package org.openslx.dozmod.gui.window;

import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;

import org.apache.log4j.Logger;
import org.openslx.dozmod.Config;
import org.openslx.dozmod.gui.Gui;
import org.openslx.dozmod.gui.helper.MessageType;
import org.openslx.dozmod.gui.helper.UiFeedback;
import org.openslx.dozmod.gui.window.layout.DisclaimerWindowLayout;

/**
 * Window for showing the disclaimer.
 */
@SuppressWarnings("serial")
public class DisclaimerWindow extends DisclaimerWindowLayout implements UiFeedback {

	/**
	 * Use a version number for the disclaimer. Whenever we add/change
	 * something, this will be increased
	 */
	public static final int DISCLAIMER_VERSION = 1;

	final DisclaimerWindow me = this;

	private final static Logger LOGGER = Logger.getLogger(DisclaimerWindow.class);

	public DisclaimerWindow(Frame modalParent) {
		super(modalParent);
		setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);

		// agree box toggles the "Continue" button
		chkAgreeBox.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				btnContinue.setEnabled(chkAgreeBox.isSelected());
			}
		});

		// function for continue button
		btnContinue.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				// save the agreement to config
				Config.setDisclaimerAgreement(DISCLAIMER_VERSION);
				me.dispose();
			}
		});

		addWindowListener(new WindowAdapter() {
			@Override
			public void windowClosing(WindowEvent e) {
				closeWindow();
			}
		});
		if (!shouldBeShown()) {
			chkAgreeBox.setVisible(false);
			btnContinue.setText("Schließen");
			btnContinue.setEnabled(true);
		}
	}

	public static boolean shouldBeShown() {
		return Config.getDisclaimerAgreement() < DISCLAIMER_VERSION;
	}

	public static void open(Frame modalParent) {
		new DisclaimerWindow(modalParent).setVisible(true);
	}

	@Override
	public boolean wantConfirmQuit() {
		return true;
	}

	@Override
	public void escapePressed() {
		closeWindow();
	}

	/**
	 * Check, whether to ask for confirmation, when disclaimer hasn't been
	 * accepted or just close.
	 */
	private void closeWindow() {
		if (shouldBeShown()) {
			if (Gui.showMessageBox(me,
					"Wenn diesen rechtlichen Hinweis nicht akzeptieren, können Sie die Software nicht verwenden! "
							+ "Sind Sie sicher, dass sie abbrechen wollen?", MessageType.QUESTION_YESNO,
					LOGGER, null)) {
				System.exit(ABORT);
			}
		} else {
			me.dispose();
		}
	}

}