/**
 *           Advanced Real-Time Simulation Lab (ARS) - Carleton University
 *
 * PROJECT: 			Web Service-Enabled DCD++ Client
 * AUTHOR(S): 			Rami Madhoun
 * PURPOSE: 			Euaclyptus
 * CMD LINE ARG:
 * OUTPUT:
 * DATE CREATED: 		Nov 25, 2006
 * LAST MOD:   			Jan 10, 2007
 * LAST MOD BY:			Rami Madhoun
 * COPYRIGHT:			ARS-Carleton University
 * USAGE:
 * COMMENTS:
 **/

// This form handles the user management tasks:
// Adding a new user, modifying an exsisting account, and deleting a user account
// There are two types of users
// user: is able to use the simulation service without managing the user accounts
// admin: is able to use the simulation service and managing the user accounts

package ca.gc.nrc.iit.pds.appgui.simulation;

import SimulationService.stubs.CDppPortType;

import SimulationService.pstubs.PCDppPortType;

import java.awt.BorderLayout;

import javax.swing.JFrame;
import java.awt.Dimension;
import javax.swing.JPanel;
import javax.swing.BorderFactory;
import com.borland.jbcl.layout.XYLayout;
import com.borland.jbcl.layout.*;
import java.awt.Color;
import javax.swing.JTextField;
import javax.swing.JLabel;
import java.awt.Font;
import javax.swing.JFormattedTextField;
import javax.swing.JPasswordField;
import javax.swing.JButton;
import javax.swing.JComboBox;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import sun.misc.BASE64Encoder;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.rmi.RemoteException;
import java.io.UnsupportedEncodingException;
//import com.borland.dx.sql.dataset.ProcedureResolver;
import javax.swing.JOptionPane;

public class UserFrame extends JFrame {

    private final int MODE_DISTRIBUTED = 1;
    private final int MODE_PARALLEL = 2;

    private String serviceAddress = null;
    private MainFrame parentFrame =  null;


// DCD++ / PCD++ stub classes
    private CDppPortType cdppPortType = null;
    private PCDppPortType pcdppPortType = null;

    private int sessionID = -1;
    private String userRole = "user";

    MessageDigest messageDigest = null;

    BorderLayout borderLayout1 = new BorderLayout();
    JPanel jPanel1 = new JPanel();
    XYLayout xYLayout1 = new XYLayout();
    JLabel jLabelUsername = new JLabel();
    JLabel jLabelPassword = new JLabel();
    JFormattedTextField jFTUsername = new JFormattedTextField();
    JPasswordField jPasswordField = new JPasswordField();
    JButton jButtonUpdate = new JButton();
    JButton jButtonAdd = new JButton();
    JButton jButtonDelete = new JButton();
    JComboBox jComboBoxUserTypes = new JComboBox();
    JLabel jLabelRole = new JLabel();
    JButton jButtonCancel = new JButton();
    //ProcedureResolver procedureResolver1 = new ProcedureResolver();
    JLabel statusBar = new JLabel();

    public UserFrame(MainFrame parentFrame, String serviceAddress, int sessionID) {

// Sets the sessionID, parentFrame , and the serviceAddress variables
        this.sessionID = sessionID;
        this.parentFrame = parentFrame;
        this.serviceAddress = serviceAddress;


// Retrieving the operation mode from the main form and assigining it locally
        switch( ((MainFrame)this.parentFrame).getMode()) {
        case MODE_DISTRIBUTED:
            cdppPortType =  (this.parentFrame).getCDppPortType();
            break;
        case MODE_PARALLEL:
            pcdppPortType = (this.parentFrame).getPCDppPortType();
            break;
        }

        try {
            jbInit();
        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }

