//importing of all the needed java Packages import javax.swing.; import javax.swing.border.EmptyBorder; import javax.swing.table.DefaultTableModel;// import java.awt.; import java.awt.event.*; import java.util.LinkedList;

// class Contact { String name; String phoneNumber; String email;

// Constructor to create a new contact
Contact(String name, String phoneNumber, String email) {
    this.name = name;
    this.phoneNumber = phoneNumber;
    this.email = email;
}

}

class RoundedButton extends JButton { private final int radius; // Radius for rounded corners

// Constructor for the rounded button
RoundedButton(String text, int radius) {
    super(text);
    this.radius = radius; // Set the radius
    setBorder(new EmptyBorder(10, 10, 10, 10)); // Optional padding
    setContentAreaFilled(false); // Remove default button background
}


@Override
protected void paintComponent(Graphics g) {
    if (getModel().isArmed()) {
        g.setColor(getBackground().darker());
    } else {
        g.setColor(getBackground()); //
    }

    g.fillRoundRect(0, 0, getWidth(), getHeight(), radius, radius);
    super.paintComponent(g); // Call the parent method
}

}

// The Main class for the phonebook application public class Main extends JFrame { LinkedList contactList = new LinkedList<>(); // List to store contacts JTextField nameField, phoneField, emailField; JTable contactTable; DefaultTableModel tableModel;

// The setting up the main application frame
public Main() {
    setTitle("Phone Booker"); 
    setSize(400, 600);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setLayout(new CardLayout());

    //  Intro Page for the app
    JPanel introPanel = createIntroPage();
    add(introPanel, "Intro");


    JPanel contentPanel = createMainPage();
    add(contentPanel, "Main");

    setVisible(true);
}

// Method to create the intro page with a welcome message and a button
private JPanel createIntroPage() {
    JPanel introPanel = new JPanel();
    introPanel.setLayout(new BorderLayout());
    introPanel.setBackground(new Color(211, 211, 211));

    // Create and set up the welcome label
    JLabel welcomeLabel = new JLabel("Welcome to PhoneBooker", SwingConstants.CENTER);
    welcomeLabel.setFont(new Font("Arial", Font.BOLD, 24));
    introPanel.add(welcomeLabel, BorderLayout.CENTER);


    RoundedButton proceedBtn = new RoundedButton("lETS GET STARTED ->", 15);
    proceedBtn.setBackground(new Color(0, 123, 255)); //blue colour of button
    proceedBtn.setForeground(Color.WHITE);
    proceedBtn.addActionListener(e -> switchToMainPage());


    JPanel buttonPanel = new JPanel();
    buttonPanel.add(proceedBtn);
    introPanel.add(buttonPanel, BorderLayout.SOUTH);

    return introPanel;
}

// main content page private JPanel createMainPage() { JPanel contentPanel = new JPanel(); contentPanel.setLayout(new BorderLayout()); // Set layout to BorderLayout contentPanel.setBackground(new Color(211, 211, 211)); // Set background color to light gray

    //  Header Panel for the mainn page
    JPanel headerPanel = new JPanel();
    JLabel headerLabel = new JLabel("Phonebook App", SwingConstants.CENTER);
    headerLabel.setFont(new Font("Arial", Font.BOLD, 24)); //  font for the header
    headerPanel.setBackground(new Color(51, 153, 255)); // header background color
    headerLabel.setForeground(Color.WHITE);
    headerPanel.add(headerLabel);
    contentPanel.add(headerPanel, BorderLayout.NORTH); //positioning the header panel


    JPanel inputPanel = new JPanel(new GridLayout(3, 2, 10, 10)); // grid layout that for the display of contacts
    inputPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10)); // Set border for input panel

 //fields of the grid panel
    nameField = new JTextField();
    phoneField = new JTextField();
    emailField = new JTextField();

    // labels for the panel
    inputPanel.add(new JLabel("Name:"));
    inputPanel.add(nameField);
    inputPanel.add(new JLabel("Phone Number:"));
    inputPanel.add(phoneField);
    inputPanel.add(new JLabel("Email:"));
    inputPanel.add(emailField);

    contentPanel.add(inputPanel, BorderLayout.NORTH);


    tableModel = new DefaultTableModel(new String[]{"Name", "Phone", "Email"}, 0);
    contactTable = new JTable(tableModel); // Create the table
    JScrollPane scrollPane = new JScrollPane(contactTable); //scroll pane for the table
    contentPanel.add(scrollPane, BorderLayout.CENTER); // scroll pane for the center of the content panel


    JPanel actionPanel = new JPanel(new GridLayout(2, 3, 10, 10));
    actionPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));


    RoundedButton insertBtn = new RoundedButton("Add", 15);
    insertBtn.setBackground(new Color(0, 123, 255));
    insertBtn.setForeground(Color.WHITE);
    insertBtn.addActionListener(e -> insertContact()); // action listener for  insert contact

    RoundedButton searchBtn = new RoundedButton("Search", 15);
    searchBtn.setBackground(new Color(0, 123, 255));
    searchBtn.setForeground(Color.WHITE);
    searchBtn.addActionListener(e -> searchContact()); //  Action listener for Contacts

    RoundedButton displayAllBtn = new RoundedButton("Display All", 15);
    displayAllBtn.setBackground(new Color(0, 123, 255));
    displayAllBtn.setForeground(Color.WHITE);
    displayAllBtn.addActionListener(e -> displayAllContacts()); // action listener for  display all contacts

    RoundedButton deleteBtn = new RoundedButton("Delete", 15);
    deleteBtn.setBackground(new Color(0, 123, 255));
    deleteBtn.setForeground(Color.WHITE);
    deleteBtn.addActionListener(e -> deleteContact());

