import javax.swing.*;
import javax.swing.border.Border;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Random;

public class test extends JFrame implements ActionListener {

    JTextField text = new JTextField("Unten");
    LotteryButton[] fields = new LotteryButton[49];
    int counter = 0;
    int [] auswahl = new int [6];
    JButton bplay = new JButton("Play");

    public test() {
        super("Titel");
        this.setSize(400, 400);
        this.setLocation(100, 100);
        this.setLayout(new BorderLayout());

        JPanel center = new JPanel();
        center.setLayout(new GridLayout(7, 7, 10, 10));
        this.add(center, BorderLayout.CENTER);

        for (int i = 0; i < 49; i++) {
            LotteryButton lb = new LotteryButton(i + 1);
            fields[i] = lb;
            center.add(lb);
            lb.addActionListener(this);
        }

        this.add(bplay, BorderLayout.NORTH);
        bplay.addActionListener(this);
        text.setEditable(false);
        this.add(text, BorderLayout.SOUTH);
        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
        setVisible(true);
    }

    private int playLottery(int [] check) {
        int [] ziehung = new int[6];
        int gleiche = 0;

        for(int i = 0; i < 6; i++) {
            Random rand = new Random();
            int zahl = rand.nextInt(49) + 1;
            for(int k = 0; k <= i; k++) {
                if(ziehung[k] == zahl) {
                    zahl = rand.nextInt(49) + 1;
                    k = -1;
                }

            }
            ziehung[i] = zahl;

            System.out.print(ziehung[i] + " ");

        }
        System.out.println();

        for(int j = 0; j < 6; j++) {
            for(int k = 0; k < 6; k++) {
                if(check[j] == ziehung[k]) {
                    gleiche++;
                }
            }
        }
        text.setText("You have " + gleiche + " matches with the 6 winning numbers!");

        return gleiche;
    }

    private class LotteryButton extends JButton {
        private int number;

        private LotteryButton(int number) {
            super("" + number);
            this.number = number;
        }

        public int getNumber() {
            return this.number;
        }
    }

    public void actionPerformed(ActionEvent e) {

        for(int i = 0; i < 49; i++) {
            if(e.getSource().equals(fields[i])) {
                if(fields[i].getText() == "X") {
                    fields[i].setText("" + fields[i].getNumber());
                    fields[i].setForeground(Color.BLACK);
                    counter--;
                    text.setText(fields[i].getNumber() + " unselected.");
                    for(int j = 0; j < 6; j++) {
                        if(auswahl[j] == fields[i].getNumber()) {
                            auswahl[j] = 0;
                        }
                    }
                } else {
                    if(counter == 6) {
                        text.setText("You have already selected 6 fields!");
                    } else {
                        text.setText(fields[i].getNumber() + " selected.");
                        int k = 0;
                        while(auswahl[k] != 0) {
                            k++;
                        }
                        auswahl[k] = fields[i].getNumber();
                        fields[i].setText("X");
                        fields[i].setForeground(Color.BLUE);
                        counter++;
                    }
                }
            }
        }

        if(e.getSource().equals(bplay)) {
            if(counter != 6) {
                text.setText("Please select 6 fields!");
            } else {
                playLottery(auswahl);
            }
        }
    }
}