package dev.kske.chess.ui;

import java.awt.Toolkit;
import java.awt.datatransfer.StringSelection;

import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;

import dev.kske.chess.game.Game;

/**
 * Project: <strong>Chess</strong><br>
 * File: <strong>MenuBar.java</strong><br>
 * Created: <strong>16.07.2019</strong><br>
 * Author: <strong>Kai S. K. Engelbart</strong>
 */
public class MenuBar extends JMenuBar {

	private static final long serialVersionUID = -7221583703531248228L;

	private final MainWindow	mainWindow;
	private final BoardPane		boardPane;

	public MenuBar(MainWindow mainWindow) {
		this.mainWindow	= mainWindow;
		boardPane		= mainWindow.getBoardPane();

		initGameMenu();
		initEngineMenu();
		initToolsMenu();
	}

	private void initGameMenu() {
		JMenu		gameMenu		= new JMenu("Game");
		JMenuItem	newGameMenuItem	= new JMenuItem("New Game");
		newGameMenuItem.addActionListener((evt) -> {
			GameConfigurationDialog dialog = new GameConfigurationDialog();
			dialog.setVisible(true);
			if (dialog.isStartGame()) startGame(new Game(boardPane, dialog.getWhiteName(), dialog.getBlackName()));
		});
		gameMenu.add(newGameMenuItem);

		add(gameMenu);

		// Start a game
		startGame(new Game(boardPane, "Natural Player", "Natural Player"));
	}

	private void initEngineMenu() {
		JMenu engineMenu = new JMenu("Engine");

		JMenuItem addEngineMenuItem = new JMenuItem("Add engine");
		addEngineMenuItem.addActionListener((evt) -> {
			String enginePath = JOptionPane.showInputDialog(getParent(),
					"Enter the path to a UCI-compatible chess engine:",
					"Engine selection",
					JOptionPane.QUESTION_MESSAGE);
			if (enginePath != null) EngineUtil.addEngine(enginePath);
		});

		JMenuItem showInfoMenuItem = new JMenuItem("Show engine info");

		engineMenu.add(addEngineMenuItem);
		engineMenu.add(showInfoMenuItem);
		add(engineMenu);
	}

	private void initToolsMenu() {
		JMenu toolsMenu = new JMenu("Tools");

		JMenuItem exportFENMenuItem = new JMenuItem("Export board to FEN");
		exportFENMenuItem.addActionListener((evt) -> Toolkit.getDefaultToolkit()
			.getSystemClipboard()
			.setContents(new StringSelection(mainWindow.getGame().getBoard().toFEN()), null));
		toolsMenu.add(exportFENMenuItem);

		add(toolsMenu);
	}

	private void startGame(Game game) {
		mainWindow.setGame(game);

		// Update board and board component
		game.reset();
		game.start();
	}
}