// Logic: asks Snippet MD5 Bot for current MD5

!752

m {

  static DiskTextMap map; // snippet ID to text

  p {

    map = new DiskTextMap("mymap");

    startBot("Snippet MD5 Bot", "#1002079");

    makeBot("Snippet Text Bot.");

  }

  static synchronized S answer(S s) {

    new Matches m;

    if (match3("what is the text of snippet *", s, m)) {

      S snippetID = formatSnippetID(m.unq(0));

      S answer = sendToLocalBot("Snippet MD5 Bot", "what is the md5 of snippet *", snippetID);

      assertTrue(match("the md5 of snippet * is *", answer, m));

      S md5 = m.unq(1);

      S text = map.get(snippetID);

      if (text == null || neq(md5(text), md5)) {

        text = loadSnippetVersion(snippetID, md5);

        if (text == null) ret "null";

        map.put(snippetID, text);

      }

      ret format("The text of snippet * is *.", snippetID, text);

    }

    if (match3("clear snippet text cache", s, m)) {

      clear();

      ret "OK.";

    }

    if (match3("get snippet text cache size", s, m)) {

      ret "Cache entries: " + map.size();

    }

    ret null;

  }

  static synchronized void clear() {

    map.clear();

  }

}