    RoundedButton updateBtn = new RoundedButton("Update", 15);
    updateBtn.setBackground(new Color(0, 123, 255));
    updateBtn.setForeground(Color.WHITE);
    updateBtn.addActionListener(e -> updateContact());

    RoundedButton analyzeBtn = new RoundedButton("Analyze", 15);
    analyzeBtn.setBackground(new Color(0, 123, 255));
    analyzeBtn.setForeground(Color.WHITE);
    analyzeBtn.addActionListener(e -> analyzeSearchEfficiency());

    // Add buttons to action panel
    actionPanel.add(insertBtn);
    actionPanel.add(searchBtn);
    actionPanel.add(displayAllBtn);
    actionPanel.add(deleteBtn);
    actionPanel.add(updateBtn);
    actionPanel.add(analyzeBtn);

    contentPanel.add(actionPanel, BorderLayout.SOUTH);

    return contentPanel;
}


private void switchToMainPage() {
    CardLayout cl = (CardLayout) getContentPane().getLayout();
    cl.show(getContentPane(), "Main");
}

// Insert a contact into the LinkedList
public void insertContact() {
    String name = nameField.getText(); // get name
    String phoneNumber = phoneField.getText(); // get phone number
    String email = emailField.getText(); // Get email from

    // Check if name and phone number are provided to continue
    if (!name.isEmpty() && !phoneNumber.isEmpty()) {
        Contact newContact = new Contact(name, phoneNumber, email); // Create new contact if conditions met
        contactList.add(newContact); // Add contact to the list of all contacts
        tableModel.addRow(new Object[]{name, phoneNumber, email}); // Add contact to the table
        clearFields(); // Clear input fields to get new input from the user
        JOptionPane.showMessageDialog(this, "Contact added."); // Show success message
    } else {
        JOptionPane.showMessageDialog(this, "Name and Phone are required.");
    }
}

// Search for a contact by name or phone number
public void searchContact() {
    String query = JOptionPane.showInputDialog("Enter Name or Phone:");
    for (Contact contact : contactList) {
        // Check if the query matches the contact's name or phone number
        if (contact.name.equalsIgnoreCase(query) || contact.phoneNumber.equals(query)) {
            JOptionPane.showMessageDialog(this, "Found: " + contact.name + " - " + contact.phoneNumber + " - " + contact.email); // Show found contact
            return;
        }
    }
    JOptionPane.showMessageDialog(this, "Contact not found."); // Show not found message if contact not in list
}

// Display all contacts in the LinkedList
public void displayAllContacts() {
    tableModel.setRowCount(0);
    for (Contact contact : contactList) { // Loop through contacts
        tableModel.addRow(new Object[]{contact.name, contact.phoneNumber, contact.email}); // Add each contact to the table
    }
}

// Delete a contact by name or phone number
public void deleteContact() {
    String query = JOptionPane.showInputDialog("Enter Name or Phone to Delete:");
    for (int i = 0; i < contactList.size(); i++) { //loop through list for target contact
        Contact contact = contactList.get(i);
        // Check if the query matches the contact's name or phone number then
        if (contact.name.equalsIgnoreCase(query) || contact.phoneNumber.equals(query)) {
            contactList.remove(i); // Remove contact from the list
            tableModel.removeRow(i); // Remove contact from the table model
            JOptionPane.showMessageDialog(this, "Contact deleted.");
            return;
        }
    }
    JOptionPane.showMessageDialog(this, "Contact not found.");
}

// Update contact information
public void updateContact() {
    String query = JOptionPane.showInputDialog("Enter Name or Phone to Update:");
    for (int i = 0; i < contactList.size(); i++) {
        Contact contact = contactList.get(i); // Get current contact

        if (contact.name.equalsIgnoreCase(query) || contact.phoneNumber.equals(query)) {
            // Prompt user for new contact details
            String newName = JOptionPane.showInputDialog("Enter new Name:", contact.name);
            String newPhone = JOptionPane.showInputDialog("Enter new Phone:", contact.phoneNumber);
            String newEmail = JOptionPane.showInputDialog("Enter new Email:", contact.email);

            // Update contact details with new details
            contact.name = newName;
            contact.phoneNumber = newPhone;
            contact.email = newEmail;


            tableModel.setValueAt(newName, i, 0);
            tableModel.setValueAt(newPhone, i, 1);
            tableModel.setValueAt(newEmail, i, 2);
            JOptionPane.showMessageDialog(this, "Contact updated.");
            return;
        }
    }
    JOptionPane.showMessageDialog(this, "Contact not found."); //
}

// Analyze search efficiency by measuring time taken for search
public void analyzeSearchEfficiency() {
    String query = JOptionPane.showInputDialog("Enter Name or Phone to Search:"); // Prompt user for search item
    long startTime = System.nanoTime(); // Record start time

    for (Contact contact : contactList) { // Loop through contacts // Check if the query matches the contact's name or phone number

        if (contact.name.equalsIgnoreCase(query) || contact.phoneNumber.equals(query)) {
            long endTime = System.nanoTime(); // Record end time and calculate the time it took
            long duration = endTime - startTime;
            JOptionPane.showMessageDialog(this, "Found: " + contact.name + "\nSearch Time: " + duration + " nanoseconds."); // Show found message with duration
            return;
        }
    }
    long endTime = System.nanoTime();
    long duration = endTime - startTime;
    JOptionPane.showMessageDialog(this, "Contact not found. Search Time: " + duration + " nanoseconds.");
}

// Clear input fields after adding or updating contact
public void clearFields() {
    nameField.setText(""); // Clear name field
    phoneField.setText(""); // Clear phone number field
    emailField.setText(""); // Clear email field
}

// Main method to run the application
public static void main(String[] args) {
    new Main(); // Create a new instance of the Main class
}

}