/***************************************************************
 *  This file is part of the [fleXive](R) framework.
 *
 *  Copyright (c) 1999-2010
 *  UCS - unique computing solutions gmbh (http://www.ucs.at)
 *  All rights reserved
 *
 *  The [fleXive](R) project is free software; you can redistribute
 *  it and/or modify it under the terms of the GNU Lesser General Public
 *  License version 2.1 or higher as published by the Free Software Foundation.
 *
 *  The GNU Lesser General Public License can be found at
 *  http://www.gnu.org/licenses/lgpl.html.
 *  A copy is found in the textfile LGPL.txt and important notices to the
 *  license from the author are found in LICENSE.txt distributed with
 *  these libraries.
 *
 *  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 General Public License for more details.
 *
 *  For further information about UCS - unique computing solutions gmbh,
 *  please see the company website: http://www.ucs.at
 *
 *  For further information about [fleXive](R), please see the
 *  project website: http://www.flexive.org
 *
 *
 *  This copyright notice MUST APPEAR in all copies of the file!
 ***************************************************************/
package com.flexive.cms.war.servlets;

import com.flexive.cms.shared.CMSUtils;
import com.flexive.cms.war.CmsRequestUtils;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.Log;

import javax.servlet.*;
import java.io.IOException;

/**
 * Wrapper for the flexive DownloadServlet to serve files from the CMS /files folder.
 *
 * @author Daniel Lichtenberger (daniel.lichtenberger@flexive.com), UCS - unique computing solutions gmbh (http://www.ucs.at)
 * @version $Rev: 55 $
 */
public class FileDownloadServlet implements Servlet {
    private static final Log LOG = LogFactory.getLog(FileDownloadServlet.class);

    private static final String BASE_URL = "/__cmsdownload";

    private ServletConfig config;

    public void init(ServletConfig config) throws ServletException {
        this.config = config;
    }

    public ServletConfig getServletConfig() {
        return config;
    }

    public void service(ServletRequest req, ServletResponse res) throws ServletException, IOException {
        final String requestedPath = CmsRequestUtils.getRequestedURI(req).replace(BASE_URL, "");
        final String treeMode = CmsRequestUtils.isEditTemplatesRequest(req) ? "edit" : "live";
        final String path = "/download/tree/" + treeMode
                + CMSUtils.getTreeRoot()
                + requestedPath
                + "?inline=true";

        if (LOG.isDebugEnabled()) {
            LOG.debug("CMS download servlet: forwarding to " + path);
        }

        req.getRequestDispatcher(path).forward(req, res);
    }

    public String getServletInfo() {
        return "FileDownloadServlet";
    }

    public void destroy() {
    }
}