!752

static class Msg {
  S user, text;
  
  *(S *user, S *text) {}
  *() {}
}

// persistent
static PersistentLog<Msg> msgs;

// built every time in memory
static new MultiMap<S, Msg> msgsByUser;

p {
  msgs = new PersistentLog<Msg>("incoming-msgs");
  for (Msg m : msgs) pcall { answer(m.text, m.user); }
  
  makeBot("I Have Bot.");
}

static S answer(S s) {
  ret answer(s, "user");
}

static synchronized S answer(S s, S user) {
  msgs.add(new Msg(user, s));
  new Matches m;
  ret answerImpl(user);
  msgsByUser.put(m.user, m);
  if (matchStart("i have", s, m)) {
    print(structure(m));
    S rest = m.rest();
    print("Rest: " + quote(rest));
    ret "ok";
  }
}