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Tabview Youtube

Make comments and lists into tabs

当前为 2021-07-01 提交的版本,查看 最新版本

// ==UserScript==
// @name         Tabview Youtube
// @namespace    http://tampermonkey.net/
// @version      0.5
// @description  Make comments and lists into tabs
// @author       CY Fung
// @match        https://www.youtube.com/watch?v=*
// @resource     contentCSS https://github.com/cyfung1031/Tabview-Youtube/raw/main/css/style_content.css?v20210702a
// @icon         https://github.com/cyfung1031/Tabview-Youtube/raw/main/images/icon128p.png
// @require      https://code.jquery.com/jquery-3.6.0.slim.min.js
// @grant        GM_getResourceText
// @run-at       document-start
// @license      MIT https://github.com/cyfung1031/Tabview-Youtube/blob/main/LICENSE
// ==/UserScript==
function main($){
    // MIT License
    // https://github.com/cyfung1031/Tabview-Youtube/raw/main/js/content.js





/**
 * SVG resources:
 * <div>Icons made by <a href="https://www.flaticon.com/authors/smashicons" title="Smashicons">Smashicons</a> from <a href="https://www.flaticon.com/" title="Flaticon">www.flaticon.com</a></div>
 */
 const svgComments = `
 <path d="M40.068,13.465L5.93,13.535c-3.27,0-5.93,2.66-5.93,5.93v21.141c0,3.27,2.66,5.929,5.93,5.929H12v10
 c0,0.413,0.254,0.784,0.64,0.933c0.117,0.045,0.239,0.067,0.36,0.067c0.276,0,0.547-0.115,0.74-0.327l9.704-10.675l16.626-0.068
 c3.27,0,5.93-2.66,5.93-5.929V19.395C46,16.125,43.34,13.465,40.068,13.465z M10,23.465h13c0.553,0,1,0.448,1,1s-0.447,1-1,1H10
 c-0.553,0-1-0.448-1-1S9.447,23.465,10,23.465z M36,37.465H10c-0.553,0-1-0.448-1-1s0.447-1,1-1h26c0.553,0,1,0.448,1,1
 S36.553,37.465,36,37.465z M36,31.465H10c-0.553,0-1-0.448-1-1s0.447-1,1-1h26c0.553,0,1,0.448,1,1S36.553,31.465,36,31.465z"/>
 <path d="M54.072,2.535L19.93,2.465c-3.27,0-5.93,2.66-5.93,5.93v3.124l26.064-0.054c4.377,0,7.936,3.557,7.936,7.93v21.07v0.071
 v2.087l3.26,3.586c0.193,0.212,0.464,0.327,0.74,0.327c0.121,0,0.243-0.022,0.36-0.067c0.386-0.149,0.64-0.52,0.64-0.933v-10h1.07
 c3.27,0,5.93-2.66,5.93-5.929V8.465C60,5.195,57.34,2.535,54.072,2.535z"/>
 `

const svgVideos = `<path d="M298,33c0-13.255-10.745-24-24-24H24C10.745,9,0,19.745,0,33v232c0,13.255,10.745,24,24,24h250c13.255,0,24-10.745,24-24V33
 z M91,39h43v34H91V39z M61,259H30v-34h31V259z M61,73H30V39h31V73z M134,259H91v-34h43V259z M123,176.708v-55.417
 c0-8.25,5.868-11.302,12.77-6.783l40.237,26.272c6.902,4.519,6.958,11.914,0.056,16.434l-40.321,26.277
 C128.84,188.011,123,184.958,123,176.708z M207,259h-43v-34h43V259z M207,73h-43V39h43V73z M268,259h-31v-34h31V259z M268,73h-31V39
 h31V73z"/>`

const svgInfo = `<path d="M11.812,0C5.289,0,0,5.289,0,11.812s5.289,11.813,11.812,11.813s11.813-5.29,11.813-11.813
 S18.335,0,11.812,0z M14.271,18.307c-0.608,0.24-1.092,0.422-1.455,0.548c-0.362,0.126-0.783,0.189-1.262,0.189
 c-0.736,0-1.309-0.18-1.717-0.539s-0.611-0.814-0.611-1.367c0-0.215,0.015-0.435,0.045-0.659c0.031-0.224,0.08-0.476,0.147-0.759
 l0.761-2.688c0.067-0.258,0.125-0.503,0.171-0.731c0.046-0.23,0.068-0.441,0.068-0.633c0-0.342-0.071-0.582-0.212-0.717
 c-0.143-0.135-0.412-0.201-0.813-0.201c-0.196,0-0.398,0.029-0.605,0.09c-0.205,0.063-0.383,0.12-0.529,0.176l0.201-0.828
 c0.498-0.203,0.975-0.377,1.43-0.521c0.455-0.146,0.885-0.218,1.29-0.218c0.731,0,1.295,0.178,1.692,0.53
 c0.395,0.353,0.594,0.812,0.594,1.376c0,0.117-0.014,0.323-0.041,0.617c-0.027,0.295-0.078,0.564-0.152,0.811l-0.757,2.68
 c-0.062,0.215-0.117,0.461-0.167,0.736c-0.049,0.275-0.073,0.485-0.073,0.626c0,0.356,0.079,0.599,0.239,0.728
 c0.158,0.129,0.435,0.194,0.827,0.194c0.185,0,0.392-0.033,0.626-0.097c0.232-0.064,0.4-0.121,0.506-0.17L14.271,18.307z
  M14.137,7.429c-0.353,0.328-0.778,0.492-1.275,0.492c-0.496,0-0.924-0.164-1.28-0.492c-0.354-0.328-0.533-0.727-0.533-1.193
 c0-0.465,0.18-0.865,0.533-1.196c0.356-0.332,0.784-0.497,1.28-0.497c0.497,0,0.923,0.165,1.275,0.497
 c0.353,0.331,0.53,0.731,0.53,1.196C14.667,6.703,14.49,7.101,14.137,7.429z"/>`

