public Order BuildOrder(IList<Product> products)
{
var result = new Order();
var productGroup = products.GroupBy(product => product.Name);
foreach (var item in productGroup)
{
var orderItem = new OrderItem { Item = item.First(), Quantity = item.Count() };
this.ProcessPrice(orderItem);
result.Items.Add(orderItem);
}
result.TotalTaxes = result.Items.Sum(item => item.TotalTaxes);
result.TotalPrices = result.Items.Sum(item => item.TotalPrices);
return result;
}
private void ProcessPrice(OrderItem orderItem)
{
decimal netPrices = orderItem.Item.Price * orderItem.Quantity;
decimal salesTax = this._taxService.CalculateTax(orderItem.Item.SalesTaxType.ToString(), netPrices);
decimal dutyTax = this._taxService.CalculateTax(orderItem.Item.DutyTaxType.ToString(), netPrices);
decimal totalTaxes = decimal.Round(salesTax + dutyTax, 2, MidpointRounding.AwayFromZero);
decimal totalPrice = netPrices + totalTaxes;
orderItem.TotalTaxes = totalTaxes;
orderItem.TotalPrices = totalPrice;
}
