public void EndReading()
{
if (_status != BookReadingStatus.Started)
{
throw new InvalidOperationException("Cannot finish book before starting.");
}
_status = BookReadingStatus.Finished;
Finished = DateTime.Now;
}
private void StartReading()
{
if (_status != BookReadingStatus.InLibrary)
{
throw new InvalidOperationException("Already started reading.");
}
_status = BookReadingStatus.Started;
Started = DateTime.Now;
LastPageRead = 0;
}
public BookReading(Book readBook, int readerId)
{
ReadBook = readBook;
ReaderId = readerId;
_status = BookReadingStatus.InLibrary;
}
