Newgrounds Video Download Button (1080p ONLY)

// ==UserScript==
// @name         NewGrounds Video Download Button (Simple)
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Send a fetch request to Newgrounds asking for the info to that video (using the credentials stored in the browser).
// @author       XenoTheStrange@jami.net
// @match        https://www.newgrounds.com/portal/view/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=newgrounds.com
// @grant        none
// ==/UserScript==

(function(){
    'use strict';
    var obj;
    var command = `fetch(\"https://www.newgrounds.com/portal/video/VIDEOID\", {
    \"credentials\": \"include\",
    \"headers\": {
        \"User-Agent\": \"Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Firefox/91.0\",
        \"Accept\": \"application/json, text/javascript, */*; q=0.01\",
        \"Accept-Language\": \"en-US,en;q=0.5\",
        \"X-Requested-With\": \"XMLHttpRequest\",
        \"Sec-Fetch-Dest\": \"empty\",
        \"Sec-Fetch-Mode\": \"cors\",
        \"Sec-Fetch-Site\": \"same-origin\"
    },
    \"referrer\": \"https://www.newgrounds.com/portal/view/VIDEOID\",
    \"method\": \"GET\",
    \"mode\": \"cors\"
})
  .then(res => res.json())
  .then(data => obj = data)
  .then(() => createButton(obj.sources["1080p"][0].src))`
    var tmp = eval(command.replaceAll("VIDEOID", document.location.href.split("/")[5]))

    function createButton(string){
        console.log(string)
        var button = document.createElement("a")
        button.href = string
        button.innerHTML = "Download"
        document.querySelector(".ng-video-controls").appendChild(button)
    }
})();