package no.nowak.pw.exercises;

import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JProgressBar;
import javax.swing.JTextField;

public class Exercise7
{
    static JLabel resultLabel;
    static JLabel countingTimeLabel, onPermuteLabel, endTimeLabel,startTimeLabel;
    JPanel jPanel;
    JFrame jFrame;
    JButton jButton, jStopButton;
    static JProgressBar jProgressBar;
    static JTextField nFieldText;

    Exercise7Permutation ePermutation;
    Exercise7Monitor eMonitor;

    Thread permutationThread, monitorThread;

    public Exercise7()
    {
        ePermutation = new Exercise7Permutation();
        permutationThread = new Thread(ePermutation);

        eMonitor = new Exercise7Monitor();
        monitorThread = new Thread(eMonitor);

        initPanel();
    }

    static int permutation(int i)
    {
        if (i < 1)
            return 1;
        else
            return i * permutation(i - 1);
    }

    public void initPanel()
    {
        jPanel = new JPanel();
        jFrame = new JFrame("Exercise 7");
        jStopButton = new JButton("Stop");
        jStopButton.addActionListener(new ActionListener()
        {
            @Override
            public void actionPerformed(ActionEvent e)
            {
                monitorThread.interrupt();
            }
        });
        jButton = new JButton("Start");
        jButton.addActionListener(new ActionListener()
        {
            @Override
            public void actionPerformed(ActionEvent e)
            {
                int n = Integer.parseInt(nFieldText.getText());
                resultLabel.setText(factorial(n).toString());
                permutationThread.start();
                monitorThread.start();
                jProgressBar.setMinimum(0);
                jProgressBar.setMaximum(factorial(n));
            }
        });

        nFieldText = new JTextField();
        nFieldText.addActionListener(new ActionListener()
        {
            @Override
            public void actionPerformed(ActionEvent e)
            {
                if (nFieldText.equals(""))
                    jButton.setEnabled(false);
                else
                    jButton.setEnabled(true);
            }
        });

        resultLabel = new JLabel("Result n! ");
        startTimeLabel = new JLabel("Start time: ");
        endTimeLabel = new JLabel("End Time: ");
        countingTimeLabel = new JLabel("Counting Time: ");
        onPermuteLabel = new JLabel("Permutations count: ");
        jProgressBar = new JProgressBar();

        jPanel.setLayout(new GridLayout(5, 0));
        jPanel.add(jButton);
        jPanel.add(jStopButton);
        jPanel.add(nFieldText);
        jPanel.add(countingTimeLabel);
        jPanel.add(resultLabel);
        jPanel.add(startTimeLabel);
        jPanel.add(endTimeLabel);
        jPanel.add(onPermuteLabel);
        jPanel.add(jProgressBar);


        jFrame.add(jPanel);
        jFrame.setSize(600, 300);
        jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        jFrame.setVisible(true);
    }

    Integer factorial(int i)
    {
        if (i < 1)
            return 1;
        else
            return i * factorial(i - 1);
    }

    public static void setCountingTime(Double time)
    {
        countingTimeLabel.setText(countingTimeLabel.getText() + time.toString());
    }

    public static void setOnPermute(Integer permuteCount)
    {
        onPermuteLabel.setText(onPermuteLabel.getText() + permuteCount.toString());
    }

    public static Integer getNText()
    {
        return Integer.parseInt(nFieldText.getText());
    }

    public static void setStartTime(Double time)
    {
        startTimeLabel.setText(startTimeLabel.getText() + time.toString());
    }

    public static void setEndTime(Double time)
    {
        endTimeLabel.setText(endTimeLabel.getText() + time.toString());
    }
    public static void setProgressBarValue(int val)
    {
        jProgressBar.setValue(val);
    }



}