/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.lucene.gdata.servlet.handler;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.lucene.gdata.data.GDataAccount;
import org.apache.lucene.gdata.data.ServerBaseFeed;
import org.apache.lucene.gdata.server.GDataResponse;
import org.apache.lucene.gdata.server.ServiceException;
import org.apache.lucene.gdata.server.ServiceFactory;
import org.apache.lucene.gdata.server.administration.AdminService;
import org.apache.lucene.gdata.server.registry.ComponentType;
import org.apache.lucene.gdata.server.registry.GDataServerRegistry;

/**
 * @author Simon Willnauer
 * 
 */
public class UpdateFeedHandler extends AbstractFeedHandler {
    private static final Log LOG = LogFactory.getLog(UpdateFeedHandler.class);

    /**
     * @see org.apache.lucene.gdata.servlet.handler.AbstractFeedHandler#processRequest(javax.servlet.http.HttpServletRequest,
     *      javax.servlet.http.HttpServletResponse)
     */
    @SuppressWarnings("unused")
    @Override
    public void processRequest(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        super.processRequest(request, response);
        if (this.authenticated) {
            AdminService service= null;
            try {
                ServerBaseFeed feed = createFeedFromRequest(request);
                GDataAccount account = createRequestedAccount(request);

                GDataServerRegistry registry = GDataServerRegistry
                        .getRegistry();
                ServiceFactory serviceFactory = registry.lookup(
                        ServiceFactory.class, ComponentType.SERVICEFACTORY);
                if (serviceFactory == null) {
                    setError(GDataResponse.SERVER_ERROR,
                            "required component is not available");
                    throw new FeedHandlerException(
                            "Can't update feed - ServiceFactory is null");
                }
                service = serviceFactory.getAdminService();
                service.updateFeed(feed, account);
            } catch (ServiceException e) {
                setError(e.getErrorCode(),
                        "can not update feed");
                LOG.error("Can not update feed -- " + e.getMessage(), e);
            } catch (Exception e) {

                LOG.error("Can not update feed -- " + e.getMessage(), e);

            }finally{
                if(service != null)
                    service.close();
            }
        }
        sendResponse(response);
        
    }

}