package dev.kske.chess.ui;

import java.awt.BorderLayout;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.border.EmptyBorder;
import javax.swing.table.DefaultTableModel;

import dev.kske.chess.board.Log;
import dev.kske.chess.board.Log.MoveNode;
import dev.kske.chess.event.Event;
import dev.kske.chess.event.EventBus;
import dev.kske.chess.event.MoveEvent;
import dev.kske.chess.event.Subscribable;

/**
 * Project: <strong>Chess</strong><br>
 * File: <strong>LogPanel.java</strong><br>
 * Created: <strong>17.07.2019</strong><br>
 * Author: <strong>Kai S. K. Engelbart</strong>
 */
public class LogPanel extends JPanel implements Subscribable {

	private static final long serialVersionUID = 1932671698254197119L;

	private JTable	mtable;

	private Log log;

	/**
	 * Create the frame.
	 */
	public LogPanel() {
		setBorder(new EmptyBorder(5, 5, 5, 5));
		setLayout(new BorderLayout(0, 0));

		mtable = new JTable();
		mtable.setEnabled(false);
		add(new JScrollPane(mtable), BorderLayout.CENTER);

		EventBus.getInstance().register(this);
	}

	@Override
	public Set<Class<?>> supports() {
		return new HashSet<>(Arrays.asList(MoveEvent.class));
	}

	@Override
	public void handle(Event<?> event) {
		if (log == null) return;

		// TODO: Display log with variations
		final List<MoveNode>	moves	= /* log.getLoggedMoves() */ new ArrayList<>();
		String[][]				data	= new String[moves.size() / 2 + moves.size() % 2][2];
		for (int i = 0; i < data.length; i++) {
			data[i][0] = moves.get(i * 2).move.toSAN();
			if (i * 2 + 1 < moves.size()) data[i][1] = moves.get(i * 2 + 1).move.toSAN();
		}
		mtable.setModel(new DefaultTableModel(data, new String[] { "White", "Black" }));
	}

	public Log getLog() { return log; }

	public void setLog(Log log) {
		this.log = log;
		handle(null);
	}
}