import java.awt.*;
import java.awt.event.*;

/**
 * This class provides the user interface and control for the game Othello.
 * 
 * @Hal Perkins, Robert Carr 
 * @version August 5, 2001
 */
public class Othello extends Panel {
    // game instance variables
    private Board board;        // game board

    // GUI components
    private Label blackScore;           // black and white scores
    private Label whiteScore;
    private Label turn;                 // Turn indicator
    private Button resetButton;         // reset control
    private Square[][] squares;         // board squares for display

    /** Construct new Othello game */
    public Othello()    {
        // create and initialize game board and display representation
        this.board = new Board(this);
        this.squares = new Square[Board.NROWSCOLS][Board.NROWSCOLS];

        // set layout for game display
        this.setLayout(new BorderLayout());
        
        // Set up panel containing scores
        Panel infoPanel = new Panel();
        infoPanel.setLayout(new GridLayout(1,3));

        this.blackScore = new Label("black: " , Label.LEFT);
        this.whiteScore = new Label("white: " , Label.RIGHT);
        this.turn = new Label("current turn: ", Label.CENTER);

        infoPanel.add(this.blackScore);
        infoPanel.add(this.turn);
        infoPanel.add(this.whiteScore);

        this.add(infoPanel, BorderLayout.NORTH);

        // Create board squares and add to display
        Panel boardPanel = new Panel();
        boardPanel.setLayout(new GridLayout(Board.NROWSCOLS,Board.NROWSCOLS));
        for (int row = 0; row < Board.NROWSCOLS; row++) {
            for (int col = 0; col < Board.NROWSCOLS; col++) {
                squares[row][col] = new Square(Board.EMPTY, row, col, this.board);
                boardPanel.add(squares[row][col]);
           }
        }
        this.add(boardPanel, BorderLayout.CENTER);


        // Set up reset button so it starts new game when clicked
        resetButton = new Button("new game");
        resetButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                board.newGame();
                updateDisplay();
                repaint();
            }
        });
        this.add(resetButton, BorderLayout.SOUTH);


        // show initial display
        this.updateDisplay();
    }

    // Update display to match game state.
    public void updateDisplay() {
        // update scores
        this.whiteScore.setText("white: " + this.board.getWhiteScore());
        this.blackScore.setText("black: " + this.board.getBlackScore());
        String currentTurn = "current turn: ";
        if (this.board.getCurrentColor() == Board.WHITE) {
            currentTurn = currentTurn + "WHITE";
        } else {
            currentTurn = currentTurn + "BLACK";
        }
        this.turn.setText(currentTurn);

        // update board display
        for (int row = 0; row < Board.NROWSCOLS; row++) {
            for (int col = 0; col < Board.NROWSCOLS; col++) {
                this.squares[row][col].setState(this.board.getSquare(row,col));
            }
        }
        this.repaint();
    }
        
    /** Create new game and a window to display it */
    public static void main(String[] args) {
        Frame f = new Frame("Othello");     // top-level window
        Othello o = new Othello();
        f.add(o);
        f.addWindowListener( new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });

        f.setSize(400,400);
        f.show();
    }

}