import java.awt.Container;

import javax.swing.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;

import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingConstants;


public class Lab5 extends JFrame {



     private static final int WIDTH=400;
     private static final int HEIGHT=500;
      JLabel Welcome, Prompt, First, Last, Email, Phone, Credit, Label1, Label2, Label3, Label4, Booking;
      JTextField F, L, E, P, C, L3, L4;
      JButton Button1, Button2, Button3, Button4, Book;
      JLabel S1, S2, S3, S4, S5, S6, Fees;
          String a, b;


     AbuDhabiHandler adhandler;
     DubaiHandler dxbhandler;
     LondonHandler lhandler;
     ParisHandler phandler;
     BookHandler bhandler;


     public Lab5()
     {


         adhandler = new AbuDhabiHandler();
         dxbhandler = new DubaiHandler();
         lhandler = new LondonHandler();
         phandler = new ParisHandler();
         bhandler = new BookHandler();




          setTitle("Flight Booking Application");
          Container Pane=getContentPane();
          Pane.setLayout(new GridLayout(0,2));
          Welcome=new JLabel("Welcome to KU Flight booking");
          Prompt=new JLabel("Enter Your Personal Information");
          First= new JLabel("First Name:", SwingConstants.LEFT);
          Last= new JLabel("Last Name:", SwingConstants.LEFT);
          Email= new JLabel("Email Address:", SwingConstants.LEFT);
          Phone= new JLabel("Phone Number:", SwingConstants.LEFT);
          Credit= new JLabel("Credit Card Number", SwingConstants.LEFT);
          Label1= new JLabel("Depart from", SwingConstants.LEFT);
          Label2= new JLabel("Depart to", SwingConstants.LEFT);
          Label3= new JLabel("Departure date", SwingConstants.LEFT);
          Label4= new JLabel("Return date", SwingConstants.LEFT);
          Booking= new JLabel("Booking Fees", SwingConstants.LEFT);
          Button1 = new JButton("Abu Dhabi");
          Button2 = new JButton("Dubai");
          Button3 = new JButton("London");
          Button4 = new JButton("Paris");
          Book = new JButton("Book");
          F=new JTextField(10);
          L=new JTextField(10);
          E=new JTextField(10);
          P=new JTextField(10);
          C=new JTextField(10);
          L3=new JTextField(10);
          L4=new JTextField(10);

         S1 = new JLabel (" ");
         S2 = new JLabel (" ");
         S3 = new JLabel (" ");
         S4 = new JLabel (" ");
         S5 = new JLabel (" ");
         S6 = new JLabel (" ");
         Fees = new JLabel (" ");


        Button1.setEnabled(true);
        Button2.setEnabled(true);
        Button3.setEnabled(false);
        Button4.setEnabled(false);
        Book.setEnabled(false);
        L3.setEnabled(false);
        L4.setEnabled(false);



         Button1.addActionListener(adhandler);
         Button2.addActionListener(dxbhandler);
         Button3.addActionListener(lhandler);
         Button4.addActionListener(phandler);
         Book.addActionListener(bhandler);


          Pane.add(S1);
          Pane.add(Welcome);
          Pane.add(Prompt);
          Pane.add(S2);
          Pane.add(First);
          Pane.add(F);
          Pane.add(Last);
          Pane.add(L);
          Pane.add(Email);
          Pane.add(E);
          Pane.add(Phone);
          Pane.add(P);
          Pane.add(Credit);
          Pane.add(C);
          Pane.add(Label1);
          Pane.add(S3);
          Pane.add(Button1);
          Pane.add(Button2);
          Pane.add(Label2);
          Pane.add(S4);
          Pane.add(Button3);
          Pane.add(Button4);
          Pane.add(Label3);
          Pane.add(L3);
          Pane.add(Label4);
          Pane.add(L4);
          Pane.add(Booking);
          Pane.add(Fees);
          Pane.add(S5);
          Pane.add(S6);
          Pane.add(Book);


          setSize(WIDTH, HEIGHT);
          setDefaultCloseOperation(EXIT_ON_CLOSE);
          setVisible(true);

          }

private class AbuDhabiHandler implements ActionListener {

     @Override
     public void actionPerformed(ActionEvent e) {
          if (F.getText().equals("") || L.getText().equals("") || E.getText().equals("") || P.getText().equals("") || C.getText().equals("")) {
               JOptionPane.showMessageDialog(null, "You have left an empty Text field", "message", JOptionPane.INFORMATION_MESSAGE);
               }else {
               Button3.setEnabled(true);
               Button4.setEnabled(true);
               Button2.setEnabled(false);
               a = "Abu Dhabi";
               }

     }

}
private class DubaiHandler implements ActionListener {

     @Override
     public void actionPerformed(ActionEvent arg0) {
          if (F.getText().equals("") || L.getText().equals("") || E.getText().equals("") || P.getText().equals("") || C.getText().equals("")) {
               JOptionPane.showMessageDialog(null, "You have left an empty Text field", "message", JOptionPane.INFORMATION_MESSAGE);

               }else
               { Button1.setEnabled(false); Button3.setEnabled(true); Button4.setEnabled(true); a = "Dubai";

               }

     }

}
private class LondonHandler implements ActionListener {

     @Override
     public void actionPerformed(ActionEvent arg0) {
          Button4.setEnabled(false);
          L3.setEnabled(true);
          L4.setEnabled(true);
          Book.setEnabled(true);
          b = "London";
          if (a.equals("Abu Dhabi")) {
               if(b.equals("London"))
                     Fees.setText("7000 AED");
               else
                     Fees.setText("7500 AED");

          }else {
               if(b.equals("London"))
                     Fees.setText("9000 AED");
               else
                     Fees.setText("10000 AED");

          }

     }

}
private class ParisHandler implements ActionListener {

     @Override
     public void actionPerformed(ActionEvent arg0) {
          Button3.setEnabled(false);
          L3.setEnabled(true);
          L4.setEnabled(true);
          Book.setEnabled(true);
          b = "Paris";
          if (a.equals("Abu Dhabi")) {
               if(b.equals("London"))
                     Fees.setText("7000 AED");
               else
                     Fees.setText("7500 AED");
          }else{
               if(b.equals("London"))
                     Fees.setText("9000 AED");
               else
                     Fees.setText("10000 AED");

          }
     }
}

private class BookHandler implements ActionListener {

     @Override
     public void actionPerformed(ActionEvent arg0) {
          if (L3.getText().equals("") || L4.getText().equals("")) {
               JOptionPane.showMessageDialog(null, "You have left an empty Text field", "message", JOptionPane.INFORMATION_MESSAGE);

          }else{
               PrintWriter outfile;
               try {
                     outfile = new PrintWriter("receipt.txt");
                     outfile.print("Dear " + F.getText()+" "+Last.getText()  +"\nEmail: "+ E.getText()+"\nPhone number:" + P.getText()+"\nYour booking have been confirmed with the following information\nDepatrure from "+a+" on "+L3.getText() +"\nDestinaion is: "+ b+"\n" + "Return date to your city is : "+L4.getText()+"\nTicket fees are "+Fees.getText()+"\nYour credit card "+C.getText()+" was used to pay for this ticket\nThank you for using our airlines\nWe hope you enjoy your flight");
                     outfile.close();
                     } catch (FileNotFoundException e) {
                     // TODO Auto-generated catch block
                     e.printStackTrace();


               }
          }
     }

}


public static void main (String[] args){

          Lab5 app =new Lab5();
     }

}