public decimal CalculateDiscount(Order order)
{
if (Log != null)
{
Log($"Calculating... {order.OrderNumber}");
}
if (discountValidatorStrategy.CanDiscount(order))
{
if (Log != null)
{
Log("Calculated");
}
return(discountCalculatorStrategy.Discount(order));
}
else
{
return(0);
}
}