import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.HeadlessException;

import javax.swing.AbstractButton;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.filechooser.FileNameExtensionFilter;
import javax.swing.filechooser.FileSystemView;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.JPasswordField;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.Serializable;
import java.net.URL;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Arrays;

public class UserNamePage extends JDialog {


    //private final AbstractButton txtPath;
    private final JPanel contentPanel = new JPanel();
    private JTextField jtfUserName;
    private JTextField jtfUploadImage;
    private JTextField jtfFirstName;
    private JTextField jtfLastName;
    private JPasswordField jpwfSelectPassword;
    private JPasswordField jpwfReEnterPassword;
    private JTextField jtfEmail;
    private JFileChooser fileChooser = new JFileChooser();
    private ArrayList<String> allUserNames = new ArrayList<>();


    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        try {
            UserNamePage dialog = new UserNamePage();
            dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
            dialog.setVisible(true);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * Create the dialog.
     */
    public UserNamePage() {
        setTitle("Individual Lawyer Sign Up Screen");
        setBounds(100, 100, 819, 574);
        getContentPane().setLayout(new BorderLayout());
        contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));
        getContentPane().add(contentPanel, BorderLayout.CENTER);
        contentPanel.setLayout(null);
        {
            JLabel jlblUserName = new JLabel("User Name");
            jlblUserName.setBounds(159, 205, 84, 16);
            contentPanel.add(jlblUserName);
        }
        {
            JLabel jlblPassword = new JLabel("Select your password");
            jlblPassword.setBounds(159, 234, 133, 16);
            contentPanel.add(jlblPassword);
        }
        {
            JLabel jlblReenterPassword = new JLabel("Re-enter password");
            jlblReenterPassword.setBounds(159, 263, 164, 16);
            contentPanel.add(jlblReenterPassword);
        }
        {
            JLabel jlblUploadImage = new JLabel("Upload Image");
            jlblUploadImage.setBounds(160, 292, 104, 16);
            contentPanel.add(jlblUploadImage);
        }

        jtfUserName = new JTextField();
        jtfUserName.setBounds(335, 199, 171, 22);
        contentPanel.add(jtfUserName);
        jtfUserName.setColumns(10);

        jtfUploadImage = new JTextField(15);
        jtfUploadImage.setText("No File Uploaded");
        jtfUploadImage.setColumns(10);
        jtfUploadImage.setBounds(335, 289, 171, 22);
        contentPanel.add(jtfUploadImage);
        //browse button will fire an action event to allow user to scan their file system for image upload
        JButton jbtnBrowse = new JButton("Browse");
        jbtnBrowse.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {

                //the file chooser will start at the root drive (C:drive) and display the user's entire file system for file uploaded
                fileChooser = new JFileChooser("C:\", FileSystemView.getFileSystemView());
                fileChooser.setFileFilter(new FileNameExtensionFilter("Image Files", "jpg", "png", "gif"));

                int returnValue = fileChooser.showOpenDialog(jtfUploadImage);

                if(returnValue == JFileChooser.APPROVE_OPTION) {
                    String fileName = fileChooser.getSelectedFile().getName();
                    String extension = fileName.substring(fileName.lastIndexOf("."));
                    //this will only allow the user to upload a jpg, png and gif files
                    if(extension.equalsIgnoreCase(".jpg")||extension.equalsIgnoreCase(".png")||extension.equalsIgnoreCase(".gif")) {
                        //txtPath = new JTextField(15);
                        jtfUploadImage.setText(fileChooser.getSelectedFile().getPath());

                    }
                    else {
                        JOptionPane.showMessageDialog(null, "Please select and image file that is supported(.jpg, .png, .gif)");
                    }


                }
            }

        });
        jbtnBrowse.setBounds(539, 288, 97, 25);
        contentPanel.add(jbtnBrowse);

        JLabel jlblFirstName = new JLabel("First Name");
        jlblFirstName.setBounds(159, 115, 84, 16);
        contentPanel.add(jlblFirstName);

        JLabel jlblLastName = new JLabel("Last Name");
        jlblLastName.setBounds(159, 146, 84, 16);
        contentPanel.add(jlblLastName);

        jtfFirstName = new JTextField();
        jtfFirstName.setColumns(10);
        jtfFirstName.setBounds(335, 112, 171, 22);
        contentPanel.add(jtfFirstName);

        jtfLastName = new JTextField();
        jtfLastName.setColumns(10);
        jtfLastName.setBounds(335, 143, 171, 22);
        contentPanel.add(jtfLastName);

        jpwfSelectPassword = new JPasswordField();
        jpwfSelectPassword.setBounds(335, 231, 171, 22);
        contentPanel.add(jpwfSelectPassword);

        jpwfReEnterPassword = new JPasswordField();
        jpwfReEnterPassword.setBounds(335, 260, 171, 22);
        contentPanel.add(jpwfReEnterPassword);

