// ==UserScript==
// @name         Twintail Negative Counting
// @version      v1
// @description  COUNT
// @author       kaitou
// @match        https://twintail.cafe/showthread.php?tid=177
// @match        https://twintail.cafe/showthread.php?tid=177&*
// @icon         https://twintail.cafe/favicon-dark.ico
// @grant        none
// ==/UserScript==

(function() {
  'use strict';

  let reply_box = document.getElementById("quick_reply_form").querySelector("div > textarea");
  let counts = document.querySelectorAll('[title="RE: Count to Negative One Million"]');
  let curr_count = Number(counts[counts.length-1].innerHTML.slice(1)); // #120 -> 120

  let next_count = curr_count + 1;
  let text = "[color=#1198F5]-" + next_count + "[/color]\n\n";
  reply_box.value = text;
})();