/*
 * $Id$
 *
 * Copyright (c) 2005 by Rodney Kinney
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License (LGPL) as published by the Free Software Foundation.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, copies are available
 * at http://www.opensource.org.
 */
package VASSAL.configure;

import java.awt.Frame;
import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;

import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JOptionPane;

import VASSAL.build.GameModule;
import VASSAL.build.module.documentation.HelpFile;
import VASSAL.tools.ErrorDialog;
import VASSAL.tools.ZipUpdater;
import VASSAL.tools.filechooser.FileChooser;

public class ModuleUpdaterDialog extends JDialog {
  private static final long serialVersionUID = 1L;

  public ModuleUpdaterDialog(Frame owner) throws HeadlessException {
    super(owner, false);
    setTitle("Module Updater");
    setLayout(new BoxLayout(getContentPane(), BoxLayout.Y_AXIS));
    final FileConfigurer fileConfig =
      new FileConfigurer(null, "File containing older version:  ");
    add(fileConfig.getControls());

    Box b = Box.createHorizontalBox();

    final JButton saveButton = new JButton("Create Updater");
    saveButton.setEnabled(false);
    fileConfig.addPropertyChangeListener(new PropertyChangeListener() {
      public void propertyChange(PropertyChangeEvent evt) {
        saveButton.setEnabled(fileConfig.getValue() != null);
      }
    });
    saveButton.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        final FileChooser fc = GameModule.getGameModule().getFileChooser();
        if (fc.showSaveDialog(getOwner()) != FileChooser.APPROVE_OPTION)
          return;

        final File output = fc.getSelectedFile();
        ZipUpdater updater = null;
        try {
          updater = new ZipUpdater((File) fileConfig.getValue());
          updater.createUpdater(
            new File(GameModule.getGameModule().getArchiveWriter().getName()),
            output
          );
        }
        // FIXME: review error message
        catch (IOException e1) {
          String msg = e1.getMessage();
          if (msg == null) {
            msg = "Unable to create updater.";
          }
          JOptionPane.showMessageDialog(ModuleUpdaterDialog.this, msg,
            "Error writing updater", JOptionPane.ERROR_MESSAGE);
        }
      }
    });

    JButton cancelButton = new JButton("Close");
    cancelButton.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        dispose();
      }
    });
    JButton helpButton = new JButton("Help");
    add(b);
    HelpFile hf = null;
    try {
      hf = new HelpFile(null, new File(new File(
        VASSAL.build.module.Documentation.getDocumentationBaseDir(),
        "ReferenceManual"), "ModuleUpdater.htm"));
    }
    catch (MalformedURLException ex) {
      ErrorDialog.bug(ex);
    }

    helpButton.addActionListener(new ShowHelpAction(hf.getContents(), null));
    b.add(saveButton);
    b.add(helpButton);
    b.add(cancelButton);
    add(b);
    pack();
    setLocationRelativeTo(getOwner());
  }
}