!636 // for includes
!stringfunc {

!1000868 // dialogHandler shortcut

!include #1001065 // Dialog classes

static int answerQuestions_defaultPort = 5000;

static void answerQuestionsOnPort(final StringFunc f) {
  answerQuestionsOnPort(answerQuestions_defaultPort, f);
}

static void answerQuestionsOnPort(int port, final StringFunc f) {
  startDialogServer(port, dialogHandler {
    String dialogID = randomID(8);
    
    io.sendLine("Your ID: " + dialogID);
    
    while (io.isStillConnected()) {
      if (io.waitForLine()) {
        String line = io.readLineNoBlock();
        S s = dialogID + " at " + now() + ": " + quote(line);
        print(s);
        if (line == "bye") {
          io.sendLine("bye stranger");
          return;
        }
        S answer = answerQuestions_getAnswer(line, f);
        io.sendLine(answer == null ? "null" : answer);
        //appendToLog(logFile, s);
      }
    }
  });
}

static S answerQuestions_getAnswer(S line, StringFunc f) {
  S answer;
  try {
    answer = f.get(line);
  } catch (Throwable e) {
    e.printStackTrace();
    answer = e.toString();
  }
  print("> " + answer);
  return answer;
}

static void answerQuestionsOnPortAndConsole(final StringFunc f) {
  answerQuestionsOnPortAndConsole(answerQuestions_defaultPort, f);
}

static void answerQuestionsOnPortAndConsole(int port, final StringFunc f) {
  answerQuestionsOnPort(port, f);
  print("You may also type on this console.");
  S line;
  while ((line = readLine()) != null) {
    if (line == "bye")
      print("! bye stranger");
    else
      answerQuestions_getAnswer(line, f); // prints answer on console too
  }
}