YouTube - Enable Live Chat By Default

Automatically changes the chat view to Live Chat when it loads. (Works with chat replays, too.)

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

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

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

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

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

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

(I already have a user script manager, let me install it!)

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.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name        YouTube - Enable Live Chat By Default
// @namespace   Violentmonkey Scripts
// @description Automatically changes the chat view to Live Chat when it loads. (Works with chat replays, too.)
// @match       https://www.youtube.com/live_chat*
// @include     https://*youtube.*/live_chat*
// @include     https://www.youtube.*/live_chat*
// @include     https://www.youtube.*/live_chat
// @grant       none
// @version     1.0.1
// @author      Jupiter Liar
// @license     CC BY
// @description 3/18/2024, 4:00:00 PM
// ==/UserScript==

(function() {
    'use strict';

    var maxAttempts = 400;
    var currentAttempt = 0;

    // Function to switch chat mode to "Live Chat"
    function changeToLiveChat(liveChatSelector) {
        //console.log("Live chat selector found.");
        // Check if the live chat selector exists
        if (liveChatSelector) {
            // Click the tp-yt-paper-button to switch to "Live Chat" mode
            var paperButton = liveChatSelector.querySelector('tp-yt-paper-button');
            if (paperButton) {
                paperButton.click();
                //console.log("Attempting to switch to Live Chat mode...");
                checkPaperMenuItems();
            } else {
                //console.log("tp-yt-paper-button not found within live chat selector.");
            }
        }
    }

    // Function to click on the appropriate paper item in the paper menu
    function checkPaperMenuItems() {
        var paperMenuItems = document.querySelectorAll('tp-yt-paper-item');
        var foundLiveChat = false;
        var foundUnselected = false;

        paperMenuItems.forEach(function(item) {
            var text = item.innerText.toLowerCase();
            if (text.includes("live chat")) {
                item.click();
                //console.log("Clicked on paper item with 'Live chat'.");
                foundLiveChat = true;
            } else {
                var parentAnchor = item.closest('a');
                if (parentAnchor && parentAnchor.getAttribute('aria-selected') === "false") {
                    item.click();
                    //console.log("Clicked on unselected paper item.");
                    foundUnselected = true;
                }
            }
        });

        if (!foundLiveChat && !foundUnselected) {
            //console.log("Unable to find appropriate paper menu item.");
        }
    }

    // Function to check if the page contains the live chat selector
    function checkLiveChatSelector() {
        //console.log("Attempting to run Live Chat changer script.");
        var liveChatSelector = document.querySelector('#live-chat-view-selector-sub-menu');
        if (liveChatSelector) {
            changeToLiveChat(liveChatSelector);
        }
    }

    // Execute when the page and its resources are fully loaded
    window.onload = checkLiveChatSelector;
})();