/// <summary>
/// Calculates the shipping price for a sales order
/// ### Complete this method
/// </summary>
/// Assumptions
/// Price Based Shipping Rate Calculations: Total Price of all the products in the order is considered to calculate the shipping rate for Price Based Method
/// Weight Based Shipping Rate Calcuations: Total Weight of all the products in the order is considered to calculate the shipping rate for Weight Based Method
/// API Based Shipping Rate Calcuations: There is little bit confusion on this part of calculations. Here my understanding suggested that if product weighs between 10 to 30 I have added 5m to Weight based calculation
/// I thought to get maximum from Price Based and Weight based and add the rate adjustment price to it. Similar approach is used for Rate Adjustment Percent.
public decimal Calculate(SalesOrder salesOrder)
{
//throw new NotImplementedException();
decimal shippingCost = 0.00m;
// decimal ShippingAPICost = 0.00m;
if (salesOrder != null && salesOrder.Lines.Count() > 0)
{
decimal TotalPrice = 0.00m;
decimal TotalWeight = 0.00m;
foreach (SalesOrderLine orderLine in salesOrder.Lines)
{
TotalPrice += (orderLine.Price * orderLine.Quantity);
if (orderLine.Product != null)
{
TotalWeight += (orderLine.Product.Weight * orderLine.Quantity);
}
}
ShippingCalculator shippingCalculator = new ShippingCalculator();
var ShippingPriceCost = CalculateShippingRate(TotalPrice, shippingCalculator._priceRates);
var ShippingWeightCost = CalculateShippingRate(TotalWeight, shippingCalculator._weightRates);
//var ApiCalculatedWeight = ShippingApiClient.get
var shippingapiclient = new ShippingApiClient();
var apiweightCost = shippingapiclient.GetRate(decimal.Parse(salesOrder.DeliveryPostalCode), decimal.Parse(salesOrder.DeliveryPostalCode), TotalWeight);
var ShippingAPICost = CalculateShippingRate(TotalWeight, shippingCalculator._apiRates, apiweightCost);
shippingCost = GetMax(ShippingPriceCost, ShippingWeightCost, ShippingAPICost);
}
return(shippingCost);
}
/// <summary>
/// Given an order, calculate the best shipping amount according to ShippingAPIRate rule
/// </summary>
/// <param name="order"></param>
/// <returns>The shipping amount sent and total shipping cost</returns>
public Tuple <decimal, decimal> CalculateThridPartyBasedOptimalShippingAmount(SalesOrder order)
{
var shippingCost = 0m;
var shippingWeight = order.GetOrderShippingWeight();
if (shippingWeight >= 0 && shippingWeight < 10)
{
shippingCost = shippingWeight * _client.GetRate(0, 0, shippingWeight);
}
else if (shippingWeight >= 10 && shippingWeight <= 30)
{
shippingCost = shippingWeight * (_client.GetRate(0, 0, shippingWeight) + 5);
}
else if (shippingWeight > 30 && shippingWeight <= 35)
{
shippingCost = shippingWeight * (_client.GetRate(0, 0, shippingWeight) * 1.075m);
}
else if (shippingWeight > 35)
{
shippingCost = shippingWeight * _client.GetRate(0, 0, shippingWeight);
}
return(new Tuple <decimal, decimal>(shippingWeight, shippingCost));
}