/*

 *   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.nio.charset.Charset;

import java.sql.SQLException;

import org.sonews.daemon.NNTPConnection;

import org.sonews.daemon.storage.Article;

import org.sonews.daemon.storage.Group;

/**

 * Base class for all command handling classes.

 * @author Christian Lins

 * @author Dennis Schwerdel

 * @since n3tpd/0.1

 */

public abstract class AbstractCommand

{

  protected NNTPConnection connection;

  public AbstractCommand(final NNTPConnection connection)

  {

    this.connection = connection;

  }

  protected Article getCurrentArticle()

  {

    return connection.getCurrentArticle();

  }

  protected Group getCurrentGroup()

  {

    return connection.getCurrentGroup();

  }

  protected void setCurrentArticle(final Article current)

  {

    connection.setCurrentArticle(current);

  }

  protected void setCurrentGroup(final Group current)

  {

    connection.setCurrentGroup(current);

  }

  public abstract void processLine(String line)

    throws IOException, SQLException;

  protected void println(final String line)

    throws IOException

  {

    connection.println(line);

  }

  protected void println(final String line, final Charset charset)

    throws IOException

  {

    connection.println(line, charset);

  }

  protected void printStatus(final int status, final String msg)

    throws IOException

  {

    println(status + " " + msg);

  }

  public abstract boolean hasFinished();

}