// purpose: simulate an alarm clock and improve class skills

import java.awt.event.*;   // used for GUI
import javax.swing.*;      // used for GUI
import java.awt.*;         // used for GUI

public class AlarmClock {
	public static void main( String[] args ) {
		AlarmClock c = new AlarmClock();
		
		ClockGUI gui = new ClockGUI( c );
	}

	// attributes
	int hour = 0;
	int minute = 0;

	public AlarmClock() {
		this.setTime( 0, 0 );
	}

	public AlarmClock( int h, int m ) {
		this.setTime( h, m );
	}

	public void setTime( int h, int m ) {
		// sets hour to h and minute to m
	}

	public void setHour( int h ) {
	}

	public void setMinute( int m ) {
	}

	public boolean isAM() {
		// reports whether its AM

		return false;
	}

	public boolean isPM() {
		// reports whether its PM

		return false;
	}

	public String toString() {
		// produces a representation of form hh : mm AM/PM

		return "HH:MM AM";
	}

	public void tick() {
		// moves time along by one minute
	}
	
	public int getHour() {
		return this.hour;
	}

	public int getMinute() {
		return this.minute;
	}
}

class ClockGUI {
	// attributes
	JLabel timeLabel = new JLabel();
	JButton tickButton = new JButton( "Tick" );
	JButton setTimeButton = new JButton( "Set Time" );
	JLabel meridienLabel = new JLabel();
	JTextField hourField = new JTextField( 3 );
	JTextField minuteField = new JTextField( 3 );
	AlarmClock clock;
	JLabel timesLabel = new JLabel();
	JFrame window = new JFrame();

	// constructor
	public ClockGUI( AlarmClock alarmClock ) {
		clock = alarmClock;
		window.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
		window.setAlwaysOnTop( true );
		window.setSize( 450, 200 );
		window.setLayout( new GridLayout( 4, 1) );
		window.setBackground( new Color( 255, 255, 205 ) );

		JPanel panel0 = new JPanel();
		panel0.setLayout( new FlowLayout() );
		JLabel space = new JLabel( "" );
		panel0.add( space );
		window.add( panel0 );

		JPanel panel1 = new JPanel();
		panel1.setLayout( new FlowLayout() );
		panel1.add( timeLabel );
		timesLabel.setText("Time:  " + clock.hour + ":" + clock.minute);
		panel1.add(timesLabel);
		panel1.add( meridienLabel );
		window.add( panel1 );


		JPanel panel2 = new javax.swing.JPanel();
		panel2.setLayout( new FlowLayout() );
		panel2.add( new JLabel( "Hour:" ) );
		panel2.add( hourField );
		panel2.add( new JLabel( "Minute:" ) );
		panel2.add( minuteField );
		panel2.add( setTimeButton );
		window.add( panel2 );

		JPanel panel3 = new JPanel();
		panel3.setLayout( new FlowLayout() );
		panel3.add( tickButton );
		window.add( panel3 );
	 	
		window.setTitle( clock.toString() );

		window.setVisible( true );

		tickButton.addActionListener( new ActionListener() {
			
			public void actionPerformed(ActionEvent e) {
				clock.tick();
				timesLabel.setText("Time:  " + clock.hour + ":" + clock.minute);

				window.setTitle( clock.toString() );
			}
		} ); 

		setTimeButton.addActionListener( new ActionListener() {
			
			public void actionPerformed(ActionEvent e) {

				String sh = hourField.getText();
				String sm = minuteField.getText();

				if ( sh.matches( "^\\d+$" ) && sm.matches( "^\\d+$" ) ) {
					int h = Integer.parseInt( sh );
					int m = Integer.parseInt( sm );
					clock.setTime( h, m );
				}
				else if ( sh.matches( "^\\d+$" ) ) {
					int h = Integer.parseInt( sh );
					clock.setHour( h );
				}
				else if ( sm.matches( "^\\d+$" ) ) {
					int m = Integer.parseInt( sm );
					clock.setMinute( m );
				}
				timesLabel.setText("Time:  " + clock.hour + ":" + clock.minute);
				
				window.setTitle( clock.toString() );
			}
		});
	}

	public void updateTime() {
		timeLabel.setText( clock.toString() );
	}
}