import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.io.*;
import java.text.*;
import java.lang.* ;

class fs extends Frame implements ActionListener
{

    public Toolkit      tk;
    public Image        img;

    public TextField    tf_date;

    public PrintCanvas  canvas;
    public Label        lbl_pageno;
    public TextField    tf_pageno;
    public Button       but_display;
    public Button       but_print;
    public Label        lbl_message;
    public TextArea     ta_message;
    public Button       but_help;
    public Button       but_exit;

    public Vector       vec;
    public int          i;


    public fs(String filename)
    {
        // initial layout
        setTitle("Flight Schedule");
        setResizable(false);
        setForeground(Color.black);
        // setBackground(Color.lightGray);
        setBackground(new Color(255,255,210) );
        setLayout(null);


        // instantiate
        tk        = getToolkit();
        img       = tk.getImage("air.gif");

        tf_date   = new TextField("");

        canvas       = new PrintCanvas(filename);
        lbl_pageno   = new Label("Enter Page No:",Label.LEFT);
        tf_pageno    = new TextField("1",10);
        but_display  = new Button("Display");
        but_print    = new Button("Print");
        lbl_message  = new Label("MESSAGE / ACTION / ERROR",Label.LEFT);
        ta_message   = new TextArea();
        but_help     = new Button("Help");
        but_exit     = new Button("Exit");

        // set date 
        tf_date.setText( Validate.getDate() );


        // add()
        add(canvas);
        add(tf_date);
        add(lbl_pageno);
        add(tf_pageno);
        add(but_display);
        add(but_print);
        add(lbl_message);
        add(ta_message);
        add(but_help);
        add(but_exit);

        // addActionListener
        but_display.addActionListener(this);
        but_print.addActionListener(this);
        but_help.addActionListener(this);
        but_exit.addActionListener(this);

        // setBounds
        setBounds(0,0,800,600);
        tf_date.    setBounds(580,100,215, 25);

        canvas.     setBounds(  0,  0,450,600);
        lbl_pageno. setBounds(560,140, 80, 25);
        tf_pageno.  setBounds(660,140, 30, 25);
        but_display.setBounds(560,170, 60, 25);
        but_print.  setBounds(640,170, 60, 25);
        lbl_message.setBounds(470,215,350, 25);
        ta_message. setBounds(470,240,350,100);
        but_help.   setBounds(560,360, 60, 25);
        but_exit.   setBounds(640,360, 60, 25);

        pack();

        // final settings
        canvas.setBackground(Color.white);
        but_help.setVisible(false);
        tf_date.setEnabled(false);
        ta_message.setEditable(false);
        this.requestFocus();
    }

    public void actionPerformed(ActionEvent e)
    {
        if (e.getSource() == but_display)
        {
          try
          {
            // check whether it is integer
            Integer.parseInt(tf_pageno.getText());

            // check whether that file exists
            String f;
            File fname;

            f = tf_pageno.getText() + ".txt";
            fname = new File(f) ;

            if ( !fname.exists() )
            {
              ta_message.setText ("ERROR: File " + f + " does not exist" + "\n");
              ta_message.append  ("SOLUTION: " + "For more details kindly refer Help");
              return;
            }
            else
            {
              ta_message.setText ("");
            }

            // readfile , with write file flag false
            canvas.readFile(f,vec,"f");

            // display on screen
            canvas.repaint();

          }
          catch(Exception er)
          {
              ta_message.setText ("ERROR: Incorrect data entered" + "\n");
              ta_message.append  ("EXCEPTION:" + "[" + er + "]" + "\n");
              ta_message.append  ("SOLUTION: " + "For more details kindly refer Help");
          }
        } // end of display



        if (e.getSource() == but_print)
        {
            PrintJob pjob = getToolkit().getPrintJob(this,"Printing Flight Schedule",null);
            if (pjob != null)
            {
                Graphics pg = pjob.getGraphics();
                if (pg != null)
                {
                    canvas.printAll(pg);
                    pg.dispose(); // flush page
                }
                pjob.end();
            }
        } // end of print


        if (e.getSource() == but_help)
        {
           //
        } // end of help



        if (e.getSource() == but_exit)
        {
           this.dispose();
        } // end of exit