const svgPlayList = `
 <rect x="0" y="64" width="256" height="42.667"/>
 <rect x="0" y="149.333" width="256" height="42.667"/>
 <rect x="0" y="234.667" width="170.667" height="42.667"/>
 <polygon points="341.333,234.667 341.333,149.333 298.667,149.333 298.667,234.667 213.333,234.667 213.333,277.333 
     298.667,277.333 298.667,362.667 341.333,362.667 341.333,277.333 426.667,277.333 426.667,234.667"/>
     `



const svgElm = (w, h, vw, vh, p) => `<svg width="${w}" height="${h}" viewBox="0 0 ${vw} ${vh}" preserveAspectRatio="xMidYMid meet">${p}</svg>`

let settings = {
    toggleSettings: {
        tabs: 1,
        tInfo: 1,
        tComments: 1,
        tVideos: 1,
    },
    defaultTab: "videos"
};

const mtoInterval1=40;
const mtoInterval2=150;

const clickInterval1=100;
const clickInterval2=30;

let mtoInterval = mtoInterval1;
let clickInterval=clickInterval1;

function isVideoPlaying(video) {
    return video.currentTime > 0 && !video.paused && !video.ended && video.readyState > video.HAVE_CURRENT_DATA;
}

function hideTabBtn($tabBtn){
    
    var isActiveBefore = $tabBtn.is('.active')

    $tabBtn.addClass("tab-btn-hidden");
    if (isActiveBefore) {
        setToActiveTab();
    }
}

function isTheater(){
    
    const cssElm=document.querySelector('ytd-watch-flexy');
    return (cssElm && cssElm.hasAttribute('theater'))
}

function isChatExpand(){
    const cssElm=document.querySelector('ytd-watch-flexy');
    return cssElm && cssElm.hasAttribute('userscript-chatblock') && !cssElm.hasAttribute('userscript-chat-collapsed')
}
function isWideScreenWithTwoColumns(){
    const cssElm=document.querySelector('ytd-watch-flexy');
    return (cssElm && cssElm.hasAttribute('is-two-columns_'))
    
}

function isAnyActiveTab(){
    return $('#right-tabs .tab-btn.active').length>0
}

function ytBtnCancelTheater(){
    if(isTheater()){
        const sizeBtn =  document.querySelector('ytd-watch-flexy #ytd-player button.ytp-size-button')
        if(sizeBtn) sizeBtn.click();
    }
}

function ytBtnCollapseChat(){
    
    let button = document.querySelector('ytd-live-chat-frame#chat:not([collapsed])>.ytd-live-chat-frame#show-hide-button')
    if (button) button.querySelector('ytd-toggle-button-renderer').click();
}

function fixDisplayForTheaterModeChanged(){
    const cssElm = document.querySelector('ytd-watch-flexy')
    if(!cssElm) return;
    if(isTheater() && isWideScreenWithTwoColumns()){
        if( isAnyActiveTab()) switchTabActivity(null)
        if( isChatExpand() ) ytBtnCollapseChat()

    }else if( !isTheater() && !isChatExpand() && !isAnyActiveTab()){

        setToActiveTab();

    }else if( !isWideScreenWithTwoColumns() && !isChatExpand() && !isAnyActiveTab() ){
        
        setToActiveTab();

    }
}

function hackImgShadow(imgShadow){
    // add to #columns and add back after loaded

    let img = imgShadow.querySelector('img')
    if(!img)return;

    let p=imgShadow.parentNode
    let z=$(imgShadow).clone()[0]; //to occupy the space
    p.replaceChild(z, imgShadow)
    $(imgShadow).prependTo('#columns'); // refer to css hack

    function onload(){
        img.removeEventListener('load',onload,false)
        if(p&&imgShadow&&z) p.replaceChild(imgShadow, z)
        p=null;
        z=null;
        imgShadow=null;
    }

    if (img.complete) onload();
    else img.addEventListener('load',onload,false)

}


const Q={}

Q.$callOnceAsync=async function(key){
    if (Q[key] && Q[key]() === false) Q[key] = null
}

function chatFrameElement(cssSelector){
    let iframe = document.querySelector('iframe#chatframe');
    if(!iframe) return null;
    let elm = null;
    try{
        elm = iframe.contentDocument.querySelector(cssSelector)
    }catch(e){
        console.log('iframe error', e)
    }
    return elm;
}


function mtf_fixTabsAtTheEnd(){
    // if window resize, youtube coding will relocate the element
    // for example, chatroom move before #right-tabs
    // causing difference apperance after resize of window


    let nonLastRightTabs = document.querySelector('#secondary #right-tabs:not(:last-child)')

    if(nonLastRightTabs){
        nonLastRightTabs.parentNode.appendChild(nonLastRightTabs)
    }

