import java.util.Collection;

public class TranscriptRequest implements Runnable
{
	private Thread t;
	private TranscriptParser parser;
	private String userId, password;
	private Exception exception;
	private boolean isDone, isStarted;	

	public TranscriptRequest()
	{
		isDone = false;
		isStarted = false;		
		t = new Thread(this);		
	}

	public boolean isDone()
	{
		return isDone;
	}

	public boolean isStarted()
	{
		return isStarted;
	}

	public Exception getException()
	{
		if(!isDone) return null;
		return exception;
	}

	public Collection getCourses()
	{
		if(!isDone) return null;
		return parser.getCourses();
	}

	public String getTransferCreditCount()
	{
		if(!isDone) return null;		
		return Integer.toString(parser.getTransferCreditCount());
	}

	public String getTotalCreditCount()
	{
		if(!isDone) return null;
		return Integer.toString(parser.getTotalCreditCount());		
	}

	public void start(String userId, String password)
	{
		this.userId = userId;
		this.password = password;
		t.start();
		isStarted = true;
	}

	public void run()
	{
		isDone = false;
			
		try
		{
			parser = new TranscriptParser();
			parser.parse(userId, password);
		}
		catch(Exception e)
		{
			exception = e;
		}

		isDone = true;
	}
}