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package filehandlingoop;
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import javax.swing.*;
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import javax.swing.table.DefaultTableModel;
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import java.awt.*;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.io.*;
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import java.util.Scanner;
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public class FileHandlingOOP {
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    static JTextField filename;
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    static JTextField nameField;
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    static JTextField idNumberField;
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    static JComboBox<String> courseComboBox;
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    static JRadioButton male;
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    static JRadioButton female;
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    static JSpinner yearLevel;
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    static DefaultTableModel deftable;
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    static ButtonGroup genderGroup;
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    static JTextField statusField;
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    static JTable table;
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    static JComboBox<String> data;
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    static JTextField searchField;
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    static JButton saveUpdate;
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    public static void main(String[] args) {
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        JFrame frame = new JFrame();
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        frame.setLayout(new BorderLayout());
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        frame.setTitle("File handling");
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        frame.setSize(900, 600);
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        frame.setResizable(false);
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        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
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        // Top Panel
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        JLabel titleLabel = new JLabel("FILE HANDLING", JLabel.CENTER);
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        titleLabel.setFont(new Font("Times New Roman", Font.BOLD, 25));
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        JPanel panelTop = new JPanel();
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        panelTop.setPreferredSize(new Dimension(900, 70));
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        panelTop.setBorder(BorderFactory.createLineBorder(Color.BLACK));
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        panelTop.add(titleLabel, BorderLayout.CENTER);
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        // Left Panel
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        filename = new JTextField();
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        filename.setPreferredSize(new Dimension(130, 40));
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        JButton save = new JButton("SAVE");
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        save.addActionListener(new SaveButtonListener());
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        save.setPreferredSize(new Dimension(90, 30));
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        JButton read = new JButton("READ");
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        read.addActionListener(new ReadButtonListener());
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        read.setPreferredSize(new Dimension(90, 30));
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        JButton update = new JButton("UPDATE");
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        update.setPreferredSize(new Dimension(90, 30));
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        update.addActionListener(new UpdateButtonListener());
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        saveUpdate = new JButton("Save Updated File");
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        saveUpdate.setPreferredSize(new Dimension(90, 30));
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        data = new JComboBox<>();
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        data.setPreferredSize(new Dimension(90, 30));
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        JPanel panelLeft = new JPanel();
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        panelLeft.setPreferredSize(new Dimension(150, 460));
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        panelLeft.setBorder(BorderFactory.createLineBorder(Color.BLACK));
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        panelLeft.add(new JLabel("Write a Filename"));
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        panelLeft.add(filename);
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        panelLeft.add(save);
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        panelLeft.add(read);
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        panelLeft.add(update);
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        panelLeft.add(saveUpdate);
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        // Center Panel
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        JPanel panelCenter = new JPanel();
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        panelCenter.setLayout(null);
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        panelCenter.setPreferredSize(new Dimension(350, 460));
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        panelCenter.setBorder(BorderFactory.createLineBorder(Color.BLACK));
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        JLabel manageStudentLabel = new JLabel("MANAGE STUDENT");
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        manageStudentLabel.setBounds(80, 20, 150, 20);
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        panelCenter.add(manageStudentLabel);
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        JLabel nameLabel = new JLabel("Name");
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        nameLabel.setBounds(10, 60, 100, 20);
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        panelCenter.add(nameLabel);
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        nameField = new JTextField();
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        nameField.setBounds(100, 60, 150, 20);
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        panelCenter.add(nameField);
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        JLabel lrnLabel = new JLabel("ID Number");
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        lrnLabel.setBounds(10, 110, 100, 20);
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        panelCenter.add(lrnLabel);
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        idNumberField = new JTextField();
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        idNumberField.setBounds(100, 110, 150, 20);
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        panelCenter.add(idNumberField);
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        JLabel courseLabel = new JLabel("Course");
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        courseLabel.setBounds(10, 160, 100, 20);
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        panelCenter.add(courseLabel);
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        String[] courses = {"BSIT", "BITM", "BSCE", "BSMATH"};
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        courseComboBox = new JComboBox<>(courses);
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        courseComboBox.setBounds(100, 160, 150, 20);
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        panelCenter.add(courseComboBox);
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        JLabel genderLabel = new JLabel("Gender");
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        genderLabel.setBounds(10, 210, 100, 20);
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        panelCenter.add(genderLabel);
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        male = new JRadioButton("M");
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        male.setBounds(100, 210, 40, 20);
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        female = new JRadioButton("F");
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        female.setBounds(150, 210, 40, 20);
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        genderGroup = new ButtonGroup();
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        genderGroup.add(male);
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        genderGroup.add(female);
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        panelCenter.add(male);
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        panelCenter.add(female);
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        JLabel yearLevelLabel = new JLabel("Year Level");
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        yearLevelLabel.setBounds(10, 260, 100, 20);
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        panelCenter.add(yearLevelLabel);
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        String[] yearLevels = {"1st Year", "2nd Year", "3rd Year", "4th Year"};
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        yearLevel = new JSpinner(new SpinnerListModel(yearLevels));
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        yearLevel.setBounds(100, 260, 150, 25);
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        panelCenter.add(yearLevel);
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        JLabel statusLabel = new JLabel("Status");
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        statusLabel.setBounds(10, 320, 100, 20);
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        panelCenter.add(statusLabel);
