package dev.kske.chess.ui;

import java.awt.Component;
import java.awt.Font;
import java.io.File;
import java.util.*;
import java.util.function.BiConsumer;
import java.util.function.Consumer;
import java.util.prefs.Preferences;

import javax.swing.*;
import javax.swing.filechooser.FileNameExtensionFilter;

import dev.kske.chess.io.EngineUtil;

/**
 * Project: <strong>Chess</strong><br>
 * File: <strong>DialogUtil.java</strong><br>
 * Created: <strong>24.07.2019</strong><br>
 *
 * @since Chess v0.3-alpha
 * @author Kai S. K. Engelbart
 */
public class DialogUtil {

	private DialogUtil() {}

	/**
	 * Saves the last accessed folder for loading and saving game files.
	 */
	private static Preferences preferences
		= Preferences.userNodeForPackage(DialogUtil.class);

	/**
	 * Displays a parameterized file opening dialog.
	 *
	 * @param parent  the parent component of the dialog
	 * @param action  the action executed with the selected files a its argument
	 * @param filters the file extension filters passed to the dialog
	 */
	public static void showFileSelectionDialog(
		Component parent, Consumer<List<File>> action,
		Collection<FileNameExtensionFilter> filters
	) {
		JFileChooser fileChooser = createFileChooser(filters);
		if (fileChooser.showOpenDialog(parent) == JFileChooser.APPROVE_OPTION) {
			action.accept(Arrays.asList(fileChooser.getSelectedFile()));
			preferences.put("path", fileChooser.getSelectedFile().getParent());
		}
	}

	/**
	 * Displays a parameterized file saving dialog.
	 *
	 * @param parent  the parent component of the dialog
	 * @param action  the action executed with the selected file a its argument
	 * @param filters the file extension filters passed to the dialog
	 */
	public static void showFileSaveDialog(
		Component parent, Consumer<File> action,
		Collection<FileNameExtensionFilter> filters
	) {
		JFileChooser fileChooser = createFileChooser(filters);
		if (fileChooser.showSaveDialog(parent) == JFileChooser.APPROVE_OPTION) {
			action.accept(
				new File(
					fileChooser.getSelectedFile().getAbsolutePath() + "."
						+ ((FileNameExtensionFilter) fileChooser
							.getFileFilter()).getExtensions()[0]
				)
			);
			preferences.put("path", fileChooser.getSelectedFile().getParent());
		}
	}

	private static JFileChooser
		createFileChooser(Collection<FileNameExtensionFilter> filters) {
		JFileChooser fileChooser = new JFileChooser();
		fileChooser.setCurrentDirectory(
			new File(preferences.get("path", System.getProperty("user.home")))
		);
		fileChooser.setAcceptAllFileFilterUsed(false);
		filters.forEach(fileChooser::addChoosableFileFilter);
		return fileChooser;
	}

	/**
	 * Displays a dialog in which the user can select the player types for a
	 * game.<br>
	 * <br>
	 * The dialog will always display {@code Natural Player} and
	 * {@code AIPlayer},
	 * as well as all engine names stored by {@link EngineUtil}.
	 *
	 * @param parent the parent component of the dialog
	 * @param action the action executed with the two selected names as
	 *               arguments
	 */
	public static void showGameConfigurationDialog(
		Component parent, BiConsumer<String, String> action
	) {
		JPanel dialogPanel = new JPanel();

		List<String> options
			= new ArrayList<>(Arrays.asList("Natural Player", "AI Player"));
		EngineUtil.getEngineInfos().forEach(info -> options.add(info.name));

		JLabel lblWhite = new JLabel("White:");
		lblWhite.setFont(new Font("Tahoma", Font.PLAIN, 14));
		lblWhite.setBounds(10, 11, 49, 14);
		dialogPanel.add(lblWhite);

		JComboBox<Object> cbWhite = new JComboBox<>();
		cbWhite.setModel(new DefaultComboBoxModel<>(options.toArray()));
		cbWhite.setBounds(98, 9, 159, 22);
		dialogPanel.add(cbWhite);

		JLabel lblBlack = new JLabel("Black:");
		lblBlack.setFont(new Font("Tahoma", Font.PLAIN, 14));
		lblBlack.setBounds(10, 38, 49, 14);
		dialogPanel.add(lblBlack);

		JComboBox<Object> cbBlack = new JComboBox<>();
		cbBlack.setModel(new DefaultComboBoxModel<>(options.toArray()));
		cbBlack.setBounds(98, 36, 159, 22);
		dialogPanel.add(cbBlack);

		JOptionPane.showMessageDialog(
			parent,
			dialogPanel,
			"Game configuration",
			JOptionPane.QUESTION_MESSAGE
		);
		action.accept(
			options.get(cbWhite.getSelectedIndex()),
			options.get(cbBlack.getSelectedIndex())
		);
	}
}