        JButton jbtnCancel = new JButton("Cancel");
        jbtnCancel.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                dispose();

            }
        });
        jbtnCancel.setBounds(539, 479, 97, 25);
        contentPanel.add(jbtnCancel);

        JButton jbtnRegister = new JButton("Register");
        jbtnRegister.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent arg0) {
                try {
                    SaveUser();//NULL POINTER EXCEPTION HERE!!
                    } catch (NumberFormatException | HeadlessException
                        | ClassNotFoundException | SQLException | IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        });
        jbtnRegister.setBounds(648, 479, 97, 25);
        contentPanel.add(jbtnRegister);

        JLabel jlblEmail = new JLabel("Email");
        jlblEmail.setBounds(159, 175, 56, 16);
        contentPanel.add(jlblEmail);

        jtfEmail = new JTextField();
        jtfEmail.setBounds(335, 172, 171, 22);
        contentPanel.add(jtfEmail);
        jtfEmail.setColumns(10);
        {
            JPanel buttonPane = new JPanel();
            buttonPane.setLayout(new FlowLayout(FlowLayout.RIGHT));
            getContentPane().add(buttonPane, BorderLayout.SOUTH);
        }
    }

    //public void initalizeDB() {
        //try {
            //Class.forName("com.mysql.jdbc.Driver");
            //establish connection to the database
            //Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/abaapplication" , "root", "root");

        //}
        //catch(Exception e) {
            //e.printStackTrace();
        //}
    //}

@SuppressWarnings({ "null", "resource" })
public void SaveUser() throws SQLException, IOException, ClassNotFoundException, NumberFormatException, HeadlessException {
        String imagePath = null;
        String firstName = this.jtfFirstName.getText();
        String lastName = this.jtfLastName.getText();
        String email = this.jtfEmail.getText();
        String userName = this.jtfUserName.getText();
        //passwords need to be stored as char[]
        char[]password = this.jpwfSelectPassword.getPassword();
        char[]reenterpassword = this.jpwfReEnterPassword.getPassword();

        if(firstName.isEmpty()) {
            JOptionPane.showMessageDialog(null, "First Name is a required field");
        }
        else if(lastName.isEmpty()) {
            JOptionPane.showMessageDialog(null, "Last Name is a required field");
        }
        else if(email.isEmpty()) {
            JOptionPane.showMessageDialog(null, "Email is a required field");
        }//this will check if the username box is left empty
        else if(userName.isEmpty()) {
            JOptionPane.showMessageDialog(null, "Please select a user name");
        }//this will check the required length of the user name and decided if it is valid
        else if(userName.length() <= 0){
            JOptionPane.showMessageDialog(null, "This is not a valid user name. Please enter a valid user name");
        }//this will check if the password and re enter password fields are left blank
        else if(password.length <= 0 && reenterpassword.length <= 0) {
            JOptionPane.showMessageDialog(null, "Password fields are required");
        }
        else if((!(Arrays.equals(password, reenterpassword)))) {
            JOptionPane.showMessageDialog(null, "The passwords do not match. Please re-enter password.");
        }//this will compare the 2 arrays of password and reenter password and see if they match


        try{
            byte[] rawBytes = null;
            FileInputStream fileInputStream = null;

            if(imagePath.equals("No File Uploaded")) {//null pointer exeception here!!
                ClassLoader classLoader = this.getClass().getClassLoader();
                URL resources = classLoader.getResource("C:\Users\Justyn Bell\Desktop\abaApplicationImages\blankProfile.jpg");
                imagePath = resources.getFile();
            }

            File fileObject = new File(imagePath);
            fileInputStream = new FileInputStream(fileObject);
            //this will load the jdbc driver for SQL operations
            Class.forName("com.mysql.jdbc.Driver");
            //establish connection to the database
            Connection conn = DriverManager.getConnection("jdbc:mysql://localhost/abaapplication" , "root", "root");


            PreparedStatement pst = conn.prepareStatement("UserCreate");


            pst.setString(1, firstName);
            pst.setString(2, lastName);
            pst.setString(3, email);
            pst.setString(4, userName);
            //pst.setString(5, password);
            //pst.setArray(6, reenterpassword);


            int imageLength = Integer.parseInt(String.valueOf(fileObject.length()));
            rawBytes = new byte[imageLength];
            fileInputStream.read(rawBytes, 0, imageLength);
            //this will set the image to an integer in the database using prepared statement
            pst.setBytes(7, rawBytes);

            int count = pst.executeUpdate();

            if(count > 0) {
                JOptionPane.showMessageDialog(this, "Image file sucessfully saved");
            }
            else {
                JOptionPane.showMessageDialog(this, "We're sorry, there was an error saving this file");
            }
        }


    catch (HeadlessException| IOException | ClassNotFoundException | NumberFormatException| SQLException e) {
                e.printStackTrace();
            }


    }
}