package ass2;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.nio.*;
import java.nio.channels.FileChannel;


//import for Date class
import java.util.*;

public class JFrameExt extends JFrame
{
    //Saving time value at start of procedure.
    long startTime = new Date().getTime();
    //Saving time value at end of procedure.
    long endTime = new Date().getTime();
    //Calculating time in milliseconds taken by the procedure.
    double diffTime =(double) (endTime - startTime);

    JPanel contentPane;
    BorderLayout BorderLayout1 = new BorderLayout();
    JPanel jPanel1 = new JPanel();
    JPanel jPanel2 = new JPanel();
    JPanel jPanel3 = new JPanel();
    JTextField jtfSource = new JTextField();
    JTextField jtfSource2 = new JTextField();
    JLabel jLabel1 = new JLabel();
    JLabel jLabel2 = new JLabel();
    JButton jbtcopy = new JButton();
    JButton jbtclr = new JButton();
    JComboBox jcboType = new JComboBox();

    JScrollPane jScrollPane1 = new JScrollPane();
    JTextArea jtaMessage = new JTextArea();

    public JFrameExt()
    {
        try
        {
            setDefaultCloseOperation (EXIT_ON_CLOSE);
            jbInit();
        }
        catch (Exception ex)
        {
            ex.printStackTrace();
        }
    }

    private void jbInit()throws Exception
    {
        contentPane = (JPanel) getContentPane();
        contentPane.setLayout(BorderLayout1);
        setSize(new Dimension(400,300));
        setTitle("Abraham Zepeda's Assignment 2");

        //Panel 1 specifications
        jPanel1.setBackground(Color.red);
        jPanel1.setPreferredSize(new Dimension (50,30));

        jtfSource.setText("");
        jtfSource.setColumns(8);
        jLabel1.setText("From");

        jtfSource2.setText("");
        jtfSource2.setColumns(8);
        jLabel2.setText("To");

        //Add items to combo box jcboType
        jcboType.addItem("Binary");
        jcboType.addItem("Text");

        //Panel 2 specifications
        jPanel2.setBackground(Color.green);

        jScrollPane1.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
        jScrollPane1.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        jtaMessage.setEditable(false);
        jtaMessage.setColumns(40);
        jtaMessage.setRows(10);

        //Panel 3 specifications
        jPanel3.setBackground(Color.blue);
        jPanel3.setPreferredSize(new Dimension(50, 30));

        jbtcopy.setText("Copy");
        jbtcopy.addActionListener(new JFrameExt_jbtcopy_actionAdapter(this));
        jbtclr.setText("Clear");
        jbtclr.addActionListener(new JFrameExt_jbtclr_actionAdapter(this));

        jcboType.addActionListener(new JFrameExt_jcboType_actionAdapter(this));

        //Puting elements togheter in Panel 1
        contentPane.add(jPanel1,java.awt.BorderLayout .NORTH);
        jPanel1.add(jLabel1);
        jPanel1.add(jtfSource);
        jPanel1.add(jLabel2);
        jPanel1.add(jtfSource2);
        jPanel1.add(jcboType);

        //Puting elements togheter in Panel 2
        contentPane.add(jPanel2,java.awt.BorderLayout .CENTER);
        jPanel2.add(jtaMessage);
        jPanel2.add(jScrollPane1);
        jScrollPane1.getViewport().add(jtaMessage);

       //Puting elements togheter in Panel 3
        contentPane.add(jPanel3,java.awt.BorderLayout .SOUTH);
        jPanel3.add(jbtcopy);
        jPanel3.add(jbtclr);
    }

    //EVENTS ON JCOMBOBOX
    public void jcboType_actionPerformed(ActionEvent e)
    {
        //Getting Selected Item from combo box jcboType
        String type = (String)jcboType.getSelectedItem();

        String fromFile;
        String toFile;
        fromFile =jtfSource.getText();
        toFile =jtfSource2.getText();

