/*
    Connect four - written in java
    Copyright (C) 2020 Oliver Schappacher and Dorian Zedler

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

package de.itsblue.ConnectFour;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

import de.itsblue.ConnectFour.Plate.PlateType;

public class ConnectFour extends JFrame implements ActionListener {
    /**
     *
     */
    private static final long serialVersionUID = 1L;

    private GameBoard gameBoard;

    private ButtonRow buttonRow;

    /**
     * Constructor
     */
    ConnectFour() {
        // initialize window
        this.setDefaultCloseOperation(EXIT_ON_CLOSE);
        this.setTitle("Connect 4");

        this.setPreferredSize(new Dimension(600, 600));

        // initialize layout
        this.getContentPane().setLayout(new GridBagLayout());
        GridBagConstraints c = new GridBagConstraints();

        // initialize GameBoard
        this.gameBoard = new GameBoard();

        // initialize ButtonRow
        this.buttonRow = new ButtonRow(this.gameBoard.getColumns());
        buttonRow.addActionListenerToButtons(this);

        // add components to window
        c.gridy = 0;
        add(buttonRow, c);

        c.gridy = 1;
        this.add(gameBoard, c);

        // finish up
        this.pack();
        this.setVisible(true);

    }

    /**
     * Function to handle the next plate insertion
     * 
     * @param column The column to insert the plate into
     */
    private void insertNextPlate(int column) {
        // TODO: change player everytime
        String res = this.gameBoard.insertPlate(new Plate(PlateType.X), column);

        if (res == "err") {
            // beep in case of error
            Toolkit.getDefaultToolkit().beep();
        } else if (res != "ok" && res != "err") {
            PlateType winnerType = PlateType.valueOf(res);
            System.out.println("A player won: " + winnerType);
        }
    }

    /**
     * Function to check if the window is in landscape or portrait mode
     * 
     * @return <code>true</code> if window is in landscape mode, <code>false</code>
     *         if it is not
     */
    public boolean landscape() {
        return this.getSize().height < this.getSize().width;
    }

    /**
     * Override validate in order to resacle the components when the window is
     * rescaled
     */
    @Override
    public void validate() {
        // determine optimal size for board
        Dimension boardSize = new Dimension();
        boardSize.width = this.landscape() ? this.getSize().height / 2 : this.getSize().width / 2;
        boardSize.height = this.landscape() ? this.getSize().width : this.getSize().height;

        // set board size
        this.gameBoard.setPreferredSize(boardSize);
        // set button row size
        this.buttonRow.setPreferredSize(
                new Dimension(this.gameBoard.getPreferredSize().width, this.gameBoard.getPreferredSize().height / 7));

        // call super
        super.validate();
    }

    /**
     * Catch the actions from the button row
     */
    @Override
    public void actionPerformed(ActionEvent e) {
        if (e.getSource() instanceof PlateInsertButton) {
            // if the action source was a PlateInsertButton
            // -> trigger a plate insertion
            PlateInsertButton source = (PlateInsertButton) e.getSource();
            this.insertNextPlate(source.getIndex());
        }
    }

    public static void main(final String[] args) {
        System.out.println(new ConnectFour());
    }
}