twitch-videoad.js text/javascript
(function() {
    if ( /(^|\.)twitch\.tv$/.test(document.location.hostname) === false ) { return; }
    'use strict';
    var ourTwitchAdSolutionsVersion = 15;// Used to prevent conflicts with outdated versions of the scripts
    if (typeof window.twitchAdSolutionsVersion !== 'undefined' && window.twitchAdSolutionsVersion >= ourTwitchAdSolutionsVersion) {
        console.log("skipping vaft as there's another script active. ourVersion:" + ourTwitchAdSolutionsVersion + " activeVersion:" + window.twitchAdSolutionsVersion);
        window.twitchAdSolutionsVersion = ourTwitchAdSolutionsVersion;
        return;
    }
    window.twitchAdSolutionsVersion = ourTwitchAdSolutionsVersion;
    function declareOptions(scope) {
        scope.AdSignifier = 'stitched';
        scope.ClientID = 'kimne78kx3ncx6brgo4mv6wki5h1ko';
        scope.BackupPlayerTypes = [
            'embed',//Source
            'site',//Source
            'autoplay'//360p
        ];
        scope.FallbackPlayerType = 'embed';
        scope.ForceAccessTokenPlayerType = 'site';
        scope.SkipPlayerReloadOnHevc = false;// If true this will skip player reload on streams which have 2k/4k quality (if you enable this and you use the 2k/4k quality setting you'll get error #4000 / #3000 / spinning wheel on chrome based browsers)
        scope.AlwaysReloadPlayerOnAd = false;
        scope.PlayerReloadLowResTime = 1500;
        scope.StreamInfos = [];
        scope.StreamInfosByUrl = [];
        scope.GQLDeviceID = null;
        scope.ClientVersion = null;
        scope.ClientSession = null;
        scope.ClientIntegrityHeader = null;
        scope.AuthorizationHeader = undefined;
        scope.SimulatedAdsDepth = 0;
        scope.IsPlayerBuffering = false;
        scope.LastPausePlay = 0;
        scope.FixPlayerBufferingInsideAds = true;
        scope.FixPlayerBufferingOutsideAds = false;
        scope.DelayBetweenEachPlayerFixBufferAttempt = 3000;
        scope.ActiveStreamInfo = null;
        scope.V2API = false;
    }
    var localStorageHookFailed = false;
    var twitchWorkers = [];
    var adBlockDiv = null;
    var workerStringConflicts = [
        'twitch',
        'isVariantA'// TwitchNoSub
    ];
    var workerStringAllow = [];
    var workerStringReinsert = [
        'isVariantA',// TwitchNoSub (prior to (0.9))
        'besuper/',// TwitchNoSub (0.9)
        '${patch_url}'// TwitchNoSub (0.9.1)
    ];
    function getCleanWorker(worker) {
        var root = null;
        var parent = null;
        var proto = worker;
        while (proto) {
            var workerString = proto.toString();
            if (workerStringConflicts.some((x) => workerString.includes(x)) && !workerStringAllow.some((x) => workerString.includes(x))) {
                if (parent !== null) {
                    Object.setPrototypeOf(parent, Object.getPrototypeOf(proto));
                }
            } else {
                if (root === null) {
                    root = proto;
                }
                parent = proto;
            }
            proto = Object.getPrototypeOf(proto);
        }
        return root;
    }
    function getWorkersForReinsert(worker) {
        var result = [];
        var proto = worker;
        while (proto) {
            var workerString = proto.toString();
            if (workerStringReinsert.some((x) => workerString.includes(x))) {
                result.push(proto);
            } else {
            }
            proto = Object.getPrototypeOf(proto);
        }
        return result;
    }
    function reinsertWorkers(worker, reinsert) {
        var parent = worker;
        for (var i = 0; i < reinsert.length; i++) {
            Object.setPrototypeOf(reinsert[i], parent);
            parent = reinsert[i];
        }
        return parent;
    }
    function isValidWorker(worker) {
        var workerString = worker.toString();
        return !workerStringConflicts.some((x) => workerString.includes(x))
            || workerStringAllow.some((x) => workerString.includes(x))
            || workerStringReinsert.some((x) => workerString.includes(x));
    }
    function hookWindowWorker() {
        var reinsert = getWorkersForReinsert(window.Worker);
        var newWorker = class Worker extends getCleanWorker(window.Worker) {
            constructor(twitchBlobUrl, options) {
                var isTwitchWorker = false;
                try {
                    isTwitchWorker = new URL(twitchBlobUrl).origin.endsWith('.twitch.tv');
                } catch {}
                if (!isTwitchWorker) {
                    super(twitchBlobUrl, options);
                    return;
                }
                var newBlobStr = `
                    const pendingFetchRequests = new Map();
                    ${getStreamUrlForResolution.toString()}
                    ${processM3U8.toString()}
                    ${hookWorkerFetch.toString()}
                    ${declareOptions.toString()}