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        statusField = new JTextField();
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        statusField.setBounds(100, 320, 150, 20);
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        panelCenter.add(statusField);
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        //==============================
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        JLabel searchLabel = new JLabel("Search:");
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        searchLabel.setBounds(10, 20, 50, 20);
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        searchField = new JTextField();
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        searchField.setBounds(70, 20, 175, 20);
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        JButton searchButton = new JButton("Search");
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        searchButton.setBounds(250, 20, 75, 20);
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        // Right Panel
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        String[] columnNames = {"Name", "ID Number", "Course", "Gender", "Year", "Status"};
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        deftable = new DefaultTableModel(columnNames, 0);
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        table = new JTable(deftable);
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        JScrollPane tableScrollPane = new JScrollPane(table);
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        tableScrollPane.setBounds(10, 85, 330, 260);
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        JPanel panelRight = new JPanel();
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        panelRight.setLayout(null);
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        panelRight.setPreferredSize(new Dimension(400, 460));
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        panelRight.setBorder(BorderFactory.createLineBorder(Color.BLACK));
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        panelRight.add(tableScrollPane);
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        panelRight.add(searchLabel);
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        panelRight.add(searchField);
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        panelRight.add(searchButton);
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        // Bottom Panel
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        JPanel panelBottom = new JPanel();
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        panelBottom.setPreferredSize(new Dimension(900, 70));
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        panelBottom.setBorder(BorderFactory.createLineBorder(Color.BLACK));
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        // Add panels to frame
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        frame.add(panelTop, BorderLayout.NORTH);
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        frame.add(panelLeft, BorderLayout.WEST);
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        frame.add(panelCenter, BorderLayout.CENTER);
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        frame.add(panelRight, BorderLayout.EAST);
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        frame.add(panelBottom, BorderLayout.SOUTH);
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        frame.setVisible(true);
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    }
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    public static class SaveButtonListener implements ActionListener {
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        @Override
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        public void actionPerformed(ActionEvent e) {
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            try {
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                String file = "studentData.csv";
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                File myFile = new File(file);
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                BufferedWriter writer = new BufferedWriter(new FileWriter(myFile, true));
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                writer.write(nameField.getText() + ",");
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                writer.write(idNumberField.getText() + ",");
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                writer.write((String) courseComboBox.getSelectedItem() + ",");
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                writer.write((male.isSelected() ? "Male" : (female.isSelected() ? "Female" : "")));
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                writer.write(",");
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                writer.write((String) yearLevel.getValue());
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                writer.write(",");
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                writer.write(statusField.getText());
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                writer.write("\n");
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                writer.close();
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                JOptionPane.showMessageDialog(null, "File Created/Updated: " + file, "Success", JOptionPane.INFORMATION_MESSAGE);
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                nameField.setText("");
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                idNumberField.setText("");
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                genderGroup.clearSelection();
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                courseComboBox.setSelectedIndex(0);
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                yearLevel.setValue("1st Year");
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                statusField.setText("");
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            } catch (IOException ex) {
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                JOptionPane.showMessageDialog(null, "An error occurred", "Error", JOptionPane.ERROR_MESSAGE);
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                ex.printStackTrace();
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            }
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        }
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    }
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    public static class ReadButtonListener implements ActionListener {
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        @Override
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        public void actionPerformed(ActionEvent e) {
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            try {
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                String file = "studentData.csv";
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                File myFile = new File(file);
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                BufferedReader reader = new BufferedReader(new FileReader(myFile));
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                Scanner myReader = new Scanner(reader);
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                while (myReader.hasNextLine()) {
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                    String data = myReader.nextLine();
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                    String[] row = data.split(",");
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                    deftable.addRow(row);
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                }
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                myReader.close();
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            } catch (IOException ex) {
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                JOptionPane.showMessageDialog(null, "File Not Found", "Error", JOptionPane.ERROR_MESSAGE);
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            }
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        }
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    }
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    public static class UpdateButtonListener implements ActionListener {
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        @Override
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        public void actionPerformed(ActionEvent e) {
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            String id = idNumberField.getText();
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            // Find the row corresponding to the ID number and update it
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            for (int i = 0; i < deftable.getRowCount(); i++) {
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                String currentId = (String) deftable.getValueAt(i, 1); // ID is at index 1
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                if (currentId.equals(id)) {
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                    deftable.setValueAt(nameField.getText(), i, 0); // Name is at index 0
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                    deftable.setValueAt(courseComboBox.getSelectedItem(), i, 2); // Course at index 2
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                    deftable.setValueAt(male.isSelected() ? "Male" : "Female", i, 3); // Gender at index 3
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                    deftable.setValueAt(yearLevel.getValue(), i, 4); // Year Level at index 4
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                    deftable.setValueAt(statusField.getText(), i, 5); // Status at index 5
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                    break;
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                }
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            }
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        }
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    }
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}