Calm Down YouTube

Converts titles on YouTube to be less obnoxious.

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         Calm Down YouTube
// @version      1.3
// @description  Converts titles on YouTube to be less obnoxious.
// @author       Ryan Poole
// @match        *://www.youtube.com/*
// @run-at        document-start
// @namespace https://greasyfork.org/users/48078
// ==/UserScript==

var channels = ['Hat Films', 'YOGSCAST Lewis & Simon'];

var acronyms = ['GTA', 'TTT'];

function transformTitle (title) {
    var splitTitle = /(.*?)(\((.*)\))?$/.exec(title.trim());
    var gameName = splitTitle[3];
    var videoName = splitTitle[1];
    var newName = ((gameName ? gameName.trim() + " - "  : "") + videoName.trim()).toLowerCase();
    acronyms.forEach(function(a) {
        newName = newName.replace(a.toLowerCase(), a.toUpperCase());
    });
    return newName;
}

var observer = new MutationObserver(parsePage);

function onPageLoad () {
    setupObservers();
    parsePage();
}

function setupObservers () {
    observer.disconnect();
    var elsToObserve = ['.section-list', '.branded-page-v2-body', '.channels-browse-content-grid', '#pl-load-more-destination', '#watch-more-related'];
    var el;
    elsToObserve.forEach(function(elName) {
        if ((el = document.querySelector(elName)) !== null) {
            observer.observe(el, {childList:true});
        }
    });
}

function parsePage () {
    var titleEls = [];

    var pageChannelNameEl = document.querySelector('.branded-page-header-title-link');

    function parseDOMList (opts) {
        var listSelector = opts.list || null;
        var nameSelector = opts.name || null;
        var titleSelector = opts.title || null;
        var videos = document.querySelectorAll(listSelector);
        for (var i = 0; i < videos.length; i++) {
            var currentVideoEl = videos[i];
            var currentNameEl = currentVideoEl.querySelector(nameSelector);
            var channelName = (currentNameEl !== null ? currentNameEl.textContent : null) || (pageChannelNameEl !== null ? pageChannelNameEl.text : null) || null;
            if (channelName === null) {
                continue;
            }
            if (channels.includes(channelName)) {
                titleEls.push(currentVideoEl.querySelector(titleSelector));
            }
        }
    }

    parseDOMList({
        list:'.yt-lockup-content',
        name:'.yt-lockup-byline>a',
        title:'.yt-lockup-title>a'
    });

    parseDOMList({
        list:'.lohp-media-object-content',
        name:'.content-uploader>a',
        title:'.lohp-video-link'
    });

    parseDOMList({
        list:'.pl-video',
        name:'.pl-video-owner>a',
        title:'.pl-video-title>a'
    });

    parseDOMList({
        list:'.video-list-item',
        name:'.g-hovercard',
        title:'.title'
    });

    parseDOMList({
        list:'.playlist-video',
        name:'.video-uploader-byline>span',
        title:'h4'
    });

    parseDOMList({
        list:'.video-detail',
        title:'h3>a'
    });

    parseDOMList({
        list:'.lohp-large-shelf-container',
        name:'.content-uploader>a',
        title:'.lohp-video-link'
    });

    for (i = 0; i < titleEls.length; i++) {
        var titleEl = titleEls[i];
        if (titleEl.getAttribute("data-parsed" === "true")) {
            continue;
        }
        titleEl.style.textTransform = 'capitalize';
        titleEl.setAttribute("data-parsed", true);
        titleEl.textContent = transformTitle(titleEl.textContent);
    }
}

(function() {
    'use strict';
    document.addEventListener('spfdone', onPageLoad);
    window.addEventListener('DOMContentLoaded', onPageLoad);
})();