Synnefo

/*

 * Copyright 2008, 2009 Electronic Business Systems Ltd.

 *

 * This file is part of GSS.

 *

 * GSS 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 3 of the License, or

 * (at your option) any later version.

 *

 * GSS 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 GSS.  If not, see <http://www.gnu.org/licenses/>.

 */

package org.gss_project.gss.server.rest;

import org.gss_project.gss.common.exceptions.ObjectNotFoundException;

import org.gss_project.gss.common.exceptions.RpcException;

import org.gss_project.gss.server.domain.User;

import java.io.IOException;

import java.util.Set;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.json.JSONArray;

/**

 * A class that handles operations on the 'tags' namespace.

 *

 * @author past

 */

public class TagsHandler extends RequestHandler {

        /**

         * The logger.

         */

        private static Log logger = LogFactory.getLog(TagsHandler.class);

        /**

     * Serve the tags defined by the user.

     *

     * @param req The servlet request we are processing

     * @param resp The servlet response we are processing

     * @throws IOException if an input/output error occurs

         */

        void serveTags(HttpServletRequest req, HttpServletResponse resp) throws IOException {

        String path = getInnerPath(req, PATH_TAGS);

                if (path.equals(""))

                        path = "/";

            if (path.equals("/")) {

                Set<String> tags;

                try {

                    User user = getUser(req);

                    User owner = getOwner(req);

                    if (!owner.equals(user)) {

                            resp.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);

                            return;

                    }

                        tags = getService().getUserTags(user.getId());

                    } catch (ObjectNotFoundException e) {

                            logger.error("User not found", e);

                            resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);

                            return;

                    } catch (RpcException e) {

                            logger.error("", e);

                            resp.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);

                            return;

                    }

                JSONArray json = new JSONArray();

                for (String tag: tags)

                            json.put(tag);

                sendJson(req, resp, json.toString());

            } else {

                        resp.sendError(HttpServletResponse.SC_NOT_FOUND);

                        return;

            }

        }

}