!752

answer {
  S rest = amIAddressed(s);
  if (getUserName() == null /* web */ || rest != null)
    miniChat("attn/" + (rest == null ? s : rest));
  else
    miniChat(""); // indicate we have nothing to say
}

static L<S> prefs = litlist("hi", "hey", "hello", "yo", "uhm", "oh", "dear", "dearest");
static L<S> names = litlist("eleu", "eleutheria", "computer", "bot");

// returns rest of input (without the greeting)
static S amIAddressed(S s) {
  new Matches m;
  for (S p : prefs)
    if (matchStart(p, s, m))
      s = m.rest();
  for (S name : names)
    if (matchStart(name, s, m))
      ret dropPunctuationFromStart(m.rest());
  ret null;
}

static S dropPunctuationFromStart(S s) {
  s = s.trim();
  while (!empty(s) && ",:!-.".indexOf(s.charAt(0)) >= 0)
    s = s.substring(1);
  ret s.trim();
}