/**
* VERIFY
* Verifies the codes returned by Assignment 1 and Assignment 2
* orbital exercises.
*
* Paul Francis, 4th April 2001, ANU
*/
import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;

public class verify extends Applet implements ActionListener
{
    TextField n1query, n2query, n1answer, n2answer;
    Label n1qlabel, n2qlabel;
    Button c1button, c2button;

    // Set up the java box with buttons
    public void init()
    {
	setLayout(new GridLayout(2,4));

	   n1qlabel = new Label("Enter 1st code", Label.RIGHT);
	   add(n1qlabel);
	   n1query = new TextField(10);
	   add(n1query);
	   n1query.setText("");

           c1button = new Button("Verify!");
	   add(c1button);
	   c1button.addActionListener(this);
	   n1answer = new TextField(10);
	   add(n1answer);
	   n1answer.setText("");

	   n2qlabel = new Label("Enter 2nd code", Label.RIGHT);
	   add(n2qlabel);
	   n2query = new TextField(9);
	   add(n2query);
	   n2query.setText("");

           c2button = new Button("Verify!");
	   add(c2button);
	   c2button.addActionListener(this);
	   n2answer = new TextField(10);
	   add(n2answer);
	   n2answer.setText("");

    }

    // When the verify button is clicked, read in and check input values
    public void actionPerformed(ActionEvent event)
    {
	if(event.getSource() == c1button){
	    try {
	           int n1 = Integer.valueOf(n1query.getText()).intValue();
		   n1 = n1 - 1000000003;
		   double dn1 = (double) n1;
		   double rem = Math.IEEEremainder(dn1,163.0);
		   if (rem < 0.0001 & rem > -0.0001){
      	             n1answer.setText("Valid!");
		   } else {
      	             n1answer.setText("Wrong!");
		   }
	        } catch (NumberFormatException e)
		{
		   n1answer.setText("Dud Input");
		}
	}
	if(event.getSource() == c2button){
	    try {
	           int n2 = Integer.valueOf(n2query.getText()).intValue();
		   n2 = n2 - 300000007;
		   double dn2 = (double) n2;
		   double rem = Math.IEEEremainder(dn2,167.0);
		   if (rem < 0.0001 & rem > -0.0001){
      	             n2answer.setText("Valid!");
		   } else {
      	             n2answer.setText("Wrong!");
		   }
	        } catch (NumberFormatException e)
		{
		   n2answer.setText("Dud Input");
		}
	}

    }

}