/*
    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.io.Serializable;

import javax.swing.*;

import de.itsblue.ConnectFour.Plate.PlateType;
import de.itsblue.ConnectFour.player.Player;
import de.itsblue.ConnectFour.player.*;

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

    private GameBoard gameBoard;

    private ButtonRow buttonRow;

    private int player = 0;

    private Player players[] = new Player[2];

    private GameType gameType;

    enum GameType {
        Local,
        RemoteServer,
        RemoteClient
    }

    /**
     * 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());

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

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

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

    public void startNewGame(GameType type) {
        this.gameType = type;
        switch (type) {
            case Local: {
                this.players[0] = new LocalPlayer(this.buttonRow, PlateType.O);
                this.players[0].addMoveListener(this);
                this.players[1] = new LocalPlayer(this.buttonRow, PlateType.X);
                this.players[1].addMoveListener(this);
        
                this.player = 0;
                this.players[player].setIsMyTurn(true);
                break;
            }

            case RemoteClient: {
                this.players[0] = new LocalPlayer(this.buttonRow, null);
                this.players[1] = new RemotePlayerClient(this.buttonRow, "localhost", this.players[0]);
                
                this.players[0].addMoveListener(this);
                this.players[1].addMoveListener(this);
        
                break;
            }

            case RemoteServer: {
                this.players[0] = new LocalPlayer(this.buttonRow, PlateType.O);
                this.players[1] = new RemotePlayerServer(this.buttonRow, PlateType.X, this.players[0]);

                this.players[0].addMoveListener(this);
                this.players[1].addMoveListener(this);
        
                this.player = 0;
                this.players[player].setIsMyTurn(true);
                this.players[1].setIsMyTurn(false);

                break;
            }
        }
    }

    /**
     * Function to switch the player
     */
    private void switchPlayer() {
        this.players[player].setIsMyTurn(false);

        if (player == 0) {
            player = 1;
        }
        else{
            player = 0;
        }

        this.players[player].setIsMyTurn(true);
    }

    /**
     * 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;
    }

    /**
     * Catch player moves
     */
    @Override
    public void movePerformed(int column, Player src) {
        if(this.players[this.player].equals(src) || this.gameType == GameType.RemoteClient) {
            String res;

            res = this.gameBoard.insertPlate(new Plate(src.usingPlateType), 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);
            }
            
            if(this.gameType != GameType.RemoteClient)
            switchPlayer();
        }
    }

    /**
     * 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();
    }

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

        System.out.println("argc: " + args.length);
        System.out.println("args[0]: " + args[0]);

        if(args.length <= 0)
        game.startNewGame(GameType.Local);
        else if(args[0].equals("server"))
        game.startNewGame(GameType.RemoteServer);
        else if(args[0].equals("client"))
        game.startNewGame(GameType.RemoteClient);
        else 
        System.out.println("Usage: java ConnectFour.java [server|client]");
    }
}