/*
 * Copyright (c) 2011 TMate Software Ltd
 *  
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * For information on how to redistribute this software under
 * the terms of a license other than GNU General Public License
 * contact TMate Software at support@hg4j.com
 */
package org.tmatesoft.hg.console;

import java.util.Collection;
import java.util.List;

import org.tmatesoft.hg.core.HgException;
import org.tmatesoft.hg.core.Nodeid;
import org.tmatesoft.hg.internal.RepositoryComparator;
import org.tmatesoft.hg.repo.HgChangelog;
import org.tmatesoft.hg.repo.HgLookup;
import org.tmatesoft.hg.repo.HgRemoteRepository;
import org.tmatesoft.hg.repo.HgRepository;


/**
 * WORK IN PROGRESS, DO NOT USE
 * hg outgoing
 * 
 * @author Artem Tikhomirov
 * @author TMate Software Ltd.
 */
public class Outgoing {

	public static void main(String[] args) throws Exception {
		Options cmdLineOpts = Options.parse(args);
		HgRepository hgRepo = cmdLineOpts.findRepository();
		if (hgRepo.isInvalid()) {
			System.err.printf("Can't find repository in: %s\n", hgRepo.getLocation());
			return;
		}
		HgRemoteRepository hgRemote = new HgLookup().detectRemote("hg4j-gc", hgRepo);
		if (hgRemote.isInvalid()) {
			System.err.printf("Remote repository %s is not valid", hgRemote.getLocation());
			return;
		}

		HgChangelog.ParentWalker pw = hgRepo.getChangelog().new ParentWalker();
		pw.init();
		
		RepositoryComparator repoCompare = new RepositoryComparator(pw, hgRemote);
		repoCompare.compare(null);
		List<Nodeid> commonKnown = repoCompare.getCommon();
		dump("Nodes known to be both locally and at remote server", commonKnown);
		// sanity check
		for (Nodeid n : commonKnown) {
			if (!pw.knownNode(n)) {
				throw new HgException("Unknown node reported as common:" + n);
			}
		}
		// find all local children of commonKnown
		List<Nodeid> result = pw.childrenOf(commonKnown);
		dump("Result", result);
	}
	

	private static void dump(String s, Collection<Nodeid> c) {
		System.out.println(s);
		for (Nodeid n : c) {
			System.out.println(n);
		}
	}
}