package koz;  // change to your andrew id!

// PLACE THIS FILE IN A DIRECTORY WITH YOUR andrewId AS ITS NAME!!!

// Wrapper class for Hw3.
// See comments in Hw2.java for more details.
 
import javax.swing.*;
import java.awt.*;
import java.lang.reflect.*;
import java.io.*;
import java.util.ArrayList;
// import java.util.Scanner; // do NOT import Scanner; use ours (see below!)

// Leave this class right here, as-is, so DrJava can see the first class in the file
// is the public class Hw3...
public class Hw3 extends Hw3Base { public static void main(String[] args) { Hw3Base.main(args); } }

// Change to set the first class that is displayed on launch
class StartWith { public static String startWith = "none"; } // eg:  "2"

class Hw3Q2 {
  public static Scanner scanner = new Scanner(System.in);
  public static void main(String[] args) {
    System.out.println("Place code for Q2 here!!!");
    int i = scanner.nextInt();
    System.out.println("read: " + i);
  }
}

class Hw3Q3 {
  public static void main(String[] args) {
    System.out.println("Place code for Q3 here!!!");
  }
}

class Hw3Q4 {
  public static void main(String[] args) {
    System.out.println("Place code for Q4 here!!!");
  }
}

class Hw3Q5 {
  public static void main(String[] args) {
    System.out.println("Place code for Q5 here!!!");
  }
}

class Hw3Q6 {
  public static void main(String[] args) {
    System.out.println("Place code for Q6 here!!!");
  }
}

class Hw3Q7 {
  public static void main(String[] args) {
    System.out.println("Place code for Q7 here!!!");
  }
}

class Hw3Q8_1 extends JComponent {
  public void paint(Graphics page) {
    Hw3.paintEmptyFlag(this,page,"Panama"); // REPLACE WITH YOUR CODE!
  }
}

class Hw3Q8_2 extends JComponent {
  public void paint(Graphics page) {
    Hw3.paintEmptyFlag(this,page,"Grenada"); // REPLACE WITH YOUR CODE!
  }
}

class Hw3Q8_3 extends JComponent {
  public void paint(Graphics page) {
    Hw3.paintEmptyFlag(this,page,"European Union"); // REPLACE WITH YOUR CODE!
  }
}

class Hw3Q8_4 extends JComponent {
  public void paint(Graphics page) {
    Hw3.paintEmptyFlag(this,page,"BONUS: Rotated Star"); // REPLACE WITH YOUR CODE!
  }
}

class Hw3Q8_5 extends JComponent {
  public void paint(Graphics page) {
    Hw3.paintEmptyFlag(this,page,"BONUS: St Pierre and Miquelon"); // REPLACE WITH YOUR CODE!
  }
}


//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
/////////////////           END OF YOUR CODE             /////////////////////
/////////////////  (you may ignore all the code below!!! /////////////////////
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////


// a simple Polygon renderer
class Polygon {
  ArrayList<Integer> xValues = new ArrayList<Integer>();
  ArrayList<Integer> yValues = new ArrayList<Integer>();
  public void addPoint(int x, int y) { xValues.add(x); yValues.add(y); }
  
  public void addPoints(int... values) {
    int points = values.length/2;
    for (int i=0; i<points; i++) {
      xValues.add(values[2*i]);
      yValues.add(values[2*i+1]);
    }
  }
  
  public void draw(Graphics page) { this.paint(page, false); }
  public void fill(Graphics page) { this.paint(page, true); }
  
  private int[] getInts(ArrayList<Integer> a) {
    int[] result = new int[a.size()];
    for (int i=0; i<a.size(); i++) result[i] = a.get(i);
    return result;
  }
  
  private void paint(Graphics page, boolean fill) {
    int[] x = getInts(xValues), y = getInts(yValues);
    if (fill) page.fillPolygon(x, y, x.length);
    else page.drawPolygon(x, y, x.length);
  }
}

