/*
 * 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.webapp.admin.server;

import java.io.IOException;
import java.util.Locale;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import javax.management.MBeanServer;
import javax.management.ObjectName;

import org.apache.struts.util.MessageResources;
import org.apache.webapp.admin.ApplicationServlet;

/**
 * Test <code>Action</code> that handles events from the tree control test
 * page.
 *
 * @author Jazmin Jonson
 * @author Manveen Kaur
 * @version $Revision$ $Date$
 */

public class EditServerAction extends Action {
    

    /**
     * The MBeanServer we will be interacting with.
     */
    private MBeanServer mBServer = null;
    
    // --------------------------------------------------------- Public Methods
    
    /**
     * Process the specified HTTP request, and create the corresponding HTTP
     * response (or forward to another web component that will create it).
     * Return an <code>ActionForward</code> instance describing where and how
     * control should be forwarded, or <code>null</code> if the response has
     * already been completed.
     *
     * @param mapping The ActionMapping used to select this instance
     * @param actionForm The optional ActionForm bean for this request (if any)
     * @param request The HTTP request we are processing
     * @param response The HTTP response we are creating
     *
     * @exception IOException if an input/output error occurs
     * @exception ServletException if a servlet exception occurs
     */
    public ActionForward execute(ActionMapping mapping,
    ActionForm form,
    HttpServletRequest request,
    HttpServletResponse response)
    throws IOException, ServletException {
        
         // Acquire the resources that we need
        HttpSession session = request.getSession();
        Locale locale = getLocale(request);
        MessageResources resources = getResources(request);
        // Acquire a reference to the MBeanServer containing our MBeans
        try {
            mBServer = ((ApplicationServlet) getServlet()).getServer();
        } catch (Throwable t) {
            throw new ServletException
            ("Cannot acquire MBeanServer reference", t);
        }

        // label of the node that was clicked on.
        String nodeLabel = request.getParameter("nodeLabel");  
        String select = request.getParameter("select");        
        
        ServerForm serverFm = new ServerForm();
        session.setAttribute("serverForm", serverFm);
        serverFm.setNodeLabel(nodeLabel);        
        serverFm.setObjectName(select);
        
        ObjectName sname = null;    
        try {
            sname = new ObjectName(select);
        } catch (Exception e) {
            String message =
                resources.getMessage(locale, "error.serviceName.bad",
                                     request.getParameter("select"));
            getServlet().log(message);
            response.sendError(HttpServletResponse.SC_BAD_REQUEST, message);
            return (null);
        }
      
        String attribute = null;
        try {
            // Copy scalar properties
            attribute = "port";
            serverFm.setPortNumberText
                (((Integer) mBServer.getAttribute(sname, attribute)).toString());
            attribute = "shutdown";
            serverFm.setShutdownText
                ((String) mBServer.getAttribute(sname, attribute));

            } catch (Throwable t) {
            getServlet().log
                (resources.getMessage(locale, "users.error.attribute.get",
                                      attribute), t);
            response.sendError
                (HttpServletResponse.SC_INTERNAL_SERVER_ERROR,
                 resources.getMessage(locale, "users.error.attribute.get",
                                      attribute));
            return (null);
        }

        //forward to the server jsp.
        return (mapping.findForward("Server"));        
    }
        
}