!752

static S atEleuPrefix = "<@u0hb7bpkm>";

static int maxLen = 100;

static PersistentMap<S, S> inToOut;

static S last;

p {

  inToOut = new PersistentMap("inToOut");

  load("last");

}

synchronized answer {

  if (neq(getChannel(), "devchannel, #talkingbots")) null;

  if (match("clear ua ub uc", s) && master()) {

    inToOut.clear();

    ret getProgramID() + " cleared";

  }

  s = s.trim();

  boolean at = startsWithIgnoreCase(s, atEleuPrefix);

  if (at)

    s = dropPrefixIgnoreCase(atEleuPrefix, s);

  S in = simplifySentence2(s);

  saveIt(s, in, at);

  S out = inToOut.get(in);

  print("1002967: in=" + in + ", out=" + out);

  if (nempty(out)) {

    // TODO: bump in LRU

    ret out;

  }

}

static void saveIt(S s, S in, boolean at) {

  S lastOut = getLastOut();

  if (nempty(lastOut))

    saveEntry(lastOut, s);

  if (!at && nempty(last))

    saveEntry(last, s);

  last = s;

  save("last");

}

static void saveEntry(S in, S out) {

  if (l(in) > maxLen || l(out) > maxLen) ret;

  in = simplifySentence2(in);

  print(getProgramID() + " saving: " + in + " -> " + out);

  inToOut.put(in, out);

}

static S getLastOut() {

  ret (S) callOpt(getBot("#1002979"), "getLastAnswer");

}