/*
 * Part of the CCNx Java Library.
 *
 * Copyright (C) 2009-2012 Palo Alto Research Center, Inc.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 * This library 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
 * Lesser General Public License for more details. You should have received
 * a copy of the GNU Lesser General Public License along with this library;
 * if not, write to the Free Software Foundation, Inc., 51 Franklin Street,
 * Fifth Floor, Boston, MA 02110-1301 USA.
 */

package org.ccnx.ccn.impl.repo;

import static org.ccnx.ccn.impl.repo.RepositoryStore.REPO_NAMESPACE;
import static org.ccnx.ccn.impl.repo.RepositoryStore.REPO_POLICY;
import static org.ccnx.ccn.protocol.CCNTime.now;

import java.io.IOException;
import java.util.logging.Level;

import org.ccnx.ccn.impl.repo.PolicyXML.PolicyObject;
import org.ccnx.ccn.impl.support.Log;
import org.ccnx.ccn.io.content.ContentDecodingException;
import org.ccnx.ccn.protocol.ContentName;
import org.ccnx.ccn.protocol.Interest;
import org.ccnx.ccn.protocol.MalformedContentNameStringException;

/**
 * Special purpose handler to handle network files written to control the repository
 * Currently the only example of this are policy files.
 * 
 * This handler is used for anything whose prefix matches the global prefix for the
 * repository
 * 
 */
public class RepositoryPolicyHandler {

	/**
	 * For now just assume anything that comes here is a policy update.
	 * TODO separate out other kinds of files
	 * 
	 * @param origInterest
	 * @param interest
	 * @param server
	 * @throws ContentDecodingException
	 * @throws IOException
	 * @throws RepositoryException 
	 * @throws IOException 
	 * @throws ContentDecodingException 
	 * @throws MalformedContentNameStringException 
	 */
	public RepositoryPolicyHandler(Interest origInterest, Interest interest,
			RepositoryServer server) throws RepositoryException, ContentDecodingException, IOException, MalformedContentNameStringException {
		PolicyObject po = new PolicyObject(interest.name(), server.getHandle());
		PolicyXML pxml = po.policyInfo();
		Policy policy = server.getRepository().getPolicy();
		policy.update(pxml, true);
		ContentName policyName = new ContentName(REPO_NAMESPACE, pxml._localName, REPO_POLICY, now());
		if (Log.isLoggable(Log.FAC_REPO, Level.INFO))
			Log.info(Log.FAC_REPO, "REPO: got policy update, global name {0} local name {1}, saving to {2}", policy.getGlobalPrefix(), policy.getLocalName(), policyName);
		server.resetNamespaceFromHandler();
		
		// TODO need to update repository files from what we have (probably?)
		//ContentObject policyCo = new ContentObject(policyName, co.signedInfo(), co.content(), co.signature());
		//server.getRepository().saveContent(policyCo);
		//if (SystemConfiguration.getLogging(RepositoryStore.REPO_LOGGING))
		//	Log.info("REPO: Saved policy to repository: {0}", policyCo.name());
	}
}