public void Scan()
{
if (ItemsCount < 1)
{
throw new ArgumentException($"Cannot scan Item(EAN: {BookEan.Code}) that do not have any positions");
}
if (IsAllScanned)
{
throw new ArgumentException($"All positions of Item(EAN: {BookEan.Code}) are scanned");
}
if (ScannedCount >= ItemsCount)
{
throw new ArgumentException($"Cannot scan more positions for Item(EAN: {BookEan.Code}) because all positions are already scanned");
}
ScannedCount++;
if (ScannedCount > 0)
{
IsScanned = true;
}
if (ScannedCount.Equals(ItemsCount))
{
IsAllScanned = true;
}
}
public void Unscan()
{
if (ItemsCount < 1)
{
throw new ArgumentException($"Cannot unscan Item(EAN: {BookEan.Code}) that do not have any positions");
}
if (!IsScanned)
{
throw new ArgumentException($"Cannot unscan Item(EAN: {BookEan.Code}) that do not have any scanned positions");
}
ScannedCount--;
if (ScannedCount.Equals(0))
{
IsScanned = false;
}
if (ScannedCount < ItemsCount)
{
IsAllScanned = false;
}
}