    private void jbInit() throws Exception {
        this.getContentPane().setLayout(borderLayout1);
        jPanel1.setLayout(xYLayout1);
        jPanel1.setBorder(BorderFactory.createEtchedBorder());
        this.setResizable(false);
        this.setTitle("Users");
        jLabelUsername.setFont(new java.awt.Font("Dialog", Font.BOLD, 12));
        jLabelUsername.setForeground(Color.blue);
        jLabelUsername.setText("Username");
        jLabelPassword.setFont(new java.awt.Font("Dialog", Font.BOLD, 12));
        jLabelPassword.setForeground(Color.blue);
        jLabelPassword.setText("Password");
        jButtonUpdate.setText("Update");
        jButtonUpdate.addActionListener(new
                                        userFrame_jButtonUpdate_actionAdapter(this));
        jButtonAdd.setToolTipText("");
        jButtonAdd.setText("Add");
        jButtonAdd.addActionListener(new UserFrame_jButtonAdd_actionAdapter(this));
        jButtonDelete.setText("Delete");
        jButtonDelete.addActionListener(new
                                        userFrame_jButtonDelete_actionAdapter(this));
        jLabelRole.setFont(new java.awt.Font("Dialog", Font.BOLD, 12));
        jLabelRole.setForeground(Color.blue);
        jLabelRole.setText("Role");
        jButtonCancel.setText("Cancel");
        jButtonCancel.addActionListener(new
                                        UserFrame_jButtonCancel_actionAdapter(this));
        statusBar.setFont(new java.awt.Font("Dialog", Font.BOLD, 12));
        statusBar.setBorder(BorderFactory.createEtchedBorder());
        statusBar.setText(" ");
        this.getContentPane().add(jPanel1, java.awt.BorderLayout.CENTER);
        jPanel1.add(jLabelUsername, new XYConstraints(8, 10, 85, 27));
        jPanel1.add(jLabelPassword, new XYConstraints(8, 44, -1, -1));
        jPanel1.add(jButtonAdd, new XYConstraints(8, 74, 81, 27));
        jPanel1.add(jFTUsername, new XYConstraints(72, 14, 105, 22));
        jPanel1.add(jPasswordField, new XYConstraints(72, 43, 105, 22));
        jPanel1.add(jLabelRole, new XYConstraints(197, 16, 53, 20));
        jPanel1.add(jButtonUpdate, new XYConstraints(95, 74, 81, 27));
        jPanel1.add(jButtonDelete, new XYConstraints(183, 74, 81, 27));
        jPanel1.add(jButtonCancel, new XYConstraints(270, 74, 81, 27));
        jPanel1.add(jComboBoxUserTypes, new XYConstraints(240, 15, 111, 21));
        this.getContentPane().add(statusBar, java.awt.BorderLayout.SOUTH);

        this.setSize(new Dimension(375, 162));

        String[] roles= new String[] { "User", "Administrator"};

        for (int i = 0 ; i < roles.length; i++ ){
            jComboBoxUserTypes.addItem(roles[i]);
        }
        this.setLocationRelativeTo(null);
        this.setVisible(true);
    }

    public void jButtonCancel_actionPerformed(ActionEvent e) {
        jFTUsername.setText("");
        jPasswordField.setText("");
        jComboBoxUserTypes.setSelectedIndex(0);
        this.setVisible(false);
        this.dispose();
    }

// Adding new user account, the information needed is username, password, role: user/admin
    public void jButtonAdd_actionPerformed(ActionEvent e) {

        String password = "";
        for (int i = 0; i < jPasswordField.getPassword().length; i++)
        password = password + jPasswordField.getPassword()[i];

        try{
            messageDigest = MessageDigest.getInstance("SHA");
            messageDigest.update(password.getBytes("UTF-8"));
            byte[] raw = messageDigest.digest();

