/*
    * Copyright (C) 2014 Cristian Sulea ( http://cristian.sulea.net )
    * 
    * This program is free software: you can redistribute it and/or modify
    * it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
   * 
   * You should have received a copy of the GNU Lesser General Public License
   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  
  package jatoo.exec.remote;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  import com.jcraft.jsch.UserInfo;
  
  /**
   * Simple implementation for {@link UserInfo}.
   * 
   * @author <a href="http://cristian.sulea.net" rel="author">Cristian Sulea</a>
   * @version 1.2, July 24, 2014
   */
  public final class RemoteCommandExecutorJCraftUserInfo implements UserInfo {
  
    /** The logger. */
    private final Log logger = LogFactory.getLog(RemoteCommandExecutorJCraftUserInfo.class);
  
    private final String password;
  
    private boolean isAlreadyPrompted = false;
  
    public RemoteCommandExecutorJCraftUserInfo(final String password) {
      this.password = password;
    }
  
    @Override
    public boolean promptPassword(final String message) {
  
      if (isAlreadyPrompted) {
        logger.error("Something went wrong, we are prompted again for passwordat. Maybe wrong password?");
        throw new RuntimeException("Wrong password?");
      }
  
      isAlreadyPrompted = true;
  
      logger.info(message);
      logger.info("No need to prompt for password, the password was passed through constructor.");
      return true;
    }
  
    @Override
    public String getPassword() {
      return password;
    }
  
    @Override
    public boolean promptYesNo(final String message) {
      logger.info(message);
      logger.info("Auto accepting the fingerprint, because I was told to do so.");
      return true;
    }
  
    @Override
    public void showMessage(final String message) {
      logger.info(message);
    }
  
    @Override
    public boolean promptPassphrase(final String message) {
      logger.info(message);
      logger.info("No need to prompt for passphrase, the method #getPassphrase() will always return null.");
      return true;
    }
  
    @Override
    public String getPassphrase() {
      return null;
    }
  
  }