}

function mtf_ChatExist(){

    // no mutation triggering if the changes are inside the iframe 

    // 1) Detection of #continuations inside iframe
    // iframe ownerDocument is accessible due to same origin
    // if the chatroom is collasped, no determination of live chat or replay (as no #continuations and somehow a blank iframe doc)

    // 2) Detection of meta tag
    // This is fastest but not reliable. It is somehow a bug that the navigation might not update the meta tag content
    
    // 3) Detection of HTMLElement inside video player for live video
    
    // (1)+(3) = solution

    
    const elmChat = document.querySelector('ytd-live-chat-frame#chat')
    let elmCont = null;
    if(elmChat){
        elmCont=chatFrameElement('yt-live-chat-renderer #continuations')
    }
    
    const chatBlockR = (elmChat?1:0)+(elmCont?2:0)
    if(Q.mtf_chatBlockQ!==chatBlockR){

        //console.log(897, Q.mtf_chatBlockQ, chatBlockR)
        Q.mtf_chatBlockQ=chatBlockR

        
        const cssElm = document.querySelector('ytd-watch-flexy')
        if(elmChat){

            let s=0;
            if(elmCont){
                //not found if it is collasped.
                s |= elmCont.querySelector('yt-timed-continuation')?1:0;
                s |= elmCont.querySelector('yt-live-chat-replay-continuation, yt-player-seek-continuation')?2:0;
                //s |= elmCont.querySelector('yt-live-chat-restricted-participation-renderer')?4:0;
                if(s==1) cssElm.setAttribute('userscript-chatblock', 'chat-live')
                if(s==2) cssElm.setAttribute('userscript-chatblock', 'chat-playback')
                //if(s==5) cssElm.setAttribute('userscript-chatblock', 'chat-live-paid')

                if(s==1) $("span#tab3-txt-loader").text('');

            }
            //keep unknown as original
            if( !cssElm.hasAttribute) cssElm.setAttribute('userscript-chatblock', '')
           

        }else{
            cssElm.removeAttribute('userscript-chatblock')
            cssElm.removeAttribute('userscript-chat-collapsed')

        }
        

    }
}




let lastScrollAt = 0;

function makeBodyScrollByEvt(){
    // inside marco task (event)

    Promise.resolve().then(()=>window.dispatchEvent(new Event("scroll")))


}

function makeBodyScroll() {

    // avoid over triggering scroll event
    if (+new Date - lastScrollAt < 30) return;
    lastScrollAt = +new Date;

    //required for youtube content display

    requestAnimationFrame(()=>{

        window.dispatchEvent(new Event("scroll"));

    })
    


}
function scrollForComments() {
    let comments = document.querySelector('ytd-comments#comments');
    function f() {
        if (comments.hasAttribute('hidden')) makeBodyScroll();
    }
    setTimeout(f, 80);
    setTimeout(f, 240);
    setTimeout(f, 870);
}



let mtoNav = null;


const mtoVs={}


function initObserver(){




    // continuous check for element relocation
    function mtf_append_comments() {
        let comments = document.querySelector('#primary ytd-watch-metadata ~ #info ~ ytd-comments#comments');
        if (comments) $(comments).appendTo('#tab-comments')
    }

    // continuous check for element relocation
    function mtf_liveChatBtnF() {
        let button = document.querySelector('ytd-live-chat-frame#chat>.ytd-live-chat-frame#show-hide-button:nth-child(n+2)');
        if (button) button.parentNode.insertBefore(button, button.parentNode.firstChild)
    }


    
    // continuous check for element relocation
    // fired at begining & window resize, etc
    function mtf_append_playlist(){
        let ple1 = document.querySelector("*:not(#ytd-userscript-playlist)>ytd-playlist-panel-renderer#playlist");
        if(ple1){
            appendWithWrapper(
                ple1,
                'ytd-userscript-playlist',  
                document.querySelector("#tab-list")
            );
        }
    }


    // content fix - info & playlist
    // fired at begining, and keep for in case any change
    function mtf_fix_details() {

        const content = document.querySelector('#meta-contents ytd-expander>#content, #tab-info ytd-expander>#content')
        if (content) {
            const expander = content.parentNode;

            if (expander.hasAttribute('collapsed')) expander.removeAttribute('collapsed');

            let btn1 = expander.querySelector('tp-yt-paper-button#less:not([hidden])');
            let btn2 = expander.querySelector('tp-yt-paper-button#more:not([hidden])');

            if (btn1) btn1.setAttribute('hidden', '');
            if (btn2) btn2.setAttribute('hidden', '');

        }

        // just in case the playlist is collapsed
        const playlist = document.querySelector('#tab-list ytd-playlist-panel-renderer#playlist')
        if(playlist){
            if(playlist.hasAttribute('collapsed')) playlist.removeAttribute('collapsed');
            if(playlist.hasAttribute('collapsible')) playlist.removeAttribute('collapsible');
        }        