    } // end of action performed


    public void paint(Graphics g)
    {
      g.drawImage(img,450,45,350,40,this);
    } // end of paint


    // main
    public static void main(String[] args)
    {
        if ( args.length == 1)
        {
          fs fs = new fs(args[0]);
          fs.show();
        }
        else
        {
          System.out.println("Usage: java fs <text file>");
        }
    } // end of main


} // end of class

// ************ new class ***************

// PrintCanvas class
class PrintCanvas extends Canvas
{
    public Vector vec;
    public int i;

    public String       ss1,ss2,ss3,ss4,ss5,ss6,ss7,ss8,ss9;
    public int          pos1,pos2,pos3,pos4,pos5,pos6,pos7,pos8,pos9;

    PrintCanvas(String filename)
    {

        // initila values of positions
        pos1 = 0;
        pos2 = 10;
        pos3 = 19;
        pos4 = 24;
        pos5 = 37;
        pos6 = 44;
        pos7 = 57;
        pos8 = 64;
        pos9 = 73;

        // read the entire file with writeflag set to "t"
        readFile(filename,vec,"t");

        // read 1st file & display on screen
        readFile("1.txt",vec,"f");

        // display
        repaint();


    } // end of constructor 


    // method to read file
    public void readFile(String filename,Vector v,String flag)
    {
      try
      {
        int f = 1;
        v = new Vector();

        String s;       // stores each line read from the BufferedReader
        String tmp;     // stores the name of the country last read from the file/buffered reader
        int lineno;
        FileInputStream fis   = new FileInputStream(filename);
        InputStreamReader isr = new InputStreamReader(fis);
        BufferedReader br     = new BufferedReader(isr);

        tmp = "";
        lineno = 1;

        if (flag == "t")
        {
          while ( (s = br.readLine()) != null)
          {
            if ( !s.equals("") )
            {
               // country name + (contd.) to be added in case of pg. c/f
               if ( s.substring(0,4).equals("FROM") )
               {
                  tmp = s;
                  tmp = tmp + " - (CONTD.)";
                  // System.out.println(tmp);
               } // end 

               if (lineno >= 25) // 55
               {
                  if (  ((s.substring(0,4).equals("FROM"))) ||
                        ((s.indexOf("[") != -1) && (!s.substring(0,4).equals("FROM")))  )
                  {
                      writeFile(f,v);
                      // System.out.println(lineno);
                      v = new Vector();
                      f++;
                      lineno = 0;

                      // country name + (contd.) added in c/f page/file
                      if ( (s.indexOf("[") != -1) && (!s.substring(0,4).equals("FROM")) )
                      {
                          v.addElement(tmp);
                          v.addElement("");
                          lineno = lineno + 2;
                      }// end of adding country name

                  }
               }
            }
            v.addElement(s);
            lineno++;
          }
  
          writeFile(f,v);
          vec = v;
        
          br.close();
          fis.close();
        }
        else
        {
          while ( (s = br.readLine()) != null)
          {
            v.addElement(s);
            lineno++;
          }
          vec = v;
          br.close();
          fis.close();
        }
        // System.out.println(lineno);
      }
      catch(Exception er)
      {
         //ta_message.setText("ERROR: I/O error / File does not exist" + "\n");
         //ta_message.append  ("EXCEPTION:" + "[" + er + "]" + "\n");
         //ta_message.append  ("SOLUTION: " + "For more details kindly refer Help");
      }
  
    } // end of readfile method




    // method to write file
    public void writeFile(int f,Vector v) throws Exception
    {
        String outfilename ;
        outfilename = String.valueOf(f);
        outfilename = outfilename + ".txt";
        FileOutputStream fos   = new FileOutputStream(outfilename);
        OutputStreamWriter osw = new OutputStreamWriter(fos);
        BufferedWriter bw      = new BufferedWriter(osw);

        v.trimToSize();
        int count = v.size();

        for (i = 0; i < count ; i++)
        {
          String ss = (String)v.elementAt(i);
          ss = ss.trim();
          bw.write(ss);
          bw.newLine();
        }
        bw.flush();
        fos.close();
    } // end of write file method



    // method paint
    public void paint(Graphics g)
    {
        Font bold  = new Font("Arial",Font.BOLD,12);
        Font plain = new Font("Arial",Font.PLAIN,12);

