/**
 * Student Attendance System
 * Object Oriented Programming
 * P03
 * Nicholas Leong
 * 1002827B
 */

//Import required GUI files
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Vector;

public class AttendanceGUI {

	JTextField usernameEntry, passwordEntry;
	JLabel username, password;
	JButton bLogin,bClear;
	JPanel pTop;
	JFrame mainFrame;

    public AttendanceGUI() {

			mainFrame = new JFrame();
			mainFrame.setTitle("Student Attendance System");
			mainFrame.setSize(400,150);
			mainFrame.setLocation(100,100);
			mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

			pTop = new JPanel();
			pTop.setLayout(new GridLayout(3,2));

			usernameEntry = new JTextField("Student ID");
			passwordEntry = new JTextField("Matric Number");
			username = new JLabel("Username",JLabel.LEFT);
			password = new JLabel("Password",JLabel.LEFT);

			bLogin = new JButton("Login");
			bLogin.addActionListener(new ButtonHandler());

			bClear = new JButton("Clear");
			bClear.addActionListener(new ButtonHandler());

			pTop.add(username);
	 		pTop.add(usernameEntry);
			pTop.add(password);
			pTop.add(passwordEntry);
			pTop.add(bLogin);
			pTop.add(bClear);

			mainFrame.add(pTop);
			mainFrame.setVisible(true);
    }

	public static void main(String [] args)
	{
		JFrame.setDefaultLookAndFeelDecorated(true);
		AttendanceGUI attendanceSystem = new AttendanceGUI();
	}

	public class ButtonHandler implements ActionListener
	{
	String adminAccount="admin";
	String adminPassword="pass";
	String[] accUserInfo={"1234567A","1234567B","1234567C","1234567D"};
	String[] accPassInfo={"1234567A","1234567B","1234567C","1234567D"};
	Vector<AccountData> testing = new Vector<AccountData>();
	String[] test={"Absent","Absent","Absent","Absent"};
	int i=0;

		public void actionPerformed(ActionEvent evt)
		{
				if(evt.getSource() == bLogin)
				{
				String studentID = usernameEntry.getText();
				String studentPassword = passwordEntry.getText();
				Vector<String> vec = new Vector<String>();
				Date today = new Date();
				loop: for(String x : accUserInfo)
				{
					if (studentID.compareToIgnoreCase(adminAccount) == 0 && studentPassword.compareToIgnoreCase(adminPassword) == 0)
					{
						JOptionPane.showMessageDialog(mainFrame, "Student ID: "+accUserInfo[0]+" Login Date: "+test[0]+
							"\nStudent ID: "+accUserInfo[1]+" Login Date: "+test[1]+
							"\nStudent ID: "+accUserInfo[2]+" Login Date: "+test[2]+
							"\nStudent ID: "+accUserInfo[3]+" Login Date: "+test[3] , "Attendance List", JOptionPane.INFORMATION_MESSAGE);
						break loop;
					}
					else if (studentID.compareToIgnoreCase(x)==0 && studentPassword.compareToIgnoreCase(x)==0)
					{
						test[i]=today.toString();
						testing.add(new AccountData(x, today.toString()));
						JOptionPane.showMessageDialog(mainFrame, "Student ID: "+studentID+" Login Date: "+today.toString() , "Attendance Marked", JOptionPane.INFORMATION_MESSAGE);
						i++;
						if (i>3)
						{
							i=0;
						}
						break loop;
					}
					if (x == accUserInfo[accUserInfo.length-1])
					{
					JOptionPane.showMessageDialog(mainFrame, "Error: Invalid Login Information" , "Login Error", JOptionPane.INFORMATION_MESSAGE);
					}
				}
				}
				if(evt.getSource() == bClear)
				{
					usernameEntry.setText("");
					passwordEntry.setText("");
				}

			}
	}

}