    }



    let mtoNav_requestNo=0;

    let mtoNav_delayedF = () => {
    
        let {addP, removeP} = Q;
    
        Q.addP = 0;
        Q.removeP = 0;

        let promisesForAddition=addP > 0?[
            Q.$callOnceAsync('mtf_advancedComments'),
            Q.$callOnceAsync('mtf_checkDescriptionLoaded'),
            Q.$callOnceAsync('mtf_checkPlayList'),
            Q.$callOnceAsync('mtf_fetchCommentsAvailable'),
            Q.$callOnceAsync('mtf_initalAttr_comments'),
            Q.$callOnceAsync('mtf_initalAttr_playlist'),
            Q.$callOnceAsync('mtf_checkStatus_chatroom'),
            Q.$callOnceAsync('mtf_checkFlexy'),
            Q.$callOnceAsync('mtf_forceCheckLiveVideo'),

            (async () => {
                mtf_append_comments();
            })(),
    
            (async () => {
                mtf_liveChatBtnF();
            })(),

            (async ()=>{
                mtf_fixTabsAtTheEnd();
            })(),
        
            (async () => {
                mtf_append_playlist();
            })()
        ]:[];
        


        let promisesForEveryMutation=[
            (async () => {
                mtf_fix_details();
            })(),
            (async () => {
                mtf_ChatExist();
            })()
        ];


        Promise.all([...promisesForAddition,...promisesForEveryMutation]).then(()=>{
            mtoNav_requestNo--;
            //console.log('motnav reduced to', mtoNav_requestNo)
            if(mtoNav_requestNo>0){
                mtoNav_requestNo=1;
                setTimeout(mtoNav_delayedF,mtoInterval);
            }
        })
    
    
    }

    Q.addP=0;
    Q.removeP=0; 
    let hReqNo=0;
    const mtoNavF=(mutations, observer) => {

        let ch = false;
        for (const mutation of mutations) {
            for (const addedNode of mutation.addedNodes)
                if (addedNode.nodeType === 1) {
                    Q.addP++
                    ch = true;
                }
            for (const removedNode of mutation.removedNodes)
                if (removedNode.nodeType === 1) {
                    Q.removeP++;
                    ch = true;
                }
        }
        if (!ch) return;

        mtoNav_requestNo++;
        hReqNo++;
        if(hReqNo==36) {
             mtoInterval=mtoInterval2;
             clickInterval=clickInterval2;
        }
        //console.log('motnav added to', mtoNav_requestNo)

        if(mtoNav_requestNo==1) setTimeout(mtoNav_delayedF,mtoInterval);

    }
    mtoNav = new MutationObserver(mtoNavF);
    mtoNav.observe(document.querySelector('ytd-watch-flexy'), {
        subtree: true,
        childList: true
    })

    1;1&&(async()=>{
        Q.addP=1; //fake the function
        mtoNav_requestNo++;
        if(mtoNav_requestNo==1) mtoNav_delayedF();

    })();
}

function resetAtNav() {


    if (mtoNav) {
        mtoNav.takeRecords();
        mtoNav.disconnect();
        mtoNav = null;

        Q.mtf_advancedComments=null;
        Q.mtf_checkDescriptionLoaded = null;
        Q.mtf_checkPlayList = null;
        Q.mtf_fetchCommentsAvailable = null;
        Q.mtf_initalAttr_comments = null;
        Q.mtf_initalAttr_playlist = null;
        Q.mtf_checkStatus_chatroom = null;
        Q.mtf_forceCheckLiveVideo=null;
        Q.mtf_chatBlockQ = null;
    }

    mtoInterval = mtoInterval1;
    clickInterval = clickInterval1;

    $("ytd-watch-flexy").removeAttr("userscript-chatblock").removeAttr("userscript-chat-collapsed");
    $('#tab-comments').attr('lazy-loading', '');
    $('span#tab3-txt-loader').text('');

    //removed any cache of #comments header (i.e. count message)
    var prevCommentsHeader = document.querySelector('ytd-comments#comments ytd-comments-header-renderer');
    if (prevCommentsHeader) prevCommentsHeader.parentNode.removeChild(prevCommentsHeader);

    //force to [hidden]
    var prevComemnts = document.querySelector('ytd-comments#comments'); 
    if (prevComemnts) {
        document.querySelector('ytd-comments#comments').setAttribute('hidden', '');
        scrollForComments();
    }


}

function getTabsHTML(){


    let ts = settings.toggleSettings;

    if (!ts.tabs) return;

    const sTabBtnVideos = `${svgElm(16,16,298,298,svgVideos)}<span>Videos</span>`
    const sTabBtnInfo = `${svgElm(16,16,23.625,23.625,svgInfo)}<span>Info</span>`
    const sTabBtnPlayList = `${svgElm(16,16,426.667,426.667,svgPlayList)}<span>Playlist</span>`

    const str1 = `
     <paper-ripple class="style-scope yt-icon-button">
         <div id="background" class="style-scope paper-ripple" style="opacity:0;"></div>
         <div id="waves" class="style-scope paper-ripple"></div>
     </paper-ripple>
     `;

