/* $Id$ */
package org.noreply.fancydress.type3;

import org.noreply.fancydress.directory.*;
import org.noreply.fancydress.status.*;
import org.noreply.fancydress.type3.routing.*;
import java.util.*;

public class HalfPath {
	private Hop[] hops;
	public HalfPath(Hop[] hops) {
		this.hops = hops;
	}

	private String[] tokenize(String path) throws Mix3Exception {
		ArrayList nicks = new ArrayList();
		int indexFrom = 0;
		int indexOf;

		while ((indexOf = path.indexOf(',', indexFrom)) != -1) {
			String v = path.substring(indexFrom, indexOf).trim();
			if (v.equals(""))
				throw new Mix3Exception("Invalid path.");
			nicks.add( v );
			indexFrom = indexOf + 1;
		}
		String v = path.substring(indexFrom).trim();
		if (v.equals(""))
			throw new Mix3Exception("Invalid path.");
		nicks.add( v );

		String[] result = new String[nicks.size()];
		for (int i=0; i<result.length; i++)
			result[i] = (String) nicks.get(i);

		return result;
	}

	public HalfPath(Directory dir, String path) throws Mix3Exception {
		String[] nicks = tokenize(path);
		hops = new Hop[nicks.length];

		for (int i=0; i<hops.length; i++) {
			Server server = dir.getServer(nicks[i]);
			if (server == null)
				throw new Mix3Exception("Invalid path: "+nicks[i]+" not found");
			ServerDescriptor desc = server.getDescriptor();
			IncomingMMTPSection incoming = desc.getIncomingMMTPSection();
			Routing routing;

			if (incoming.getHostname() != null) { /* FIXME */
				routing = new RoutingHOST(incoming.getHostname(), incoming.getPort(), server.getKeyID());
			} else {
				routing = new RoutingIP4(incoming.getIP(), incoming.getPort(), server.getKeyID());
			}
			hops[i] = new Hop(routing, desc.getPacketKey());
		}
	}

	public Hop[] getHops() {
		return hops;
	}
}