        //TEXT SELECTION ON COMBOBOX
        if(type.equals("Text"))
        {
            try
            {
                //TEXT file i/o code
                //Declaring variables
                BufferedReader br = null;
                PrintWriter pw = null;
                //Creating BufferedReader br for inputting from textfile
                //Creating PrintWriter pw for outputting to textfile
                br = new BufferedReader(new FileReader(fromFile));
                pw = new PrintWriter(new FileWriter(toFile));
                //reading from br a line at a time.
                //writing to pw the line read.
                //flushing to pw to write immediately
                String line;
                    while ((line = br.readLine()) != null)
                    {
                    pw.println(line);
                    pw.flush();
                    }
                }
            catch (Exception ex)
            {
                System.err.println("File error");
                ex.printStackTrace();
            }
            finally
            {
                try
                {
                    //file close code WORK ON THIS
                    //pw.close();
                }
                catch (Exception ex) {
                    ex.printStackTrace();
                }
            }

        //write on message screen
        jtaMessage.append("File Copy Started " + fromFile + "\n");
        jtaMessage.append("File Copy Completed " + "\n");
        jtaMessage.append("Time in Seconds " + diffTime/1000.0 + "\n");
        jtaMessage.paintImmediately(0,0,jtaMessage.getWidth(), jtaMessage.getHeight());
        }

        //DATA SELECTION ON COMBOBOX
        else if(type.equals("Binary"))
        {
            try
            {
                //DATA file i/o code
                //Declaring variables
                FileInputStream fis=null;;
                FileOutputStream fos=null;
                //Creating FileInputStream fis for inputting from binary file
                //Creating FileOutputStream fos for outputting to binary file
                fis = new FileInputStream (fromFile);
                fos = new FileOutputStream (toFile);
                //reading from fis a byte at a time.
                //writing to fos the byte read.
                //flushing to fos to write immediately.
                int r;
                while ((r = fis.read()) != -1)
                {
                  fos.write((byte) r);
                  fos.flush();
                }
                //write on message screen
                //write on message screen
                jtaMessage.append("File Copy Started " + fromFile + "\n");
                jtaMessage.append("File Copy Completed " + "\n");
                jtaMessage.append("Time in Seconds " + diffTime/1000.0 + "\n");
                jtaMessage.paintImmediately(0,0,jtaMessage.getWidth(), jtaMessage.getHeight());
            }
            catch (Exception ex)
            {
                jtaMessage.setText("File error");
                System.err.println("File error");
                ex.printStackTrace();
            }
            finally
            {
                try
                {
                    //file close code WORK ON THIS
                    //.close();
                }
                catch (Exception ex) {
                    ex.printStackTrace();
                }
            }
        }
    }

    //EVENTS ON COPY, QUESTION IS HOW TO IMPLEMENT THIS AFTER SELECTING FROM COMBOBOX.
    public void jbtcopy_actionPerformed(ActionEvent e)
    {
    jtaMessage.setText("HOW TO DO THIS, INSTEAD OF FIRING EVEN UPON COMBOBOX SELECTION, DOING IT AFTER COMBOSELECTION AND CLICKING COPY?");
    }

    //EVENTS ON CLEAR
    public void jbtclr_actionPerformed(ActionEvent e)
    {
    jtfSource.setText("");
    jtfSource2.setText("");
    //clearing JTextArea jtaMessage
    jtaMessage.setText("");
    }
}





///Nothing to do here
class JFrameExt_jcboType_actionAdapter implements ActionListener {
    private JFrameExt adaptee;
    JFrameExt_jcboType_actionAdapter(JFrameExt adaptee) {
        this.adaptee = adaptee;
    }
    public void actionPerformed(ActionEvent e)
    {
        adaptee.jcboType_actionPerformed(e);
    }
}
class JFrameExt_jbtcopy_actionAdapter implements ActionListener
{
    private JFrameExt adaptee;
    JFrameExt_jbtcopy_actionAdapter(JFrameExt adaptee)
    {
        this.adaptee = adaptee;
    }
    public void actionPerformed(ActionEvent e)
    {
        adaptee.jbtcopy_actionPerformed(e);
    }
}
class JFrameExt_jbtclr_actionAdapter implements ActionListener
{
    private JFrameExt adaptee;
    JFrameExt_jbtclr_actionAdapter(JFrameExt adaptee)
    {
        this.adaptee = adaptee;
    }
    public void actionPerformed(ActionEvent e)
    {
        adaptee.jbtclr_actionPerformed(e);
    }
}