    const str_tabs = [
        ts.tInfo ? `<a id="tab-btn1" data-name="info" userscript-tab-content="#tab-info" class="tab-btn">${sTabBtnInfo}${str1}</a>` : '',
        `<a id="tab-btn2" userscript-tab-content="#tab-live" class="tab-btn tab-btn-hidden">Chat${str1}</a>`,
        ts.tComments ? `<a id="tab-btn3" userscript-tab-content="#tab-comments" data-name="comments" class="tab-btn">${svgElm(16,16,60,60,svgComments)}<span id="tab3-txt-loader"></span>${str1}</a>` : '',
        ts.tVideos ? `<a id="tab-btn4" userscript-tab-content="#tab-videos" data-name="videos" class="active tab-btn">${sTabBtnVideos}${str1}</a>` : '',
        `<a id="tab-btn5" userscript-tab-content="#tab-list" class="tab-btn">${sTabBtnPlayList}${str1}</a>`
    ].join('')

    var addHTML = `
     <div id="right-tabs">
         <header>
             <div id="material-tabs">
                 ${str_tabs}
             </div>
         </header>
         <div class="tab-content">
             <div id="tab-info" class="tab-content-cld" userscript-scrollbar-render></div>
             <div id="tab-live" class="tab-content-cld tab-content-hidden" userscript-scrollbar-render></div>
             <div id="tab-comments" class="tab-content-cld" userscript-scrollbar-render></div>
             <div id="tab-videos" class="tab-content-cld" userscript-scrollbar-render></div>
             <div id="tab-list" class="tab-content-cld" userscript-scrollbar-render></div>
         </div>
     </div>
     `;

     return addHTML

}

function onNavigationEnd() {

    if (window.location.href.indexOf("www.youtube.com/watch?v=") < 0) return;

    resetAtNav();


    let promise = Promise.resolve();

    if (!document.querySelector("#right-tabs")) {
        let targetElm = document.querySelector("ytd-watch-flexy #secondary>#secondary-inner")||document.querySelector("ytd-watch-flexy #secondary")||document.querySelector("ytd-watch-flexy #columns");
        if(!targetElm) throw 'Userscript: Two Column flexy layout not found'; // not flexy layout
        promise=promise.then(()=>{
            $(getTabsHTML()).appendTo(targetElm);
            targetElm=null;
        })
    }

    promise.then(runAfterTabAppended).then(initObserver)

}

function setToActiveTab() {
    if(isTheater() && isWideScreenWithTwoColumns())return;
    const jElm = document.querySelector(`a[userscript-tab-content="${switchTabActivity_lastTab}"]:not(.tab-btn-hidden)`) ||
        document.querySelector(`a[userscript-tab-content="#tab-${settings.defaultTab}"]:not(.tab-btn-hidden)`) ||
        document.querySelector("a[userscript-tab-content]:not(.tab-btn-hidden)") ||
        null;
    switchTabActivity(jElm);
}

function insertBefore(elm, p) {
    if (elm && p && p.parentNode)
        p.parentNode.insertBefore(elm, p);
}

function appendWithWrapper(elm, wrapperId, toParent){
    if(!toParent||!elm)return;
    let $wrapper = $(`#${wrapperId}`);
    if(!$wrapper[0]) $wrapper=$(`<div id="${wrapperId}"></div>`)
    $wrapper.append(elm).appendTo(toParent);
}

function runAfterTabAppended() {

    // just switch to the default tab
    setToActiveTab();

    // append the next videos 
    // it exists as "related" is already here
    let relatedVideos = document.querySelector("#related>ytd-watch-next-secondary-results-renderer");
    if(relatedVideos){
        appendWithWrapper(
            relatedVideos,
            'ytd-userscript-watch-next-videos',  
            document.querySelector("#tab-videos")
        );
    }

    prepareTabBtn();

    
    // append the detailed meta contents to the tab-info
    Q.mtf_checkDescriptionLoaded = () => {
        const expander = document.querySelector("#meta-contents ytd-expander");
        if (!expander) return true;
        $(expander).appendTo("#tab-info")

        const avatar = document.querySelector('ytd-watch-flexy #meta-contents yt-img-shadow#avatar');
        if(avatar) hackImgShadow(avatar)
        return false;
    }
    Q.$callOnceAsync('mtf_checkDescriptionLoaded')

    // force window scroll when #continuations is first detected and #comments still [hidden]
    Q.mtf_advancedComments = () => {
        const continuations = document.querySelector("ytd-comments#comments #continuations");
        if (!continuations) return true;
        scrollForComments();
        return false;
    }
    Q.$callOnceAsync('mtf_advancedComments')




    // make window scroll event from playlist scrolling
    // i guess it shall be not neccessary, just in case
    Q.mtf_checkPlayList = () => {
        const items= document.querySelector('ytd-playlist-panel-renderer>#container>#items');
        if(!items) return true;
        $(items).scroll(makeBodyScrollByEvt);
        return false;
    }
    Q.$callOnceAsync('mtf_checkPlayList')


