package rep.channel;

import java.nio.channels.SelectableChannel;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;

public class SelectionKeySimulator<P> extends SelectionKey{
	
	private int interestOpt;
	private SelectableChannel channel;
	private int ready;
	public Selector selector;

	public SelectionKeySimulator(SelectableChannel cs, int opt, Selector _selector) {
		channel = cs;
		interestOpt = opt;
		selector = _selector;
	}

	public boolean isAble() {
		if ( (interestOpt&OP_READ)!=0 && isReadable() )
			return true;
		else if( (interestOpt&OP_ACCEPT)!=0 && isAcceptable() )
			return true;
		else if( (interestOpt&OP_WRITE)!=0 && isWritable() )
			return true;
		else
			return false;
	}

	public void setFlag() {
		SelectableChannelSimulator<?> scs = (SelectableChannelSimulator<?>) channel;
		ready = 0;
		if(scs.isAcceptable()) ready |= OP_ACCEPT;
		if(scs.isReadable()) ready |= OP_READ;
		if(scs.isWritable()) ready |= OP_WRITE;
	}

	public SelectableChannel channel() {
		return channel;
	}


	@Override
	public void cancel() {
		System.err.println("cancel is not implemented yet.");
		//selector.
	}

	@Override
	public int interestOps() {
		return interestOpt;
	}

	@Override
	public SelectionKey interestOps(int ops) {
		interestOpt = ops;
		return this;
	}

	@Override
	public boolean isValid() {
		return true;
	}

	@Override
	public int readyOps() {
		return ready;
	}

	@Override
	public Selector selector() {
		return selector;
	}

}