import java.lang.*;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
/**
 * @author Andi Gramm
 * @version 1.0
 */

public class Terminal extends Frame {

  public Concert concert;
  public Panel[] Pans;
  public Panel PanN, PanC;
  public TextField textField1, textField2;
  public Button res, ref;


  /** Initializes the Form */
  public Terminal(Concert C) {
    super("Terminal");
    concert = C;
    initComponents ();
    addWindowListener (new java.awt.event.WindowAdapter () {
        public void windowClosing (java.awt.event.WindowEvent evt) { System.exit(0); }
      } );
    setSize(300,210);
  }


  private void initComponents () {

    setLayout (new java.awt.BorderLayout());

    PanN = new Panel();
    PanN.setLayout (new FlowLayout ());
    PanC = new Panel();
    PanC.setLayout (new FlowLayout ());
//    PanC.setLayout (new GridLayout ());

    textField1 = new TextField("SeatNr", 6);
    PanN.add (textField1);

   textField2 = new TextField("", 20);
   textField2.setEditable(false);

    res = new Button ();
    res.setLabel ("Reserve");
    res.addActionListener (new java.awt.event.ActionListener () {
        public void actionPerformed (java.awt.event.ActionEvent evt) { resActionPerformed (evt); }
    } );
    PanN.add (res);

    ref = new Button ();
    ref.setLabel ("Refresh");
    ref.addActionListener (new java.awt.event.ActionListener () {
        public void actionPerformed (java.awt.event.ActionEvent evt) { refActionPerformed (evt); }
    } );
    PanN.add (ref);

     Pans = new Panel[21];
     for (int i=0; i<Pans.length; i++) {
         Pans[i] = new Panel();
         Pans[i].add(new Label(""+(i+1)));
         Pans[i].setBackground(Color.green);
         PanC.add(Pans[i]);
     }

    add(PanN, "North");
    add(PanC, "Center");
    add (textField2, "South");

  }


  private void refActionPerformed (java.awt.event.ActionEvent evt) {
      //refresh
      textField2.setText("");
      for (int i=0; i<concert.S.length; i++) if (concert.S[i].isReserved()) Pans[i].setBackground(Color.red); 
      textField1.setText ("SeatNr");
  }

  private void resActionPerformed (java.awt.event.ActionEvent evt) {
       //reserve !
      boolean success = true;
      if (concert.S[(Integer.parseInt(textField1.getText()))-1].isReserved()) {
           textField2.setText("Sitz ist bereits reserviert.");
           success = false;
      }
      concert.S[(Integer.parseInt(textField1.getText()))-1].reserve(); concert.S[(Integer.parseInt(textField1.getText()))-1].reserve(); 
      if (success) {
          textField2.setText("Sitz wurde erfolgreich reserviert!");
          Pans[(Integer.parseInt(textField1.getText()))-1].setBackground(Color.red);           
          textField1.setText ("SeatNr");
    }
  }


}