/*

 *   StarOffice 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 com.so.news.command;

import java.io.IOException;

import java.text.SimpleDateFormat;

import java.util.Locale;

import java.util.Map;

import com.so.news.Debug;

import com.so.news.NNTPConnection;

import com.so.news.storage.Article;

/**

 * Class handling the ARTICLE command.

 * @author Christian Lins

 * @author Dennis Schwerdel

 */

public class ArticleCommand extends Command

{

  public ArticleCommand(NNTPConnection connection)

  {

    super(connection);

  }

  public boolean process(String[] command) throws IOException

  {

    String commandName = command[0];

    // untested, RFC977 compliant

    Article article = null;

    if (command.length <= 1)

    {

      article = getCurrentArticle();

      if (article == null)

      {

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

        return true;

      }

    }

    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 true;

      }

    }

    else

    {

      // Message Number

      try

      {

        int num = Integer.parseInt(command[1]);

        article = Article.getByNumberInGroup(connection.getCurrentGroup(), num);

      }

      catch (Exception ex)

      {

        ex.printStackTrace(Debug.getInstance().getStream());

        System.err.println(ex.getLocalizedMessage());

      }

      if (article == null)

      {

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

        return true;

      }

      setCurrentArticle(article);

    }

    if (commandName.equalsIgnoreCase("ARTICLE"))

    {

      printStatus(220, article.getNumberInGroup() + " " + article.getMessageID()

          + " article retrieved - head and body follow");

      Map<String, String> header = article.getHeader();

      for(Map.Entry<String, String> entry : header.entrySet())

      {

        if(entry.getKey().equals("Date"))

        {

          SimpleDateFormat sdf = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss Z", Locale.US);

          printTextPart("Date: " + sdf.format(article.getDate()));

        }

        else

          printTextPart(entry.getKey() + ": " + entry.getValue());

      }

      println("");

      printText(article.getBody());

    }

    else if (commandName.equalsIgnoreCase("HEAD"))

    {

      printStatus(500, "No longer supported! Use XOVER instead.");

      return false;

    }

    else if (commandName.equalsIgnoreCase("BODY"))

    {

      printStatus(222, article.getNumberInGroup() + " " + article.getMessageID()

          + " body");

      printText(article.getBody());

    }

    else if (commandName.equalsIgnoreCase("STAT"))

    {

      printStatus(223, article.getNumberInGroup() + " " + article.getMessageID()

          + " article retrieved - request text separately");

    }

    return true;

  }

}