public Task <IOrderCost> CalculateTotalCost()
{
IOrderCost totalcost = new OrderCost();
try
{
var booklist = GetBookOrderList().Result;
if (booklist != null)
{
foreach (var item in booklist)
{
IBookSale booksale = GetBookOnSale(item).Result;
if (Math.Abs(booksale.DiscountedPrice()) > 0)
{
totalcost.Subtotal += booksale.DiscountedPrice();
}
else
{
totalcost.Subtotal += booksale.BookDetail.Cost;
}
}
totalcost.Subtotal = Math.Round(totalcost.Subtotal, 2);
totalcost.Totaltax = Math.Round(totalcost.Subtotal * (Constant.ORDER_TAX_TOTAL), 2);
totalcost.TotalCost = Math.Round((totalcost.Subtotal + totalcost.Totaltax), 2);
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
return(Task.FromResult <IOrderCost>(totalcost));
}
public string DisplayOrder()
{
StringBuilder displaydata = new StringBuilder();
try
{
var booklist = _dbBookManager.GetBookOrderList().Result;
if (booklist != null)
{
foreach (var item in booklist)
{
IBookSale booksale = _dbBookManager.GetBookOnSale(item).Result;
string ordername = booksale.BookDetail.Name.PadRight(30) + booksale.CategoryDetail.Name.PadRight(20);
if (Math.Abs(booksale.DiscountedPrice()) > 0)
{
string discountorder = booksale.PromoDetail.Description.PadRight(25) + booksale.BookDetail.Cost;
displaydata.AppendLine(ordername + booksale.DiscountedPrice());
displaydata.AppendLine(discountorder);
}
else
{
displaydata.AppendLine(ordername + booksale.BookDetail.Cost);
}
}
IOrderCost totalorder = _dbBookManager.CalculateTotalCost().Result;
displaydata.AppendLine();
displaydata.AppendLine("============================");
displaydata.AppendLine("Sub Total :" + totalorder.Subtotal);
displaydata.AppendLine("Total Tax :" + totalorder.Totaltax);
displaydata.AppendLine("Total :" + totalorder.TotalCost);
displaydata.AppendLine("============================");
displaydata.AppendLine();
}
}
catch (Exception e)
{
Console.WriteLine(e);
}
return(displaydata.ToString());
}