            String hashPassword = (new BASE64Encoder()).encode(raw);

            if(jComboBoxUserTypes.getSelectedItem().toString().equals("User")){
                userRole = "user";
            } else if ( jComboBoxUserTypes.getSelectedItem().toString().equals("Administrator")) {
                userRole = "admin";
            }

            switch(parentFrame.getMode()) {
            case MODE_DISTRIBUTED:
                statusBar.setText(cdppPortType.addUser(sessionID, jFTUsername.getText(), hashPassword, userRole));
                break;
            case MODE_PARALLEL:
                statusBar.setText(pcdppPortType.addUser(sessionID, jFTUsername.getText(), hashPassword, userRole));
                break;
            }

        } catch (RemoteException exp) {
            JOptionPane.showMessageDialog(this, exp.getMessage(),"Error",JOptionPane.ERROR_MESSAGE);

        }  catch ( NoSuchAlgorithmException exp) {
            exp.printStackTrace();
        } catch ( UnsupportedEncodingException exception) {
            exception.printStackTrace();
        }
    }

// Updates an exsisting user account
    public void jButtonUpdate_actionPerformed(ActionEvent e) {

        String password = "";
        for (int i = 0; i < jPasswordField.getPassword().length; i++)
        password = password + jPasswordField.getPassword()[i];

        try{
            messageDigest = MessageDigest.getInstance("SHA");
            messageDigest.update(password.getBytes("UTF-8"));
            byte[] raw = messageDigest.digest();

            String hashPassword = (new BASE64Encoder()).encode(raw);

            if(jComboBoxUserTypes.getSelectedItem().toString().equals("User")){
                userRole = "user";
            } else if ( jComboBoxUserTypes.getSelectedItem().toString().equals("Administrator")) {
                userRole = "admin";
            }

            switch(parentFrame.getMode()) {
            case MODE_DISTRIBUTED:
                statusBar.setText(cdppPortType.updateUserInfo(sessionID, jFTUsername.getText(), hashPassword, userRole));
                break;
            case MODE_PARALLEL:
                statusBar.setText(pcdppPortType.updateUserInfo(sessionID, jFTUsername.getText(), hashPassword, userRole));
                break;
            }

        } catch (RemoteException exp) {
            JOptionPane.showMessageDialog(this, exp.getMessage(),"Error",JOptionPane.ERROR_MESSAGE);
        }  catch ( NoSuchAlgorithmException exp) {
            exp.printStackTrace();
        } catch ( UnsupportedEncodingException exception) {
            exception.printStackTrace();
        }
    }

// Deletes a user account
    public void jButtonDelete_actionPerformed(ActionEvent e) {
        try {
            switch(parentFrame.getMode()) {
            case MODE_DISTRIBUTED :
                statusBar.setText(cdppPortType.delUser(sessionID, jFTUsername.getText()));
                break;
            case MODE_PARALLEL:
                statusBar.setText(pcdppPortType.delUser(sessionID, jFTUsername.getText()));
                break;
            }

        }catch (RemoteException exp) {
            JOptionPane.showMessageDialog(this, exp.getMessage(),"Error",JOptionPane.ERROR_MESSAGE);
        }
    }
}

class userFrame_jButtonDelete_actionAdapter implements ActionListener {
    private UserFrame adaptee;
    userFrame_jButtonDelete_actionAdapter(UserFrame adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jButtonDelete_actionPerformed(e);
    }
}

class userFrame_jButtonUpdate_actionAdapter implements ActionListener {
    private UserFrame adaptee;
    userFrame_jButtonUpdate_actionAdapter(UserFrame adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jButtonUpdate_actionPerformed(e);
    }
}

class UserFrame_jButtonAdd_actionAdapter implements ActionListener {
    private UserFrame adaptee;
    UserFrame_jButtonAdd_actionAdapter(UserFrame adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jButtonAdd_actionPerformed(e);
    }
}

class UserFrame_jButtonCancel_actionAdapter implements ActionListener {
    private UserFrame adaptee;
    UserFrame_jButtonCancel_actionAdapter(UserFrame adaptee) {
        this.adaptee = adaptee;
    }

    public void actionPerformed(ActionEvent e) {
        adaptee.jButtonCancel_actionPerformed(e);
    }
}