// UserInterface.java
// Description: User Interface for Terriers and Squirrels
// Author: Chris Wilcox, modifications by Ethan Lambert
// Date: 4/28/2015

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.Image;

import javax.swing.Box;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSplitPane;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.border.LineBorder;

public class UserInterface extends JFrame {

    private static final long serialVersionUID = 1L;

    // User interface
    private JPanel topPanel; // Points area
    private JPanel bottomPanel; // Game area
    private Image squirrel,
                  dog,
                  fence,
                  tree,
                  munch,
                  grass,
                  dog_footprints,
                  squirrel_footprints;
    private JLabel message;
    private JButton buttons[][];
    private Font font;

    // Game related
    private static int counter = 0;
    private char field[][];

    public UserInterface(int height, int width, char[][] field) {

        this.field = field;
        // Look and feel
        try {
            UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
        } catch (Exception e) {
            e.printStackTrace();
        }

        // Setup message
        font = new Font("Arial", Font.PLAIN, 24);
        message = new JLabel("");
        message.setFont(font);
        message.setForeground(new Color(0xFFFFFF));

        // Top panel for message
        topPanel = new JPanel();
        topPanel.add(message);
        topPanel.setBackground(new Color(0x0076A3));

        // Bottom panel for board
        bottomPanel = new JPanel();
        bottomPanel.setLayout(new GridLayout(height, width, 0, 0));
        add(Box.createRigidArea(new Dimension(0, 5)), BorderLayout.NORTH);
        add(bottomPanel, BorderLayout.CENTER);

        // Split panel
        JSplitPane sp = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
        sp.setEnabled(false);
        sp.setDividerSize(0);
        sp.add(topPanel);
        sp.add(bottomPanel);
        add(sp, BorderLayout.CENTER);

        // Load images
        ImageIcon icon0 = new ImageIcon("iconTerrier.png");
        Image image0 = icon0.getImage();
        dog = image0.getScaledInstance(480/width, 480/width, Image.SCALE_DEFAULT);

        ImageIcon icon1 = new ImageIcon("iconSquirrel.png");
        Image image1 = icon1.getImage();
        squirrel = image1.getScaledInstance(480/width, 480/width, Image.SCALE_DEFAULT);

        ImageIcon icon2 = new ImageIcon("iconMunch.png");
        Image image2 = icon2.getImage();
        munch = image2.getScaledInstance(480/width, 480/width, Image.SCALE_DEFAULT);

        ImageIcon icon3 = new ImageIcon("iconFence.png");
        Image image3 = icon3.getImage();
        fence = image3.getScaledInstance(480/width, 480/width, Image.SCALE_DEFAULT);

        ImageIcon icon4 = new ImageIcon("iconTree.png");
        Image image4 = icon4.getImage();
        tree = image4.getScaledInstance(480/width, 480/width, Image.SCALE_DEFAULT);

        ImageIcon icon5 = new ImageIcon("iconGrass.png");
        Image image5 = icon5.getImage();
        grass = image5.getScaledInstance(480/width, 480/width, Image.SCALE_DEFAULT);

        ImageIcon icon6 = new ImageIcon("dogPrints.png");
        Image image6 = icon6.getImage();
        dog_footprints = image6.getScaledInstance(480/width, 480/width, Image.SCALE_DEFAULT);

        ImageIcon icon7 = new ImageIcon("squirrelPrints.png");
        Image image7 = icon7.getImage();
        squirrel_footprints = image7.getScaledInstance(480/width, 480/width, Image.SCALE_DEFAULT);

        // Build panel of buttons
        buttons = new JButton[height][width];
        for (int row = 0; row < height; row++) {
            for (int col = 0; col < width; col++) {
                // Initialize and add button
                JButton button = new JButton();
                buttons[row][col] = button;
                Border border = new LineBorder(Color.black, 1);
                button.setOpaque(true);
                button.setBackground(new Color(0x006600));
                button.setBorder(border);
                button.setName(row+","+col);
                bottomPanel.add(button);
            }
        }

        // Window setup
        setSize(540, 540); // fixed size
        setTitle("Terriers and Squirrels");
        setResizable(false);
        setLocationRelativeTo(null);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setAlwaysOnTop(true);
    }


    // Redraw the field
    public void redrawField() {

        // Update Generation
        message.setText("Terriers and Squirrels, Move: " + counter++);

        // Redraw board
        for (int i = 0; i < field.length; i++) {
            for (int j = 0; j < field[0].length; j++) {
                switch (field[i][j]) {
                case 'D':
                    buttons[i][j].setIcon(new ImageIcon(dog));
                    break;
                case 'S':
                    buttons[i][j].setIcon(new ImageIcon(squirrel));
                    break;
                case 'F':
                    buttons[i][j].setIcon(new ImageIcon(fence));
                    break;
                case 'T':
                    buttons[i][j].setIcon(new ImageIcon(tree));
                    break;
                case 'M':
                    buttons[i][j].setIcon(new ImageIcon(munch));
                    break;
                case 'd':
                    buttons[i][j].setIcon(new ImageIcon(dog_footprints));
                    break;
                case 's':
                    buttons[i][j].setIcon(new ImageIcon(squirrel_footprints));
                    break;
                default:
                    buttons[i][j].setIcon(new ImageIcon(grass));
                }
            }
        }
        repaint();
        revalidate();
    }
}