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;

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

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

	private void initGameMenu() {
		JMenu		gameMenu		= new JMenu("Game");
		JMenuItem	newGameMenuItem	= new JMenuItem("New Game");
		newGameMenuItem.addActionListener((evt) -> {
			GameConfigurationDialog.show((whiteName, blackName) -> {
				GamePane	gamePane	= mainWindow.addGamePane();
				Game		game		= new Game(gamePane.getBoardPane(), whiteName, blackName);
				gamePane.setGame(game);
				game.start();
			});
		});
		gameMenu.add(newGameMenuItem);
		add(gameMenu);
		newGameMenuItem.doClick();
	}

	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) -> {
			final String fen = mainWindow.getSelectedGamePane().getGame().getBoard().toFEN();
			Toolkit.getDefaultToolkit().getSystemClipboard().setContents(new StringSelection(fen), null);
			JOptionPane.showMessageDialog(mainWindow, String.format("FEN-string copied to clipboard!%n%s", fen));
		});
		toolsMenu.add(exportFENMenuItem);

		JMenuItem loadFromFENMenuItem = new JMenuItem("Load board from FEN");
		loadFromFENMenuItem.addActionListener((evt) -> {
			final GamePane	gamePane	= mainWindow.addGamePane();
			final String	fen			= JOptionPane.showInputDialog("Enter a FEN string: ");
			GameConfigurationDialog.show((whiteName, blackName) -> {
				final Game game = new Game(gamePane.getBoardPane(), whiteName, blackName, fen);
				gamePane.setGame(game);
				game.start();
			});
		});
		toolsMenu.add(loadFromFENMenuItem);

		add(toolsMenu);
	}
}