// ==UserScript==// @name          YT video tab by default// @description   Open "Video" tab of youtube channel by default// @author        MK// @namespace     max44// @homepage      https://greasyfork.org/en/users/309172-max44// @match         *://*.youtube.com/*// @match         *://*.youtu.be/*// @icon          https://cdn.icon-icons.com/icons2/1488/PNG/512/5295-youtube-i_102568.png// @version       1.1.11// @license       MIT// @require       https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js// @run-at        document-idle// ==/UserScript==(function() {'use strict';var urlAtLastCheck = "";var divTabs = null;var divPreview = null;var divPostPreview = null;var waitHeader;var waitPreview;//Check URL changesconst rootCallback = function (mutationsList, observer) {if (urlAtLastCheck != document.location.href) {//console.log("new href: " + document.location.href);urlAtLastCheck = document.location.href;clearInterval(waitHeader); //Stop waiting for tabsclearInterval(waitPreview); //Stop waiting for previewopenVideoTab();}}const rootNode = document.querySelector("body");if (rootNode != null) {const rootObserver = new MutationObserver(rootCallback);rootObserver.observe(rootNode, {childList: true, subtree: true});}function openVideoTab() {var pathArray = window.location.pathname.split('/');var firstPath = pathArray[1];var lastPath = pathArray[pathArray.length - 1];//console.log("firstPath: " + firstPath + "   lastPath: " + lastPath);if (firstPath === "" || firstPath === "watch" || firstPath === "playlist" || firstPath === "r###lts" || firstPath === "feed" || firstPath === "gaming" || firstPath === "live" || lastPath === "search" || lastPath === "history" || lastPath === "featured" || lastPath === "videos" || lastPath === "shorts" || lastPath === "streams" || lastPath === "playlists" || lastPath === "community" || lastPath === "channels" || lastPath === "about") { //If not a channel or any channel's tab was selected//console.log("Not a channel or any tab is selected");} else { //If a channel with default tabwaitPreview = setInterval(function() { //Wait untile preview video loadeddivPreview = $( "ytd-channel-video-player-renderer video" ); //Get first section, where preview video can be locateddivPostPreview = $( "div#primary > ytd-section-list-renderer > div#contents > ytd-item-section-renderer:nth-child(1)" ); //Get first section after preview video//if (divPreview != null && divPreview.length > 0 && divPostPreview != null && divPostPreview.length > 0) {if (divPreview != null && divPreview.length > 0) {//console.log("preview is paused");document.querySelectorAll("ytd-channel-video-player-renderer video").forEach(videoPause); //Pause any channel preview video}//console.log("preview interval");}, 100);document.addEventListener("yt-navigate-finish", videoPause);waitHeader = setInterval(function() { //Wait untile header loadeddivTabs = $( "div#tabsContainer > div#tabsContent yt-tab-shape" ); //Get array of tabs as HTML elementsif (divTabs == null || divTabs.length < 2) {divTabs = $( "div#tabsContainer > div#tabsContent tp-yt-paper-tab" ); //Get array of tabs as HTML elements}if (divPostPreview != null && divPostPreview.length > 0 && divTabs != null && divTabs.length >= 2) {//Count visible tabsvar countVisible = 0;var i;var tabIndex = -1;for (i = 0; i < divTabs.length; i++) {if (isVisible(divTabs[i])) countVisible++;if (countVisible == 2) {//document.querySelectorAll("ytd-channel-video-player-renderer video").forEach(videoPause); //Pause any channel preview videotabIndex = i; //Video tab is 2nd visible}}if (countVisible >= 2) { //Enough number of visible tabs - normal channeldivTabs[tabIndex].click();//console.log("Video tab (" + tabIndex + ") is activated. Visible tabs: " + countVisible);}clearInterval(waitHeader); //Stop waiting for tabsclearInterval(waitPreview); //Stop waiting for preview}//console.log("header interval");}, 100);}}const videoPause = () => { //Pause medialet paused = false;input.addEventListener("play", () => {if (paused === false) {paused = true;input.pause();}});}function isVisible(pObj) { //Check all the parents of element to find whether it is visible or notif (pObj != null) {var checkNext = true;var vObj = pObj;while (checkNext) {checkNext = false;//console.log("checking element " + vObj.tagName + "#" + vObj.id + ": '" + document.defaultView.getComputedStyle(vObj,null)['display'] + "'");if (document.defaultView.getComputedStyle(vObj,null)['display'] != "none") {if (vObj.parentElement != null) {vObj = vObj.parentElement;checkNext = true;}} else {return false;}}return true;}return false;}})();