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Soundcloud:Sort comments by timestamp

Sort comments by timestamp on Soundcloud

  1. // ==UserScript==
  2. // @name Soundcloud:Sort comments by timestamp
  3. // @description Sort comments by timestamp on Soundcloud
  4. // @include *soundcloud.com/*
  5. // @grant none
  6. // @namespace https://greasyfork.org/users/4252
  7. // @version 0.0.1.20180417234419
  8. // ==/UserScript==
  9. //Note: Only been tested in firefox
  10. var SortButton = document.createElement("button");
  11. SortButton.type = "button";
  12. SortButton.className = "sc-button sc-button-medium sc-button-responsive";
  13. SortButton.innerHTML = "Sort by timestamp";
  14. SortButton.onclick = sortComments;
  15.  
  16. var CancelScrollButton = document.createElement("button");
  17. CancelScrollButton.type = "button";
  18. CancelScrollButton.className = "sc-button sc-button-medium sc-button-responsive";
  19. CancelScrollButton.innerHTML = "Cancel scrolling";
  20. CancelScrollButton.onclick = cancelLoadingComments;
  21.  
  22. var CancelScrollDiv = document.createElement("div");
  23. CancelScrollDiv.style = "display:none; position: fixed; bottom: 0; left: 0; right: 0; height: 80px; text-align:center;";
  24. CancelScrollDiv.appendChild(CancelScrollButton);
  25.  
  26.  
  27. (function() {//when page loads, add the buttons
  28.   XMLHttpRequest.prototype.__open = XMLHttpRequest.prototype.open;
  29.   XMLHttpRequest.prototype.open = function() {
  30.     this.addEventListener('load', function() {
  31.       if(this.readyState !== 4) return;
  32.       if(this.status !== 200) return;
  33.       if(/\/(tracks)/.test(this.responseURL)) {
  34.         appendButtons();
  35.       }
  36.     });
  37.     XMLHttpRequest.prototype.__open.apply(this, arguments);
  38.   };
  39. })();
  40.  
  41. function appendButtons() {
  42.     if (document.getElementsByClassName("commentsList__title").length && !document.getElementsByClassName("sort-button")[0]) {//if comment header exists and sort button hasn't already been added
  43.         document.getElementsByClassName("commentsList__title")[0].appendChild(SortButton);
  44.     }
  45.     if (!document.body.contains(CancelScrollDiv)) {//if cancel scroll button hasn't already been added
  46.         document.body.appendChild(CancelScrollDiv);
  47.     }
  48. }
  49.  
  50. function loadComments(){
  51.     CancelScrollDiv.style.display = "block";
  52.     window.myInterval = setInterval(function(){
  53.         window.scrollTo(0,document.body.scrollHeight);
  54.         if(document.getElementsByClassName("paging-eof").length){
  55.             cancelLoadingComments();
  56.             sortComments();
  57.             window.scrollTo(0,0);
  58.         }
  59.     }, 500);
  60. }
  61.  
  62. function cancelLoadingComments(){
  63.     clearInterval(myInterval);
  64.     CancelScrollDiv.style.display = "none";
  65. }
  66.  
  67. function sortComments() {
  68.     if (document.getElementsByClassName("paging-eof").length === 0) {
  69.         if (window.confirm("All comments must be loaded before sorting. Auto scroll to load?")) {
  70.             loadComments();
  71.         }
  72.         return;
  73.     }
  74.  
  75.     var commentContainer = document.getElementsByClassName("lazyLoadingList__list")[0];
  76.     var allcomments = [].slice.call(commentContainer.children);
  77.     var k = 0.001; //decimal to stick at end of timestamp so that threads (replies) stay together 
  78.     for (i = 0; i < allcomments.length; i++) {
  79.         if (allcomments[i].firstChild.classList.contains("isReply")) {
  80.             allcomments[i].setAttribute("data-timestamp4sort", getTimestampInSeconds(allcomments[i]) + k);
  81.             k = k + 0.001; //theoretically correctly sort 1000 consecutive replies
  82.         } else {
  83.             allcomments[i].setAttribute("data-timestamp4sort", getTimestampInSeconds(allcomments[i]));
  84.             k = 0.001; //reset
  85.         }
  86.     }
  87.  
  88.     allcomments.sort(compare);
  89.  
  90.     while (commentContainer.lastChild) {
  91.         commentContainer.removeChild(commentContainer.lastChild);
  92.     }
  93.  
  94.     var docFrag = document.createDocumentFragment();
  95.     for (i = 0; i < allcomments.length; i++) {
  96.         docFrag.appendChild(allcomments[i]);
  97.     }
  98.     commentContainer.appendChild(docFrag);
  99.  
  100.     alert("Comments sorted successfully");
  101. }
  102.  
  103.  
  104. function compare(a, b) {
  105.     var avalue = parseFloat(a.getAttribute("data-timestamp4sort"));
  106.     var bvalue = parseFloat(b.getAttribute("data-timestamp4sort"));
  107.     if (avalue < bvalue)
  108.         return -1;
  109.     if (avalue > bvalue)
  110.         return 1;
  111.     return 0;
  112. }
  113.  
  114. function hmsToSecondsOnly(str) { //This function handles "HH:MM:SS" as well as "MM:SS" or "SS".
  115.     var p = str.split(':'),
  116.         s = 0,
  117.         m = 1;
  118.  
  119.     while (p.length > 0) {
  120.         s += m * parseInt(p.pop(), 10);
  121.         m *= 60;
  122.     }
  123.  
  124.     return s;
  125. }
  126.  
  127. function getTimestampInSeconds(licomment) { //takes  the <li> element of a comment. returns an integer
  128.     if (licomment.getElementsByClassName("commentItem__timestampLink").length !== 0) {
  129.         return hmsToSecondsOnly(licomment.getElementsByClassName("commentItem__timestampLink")[0].innerHTML);
  130.     } else {
  131.         return 0;
  132.     }
  133. }