public ActionResult Checkout(string userName, string sessionId)
{
DateTime refTime = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
DateTime currentDate = DateTime.Now;
long unixTime = (long)(currentDate - refTime).TotalSeconds;
unixTime = (long)(currentDate - refTime).TotalSeconds;
//Update purchase table
//CheckoutFunctions.UpdatePurchaseTable(userName, unixTime);
//Clear cart after check out
CartFunctions.EmptyCart(userName);
return(RedirectToAction("ViewPurchases", "History"));
}