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

class Clock extends JPanel implements ActionListener {
    
    private JButton tickButton, resetButton;
    private JLabel hourLabel, minuteLabel;
    private int minutes = 0;
    
    public Clock(){
        JPanel panel = new JPanel();
        panel.setLayout(new FlowLayout());
        
        tickButton = new JButton("Tick");
        resetButton = new JButton("Reset");
        hourLabel = new JLabel("12:");
        minuteLabel = new JLabel("00");
        
        panel.add(tickButton);
        panel.add(resetButton);
        panel.add(hourLabel);
        panel.add(minuteLabel);
        
        setLayout(new BorderLayout());
        add("South", panel);
        
        tickButton.addActionListener(this);
        resetButton.addActionListener(this);        
    }
    
    
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        g.drawOval(0, 0, 100, 100);
        double hourAngle = 2 * Math.PI * (minutes - 3 * 60)/ (12 * 60);
        double minuteAngle = 2 * Math.PI * (minutes - 15)/ 60;
        g.drawLine(50, 50,50 + (int)(30 * Math.cos(hourAngle)), 50 + (int)(30 * Math.sin(hourAngle)));
        g.drawLine(50, 50,50 + (int)(45 * Math.cos(minuteAngle)), 50 + (int)(45 * Math.sin(minuteAngle)));
    }
    
    public void reset() {
        minutes = 0;
        repaint();
    }
    
    public void tick() {
        minutes++;
        repaint();
    }
    
    public int getMinutes(){
        return minutes;
    }
    
    public void actionPerformed(java.awt.event.ActionEvent actionEvent) {
        if(actionEvent.getSource() == tickButton)
            tick();
        else
            reset();
        setLabels();
    }
    
    public void setLabels(){
        int hours = minutes/60;    
        int min = minutes - hours*60;
        
        if(hours == 0 ) //si hours es 0 añadir 12 de modo q la etiqueta muestre las 12 en punto.
            hourLabel.setText(Integer.toString(hours+12 )+ ":");
        else
            hourLabel.setText(Integer.toString(hours));
        
        if(min<10) //los minutos deberían tener dos dígitos
            minuteLabel.setText("0" + Integer.toString(min));
        else
            minuteLabel.setText(Integer.toString(min));
    }  
}