        String tmp = "";
        int x=10;
        int y=40;

        vec.trimToSize();
        int count = vec.size();

        for (i = 0; i < count ; i++)
        {
          String s = (String)vec.elementAt(i);
          s = s.trim();

          if ( !s.equals("") )
          {

             if (s.length() >= 60)
             {
               if (s.length() >= 68)
               {
                 ss1 = s.substring( 0, 9);
                 ss2 = s.substring( 9,17);
                 ss3 = s.substring(17,24);
                 ss4 = s.substring(24,32);
                 ss5 = s.substring(32,40);
                 ss6 = s.substring(40,52);
                 ss7 = s.substring(52,60);
                 ss8 = s.substring(60,68);
                 ss9 = s.substring(68);
               }
               else
               {
                 ss1 = s.substring( 0, 9);
                 ss2 = s.substring( 9,17);
                 ss3 = s.substring(17,24);
                 ss4 = s.substring(24,32);
                 ss5 = s.substring(32,40);
                 ss6 = s.substring(40,52);
                 ss7 = s.substring(52,60);
                 ss8 = s.substring(60);
                 ss9 = "";
               }
             }
             else
             {
                s = s ;
                ss1 = ss2 = ss3 = ss4 = ss5 = ss6 = ss7 = ss8 = ss9 = "";
             }


             // determine whether it contains "[" and/or "FROM"
             if ( ( s.indexOf("[") != -1 ) &&  ( s.indexOf("FROM") != -1) )
             {
                g.setFont(plain);
                g.setColor(Color.red);
                g.drawString(s,x,y);
             }
             else if( ( s.indexOf("[") != -1 ) && ( s.indexOf("FROM") == -1) )
             {
                g.setFont(bold);
                g.setColor(Color.black);
                g.drawString(s,x,y);
             }
             else
             {
                g.setColor(Color.black);
                // determine whether it contains "*"
                if ( s.indexOf("*") != -1 ) // indicates change of flight
                {
                  tmp = s;
                  g.setFont(bold);  g.drawString(ss1,x+0  ,y);
                  g.setFont(plain); g.drawString(ss2,x+50 ,y);
                  g.setFont(plain); g.drawString(ss3,x+100,y);
                  g.setFont(bold);  g.drawString(ss4,x+150,y);
                  g.setFont(plain); g.drawString(ss5,x+200,y);
                  g.setFont(plain); g.drawString(ss6,x+250,y);
                  g.setFont(plain); g.drawString(ss7,x+300,y);
                  g.setFont(plain); g.drawString(ss8,x+350,y);
                  g.setFont(plain); g.drawString(ss9,x+380,y);
                }
                else // it does not contain "*"
                {
                  if ( tmp != "" ) // indicates continuation of previous line
                  {
                    g.setFont(plain); g.drawString(ss1,x+0  ,y);
                    g.setFont(plain); g.drawString(ss2,x+50 ,y);
                    g.setFont(plain); g.drawString(ss3,x+100,y);
                    g.setFont(plain); g.drawString(ss4,x+150,y);
                    g.setFont(bold);  g.drawString(ss5,x+200,y);
                    g.setFont(plain); g.drawString(ss6,x+250,y);
                    g.setFont(plain); g.drawString(ss7,x+300,y);
                    g.setFont(plain); g.drawString(ss8,x+350,y);
                    g.setFont(plain); g.drawString(ss9,x+380,y);
                  }
                  else // no continuation
                  {
                    g.setFont(bold);  g.drawString(ss1,x+0  ,y);
                    g.setFont(plain); g.drawString(ss2,x+50 ,y);
                    g.setFont(plain); g.drawString(ss3,x+100,y);
                    g.setFont(bold);  g.drawString(ss4,x+150,y);
                    g.setFont(bold);  g.drawString(ss5,x+200,y);
                    g.setFont(plain); g.drawString(ss6,x+250,y);
                    g.setFont(plain); g.drawString(ss7,x+300,y);
                    g.setFont(plain); g.drawString(ss8,x+350,y);
                    g.setFont(plain); g.drawString(ss9,x+380,y);
                  }
                  tmp = ""; // initialise
                }
             }
          } // end
          y=y+20;
        }
    } // end of paint


} // end of PrintCanvas class