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!7

sS theRiddle = [[
  X is the first word in x.
  Is x a letter (1) or a program (2)?
]];

sS theFacts = [[
  "!" is a typical first word in a program.
  "Hello" is a typical first word in a letter.
  cdtwmxtqspigpyap confirms mibnjwgfxnetaxyz.
]];

static JTextArea ta;
static L<AIConcept> usedConcepts;
static new L<Lisp> facts;

p-substance {
  aiEnhancements();
  
  usedConcepts = findAIConcepts(
    "rplldtbwbbnlrotj kjuwvfidiwmbjsuc xzhtvnqwzuuzixci mibnjwgfxnetaxyz cdtwmxtqspigpyap kdpoqkaoypqenusd");

  // set englishToConceptLanguage_xyz_debug;
  facts = clParse(linesToCL(theFacts));
  
  ta = showText("");
  onChangeAndNow(ta, r {
    fS text = getText(ta);
    thread { think(text); }

  });
  requestFocus(ta);
}

sS firstWord(S s) {
  if (empty(s)) ret "";
  if (isLetterOrDigit(first(s)))
    ret takeCharsWhile(s, f isLetterOrDigit);
  else ret "" + first(s);
}

svoid think(S text) {
  time {
    S w = firstWord(text);
    
    S riddle = formatXYZ(theRiddle, quote(w));
    print(riddle);
    L<Lisp> localFacts = concatLists(facts,
      clParse(sentencesToCL(riddle)));
    
    int answer = solveRiddle(localFacts);
    S type = answer == 1 ? "letter" : answer == 2 ? "program" : null;
    print("Answer: " + or2(type, "?"));
    titleStatus_trailing(ta, empty(type) ? null : "Writing a " + type);
  }
}

static L<S> sentencesToCL(S text) {
  ret listToCL(splitIntoSentences(text));
}
  
static L<S> linesToCL(S text) {
  ret listToCL(toLinesFullTrim(text));
}

static L<S> listToCL(L<S> l) {
  englishToConceptLanguage_concepts.set(usedConcepts);
  new L<S> out;
  for (S line : l) {
    S c = englishToConceptLanguage(line);
    print(line + " => " + c);
    out.add(c);
  }
  ret out;
}

static int solveRiddle(L<Lisp> facts) {
  // Find the question
  Lisp q = findHead(facts, "rplldtbwbbnlrotj");
  if (q == null) fail("No question found");
  S pivot = q.s(0);
  L<S> candidates = ll(q.s(1), q.s(2));
  new Best<Int> best;
  for i over candidates: {
    S candidate = candidates.get(i);
    new Web web;
    web.newNode(pivot, candidate);
    for (Lisp fact : facts)
      web.relation(fact);
    int score = countConfirms(web, facts);
    if (score > 0)
      best.put(i+1, score);
  }
  ret toInt(best.get());
}

static int countConfirms(Web web, L<Lisp> facts) {
  int score = 0;
  for (Lisp fact : filterByHead(facts, "kdpoqkaoypqenusd")) {
    S a = fact.s(0), b = fact.s(1);
    for (WebNode rel : values(web.relations))
      if (rel.hasLabel(a) && rel.hasLabel(b))
        ++score;
  }
  ret score;
}

sclass WebNode {
  new L<S> labels;
  
  void addLabel(S label) {
    setAdd(labels, label);
  }
  
  bool hasLabel(S label) { ret labels.contains(label); }
}

sclass Web {
  new L<WebNode> nodes;
  Map<Pair<WebNode>, WebNode> relations = new HashMap;
  
  void relation(Lisp l) {
    if (l(l) != 2) ret;
    getRelation(l.s(0), l.s(1)).addLabel(l.head);
  }
  
  WebNode getRelation(S a, S b) {
    Pair<WebNode> p = pair(findNode(a), findNode(b));
    WebNode r = relations.get(p);
    if (r == null) relations.put(p, r = new WebNode);
    ret r;
  }
  
  WebNode findNode(S s) {
    for (WebNode n : nodes)
      if (n.labels.contains(s))
        ret n;
    ret newNode(s);
  }
  
  WebNode newNode(S... labels) {
    new WebNode n;
    for (S label : labels) n.addLabel(label);
    nodes.add(n);
    ret n;
  }
}