/*
 * Copyright (C) 2016 Didier Clermonté <dclermonte@april.org>
 * Copyright (C) 2016 Christian Pierre Momon <christian.momon@devinsy.fr>
 *
 * This file is part of Siba.
 *
 * Siba is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.dclermonte.siba.gui;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Font;
import java.awt.Point;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.io.File;
import java.io.IOException;
import java.util.Locale;
import java.util.ResourceBundle;

import javax.swing.ImageIcon;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JSeparator;
import javax.swing.JTabbedPane;
import javax.swing.SwingConstants;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;

import org.apache.commons.lang3.StringUtils;
import org.dclermonte.siba.SibaException;
import org.dclermonte.siba.gui.utils.GUIToolBox;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * The main class for GUI (Graphical User Interface )
 *
 * @author dclermonte
 *
 */
public class SibaGUI
{
	private static final ResourceBundle BUNDLE = ResourceBundle.getBundle("org.dclermonte.siba.gui.messages"); //$NON-NLS-1$
	public static Logger logger = LoggerFactory.getLogger(SibaGUI.class);
	private JFrame frmSimpleBackup;

	/**
	 * Launch the application.
	 */

	private BackupPanel backupPanel;
	private CheckPanel checkPanel;

	/**
	 * This is the constructor of this application.
	 *
	 * @throws UnsupportedLookAndFeelException
	 * @throws IllegalAccessException
	 * @throws InstantiationException
	 * @throws ClassNotFoundException
	 */
	public SibaGUI() throws ClassNotFoundException, InstantiationException, IllegalAccessException,
			UnsupportedLookAndFeelException, SibaException
	{
		final Locale locale;
		// Set default GUI catch.
		Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler()
		{
			@Override
			public void uncaughtException(final Thread thread, final Throwable exception)
			{
				String message;
				if (exception instanceof OutOfMemoryError)
				{
					message = "Java ran out of memory!\n\n";
				}
				else
				{
					message = "An error occured: " + exception.getClass() + "(" + exception.getMessage() + ")";
				}

				JOptionPane.showMessageDialog(SibaGUI.this.frmSimpleBackup, message, "Error",
						JOptionPane.ERROR_MESSAGE);
				logger.error("uncaughtException ", exception);
			}
		});

		// Remove BOLD on default font.
		UIManager.put("swing.boldMetal", Boolean.FALSE);

		// Set LookAndFeel.
		logger.debug("System lookAndFeel property: {}", System.getProperty("swing.defaultlaf"));
		logger.debug("Available lookAndFeel: {} ", GUIToolBox.availableLookAndFeels().toString());
		logger.debug("System lookAndFeel: {} ", UIManager.getSystemLookAndFeelClassName());
		logger.debug("Current lookAndFeel: {} ", UIManager.getLookAndFeel().getName());

		if (!StringUtils.equals(UIManager.getSystemLookAndFeelClassName(), "javax.swing.plaf.metal.MetalLookAndFeel"))
		{
			try
			{
				logger.debug("Metal LAF setted and system LAF detected, try to set system LAF.");
				UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
			}
			catch (final Exception exception)
			{
				logger.debug("Failed to set the system LookAndFeel.");
			}
		}
		else if (GUIToolBox.availableLookAndFeels().toString().contains("GTK+"))
		{
			try
			{
				logger.debug("Metal LAF setted and GTK+ LAF detected, try to set GTK+ LAF.");
				UIManager.setLookAndFeel("com.sun.java.swing.plaf.gtk.GTKLookAndFeel");
			}
			catch (final Exception exception)
			{
				logger.debug("Failed to set the system LookAndFeel.");
			}
		}
		logger.debug("Activated lookAndFeel: {} ", UIManager.getLookAndFeel().getName());

		// Set default locale.
		locale = Locale.getDefault();
		updateLanguage(locale);
		logger.debug(locale.getDisplayLanguage());
		initialize();

	}

	/**
	 * Initialize the contents of the frame.
	 *
	 * @throws SibaException
	 */
	private void initialize() throws SibaException
	{
		this.frmSimpleBackup = new JFrame();
		this.frmSimpleBackup.setIconImage(Toolkit.getDefaultToolkit()
				.getImage(SibaGUI.class.getResource("/org/dclermonte/siba/gui/SibaLogo.png")));
		this.frmSimpleBackup.getContentPane().setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
		this.frmSimpleBackup.setMinimumSize(new Dimension(600, 400));
		this.frmSimpleBackup.getContentPane().setBackground(Color.GREEN);

		JTabbedPane tabbedPane = new JTabbedPane(JTabbedPane.TOP);
		tabbedPane.setBackground(Color.GREEN);
		tabbedPane.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
		this.frmSimpleBackup.getContentPane().add(tabbedPane, BorderLayout.CENTER);

		this.backupPanel = new BackupPanel();
		this.backupPanel.setBackground(new Color(0, 255, 0));
		tabbedPane.addTab(BUNDLE.getString("BackupPanel.TitleBackupPanel.text"), //$NON-NLS-1$
				new ImageIcon(SibaGUI.class.getResource("/org/dclermonte/siba/gui/SibaLogo.png")), this.backupPanel,
				null);
		this.checkPanel = new CheckPanel();
		this.checkPanel.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
		this.checkPanel.setBackground(new Color(144, 238, 144));
		tabbedPane.addTab(BUNDLE.getString("BackupPanel.TitleCheckPanel.text"), //$NON-NLS-1$
				new ImageIcon(SibaGUI.class.getResource("/org/dclermonte/siba/gui/SibaLogo.png")), this.checkPanel,
				null);
		this.frmSimpleBackup.setFont(new Font("DejaVu Sans", Font.BOLD, 12));
		this.frmSimpleBackup.setForeground(new Color(0, 100, 0));
		this.frmSimpleBackup.setBackground(new Color(102, 205, 170));
		this.frmSimpleBackup.setTitle("Simple Backup");
		this.frmSimpleBackup.setBounds(100, 100, 450, 300);
		this.frmSimpleBackup.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		JMenuBar menuBar = new JMenuBar();
		menuBar.setBackground(Color.GREEN);
		this.frmSimpleBackup.setJMenuBar(menuBar);

