/*
    GNU GENERAL PUBLIC LICENSE
    Copyright (C) 2006 The Lobo Project

    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
    verion 2 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 library; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Contact info: lobochief@users.sourceforge.net
 */
/*
 * Created on Jul 9, 2005
 */
package org.lobobrowser.request;

import java.net.Authenticator;
import java.net.PasswordAuthentication;

import org.lobobrowser.gui.AuthenticationDialog;
import org.lobobrowser.settings.AssociatedSettings;
import org.lobobrowser.settings.ConnectionSettings;
import org.lobobrowser.util.gui.GUITasks;

public class AuthenticatorImpl extends Authenticator {
  private final ConnectionSettings connectionSettings;
  private final AssociatedSettings associatedSettings;

  public AuthenticatorImpl() {
    super();
    // This is one way to avoid potential security exceptions.
    this.connectionSettings = ConnectionSettings.getInstance();
    this.associatedSettings = AssociatedSettings.getInstance();
  }

  /*
   * (non-Javadoc)
   *
   * @see java.net.Authenticator#getPasswordAuthentication()
   */
  @Override
  protected PasswordAuthentication getPasswordAuthentication() {
    final RequestorType requestorType = this.getRequestorType();
    if (requestorType == RequestorType.PROXY) {
      try {
        final PasswordAuthentication pa = this.connectionSettings.getPasswordAuthentication();
        if (pa != null) {
          // This could get it into an infinite loop if the credentials are
          // wrong?
          // Apparently there's a limit of 20 for retries. See bug #4848752 in
          // the bug parade.
          return pa;
        }
      } catch (final Exception err) {
        throw new IllegalStateException(err);
      }
    }

    final AssociatedSettings settings = this.associatedSettings;
    final String userName = settings.getUserNameForHost(this.getRequestingHost());

    final java.awt.Frame frame = GUITasks.getTopFrame();
    final AuthenticationDialog dialog = new AuthenticationDialog(frame);
    if (userName != null) {
      dialog.setUserName(userName);
    }
    dialog.setModal(true);
    dialog.setTitle("Authentication Required");
    dialog.pack();
    dialog.setLocationByPlatform(true);
    dialog.setVisible(true);
    final PasswordAuthentication pa = dialog.getAuthentication();
    if (pa != null) {
      settings.setUserNameForHost(this.getRequestingHost(), pa.getUserName());
      settings.save();
    }
    return pa;
  }
}