input = DeliveryMethodEnum.Rail;
IZoneDifferenceStrategy expected = ZoneDifferenceStrategyFactory.GetInstance().GetZoneDifferenceDecoratorInstance(DeliveryMethodEnum.Rail);
IZoneDifferenceStrategy actual;
actual = target.GetZoneDifferenceDecoratorInstance(input);
Assert.AreEqual(expected, actual);
}