		JMenu mnFile = new JMenu(BUNDLE.getString("SibaGUI.mnFile.text")); //$NON-NLS-1$
		mnFile.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
		mnFile.setBackground(Color.GREEN);
		mnFile.setMnemonic('F');
		mnFile.setForeground(Color.BLACK);
		menuBar.add(mnFile);

		JMenuItem mntmBackup = new JMenuItem(BUNDLE.getString("SibaGUI.mntmBackup.text")); //$NON-NLS-1$
		mntmBackup.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
		mntmBackup.setBackground(Color.GREEN);
		mntmBackup.addActionListener(new ActionListener()
		{
			@Override
			public void actionPerformed(final ActionEvent e)
			{
				tabbedPane.setSelectedIndex(0);
				File file = SourceDirectorySelector.showSelectorDialog(SibaGUI.this.backupPanel, null);
				if (file != null)
				{
					SibaGUI.this.backupPanel.setSourceDirectory(file.getPath());
				}
			}
		});
		mnFile.add(mntmBackup);

		JMenuItem mntmCheck = new JMenuItem(BUNDLE.getString("SibaGUI.mntmCheck.text")); //$NON-NLS-1$
		mntmCheck.setBackground(Color.GREEN);
		mntmCheck.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
		mntmCheck.addActionListener(new ActionListener()
		{
			@Override
			public void actionPerformed(final ActionEvent e)
			{
				tabbedPane.setSelectedIndex(1);
				File choosenFile = CheckDirectorySelector.showSelectorDialog(SibaGUI.this.checkPanel, null);
				if ((choosenFile != null) && choosenFile.exists())
				{
					SibaGUI.this.checkPanel.setFileToCheck(choosenFile.getAbsolutePath());
				}
			}
		});
		mnFile.add(mntmCheck);

		JMenuItem mntmQuit = new JMenuItem(BUNDLE.getString("SibaGUI.mntmQuit.text")); //$NON-NLS-1$
		mntmQuit.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
		mntmQuit.setBackground(Color.GREEN);
		mntmQuit.setMnemonic(KeyEvent.VK_Q);
		mntmQuit.addActionListener(new ActionListener()
		{
			@Override
			public void actionPerformed(final ActionEvent arg0)
			{
				SibaGUI.this.frmSimpleBackup.dispose();
			}
		});

		JSeparator separator = new JSeparator();
		mnFile.add(separator);
		mnFile.add(mntmQuit);

		JMenu mnNewMenu = new JMenu(BUNDLE.getString("SibaGUI.mnNewMenu.text")); //$NON-NLS-1$
		mnNewMenu.setMnemonic('H');
		mnNewMenu.setLocation(new Point(500, 0));
		mnNewMenu.setHorizontalTextPosition(SwingConstants.RIGHT);
		mnNewMenu.setHorizontalAlignment(SwingConstants.RIGHT);
		mnNewMenu.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
		mnNewMenu.setForeground(new Color(0, 0, 0));
		mnNewMenu.setBackground(Color.GREEN);
		mnNewMenu.setOpaque(true);
		menuBar.add(mnNewMenu);

		JMenuItem mntmMenuItemAbout = new JMenuItem(BUNDLE.getString("SibaGUI.mntmNewMenuItem_2.text")); //$NON-NLS-1$
		mntmMenuItemAbout.setBackground(Color.GREEN);
		mntmMenuItemAbout.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
		mntmMenuItemAbout.addActionListener(new ActionListener()
		{
			@Override
			public void actionPerformed(final ActionEvent e)
			{
				AboutDialog dialog;
				try
				{
					dialog = new AboutDialog();
					dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
					dialog.setVisible(true);
				}
				catch (IOException exception)
				{
					logger.error("Exception ", exception);
				}

			}
		});
		mnNewMenu.add(mntmMenuItemAbout);
	}

	/**
	 * This method launch the GUI.
	 */
	public static void run()
	{
		EventQueue.invokeLater(new Runnable()
		{
			@Override
			public void run()
			{
				try
				{
					SibaGUI window = new SibaGUI();
					window.frmSimpleBackup.setVisible(true);
				}
				catch (SibaException exception)
				{
					logger.error("SibaException ", exception);
					String dataMissing = exception.getMessage();
					String titleWarning = BUNDLE.getString("BackupPanel.TitleWarning.text");
					JOptionPane.showMessageDialog(null, dataMissing, titleWarning, JOptionPane.INFORMATION_MESSAGE);
				}
				catch (Exception exception)
				{
					logger.error("Exception ", exception);
				}
			}
		});
	}

	/**
	 * This method set the local language.
	 */
	public static void updateLanguage(final Locale source)
	{
		// Change JVM default locale.
		java.util.Locale.setDefault(source);

		// Change LookAndFeel default locale.
		javax.swing.UIManager.getDefaults().setDefaultLocale(source);

		// Change new component default locale.
		javax.swing.JComponent.setDefaultLocale(source);

		//
		ResourceBundle.clearCache();
	}

}