public Package(string description, decimal price, PhysicalParameters physicalParameters, DeliveryDetails deliveryDetails)
{
Description = description ?? throw new ArgumentNullException(nameof(description));
DeliveryDetails = deliveryDetails ?? throw new ArgumentNullException(nameof(deliveryDetails));
PhysicalParameters = physicalParameters ?? throw new ArgumentNullException(nameof(physicalParameters));
Price = price > 0 ? price : throw new ArgumentException($"{nameof(price)} cannot be less than zero", nameof(price));
Status = DeliveryStatus.NotSent;
DeliveryPrice = CalculateDeliveryPrice(SizeCategory, WeightCategory);
InvoiceNo = GenerateInvoiceNo();
}
private SizeCategory GetSizeCategory(PhysicalParameters measure)
{
const double SmallLimit = 0.2;
const double MediumLimit = 0.5;
const double LargeLimit = 1;
if (measure.Height <= SmallLimit && measure.Length <= SmallLimit && measure.Width <= SmallLimit)
{
return(SizeCategory.Small);
}
else if (measure.Height <= MediumLimit && measure.Length <= MediumLimit && measure.Width <= MediumLimit)
{
return(SizeCategory.Medium);
}
else if (measure.Height <= LargeLimit && measure.Length <= LargeLimit && measure.Width <= LargeLimit)
{
return(SizeCategory.Large);
}
else
{
return(SizeCategory.ExtraLarge);
}
}