Youtube restore slim thumbnails

Restore slim thumbnails on home and subs pages. Disable autoplay on unsub channel's home.

您需要先安装一个扩展,例如 篡改猴Greasemonkey暴力猴,之后才能安装此脚本。

您需要先安装一个扩展,例如 篡改猴暴力猴,之后才能安装此脚本。

您需要先安装一个扩展,例如 篡改猴暴力猴,之后才能安装此脚本。

您需要先安装一个扩展,例如 篡改猴Userscripts ,之后才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey,才能安装此脚本。

您需要先安装用户脚本管理器扩展后才能安装此脚本。

(我已经安装了用户脚本管理器,让我安装!)

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

(我已经安装了用户样式管理器,让我安装!)

// ==UserScript==
// @name         Youtube restore slim thumbnails
// @namespace    http://tampermonkey.net/
// @version      0.4.6.1
// @description  Restore slim thumbnails on home and subs pages. Disable autoplay on unsub channel's home.
// @author       me
// @match        https://www.youtube.com/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    var firstRun = true;
    var initObs = false;
    var activeObs = false;
    var obs = undefined;
    var resObs = undefined;

    //https://stackoverflow.com/a/52809105----
    history.pushState = ( f => function pushState(){
        var ret = f.apply(this, arguments);
        window.dispatchEvent(new Event('pushstate'));
        window.dispatchEvent(new Event('locationchange'));
        return ret;
    })(history.pushState);

    history.replaceState = ( f => function replaceState(){
        var ret = f.apply(this, arguments);
        window.dispatchEvent(new Event('replacestate'));
        window.dispatchEvent(new Event('locationchange'));
        return ret;
    })(history.replaceState);

    window.addEventListener('popstate',()=>{
        window.dispatchEvent(new Event('locationchange'))
    });

    //https://stackoverflow.com/a/45956628----
    //youtube wtf events
    //new layout > 2017
    window.addEventListener("yt-navigate-finish", function(event) {
        window.dispatchEvent(new Event('locationchange'))
    });

    //old layout < 2017
    window.addEventListener("spfdone", function(e) {
        window.dispatchEvent(new Event('locationchange'))
    });

    //should made portable my settings
    const getRelative = () => {
        var p = document.createElement("p");
        p.innerHTML = "test";
        p.style.fontSize = "16px";
        document.body.appendChild(p);
        var relative = 19/p.offsetHeight;
        p.innerHTML = "";
        return relative;
    }

    const disableAutoplayUnsubChannel = () => {
        if(interval != null){
            clearInterval(interval);
        }
        //(c|channel|user|u) wtf youtube!
        if(document.URL.match(/^(https:\/\/www\.youtube\.com)\/(c|channel|user|u)\/([a-z0-9_]*)(\/featured)?$/i) != null){
            var interval3 = setInterval(() => {
                var videos = document.getElementsByClassName("video-stream html5-main-video");
                if( videos != null){
                    videos[videos.length-1].addEventListener("play", () => {
                        videos[videos.length-1].pause();
                    }, {once: true});
                    videos[videos.length-1].pause();
                    clearInterval(interval3);
                }
            },100);
        }
    }

    const startObserve = () => {
        if(document.URL.match(/^(https:\/\/www\.youtube\.com)(\/|\/[^/]+\/(videos|streams)|\/feed\/subscriptions|\/\?gl\=[a-z]+)?$/i) != null){
            var interval_2 = setInterval(function(){
                if(document.querySelectorAll("ytd-browse[role=\"main\"] ytd-rich-grid-renderer>#contents")[0] !== undefined){
                    clearInterval(interval_2);

                    var grid_renderer_contents = document.querySelectorAll("ytd-browse[role=\"main\"] ytd-rich-grid-renderer>#contents")[0];
                    const fixThubnails = function(){
                        document.querySelectorAll("ytd-browse[role=\"main\"] ytd-rich-grid-renderer>#contents > ytd-rich-grid-row > #contents > ytd-rich-item-renderer:not([is-shorts-grid=\"\"])").forEach(
                            function(element){
                                if(element.querySelectorAll("ytd-thumbnail-overlay-time-status-renderer[overlay-style=\"SHORTS\"]")[0] === undefined){
                                    element.parentNode.parentNode.insertAdjacentElement('beforebegin',element);
                                }
                            }
                        );
                        document.querySelectorAll("ytd-browse[role=\"main\"] ytd-rich-grid-renderer>#contents > ytd-rich-grid-row").forEach(
                            function(element){element.remove()}
                        );
                    }
                    fixThubnails();
                    //if(obs !== undefined) obs.disconnect();
                    obs = new MutationObserver(function (mutationList,observer){
                        observer.disconnect();
                        //if(obs !== undefined) obs.disconnect();
                        if(document.URL.match(/^(https:\/\/www\.youtube\.com)(\/|\/[^/]+\/(videos|streams)|\/feed\/subscriptions|\/\?gl\=[a-z]+)?$/i) != null){

