import java.net.*;
import java.io.*;
import javax.swing.*;
import java.util.regex.*;
import java.util.*;
// Syntax: dialogHandler { doSomething(io); }


public class main {
  public static void main(String[] args) throws Exception {
    String s = loadMainJava();
    
    Pattern regex = Pattern.compile("dialogHandler\\s*\\{");
    
    for (int i = 0; i < 100; i++) {
      Matcher matcher = regex.matcher(s);
      if (!matcher.find())
        break;

      System.out.println("Iteration " + (i+1));
      int start = matcher.start(), end = matcher.end();
      int endOfBlock = findEndOfBlock(s, end);
      
      String listener = "new DialogHandler() {\n" +
        "public void run(final DialogIO io) {\n" +
        s.substring(end, endOfBlock) + "\n}";
      s = s.substring(0, start) + listener + s.substring(endOfBlock);
    }
    
    saveMainJava(s);
  }
  
  // start is the index AFTER the opening bracket
  // returns index OF closing bracket
  static int findEndOfBlock(String s, int start) {
    int level = 1;
    for (int i = start; i < s.length(); i++) {
      if (s.charAt(i) == '{') ++level;
      else if (s.charAt(i) == '}') --level;
      if (level == 0)
        return i;
    }
    return s.length();
  }

  static String loadMainJava() throws IOException {
    return loadTextFile("input/main.java", "");
  }

  static void saveMainJava(String s) throws IOException {
    saveTextFile("output/main.java", s);
  }

  /** writes safely (to temp file, then rename) */
  public static void saveTextFile(String fileName, String contents) throws IOException {
    File file = new File(fileName);
    File parentFile = file.getParentFile();
    if (parentFile != null)
      parentFile.mkdirs();
    String tempFileName = fileName + "_temp";
    FileOutputStream fileOutputStream = new FileOutputStream(tempFileName);
    OutputStreamWriter outputStreamWriter = new OutputStreamWriter(fileOutputStream, "UTF-8");
    PrintWriter printWriter = new PrintWriter(outputStreamWriter);
    printWriter.print(contents);
    printWriter.close();
    if (file.exists() && !file.delete())
      throw new IOException("Can't delete " + fileName);

    if (!new File(tempFileName).renameTo(file))
      throw new IOException("Can't rename " + tempFileName + " to " + fileName);
  }

  public static String loadTextFile(String fileName, String defaultContents) throws IOException {
    if (!new File(fileName).exists())
      return defaultContents;

    FileInputStream fileInputStream = new FileInputStream(fileName);
    InputStreamReader inputStreamReader = new InputStreamReader(fileInputStream, "UTF-8");
    return loadTextFile(inputStreamReader);
  }

  public static String loadTextFile(Reader reader) throws IOException {
    StringBuilder builder = new StringBuilder();
    try {
      BufferedReader bufferedReader = new BufferedReader(reader);
      String line;
      while ((line = bufferedReader.readLine()) != null)
        builder.append(line).append('\n');
    } finally {
      reader.close();
    }
    return builder.length() == 0 ? "" : builder.substring(0, builder.length()-1);
  }
}