/*

 *   SONEWS News Server

 *   see AUTHORS for the list of contributors

 *

 *   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 3 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, see <http://www.gnu.org/licenses/>.

 */

package org.sonews.web;

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.sonews.daemon.Main;

import org.sonews.util.StringTemplate;

/**

 * Main sonews webpage servlet.

 * @author Christian Lins

 * @since sonews/0.5.0

 */

public class SonewsServlet extends AbstractSonewsServlet

{

  private static final long serialVersionUID = 2392837459834L;

  @Override

  public void doGet(HttpServletRequest res, HttpServletResponse resp)

    throws IOException

  {

    synchronized(this)

    {

      connectToNewsserver();

      String line;

      int    connectedClients = 0;

      int    hostedGroups     = 0;

      int    hostedNews       = 0;

      printlnToNewsserver("XDAEMON LOG CONNECTED_CLIENTS");

      line = readlnFromNewsserver();

      if(!line.startsWith("200 "))

      {

        throw new IOException("XDAEMON command not allowed by server");

      }

      line = readlnFromNewsserver();

      connectedClients = Integer.parseInt(line);

      line = readlnFromNewsserver(); // Read the "."

      printlnToNewsserver("XDAEMON LOG HOSTED_NEWS");

      line = readlnFromNewsserver();

      if(!line.startsWith("200 "))

      {

        throw new IOException("XDAEMON command not allowed by server");

      }

      line = readlnFromNewsserver();

      hostedNews = Integer.parseInt(line);

      line = readlnFromNewsserver(); // read the "."

      printlnToNewsserver("XDAEMON LOG HOSTED_GROUPS");

      line = readlnFromNewsserver();

      if(!line.startsWith("200 "))

      {

        throw new IOException("XDAEMON command not allowed by server");

      }

      line = readlnFromNewsserver();

      hostedGroups = Integer.parseInt(line);

      line = readlnFromNewsserver(); // read the "."

      printlnToNewsserver("XDAEMON LOG POSTED_NEWS_PER_HOUR");

      line = readlnFromNewsserver();

      if(!line.startsWith("200 "))

      {

        throw new IOException("XDAEMON command not allowed by server");

      }

      String postedNewsPerHour = readlnFromNewsserver();

      readlnFromNewsserver();

      printlnToNewsserver("XDAEMON LOG GATEWAYED_NEWS_PER_HOUR");

      line = readlnFromNewsserver();

      if(!line.startsWith("200 "))

      {

        throw new IOException("XDAEMON command not allowed by server");

      }

      String gatewayedNewsPerHour = readlnFromNewsserver();

      line = readlnFromNewsserver();

      printlnToNewsserver("XDAEMON LOG FEEDED_NEWS_PER_HOUR");

      line = readlnFromNewsserver();

      if(!line.startsWith("200 "))

      {

        throw new IOException("XDAEMON command not allowed by server");

      }

      String feededNewsPerHour = readlnFromNewsserver();

      line = readlnFromNewsserver();

      StringTemplate tmpl = getTemplate("SonewsServlet.tmpl");

      tmpl.set("SERVERNAME", hello.split(" ")[2]);

      tmpl.set("STARTDATE", Main.STARTDATE);

      tmpl.set("ACTIVE_CONNECTIONS", connectedClients);

      tmpl.set("STORED_NEWS", hostedNews);

      tmpl.set("SERVED_NEWSGROUPS", hostedGroups);

      tmpl.set("POSTED_NEWS", postedNewsPerHour);

      tmpl.set("GATEWAYED_NEWS", gatewayedNewsPerHour);

      tmpl.set("FEEDED_NEWS", feededNewsPerHour);

      tmpl.set("TITLE", "Overview");

      resp.getWriter().println(tmpl.toString());

      resp.getWriter().flush();

      resp.setStatus(HttpServletResponse.SC_OK);

      disconnectFromNewsserver();

    }

  }

}