/*

  *   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.daemon.command;

 import java.io.IOException;

 import java.sql.SQLException;

 import org.sonews.daemon.storage.Article;

 import org.sonews.daemon.NNTPConnection;

 /**

  * Implementation of the STAT command.

  * @author Christian Lins

  * @since sonews/0.5.0

  */

 public class StatCommand extends AbstractCommand

 {

   public StatCommand(final NNTPConnection conn)

   {

     super(conn);

   }

   @Override

   public boolean hasFinished()

   {

     return true;

   }

   // TODO: Method has various exit points => Refactor!

   @Override

   public void processLine(final String line)

     throws IOException, SQLException

   {

     final String[] command = line.split(" ");

     Article article = null;

     if(command.length == 1)

     {

       article = getCurrentArticle();

       if(article == null)

       {

         printStatus(420, "no current article has been selected");

         return;

       }

     }

     else if(command[1].matches(NNTPConnection.MESSAGE_ID_PATTERN))

     {

       // Message-ID

       article = Article.getByMessageID(command[1]);

       if (article == null)

       {

         printStatus(430, "no such article found");

         return;

       }

     }

     else

     {

       // Message Number

       try

       {

         long aid = Long.parseLong(command[1]);

         article = Article.getByArticleNumber(aid, getCurrentGroup());

       }

       catch(NumberFormatException ex)

       {

         ex.printStackTrace();

       }

       catch(SQLException ex)

       {

         ex.printStackTrace();

       }

       if (article == null)

       {

         printStatus(423, "no such article number in this group");

         return;

       }

       setCurrentArticle(article);

     }

     printStatus(223, article.getIndexInGroup(getCurrentGroup()) + " " + article.getMessageID()

           + " article retrieved - request text separately");

   }

 }