// a replacement for the java.util.Scanner class that reads from the GUI
class Scanner {
  public Scanner() { }
  public Scanner(InputStream in) { this(); }
  
  public int nextInt() {
    int result = 0;
    String prompt = "Enter an integer:";
    while (true) {
      String s = read(prompt);
      try { result = Integer.parseInt(s); break; }
      catch (Exception e) { prompt = "Bad format, try again.  Enter an integer:"; }
    }
    return result;
  }
  
  public float nextFloat() {
    float result = 0;
    String prompt = "Enter an float:";
    while (true) {
      String s = read(prompt);
      try { result = Float.parseFloat(s); break; }
      catch (Exception e) { prompt = "Bad format, try again.  Enter a float:"; }
    }
    return result;
  }
  
  public double nextDouble() {
    double result = 0;
    String prompt = "Enter an double:";
    while (true) {
      String s = read(prompt);
      try { result = Double.parseDouble(s); break; }
      catch (Exception e) { prompt = "Bad format, try again.  Enter a double:"; }
    }
    return result;
  }
  
  public String next() {
    return read("Enter a string:");
  }
  
  public String nextLine() {
    return read("Enter a line of text:");
  }
  
  public String read(String prompt) {
    String result = JOptionPane.showInputDialog(Hw3Base.frame, prompt);
    if (result == null)
      throw new RuntimeException("Input canceled");
    return result;
  }
}

class Hw3Base implements java.awt.event.ActionListener {
  public static void paintEmptyFlag(JComponent c, Graphics page, String country) {
    paintEmptyComponent(c,page,"Flag of " + country + " goes here!!!");
  }

    
  public static void paintEmptyPP(JComponent c, Graphics page, String pp) {
    paintEmptyComponent(c,page,"Programming Project " + pp + " goes here!!!");
  }
  
  static Color[] bgColors = { Color.red, Color.yellow, Color.green, Color.orange };
  static java.util.Random random = new java.util.Random();
  static int bgIndex = random.nextInt(bgColors.length);
  static Color getBgColor() { return bgColors[++bgIndex % bgColors.length]; }
  
  public static void paintEmptyComponent(JComponent c, Graphics page, String msg) {
    int width = c.getWidth();
    int height = c.getHeight();
    page.setColor(getBgColor());
    page.fillRect(0,0,width,height);
    page.setColor(Color.black);
    page.setFont(new Font("Arial",Font.BOLD,18));
    page.drawString(msg,20,height/2);
  }
  
  public static JComponent initComponent(JComponent c) {
    c.setOpaque(true);
    return c;
  }
  
  public  static void main(String[] args) {
    new Hw3Base();
  }
  
  public void actionPerformed(java.awt.event.ActionEvent e) {
    launchQuestion(e.getActionCommand());
  }
  
  public void launchQuestion(String question) {
    String[] consoles = { "2", "3", "4", "5", "6", "7" };
    if (java.util.Arrays.asList(consoles).contains(question))
      launchConsoleViewer(question);
    else
      launchFlagViewer(question);
  }
  
  public void launchConsoleViewer(String question) {
    String className = packageName + ".Hw3Q" + question.replace(".","_");
    try {
      Class c = Class.forName(className);
      String[] argv = new String[]{};
      Class[] argTypes = { argv.getClass() };
      @SuppressWarnings("unchecked")
      Method mainMethod = c.getMethod("main",argTypes);
      launchConsoleMain(question,mainMethod);
    }
    catch (Exception e) { oops("Failed to load class: " + className,e); }
  }
  
  JTextArea console;
  JScrollPane consolePane;
  PrintStream realOut = System.out;
  PipedInputStream pin = new PipedInputStream();
  PipedOutputStream pout = makePout();
  PrintStream newOut = new PrintStream(pout,true);
  
  PipedOutputStream makePout() {
    try { return new PipedOutputStream(pin); }
    catch (Exception e) { oops("Cannot make pOut",e); return null; }
  }
  