    // use video player's element to detect the live-chat situation (no commenting section)
    // this would be very useful if the live chat is collapsed, i.e. iframe has no indication on the where it is live or replay
    Q.mtf_forceCheckLiveVideo = () => {
        const playerLabel = document.querySelector('#ytd-player .ytp-time-display') && document.querySelector('ytd-live-chat-frame#chat')
        if (!playerLabel) return true;
        setTimeout(function(){
            const cssElm = document.querySelector('ytd-watch-flexy')
            if(!cssElm) return;
            if($('#ytd-player .ytp-time-display').is('.ytp-live')) cssElm.setAttribute('userscript-chatblock', 'chat-live')
        },170)
        return false;
    }
    Q.$callOnceAsync('mtf_forceCheckLiveVideo')



    createAttributeObservants();
    checkChatStatus();


    $("#right-tabs [userscript-scrollbar-render]").scroll(makeBodyScrollByEvt);

}


async function asyncFetchCommentsAvailable() {

    let span = document.querySelector("span#tab3-txt-loader")
    if (!span) return;

    makeBodyScroll();

    Q.mtf_fetchCommentsAvailable = () => {

        let messageElm, messageStr;
        const commentRenderer = document.querySelector("ytd-comments#comments #count.ytd-comments-header-renderer");
        if (commentRenderer) {
            let r = '0';
            let txt = commentRenderer.textContent
            if (typeof txt == 'string') {
                let m = txt.match(/[\d\,\s]+/)
                if (m) r = m[0].trim()
            }
            span.textContent = r;
            $('#tab-comments[lazy-loading]').removeAttr('lazy-loading')
            mtoInterval=mtoInterval2;
            clickInterval=clickInterval2;
        }else if((messageElm = document.querySelector("ytd-comments#comments #contents>*:only-child"))&&(messageStr=(messageElm.textContent||'').trim())){ //ytd-message-renderer
            const mainMsg= messageElm.querySelector('#message, #submessage')
            if(mainMsg && mainMsg.textContent){
                for(const msg of mainMsg.querySelectorAll('*:not(:empty)')){
                    if(msg.childElementCount===0 && msg.textContent) {
                        messageStr=msg.textContent.trim()
                        break
                    }
                } 
            }
            span.textContent = messageStr;
            $('#tab-comments[lazy-loading]').removeAttr('lazy-loading')
        }
        return true;
    
    }
    Q.$callOnceAsync('mtf_fetchCommentsAvailable')


}




function createAttributeObservants() {


    // Attr Mutation Observer - #playlist - hidden
    if(mtoVs.mtoVisibility_Playlist) {
        mtoVs.mtoVisibility_Playlist.takeRecords();
        mtoVs.mtoVisibility_Playlist.disconnect();
        mtoVs.mtoVisibility_Playlist=null;
    }
    // Attr Mutation Observer callback - #playlist - hidden
    let mtf_attrPlaylist=(mutations, observer)=>{
        var playlist=document.querySelector('ytd-playlist-panel-renderer#playlist')
        const $tabBtn = $('[userscript-tab-content="#tab-list"]');
        //console.log('attr playlist changed')
        if( $tabBtn.is('.tab-btn-hidden') && !playlist.hasAttribute('hidden') ){
            //console.log('attr playlist changed - no hide')
            $tabBtn.removeClass("tab-btn-hidden");
        }else if( !$tabBtn.is('.tab-btn-hidden') && playlist.hasAttribute('hidden') ){
            //console.log('attr playlist changed - add hide')
            hideTabBtn($tabBtn);
        }
    }

    // pending for #playlist and set Attribute Observer
    Q.mtf_initalAttr_playlist=()=>{
        var playlist=document.querySelector('ytd-playlist-panel-renderer#playlist')
        if(!playlist) return true;
        mtoVs.mtoVisibility_Playlist=new MutationObserver(mtf_attrPlaylist)
        mtoVs.mtoVisibility_Playlist.observe(playlist, {          
            attributes: true,
            attributeFilter: ['hidden'],
            attributeOldValue: true
        })
        mtf_attrPlaylist()
        return false;
    }
    Q.$callOnceAsync('mtf_initalAttr_playlist')





    // Attr Mutation Observer - ytd-comments#comments - hidden
    if(mtoVs.mtoVisibility_Comments) {
        mtoVs.mtoVisibility_Comments.takeRecords();
        mtoVs.mtoVisibility_Comments.disconnect();
        mtoVs.mtoVisibility_Comments=null;
    }
    // Attr Mutation Observer callback - ytd-comments#comments - hidden
    let mtf_attrComments=(mutations, observer)=>{
        var comments=document.querySelector('ytd-comments#comments')
        const $tabBtn = $('[userscript-tab-content="#tab-comments"]');
        if(!comments || !$tabBtn[0])return;
        //console.log('attr comments changed')
        if( $tabBtn.is('.tab-btn-hidden') && !comments.hasAttribute('hidden') ){
            //console.log('attr comments changed - no hide')
            $tabBtn.removeClass("tab-btn-hidden");
            asyncFetchCommentsAvailable();
        }else if( !$tabBtn.is('.tab-btn-hidden') && comments.hasAttribute('hidden') ){
            //console.log('attr comments changed - add hide')
            if(!document.querySelector('[userscript-chatblock="chat-live"]')) $('#tab-comments').attr('lazy-loading','')
            $('span#tab3-txt-loader').text('');
            hideTabBtn($tabBtn);
        }        
    }

