private static void CalculatePrice(string commandName, string[] arguments, ICommandInvoker commandInvoker)
{
IBasketService basketService = new BasketService(dbContext);
GetProductsByNameCommand getProductByNameCommand = new GetProductsByNameCommand(basketService);
getProductByNameCommand.ProductNames = arguments;
commandInvoker.ExecuteCommand(getProductByNameCommand);
IEnumerable <BasketItem> products = getProductByNameCommand.Result;
if (products.Count() == 0)
{
Console.WriteLine("Given products are not available!");
return;
}
CalculateTotalPriceCommand calculateTotalPriceCommand = AppCommandsByName[commandName] as CalculateTotalPriceCommand;
calculateTotalPriceCommand.Items = products;
commandInvoker.ExecuteCommand(calculateTotalPriceCommand);
decimal basketItemsTotalPrice = calculateTotalPriceCommand.Result;
Console.WriteLine($"Subtotal: {basketItemsTotalPrice:c}");
IDateTimeUtil dateTimeUtil = new DateTimeUtil();
ITimespanDiscountCalculator timespanDiscountCalculator = new TimespanDiscountCalculator(dateTimeUtil);
IQuantityDiscountCalculator quantityDiscountCalculator = new QuantityDiscountCalculator();
IDiscountService discountService = new DiscountService(dbContext, timespanDiscountCalculator, quantityDiscountCalculator);
GetDiscountsCommand getDiscountCommand = new GetDiscountsCommand(discountService);
getDiscountCommand.Items = products;
commandInvoker.ExecuteCommand(getDiscountCommand);
IEnumerable <DiscountResult> discounts = getDiscountCommand.Result;
if (discounts.Count() > 0)
{
foreach (DiscountResult discount in discounts)
{
Console.WriteLine($"{discount.ProductPluralName} {discount.DiscountPercentage:p0} off: -{discount.DiscountedPrice:c}");
}
}
else
{
Console.WriteLine("(No offers available)");
}
decimal discountPrice = discounts.Sum(s => s.DiscountedPrice);
decimal totalPrice = basketItemsTotalPrice - discountPrice;
Console.WriteLine($"Total price: {totalPrice:c}");
}