public override decimal CalculateCostComponent(Order order)
{
decimal taxAmount = _taxRate * order.Cost.EffectivePrice * order.Quantity;
order.Cost.TaxAmount = taxAmount;
order.Cost.TaxRate = _taxRate;
return taxAmount + CostComponent.CalculateCostComponent(order);
}
private decimal CalculateTotalPrice(Order order)
{
decimal totalPrice = 0.0M;
if (order != null)
{
totalPrice = order.Quantity * order.Cost.EffectivePrice;
}
return totalPrice;
}
public void Process_OrderIsNotShipped_ShouldSetTheShipmentPropertyOfTheOrder()
{
var orderProcessor = new OrderProcessor(new FakeShippingCalculator());
var order = new Order();
orderProcessor.Process(order);
Assert.IsTrue(order.IsShipped);
Assert.AreEqual(1, order.Shipment.Cost);
Assert.AreEqual(DateTime.Today.AddDays(1), order.Shipment.ShippingDate);
}
public void Process_OrderIsAlreadyShipped_ThrowsAnException()
{
var orderProcessor = new OrderProcessor(new FakeShippingCalculator());
var order = new Order
{
Shipment = new Shipment()
};
orderProcessor.Process(order);
}
public object Process(Order order, IOrderConfig orderConfig)
{
ShippingCost = CreateShippingCostCalculator(orderConfig); // Factory Method pattern
// Decorator pattern - set up the types cost components to be calculated, in the desired order.
CostComponent costComponent = new ShippingCostElement(this);
costComponent = new IncomeTaxCostElement(costComponent);
order.Cost.Total = costComponent.CalculateCostComponent(order);
return order;
}
public void Process(Order order)
{
if (order.IsShipped)
{
throw new InvalidOperationException("This order is already processed.");
}
order.Shipment = new Shipment
{
Cost = _shippingCalculator.CalculateShipping(order),
ShippingDate = DateTime.Today.AddDays(1)
};
}
/// <summary>
/// An implementation of IShippingCost for calculating FedEx shipping cost
/// </summary>
public decimal CalculateShippingCost(Order order, bool updateOrder = true)
{
decimal shippingCost = 0.0M;
if (order != null && order.Cost != null)
{
// TODO: make the rate configurable or encapsulated
shippingCost = Convert.ToDecimal(order.Weight) * 0.2M;
if (updateOrder)
{
order.Cost.ShippingCost = shippingCost;
}
}
return shippingCost;
}
/// <summary>
/// An implementation of IShippingCost for calculating USPS shipping cost
/// </summary>
public decimal CalculateShippingCost(Order order, bool updateOrder = true)
{
decimal shippingCost = 0.0M;
if (order != null && order.Cost != null)
{
// TODO: make the rate configurable or encapsulated
shippingCost = order.Cost.EffectivePrice * order.Quantity * 0.4M;
if (updateOrder)
{
order.Cost.ShippingCost = shippingCost;
}
}
return shippingCost;
}
static void Main(string[] args)
{
var orderProcessor = new OrderProcessor(new ShippingCalculator());
var order = new Order { DatePlaced = DateTime.Now, TotalPrice = 100f };
orderProcessor.Process(order);
}
public float CalculateShipping(Order order)
{
return 1;
}
/// <summary>
/// Implementation of the CostComponent class's method for calculating the product price component
/// </summary>
/// <param name="order"></param>
/// <returns></returns>
public override decimal CalculateCostComponent(Order order)
{
return CalculateTotalPrice(order);
}
public override decimal CalculateCostComponent(Order order)
{
return CostComponent.CalculateCostComponent(order) + ShippingCost.CalculateShippingCost(order);
}