public decimal Calculate(Order order)
{
#region
if (order == null)
{
throw new ArgumentNullException(nameof(order));
}
if (order.Quantity <= 0)
{
throw new ArgumentOutOfRangeException(nameof(order.Quantity));
}
#endregion
if (discountValidatorStrategy.CanDiscount(order))
{
return(order.Amount - discountCalculatorStrategy.CalculateDiscount(order));
}
else
{
return(order.Amount);
}
}
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);
}
}
