!7

static L<WebNode> instructions;
static volatile L<WebNode> topic;
static WebNode source;

p {
  typicalDownload();
  instructions = indexedNodes("If starts with");
  bot();
  centerBiggerConsole();
  consoleInput("What do you know about Gaga?");
  askButton();
}

answer {
  if "source" ret source.web.source;
  if "index" { pnl(keys(cachedNodeIndex())); ret "-"; }
  
  for (WebNode instruction : instructions) {
    WebNode op = web_operand(instruction);
    if (matchStart(web_unquote(op), s, m)) {
      WebNode i = web_operand(op);
      S what = web_text(i);
      if (eqic(what, "get topic $1")) {
        getTopic(m.rest());
        ret anyFactAbout(source = first(topic));
      } else
        ret "huh? " + what;
    }
  }
}

svoid getTopic(S topic) {
  main.topic = indexedNodes(topic);
  print("Got topic: " + topic + " => " + n(main.topic, "node"));
}

sS anyFactAbout(WebNode node) {
  if (node == null) ret "No idea";
  Triple<WebNode, S, WebNode> t = web_mostInterestingConnection(node);
  if (t == null) ret "No idea about " + node;
  ret web_text(t.a) + " " + t.b + " " + web_text(t.c) + ".";
}