public double CalculateDiscountAmount(DiscountCard card, double purchaseAmount)
{
var settings = GetSettings(card);
if (settings == null)
{
return(purchaseAmount);
}
else
{
return(purchaseAmount * settings.Percentage / 100.00);
}
}
public double GetDiscountPercentage(DiscountCard card)
{
var settings = GetSettings(card);
return(settings?.Percentage ?? 0);
}