                            fixThubnails();
                            observer.observe(grid_renderer_contents,{childList: true});
                        }
                    });
                    obs.observe(grid_renderer_contents,{childList: true});
                    initObs = true;

                }
            },5);
        } //else if(obs !== undefined) obs.disconnect();
    }

    const restoreSlimTubnails = () => {
        //work only on www.youtube.com and www.youtube.com/feed/subscriptions. If run on video's page it causes cpu load
        if(document.URL.match(/^(https:\/\/www\.youtube\.com)(\/|\/[^/]+\/(videos|streams)|\/feed\/subscriptions|\/\?gl\=[a-z]+)?$/i) == null) return;
        if(!firstRun && !initObs){
            startObserve();
            return;
        }

        if(!firstRun) return;

        var relative = getRelative();
        var itemWidth = 240*relative;
        var postWidth = 350*relative;
        var subsWidth = 214;
        var padding = 48;
        var fontSize = 1.4*relative;
        var lineHeight = 1.8*relative;
        let parentSize = document.createElement("style");
        var parent = document.getElementById("page-manager");
        if(parent == null) return;

        var toResObs = document.querySelector("ytd-browse:not([hidden]) > #header");
        if(toResObs == null) return;


        const updateParentSize = () => {
            parentSize.innerHTML = ":root{--how-many-items:"+parseInt(parent.offsetWidth/itemWidth)+";"+
                "--how-many-posts:"+parseInt(parent.offsetWidth/postWidth)+";"+
                "--variable-columns-width:"+parseInt((parent.offsetWidth-padding)/subsWidth)*subsWidth+"px}";
        }

        updateParentSize();

        let style = document.createElement("style");
        style.innerHTML = "ytd-rich-grid-renderer.ytd-two-column-browse-results-renderer{"+
            "--ytd-rich-grid-items-per-row:var(--how-many-items) !important;"+
            "--ytd-rich-grid-posts-per-row:var(--how-many-posts) !important;"+
            "--ytd-rich-grid-movies-per-row:11 !important;}"+

            "#metadata-line.ytd-video-meta-block,ytd-channel-name{"+
            "max-height: 7.1rem !important;"+
            "font-size:"+fontSize+"rem !important;"+
            "line-height:"+lineHeight+"rem !important}"+

            "ytd-two-column-browse-results-renderer[page-subtype='subscriptions']{"+
            "width:var(--variable-columns-width) !important;"+
            "max-width:var(--variable-columns-width) !important}"+

            "ytd-two-column-browse-results-renderer[page-subtype='home'] > #primary > ytd-rich-grid-renderer > #contents{"+
            "width:auto}"+

            //new fix
            "ytd-rich-section-renderer[align-within-rich-grid] #content.ytd-rich-section-renderer{margin:0 8px !important}"+
            "ytd-rich-grid-renderer>#contents{max-width: calc( var(--ytd-rich-grid-items-per-row) * (var(--ytd-rich-grid-item-max-width) + var(--ytd-rich-grid-item-margin)) - var(--ytd-rich-grid-item-margin) );"+
            "padding: 0 24px;}";
        document.body.appendChild(parentSize);
        document.body.appendChild(style);
        new ResizeObserver(updateParentSize).observe(toResObs);
        firstRun = false;
        startObserve();

        //new fix after some youtube changes
        /*var grid_renderer_contents = document.querySelectorAll("ytd-rich-grid-renderer>#contents")[0];
        const fixThubnails = function(){
            document.querySelectorAll("ytd-rich-grid-renderer>#contents > ytd-rich-grid-row > #contents > ytd-rich-item-renderer").forEach(
                function(element){element.parentNode.parentNode.insertAdjacentElement('beforebegin',element);}
            );
            document.querySelectorAll("ytd-rich-grid-renderer>#contents > ytd-rich-grid-row").forEach(
                function(element){element.remove()}
            );
        }
        fixThubnails();
        new MutationObserver(function (mutationList,observer){
            observer.disconnect();
            fixThubnails();
            observer.observe(grid_renderer_contents,{childList: true});
        }).observe(grid_renderer_contents,{childList: true});*/
    }

    const run = () => {
        firstRun = true;
        initObs = false;
        if(obs !== undefined) obs.disconnect();
        disableAutoplayUnsubChannel();
        restoreSlimTubnails();
    }

    var interval = setInterval(()=>{
        if(document.body !== null){
            clearInterval(interval);
            run();
        }
    },5);

    window.addEventListener('locationchange', run);
})();