chris@1: /*
chris@1:  *   SONEWS News Server
chris@1:  *   see AUTHORS for the list of contributors
chris@1:  *
chris@1:  *   This program is free software: you can redistribute it and/or modify
chris@1:  *   it under the terms of the GNU General Public License as published by
chris@1:  *   the Free Software Foundation, either version 3 of the License, or
chris@1:  *   (at your option) any later version.
chris@1:  *
chris@1:  *   This program is distributed in the hope that it will be useful,
chris@1:  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
chris@1:  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
chris@1:  *   GNU General Public License for more details.
chris@1:  *
chris@1:  *   You should have received a copy of the GNU General Public License
chris@1:  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
chris@1:  */
chris@1: 
chris@1: package org.sonews.daemon.command;
chris@1: 
chris@1: import java.io.IOException;
chris@3: import org.sonews.storage.Article;
chris@1: import org.sonews.daemon.NNTPConnection;
chris@3: import org.sonews.storage.StorageBackendException;
chris@1: 
chris@1: /**
chris@1:  * Implementation of the STAT command.
chris@1:  * @author Christian Lins
chris@1:  * @since sonews/0.5.0
chris@1:  */
chris@3: public class StatCommand implements Command
chris@1: {
chris@1: 
chris@3:   @Override
chris@3:   public String[] getSupportedCommandStrings()
chris@1:   {
chris@3:     return new String[]{"STAT"};
chris@1:   }
chris@1: 
chris@1:   @Override
chris@1:   public boolean hasFinished()
chris@1:   {
chris@1:     return true;
chris@1:   }
chris@1: 
chris@3:   @Override
cli@20:   public String impliedCapability()
cli@20:   {
cli@20:     return null;
cli@20:   }
cli@20: 
cli@20:   @Override
chris@3:   public boolean isStateful()
chris@3:   {
chris@3:     return false;
chris@3:   }
chris@3: 
chris@1:   // TODO: Method has various exit points => Refactor!
chris@1:   @Override
chris@3:   public void processLine(NNTPConnection conn, final String line, byte[] raw)
chris@3:     throws IOException, StorageBackendException
chris@1:   {
chris@1:     final String[] command = line.split(" ");
chris@1: 
chris@1:     Article article = null;
chris@1:     if(command.length == 1)
chris@1:     {
chris@3:       article = conn.getCurrentArticle();
chris@1:       if(article == null)
chris@1:       {
chris@3:         conn.println("420 no current article has been selected");
chris@1:         return;
chris@1:       }
chris@1:     }
chris@1:     else if(command[1].matches(NNTPConnection.MESSAGE_ID_PATTERN))
chris@1:     {
chris@1:       // Message-ID
chris@1:       article = Article.getByMessageID(command[1]);
chris@1:       if (article == null)
chris@1:       {
chris@3:         conn.println("430 no such article found");
chris@1:         return;
chris@1:       }
chris@1:     }
chris@1:     else
chris@1:     {
chris@1:       // Message Number
chris@1:       try
chris@1:       {
chris@1:         long aid = Long.parseLong(command[1]);
chris@3:         article = conn.getCurrentChannel().getArticle(aid);
chris@1:       }
chris@1:       catch(NumberFormatException ex)
chris@1:       {
chris@1:         ex.printStackTrace();
chris@1:       }
chris@3:       catch(StorageBackendException ex)
chris@1:       {
chris@1:         ex.printStackTrace();
chris@1:       }
chris@1:       if (article == null)
chris@1:       {
chris@3:         conn.println("423 no such article number in this group");
chris@1:         return;
chris@1:       }
chris@3:       conn.setCurrentArticle(article);
chris@1:     }
chris@1:     
chris@3:     conn.println("223 " + conn.getCurrentChannel().getIndexOf(article) + " "
chris@3:       + article.getMessageID()
chris@3:       + " article retrieved - request text separately");
chris@1:   }
chris@1:   
chris@1: }