/*

  *   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 java.util.HashSet;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import org.sonews.util.StringTemplate;

 /**

  * Servlet that shows the Peers and the Peering Rules.

  * @author Christian Lins

  * @since sonews/0.5.0

  */

 public class SonewsPeerServlet extends AbstractSonewsServlet

 {

   private static final long serialVersionUID = 245345346356L;

   @Override

   public void doGet(HttpServletRequest req, HttpServletResponse resp)

     throws IOException

   {

     synchronized(this)

     {

       connectToNewsserver();

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

       // Read peering rules from newsserver

       printlnToNewsserver("XDAEMON LIST PEERINGRULES");

       String line = readlnFromNewsserver();

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

       {

         throw new IOException("Unexpected reply: " + line);

       }

       // Create FEED_RULES String

       HashSet<String> peers        = new HashSet<String>();

       StringBuilder   feedRulesStr = new StringBuilder();

       for(;;)

       {

         line = readlnFromNewsserver();

         if(line.equals("."))

         {

           break;

         }

         else

         {

           feedRulesStr.append(line);

           feedRulesStr.append("<br/>");

           String[] lineChunks = line.split(" ");

           peers.add(lineChunks[1]);

         }

       }

       // Create PEERS string

       StringBuilder peersStr = new StringBuilder();

       for(String peer : peers)

       {

         peersStr.append(peer);

         peersStr.append("<br/>");

       }

       // Set server name

       tmpl.set("PEERS", peersStr.toString());

       tmpl.set("PEERING_RULES", feedRulesStr.toString());

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

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

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

       resp.getWriter().flush();

       resp.setStatus(HttpServletResponse.SC_OK);

       disconnectFromNewsserver();

     }

   }

 }