!759

!include #1004810 // Concepts etc.

//include #1004817 // externalize stuff (repeat less code)

// What we think the user chose

sclass OptionChosen extends Concept {

  new Ref<UserAnswer> userAnswer;

  S choice;

}

extend Answer {

  new Ref<OptionChosen> inResponseTo;

}

p {

  loadConcepts();

  autoSaveConcepts();

  action();

}

static void processNewUserLine(UserLine ul) {

  S s = trim(ul.post.text);

  if (swic(s, "?id ")) { // assume "?id music"

    // action: ask user what he means by "music"

    S q = trim(s.substring(2));

    print("ul= " + structure(ul));

    Question question = findBackRefOfType(ul, Question.class);

    print("Question = " + struct(question));

    // did we ask this yet? if not: do it

    if (question == null) {

      S text = "Uh... do you want some MUSIC or the MUSIC PLAYER?";

      UserLine ulQ = postToChat(text);

      if (ulQ == null) { print("Couldn't post!"); ret; }

      question = new Question;

      question.userLine.set(ulQ);

      question = new Question(ul);

    }

  }

}

static void dbActions {

  // Scan through the answers we got from user and do something

  // with them.

  L<UserAnswer> userAnswers = conceptsOfType(UserAnswer.class);

  //printStructure("User Answers: ", userAnswers);

  for (UserAnswer ua : userAnswers) {

    // We only ask one question, so we know what this is about

    ELPost post = ua.userLine.get().post;

    //print("Processing: " + post.text);

    OptionChosen option = findBackRef(ua, OptionChosen.class);

    if (option == null) {

      // Interpret & save what user has said (-> "OptionChosen")

      option = new OptionChosen;

      option.userAnswer.set(ua);

      option.choice = getOption(trim(post.text));

      // VERIFY new link

      assertSame(option, findBackRef(ua, OptionChosen.class));

    }

    // Check if we answered already.

    Answer ourAnswer = findBackRef(option, Answer.class);

    if (ourAnswer != null) {

      //print("  We answered already.");

    } else {

      ourAnswer = new Answer;

      ourAnswer.inResponseTo.set(option);

      // VERIFY that we solved the condition above

      assertSame(ourAnswer, findBackRef(option, Answer.class));

      S text = makeAnswer(option);

      UserLine ulA = postToChat(text);

      if (ulA == null) { print("Couldn't post!"); ret; }

      ourAnswer.userLine.set(ulA);

    }

  }

}

// learnable! [interpret user input]

// returns "music", "player" or null (any unknown input)

static S getOption(S s) {

  if (containsIgnoreCase(s, "player")) ret "player";

  if (containsIgnoreCase(s, "music")) ret "music";

  null;

}

static S makeAnswer(OptionChosen option) {

  if (eq(option.choice, "player"))

    ret "Current Music Player Is: " + snippetWithTitle("#1003779");

  if (eq(option.choice, "music"))

    ret "Here's some polish music: " + snippetWithTitle("#1001093");

  ret "I don't understand";

}