Ubik Academy - automatically extend lab time

[EN] Extend the time the lab is usable when the timer is below 10 minutes

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name           Ubik Academy - automatically extend lab time
// @version        0.3
// @namespace      nil
// @author         nil
// @grant          none
// @description    [EN] Extend the time the lab is usable when the timer is below 10 minutes
// @include        https://cyberkube.app/?token=*
// @license        GPLv3
// ==/UserScript==

(function nil_greasemonkey_ubik_extendlab() {
  "use strict";
  function checkTimerAndPotentiallyExtendLab() {
    let elt = document.getElementById("timer");
    // "01h : 53m : 35s"
    if (!elt || 9 >= elt.innerText.length) return;
    let remaining_seconds = elt.innerText
				.replace(/[hms\s]/g, "")
         		        .split(':')
    				.map(Number)
    				.reverse()
    				.reduce((acc, elt, idx) => acc + elt * 60**idx, 0);
    // do nothing if more than 10 minutes left (600 seconds)
    if (600 <= remaining_seconds) return;

    let extendBtn = document.getElementById("extend-btn");
    if (!extendBtn) { console.log("#extend-btn element not found"); return; }

    console.log("clicked the extend lab button!");
    extendBtn.click();

    // wait 20 s then refresh the page
    window.setTimeout(() => location.reload(), 20000);
  }
  
  window.setInterval(checkTimerAndPotentiallyExtendLab, 60000);
})();