  Thread reader = null;
  int readerDelay = 100;
  
  void startReader() {
    if (reader == null) {
      reader = new Thread(
                          new Runnable() { public void run() { runReader(); } });
      reader.start();
    }
  }
  
  void runReader() {
    try {
      while (true) {
        if (pin != null) {
          int available = pin.available();
          if (available > 0) {
            byte b[] = new byte[available];
            pin.read(b);
            String input = new String(b,0,b.length);
            console.append(input);
            if (realOut != null) realOut.print(input);
          }
        }
        try { reader.sleep(readerDelay);}catch(InterruptedException ie) {}
      }
    }
    catch (Exception e) { oops("Error in console runReader!",e); }
  }
  
  void launchConsoleMain(String question, final Method mainMethod) {
    console.setBackground(getBgColor());
    console.setText("Running " + question + ":\n");
    setMainComponent(consolePane);
    // use invokeLater so the consolePane displays before any user prompts
    SwingUtilities.invokeLater(new Runnable() {
      public void run() { runConsoleMain(mainMethod); }
    });
  }
  
  void runConsoleMain(final Method mainMethod) {
    try {
      System.setOut(newOut);
      startReader();
      readerDelay=100;
      mainMethod.invoke(null,new Object[]{null});
    }
    catch (Exception e) { oops("Error: " + e.getCause(),e.getCause()); }
    finally {
      readerDelay=100;
      System.setOut(realOut);
    }
  }
  
  void oops(String msg, Throwable e) {
    if (msg.contains("Input canceled")) msg = "Input canceled";
    else {
      System.err.println(msg);
      e.printStackTrace();
    }
    setMainComponent(new JLabel(msg));
  }
  
  public void launchFlagViewer(String question) {
    String qlabel = "Q"; // (question.startsWith("5")) ? "Q" : "PP";
    String className = packageName + ".Hw3" + qlabel + question.replace(".","_");
    try {
      Class c = Class.forName(className);
      JComponent jc = (JComponent) c.newInstance();
      setMainComponent(jc);
    }
    catch (Exception e) { oops("Failed to load class: " + className,e); }
  }
  
  JPanel cp; // set to outer frame's content pane
  JComponent mainComponent = null;
  String packageName;
  
  void setMainComponent(JComponent c) {
    if (mainComponent != null) cp.remove(mainComponent);
    mainComponent = c;
    cp.add(c);
    cp.revalidate();
  }
  
  public static final JFrame frame = new JFrame();
  
  public Hw3Base() {
    try { init(); }
    catch (Exception e) {
      e.printStackTrace();
      JOptionPane.showMessageDialog(null,
                                    "Exception in Hw3Base constructor: " + e.toString(),
                                    "ERROR!",
                                    JOptionPane.ERROR_MESSAGE);
    }
  }
  
  public void init() {
    String className = getClass().getName();
    if (!className.contains(".")) throw new RuntimeException("Packages not set up correctly!  Hw3 not in a package!");
    packageName = className.substring(0,className.lastIndexOf('.'));
    if ((packageName.equals("koz")) &&
        (!"Gretchen".equals(System.getenv("USERNAME"))) &&
        (!"David".equals(System.getenv("USERNAME")))) {
      JOptionPane.showMessageDialog(null,
                                    "Please change the package to your andrew id!",
                                    "Alert",
                                    JOptionPane.ERROR_MESSAGE);
      System.exit(1);
    }
    
    frame.setTitle(Hw3Base.class.getName());
    
    JPanel buttonPanel = new JPanel();
    buttonPanel.setLayout(new GridLayout(2,6));
    
    String[] buttonLabels = {
      "2", "3", "4", "5", "6", "7",
      "8.1", "8.2", "8.3", "8.4", "8.5"
    };
    for (int i=0; i<buttonLabels.length; i++) {
      JButton b = new JButton(buttonLabels[i]);
      b.addActionListener(this);
      buttonPanel.add(b);
    }
    
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container frameCp = frame.getContentPane();
    frameCp.setLayout(new BorderLayout());
    cp = new JPanel();
    cp.setLayout(new BorderLayout());
    cp.setBackground(Color.white);
    frameCp.add(new JScrollPane(buttonPanel),BorderLayout.NORTH);
    frameCp.add(cp,BorderLayout.CENTER);
    
    console = new JTextArea();
    console.setFont(new Font("Arial",Font.BOLD,16));
    console.setText("No program running.");
    consolePane = new JScrollPane(console);
    console.setEditable(false);
    setMainComponent(consolePane);
    
    String startWith = StartWith.startWith;
    if ((startWith != null) && (!"none".equals(startWith)))
      launchQuestion(StartWith.startWith);
    
    frame.setSize(600,400);
    frame.setVisible(true);
  }
}