public double Total(IList <CartItem> cart)
{
if (cart == null || cart.Count == 0)
{
return(0);
}
double runningTotal = 0;
foreach (var item in cart)
{
var product = _productRepository.Get(item.ProductId);
if (product != null)
{
runningTotal += item.UnitQuantity * product.Price;
}
}
return(runningTotal + _shippingCalculator.CalcShipping(runningTotal));
}
