SoundCloud Better Shuffle

real-shuffle.js

/**
 * This script adds a button to soundcloud web that will simulate a scroll to the playlist and finally shuffles it.
 * This way, it'll shuffle all the musics
 */

function docReady(fn) {
  if (
    document.readyState === "complete" ||
    document.readyState === "interactive"
  ) {
    setTimeout(fn, 1);
  } else {
    document.addEventListener("DOMContentLoaded", fn);
  }
}
var onDocReady = () => {
  var success = addSuffleLikesBtn();
  if (success) return;
  setTimeout(onDocReady, 5000);
};

try {
	setTimeout(function(){docReady(onDocReady);},3000);
} catch(e) {
	console.error(e)
}

function addSuffleLikesBtn() {
  var filterSearch = document.querySelector(".header__right");
  console.log(filterSearch);
  if (!filterSearch) return false;

  var btn = document.createElement("button");
  btn.id = "custom shuffle like";
  btn.classList.add("sc-button", "sc-button-cta");
  btn.style = "margin: 10px 2px; float: left;";
  btn.innerText = "shuffle current";

  filterSearch.insertAdjacentElement("afterbegin", btn);

  btn.addEventListener("click", function () {
    var playlist = document.querySelector(".queue__scrollableInner");
    var shuffleButton = document.querySelector(".shuffleControl");
    
    let int = setInterval(() => {
      playlist.scrollTop = playlist.scrollHeight;
    }, 700);
    setTimeout(() => {
      clearInterval(int);
      
      if (shuffleButton.classList.contains("m-shuffling")) {
        shuffleButton.click();
        setTimeout(function(){shuffleButton.click();});
      } else {
        shuffleButton.click();
      }
    }, 20000);
  });

  return true;
}