/*
 * Copyright (C) 2010-2013 Geometer Plus <contact@geometerplus.com>
 *
 * 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

package org.geometerplus.fbreader.network;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.geometerplus.zlibrary.core.resources.ZLResource;
import org.geometerplus.zlibrary.core.util.ZLNetworkUtil;

public class NetworkLibrary {
	
	private static NetworkLibrary ourInstance;
	private final List<INetworkLink> myLinks =
			Collections.synchronizedList(new ArrayList<INetworkLink>());
	public static NetworkLibrary Instance() {
		if (ourInstance == null) {
			ourInstance = new NetworkLibrary();
		}
		return ourInstance;
	}

	public static ZLResource resource() {
		return ZLResource.resource("networkLibrary");
	}
	public String rewriteUrl(String url, boolean externalUrl) {
		final String host = ZLNetworkUtil.hostFromUrl(url).toLowerCase();
		synchronized (myLinks) {
			for (INetworkLink link : myLinks) {
				if (host.contains(link.getSiteName())) {
					url = link.rewriteUrl(url, externalUrl);
				}
			}
		}
		return url;
	}
	
}