    // pending for #comments and set Attribute Observer
    Q.mtf_initalAttr_comments=()=>{
        var comments=document.querySelector('ytd-comments#comments')
        if(!comments) return true;
        mtoVs.mtoVisibility_Comments=new MutationObserver(mtf_attrComments)
        mtoVs.mtoVisibility_Comments.observe(comments, {          
            attributes: true,
            attributeFilter: ['hidden'],
            attributeOldValue: true
        })
        mtf_attrComments()
        scrollForComments()
        return false;
    }
    Q.$callOnceAsync('mtf_initalAttr_comments')

}


function checkChatStatus(){
    
    if(mtoVs.mtoVisibility_Chatroom) {
        mtoVs.mtoVisibility_Chatroom.takeRecords();
        mtoVs.mtoVisibility_Chatroom.disconnect();
        mtoVs.mtoVisibility_Chatroom=null;
    }

    let cid_chatFrameCheck=0;

    let mtf_attrChatroom=(mutations, observer)=>{

        const chatBlock = document.querySelector('ytd-live-chat-frame#chat')
        const cssElm = document.querySelector('ytd-watch-flexy')
        
        if(!cssElm.hasAttribute('userscript-chatblock')) cssElm.setAttribute('userscript-chatblock', '');
        if (chatBlock.hasAttribute('collapsed')) {
            cssElm.setAttribute('userscript-chat-collapsed', '');
        } else {
            cssElm.removeAttribute('userscript-chat-collapsed');
        }


        if(!cid_chatFrameCheck){
            let dd=+new Date;
            cid_chatFrameCheck=setInterval(()=>{
                // mutation on iframe window would not trigger the observer
                // just check the first few seconds for this purpose.
                if(+new Date - dd>6750) {
                    return (cid_chatFrameCheck=clearInterval(cid_chatFrameCheck));
                }
                var chatFrameChecking=!!chatFrameElement('yt-live-chat-renderer #continuations')
                if(chatFrameChecking) {
                    mtf_ChatExist();
                    return (cid_chatFrameCheck=clearInterval(cid_chatFrameCheck));
                }
            },270)
        }

    }

    Q.mtf_checkStatus_chatroom=()=>{
        var chatroom=document.querySelector('ytd-live-chat-frame#chat')
        if(!chatroom) return true;
        mtoVs.mtoVisibility_Chatroom=new MutationObserver(mtf_attrChatroom)
        mtoVs.mtoVisibility_Chatroom.observe(chatroom, {          
            attributes: true,
            attributeFilter: ['collapsed'],
            attributeOldValue: true
        })
        mtf_attrChatroom()
        return false;
    }
    Q.$callOnceAsync('mtf_checkStatus_chatroom')





    if(mtoVs.mtoFlexyAttr) {
        mtoVs.mtoFlexyAttr.takeRecords();
        mtoVs.mtoFlexyAttr.disconnect();
        mtoVs.mtoFlexyAttr=null;
    }


    let mtf_attrFlexy=(mutations, observer)=>{
          


        const cssElm=document.querySelector('ytd-watch-flexy');
        if(!cssElm)return;

        let chatBlockStatusChanged = false
        let theaterStatusChanged = false;
        let twoColStatusChanged = false;
        let initalTriggering = !mutations

        if(!initalTriggering){
        
            for(const mutation of mutations) {
                if (mutation.attributeName == 'theater') {
                    theaterStatusChanged=true;
                }
                if (mutation.attributeName == 'userscript-chat-collapsed' || 'userscript-chatblock'){
                    chatBlockStatusChanged=true
                }
                if (mutation.attributeName == 'is-two-columns_'){
                
                    twoColStatusChanged=true;
                }
            }
        }
    

        if(theaterStatusChanged || initalTriggering){

            requestAnimationFrame(fixDisplayForTheaterModeChanged)
        }


        if((chatBlockStatusChanged && !theaterStatusChanged) || initalTriggering){
            //chatroom is shown or hidden

            let isOpenChatFrame =  !cssElm.hasAttribute('userscript-chat-collapsed') && cssElm.hasAttribute('userscript-chatblock') 
            
            window.requestAnimationFrame(()=>{
                if (isOpenChatFrame && !isTheater()) {
                    switchTabActivity(null)
                } else if(!isOpenChatFrame && !isTheater()){
                    setToActiveTab();
                } else if(isTheater() && isWideScreenWithTwoColumns() && isOpenChatFrame && isWideScreenWithTwoColumns()){
                    ytBtnCancelTheater();
                }
            })
        }

        if((twoColStatusChanged && !theaterStatusChanged) || initalTriggering){


            fixDisplayForTheaterModeChanged();

            

        }






    }


    Q.mtf_checkFlexy=()=>{
        var flexy=document.querySelector('ytd-watch-flexy')
        if(!flexy) return true;
        mtoVs.mtoFlexyAttr=new MutationObserver(mtf_attrFlexy)
        mtoVs.mtoFlexyAttr.observe(flexy, {          
            attributes: true,
            attributeFilter: ['userscript-chat-collapsed','userscript-chatblock','theater','is-two-columns_'],
            attributeOldValue: true
        })
        mtf_attrFlexy()
        return false;
    }
    Q.$callOnceAsync('mtf_checkFlexy')



