!747

m {
  p {
    makeAndroid3("Text Bot.");
  }
  
  static synchronized S answer(S s) {
    new Matches m;
    
    if (match3("get text for md5 *", s, m)) {
      S text = getTextForMd5(unquote(m.m[0]));
      ret text == null ? "Sorry." : format3("text: *", text);
    }
    
    if (match3("do you have md5 *?", s, m)) {
      File file = getTextFile(unquote(m.m[0]));
      boolean yes = file.exists();
      ret yes ? "Yes (" + file.length() + " bytes)." : "No.";
    }
    
    if (match3("store text *", s, m)) {
      S text = unquote(m.m[0]);
      S md5 = storeText(text);
      ret format3("OK, stored. md5: *", md5);
    }
    
    if (match3("delete md5 *", s, m)) {
      S md5 = unquote(m.m[0]);
      getTextFile(md5).delete();
      return "OK.";
    }
    
    if (match3("n", s)) {
      return "" + length(getProgramDir().listFiles());
    }
    
    if (match3("list md5s", s)) {
      File[] files = getProgramDir().listFiles();
      new L<S> md5s;
      if (files != null) for (File f : files) {
        if (f.getName().endsWith(".txt"))
          md5s.add(f.getName().substring(0, 32).toLowerCase());
      }
      return structure(md5s);
    }
    
    ret null;
  }
  
  static S storeText(S text) {
    S md5 = md5(text);
    saveTextFile(getTextFile(md5), text);
    return md5;
  }
  
  static File getTextFile(S md5) {
    verifyMD5(md5);
    return new File(programDir(), md5 + ".txt");
  }
  
  static S getTextForMd5(S md5) {
    return loadTextFile(getTextFile(md5));
  }
}