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

import java.util.Random;

public class Hangman extends JFrame {

    private Hangman.Hangman_Panel canvas = new Hangman.Hangman_Panel();

    // How many times you can guess the wrong letter till you lose
    static final int DEAD = 7;

    private int errors;        // amount of errors
    private String message;   // Message displaying either Error or Victory
    private String information; // Secondary Message
    private String RealWord;      // The Real word
    private StringBuffer GuessWord;// The Guessed word
    private Button StartBtn;      // The Restart Button
    private Button GoBtn;         // The Go Button
    private TextField LetterBox; // The LetterBox

    //Contructor
    public Hangman() {

        this.add(canvas, BorderLayout.CENTER); // Add canvas to center
        // Create a "Textbox" for the letter guessing
        LetterBox = new TextField();

        JPanel p = new JPanel();
        p.setLayout(new FlowLayout());

        p.add(StartBtn = new Button("Restart"));
        p.add(new Label("Guess a letter"));
        p.add(LetterBox);
        p.add(GoBtn = new Button("Go"));

        add(p, BorderLayout.SOUTH);

    }

    public static void main(String[] args) {

        JFrame frame = new Hangman();

        frame.setSize(300, 400);
        frame.setLocationRelativeTo(null); // Center the frame
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);

    }

    class Hangman_Panel extends JPanel implements ActionListener {

        public void actionPerformed(ActionEvent e){

            if (e.getSource() == StartBtn){
                initGame();
            }

            if (e.getSource() == GoBtn){

                processTurn();

                LetterBox.setText("");
                repaint();
            }
        }

        @Override
        public void paint(Graphics g) {
            super.paintComponent(g);

            int BaseY = 250;

            //THE HANGING STAND
            if (errors > 0) { //1 Error
                g.drawLine(90, BaseY, 200, BaseY); //The ground
                g.drawLine(125, BaseY, 125, BaseY-100); //The bar going up
                g.drawLine(125, BaseY-100, 175, BaseY-100); //The sidebar
                g.drawLine(175, BaseY-100, 175, BaseY-75); //The Rope
            }

            //THE PERSON
            if (errors > 1) {
               g.drawOval(170, BaseY-75, 10, 12); // The Head
            }

            if (errors > 2) {
               g.drawLine(175, BaseY-62, 175, BaseY-45); // The Body
            }

            if (errors > 3) {
               g.drawLine(165, BaseY-65, 175, BaseY-55); // Left Arm
            }

            if (errors > 4) {
               g.drawLine(185, BaseY-65, 175, BaseY-55); // Right Arm
            }

            if (errors > 5) {
               g.drawLine(170, BaseY-30, 175, BaseY-45); //Left Leg
            }

            if (errors > 6) {  //7 Errors
               g.drawLine(175, BaseY-45, 180, BaseY-30); // Right Left
            }


            //Show Messages/Errors
            g.drawString(message, 40, BaseY+25);
            g.drawString(information, 25, BaseY+45);
            g.drawString(new String (GuessWord), 140, BaseY-120);

            g.drawString(new String("WELCOME TO HANGMAN!"), 75, 40);
        }

         public void init() {

        //Make buttons event listeners
        StartBtn.addActionListener(this);
        GoBtn.addActionListener(this);

        //Startup the Game
        initGame();

        }

        public void initGame() {
            //Set the errors to 0
            errors = 0;

            //Enter the wordslist, separated by a | here
            String str = "write|program|receive|positive|variables|temporary|good|bad|test";
            String[] temp;


            //delimiter
            String delimiter = "\\|";

            // given string will be split by the argument delimiter provided.
            temp = str.split(delimiter);

            //Create the Random Seed Generator
            Random RandGenerator = new Random();

            //Generate my Random Number
            int randomInt = RandGenerator.nextInt(temp.length);

            RealWord = new String(temp[randomInt]);

            char positions[] = new char[RealWord.length()];

            for (int i = 0; i < RealWord.length(); i++) {
                positions[i] = '*';
            }

            String s = new String(positions);
            GuessWord = new StringBuffer(s);

            LetterBox.setText("");

            //Delete Messages
            message = "";
            information = "";
            repaint();
        }


        private void processTurn() {

            String s, t;
            char a;

            s = LetterBox.getText();
            a = s.charAt(0);

            if (!Character.isLetter(a)) {
                message = "Only enter letters please.";
                return;
            }

            if (s.length() > 1) {
                message = "One letter at a time please.";
                return;
            }


            //Check if letter has been used already
            t = new String(GuessWord);
            if (t.indexOf(s) != -1) {
                message = "You have already guessed with that letter!";
                return;
            }

            //If the letter you guessed does not occur int he Real Word
            if (RealWord.indexOf(s) == -1) {

                message = "";
                errors++;

                if (errors==DEAD) {
                    message = "Sorry, you lose";
                    information = "Click restart to try again!";

                    //INSERT MOVING HANGMAN HERE.
                }

                return;
            }

            //Replace stars in the Guessed Word with the found letter
            for (int i = 0; i < RealWord.length(); i++) {
                if (RealWord.charAt(i) == a) {
                    GuessWord.setCharAt(i, a);
                }
            }

            t = new String(GuessWord);

            //If all of the stars have been filled, then you win!
            if (t.indexOf('*') == -1) {
                message = "You have won!";
                return;
            }

            //Delete the Message
            message = "";
            repaint();
        }

    }


}