}




let switchTabActivity_lastTab = null

function switchTabActivity(activeLink) {


    if (activeLink && $(activeLink).is('.tab-btn-hidden')) return; // not allow to switch to hide tab

    if(isTheater() && isWideScreenWithTwoColumns()) activeLink=null;

    const links = document.querySelectorAll('#material-tabs a[userscript-tab-content]');

    for (const link of links) {
        let content = document.querySelector(link.getAttribute('userscript-tab-content'));
        if (link && content) {
            if (link !== activeLink) {
                $(link).removeClass("active");
                $(content).addClass("tab-content-hidden");
            } else {
                $(link).addClass("active");
                $(content).removeClass("tab-content-hidden");
                window.requestAnimationFrame(() => content.focus())
            }
        }
    }


}

let tabsUiScript_setclick = false;

function prepareTabBtn() {

    const materialTab = document.querySelector("#material-tabs")
    if (!materialTab) return;

    let noActiveTab = !!document.querySelector('ytd-watch-flexy[userscript-chatblock]:not([userscript-chat-collapsed])')

    const activeLink = materialTab.querySelector('a[userscript-tab-content].active:not(.tab-btn-hidden)')
    if (activeLink) switchTabActivity(noActiveTab ? null : activeLink)

    if (!tabsUiScript_setclick) {
        tabsUiScript_setclick = true;
        $(materialTab).on("click", "a", function(evt) {

            if (!this.hasAttribute('userscript-tab-content')) return;

            switchTabActivity_lastTab = this.getAttribute('userscript-tab-content');

            if( isWideScreenWithTwoColumns() && !isTheater() && $(this).is(".tab-btn.active:not(.tab-btn-hidden)")){

                const sizeBtn=document.querySelector('ytd-watch-flexy #ytd-player button.ytp-size-button')
                
                if(sizeBtn) sizeBtn.click();

            }else if($(this).is(".tab-btn.active:not(.tab-btn-hidden)")){
            

                switchTabActivity(null);

            }else{

                window.requestAnimationFrame(() => {

                    Promise.resolve().then(() => {
                        if(isChatExpand()) ytBtnCollapseChat();
                        else if(isWideScreenWithTwoColumns() && isTheater() ) ytBtnCancelTheater();
                    }).then(() => {
                        setTimeout(() => {
                            switchTabActivity(this)
                            setTimeout(() => {
                                makeBodyScroll();
                            },20);
                        }, clickInterval);
                    })

                })
            }

            

            evt.preventDefault();
        });

    }

}


// ---------------------------------------------------------------------------------------------

window.addEventListener("yt-navigate-finish", onNavigationEnd)

var lastC=0, lastD=0, lastF=0;

function singleColumnScrolling(){
    let pageY=pageYOffset;
    if(pageY<10 && lastD===0 && !lastF)return;


    
    let targetElm = document.querySelector("#right-tabs");
    if(!targetElm) return;
    let header = targetElm.querySelector("header");
    if(!header) return;
    let navElm = document.querySelector('#masthead-container, #masthead')
    if(!navElm) return;
    let navHeight = navElm?navElm.offsetHeight:0

    let elmY=targetElm.offsetTop

    let xyz=[elmY+navHeight, pageY, elmY-navHeight]

let xyStatus = 0
if(xyz[1]<xyz[2] && xyz[2]<xyz[0]){
    // 1
    xyStatus=1
    }

if(xyz[0]>xyz[1]&& xyz[1]>xyz[2]){

    //2
    xyStatus=2

}

if(xyz[2]<xyz[0] && xyz[0]<xyz[1]){
    // 3

    xyStatus=3

    
    }

    if((xyStatus==2||xyStatus==3)&& (lastD===0 || lastF)){
        lastD=1;
        let {offsetHeight}= header
        let {offsetWidth}=targetElm

        targetElm.style.setProperty("--userscript-sticky-width", offsetWidth+'px')
        targetElm.style.setProperty("--userscript-sticky", offsetHeight+'px')
        targetElm.setAttribute("userscript-sticky","")
        
    }else if( (xyStatus==1)&&(lastD===1 || lastF)){
        lastD=0;

            targetElm.removeAttribute("userscript-sticky")
    }

}

window.addEventListener("scroll",function(){
    singleColumnScrolling()
},{capture:false, passive:true})

var lastTheatreStatus=0
window.addEventListener('resize',function(){




    requestAnimationFrame(()=>{   
        lastF=1;
        singleColumnScrolling()
        lastF=0;
    })



    //setTimeout(singleColumnScrolling,40)
    //setTimeout(singleColumnScrolling,80)
    //setTimeout(singleColumnScrolling,120)
    //setTimeout(singleColumnScrolling,270)


},{capture:false, passive:true})










    // https://github.com/cyfung1031/Tabview-Youtube/raw/main/js/content.js

}


;!(function $$() {
    'use strict';

    if(document.documentElement==null) return window.requestAnimationFrame($$)

var cssTxt = GM_getResourceText("contentCSS");

function addStyle (styleText) {
  const styleNode = document.createElement('style');
  styleNode.type = 'text/css';
  styleNode.textContent = styleText;
  document.documentElement.appendChild(styleNode);
  return styleNode;
}


addStyle (cssTxt);

    main(window.$);


    // Your code here...
})();