                    ${getAccessToken.toString()}
                    ${gqlRequest.toString()}
                    ${parseAttributes.toString()}
                    ${getWasmWorkerJs.toString()}
                    ${getServerTimeFromM3u8.toString()}
                    ${replaceServerTimeInM3u8.toString()}
                    ${tryFixPlayerBuffering.toString()}
                    var workerString = getWasmWorkerJs('${twitchBlobUrl.replaceAll("'", "%27")}');
                    declareOptions(self);
                    GQLDeviceID = ${GQLDeviceID ? "'" + GQLDeviceID + "'" : null};
                    AuthorizationHeader = ${AuthorizationHeader ? "'" + AuthorizationHeader + "'" : undefined};
                    ClientIntegrityHeader = ${ClientIntegrityHeader ? "'" + ClientIntegrityHeader + "'" : null};
                    ClientVersion = ${ClientVersion ? "'" + ClientVersion + "'" : null};
                    ClientSession = ${ClientSession ? "'" + ClientSession + "'" : null};
                    self.addEventListener('message', function(e) {
                        if (e.data.key == 'UpdateClientVersion') {
                            ClientVersion = e.data.value;
                        } else if (e.data.key == 'UpdateClientSession') {
                            ClientSession = e.data.value;
                        } else if (e.data.key == 'UpdateClientId') {
                            ClientID = e.data.value;
                        } else if (e.data.key == 'UpdateDeviceId') {
                            GQLDeviceID = e.data.value;
                        } else if (e.data.key == 'UpdateClientIntegrityHeader') {
                            ClientIntegrityHeader = e.data.value;
                        } else if (e.data.key == 'UpdateAuthorizationHeader') {
                            AuthorizationHeader = e.data.value;
                        } else if (e.data.key == 'FetchResponse') {
                            const responseData = e.data.value;
                            if (pendingFetchRequests.has(responseData.id)) {
                                const { resolve, reject } = pendingFetchRequests.get(responseData.id);
                                pendingFetchRequests.delete(responseData.id);
                                if (responseData.error) {
                                    reject(new Error(responseData.error));
                                } else {
                                    // Create a Response object from the response data
                                    const response = new Response(responseData.body, {
                                        status: responseData.status,
                                        statusText: responseData.statusText,
                                        headers: responseData.headers
                                    });
                                    resolve(response);
                                }
                            }
                        } else if (e.data.key == 'SimulateAds') {
                            SimulatedAdsDepth = e.data.value;
                            console.log('SimulatedAdsDepth:' + SimulatedAdsDepth);
                        }
                        if (e.data.funcName) {
                            if (e.data.funcName == 'onClientSinkBuffering') {
                                IsPlayerBuffering = true;
                            } else if (e.data.funcName == 'onClientSinkPlaying') {
                                IsPlayerBuffering = false;
                                LastPausePlay = Date.now();
                            } else if (e.data.funcName == 'playIntent' || e.data.funcName == 'play') {
                                LastPausePlay = Date.now();
                            }
                            tryFixPlayerBuffering();
                        }
                    });
                    hookWorkerFetch();
                    eval(workerString);
                `;
                super(URL.createObjectURL(new Blob([newBlobStr])), options);
                twitchWorkers.push(this);
                this.addEventListener('message', (e) => {
                    if (e.data.key == 'ShowAdBlockBanner') {
                        if (adBlockDiv == null) {
                            adBlockDiv = getAdBlockDiv();
                        }
                        if (adBlockDiv != null) {
                            adBlockDiv.P.textContent = 'Blocking' + (e.data.isMidroll ? ' midroll' : '') + ' ads';
                            adBlockDiv.style.display = 'block';
                        }
                    } else if (e.data.key == 'HideAdBlockBanner') {
                        if (adBlockDiv == null) {
                            adBlockDiv = getAdBlockDiv();
                        }
                        if (adBlockDiv != null) {
                            adBlockDiv.style.display = 'none';
                        }
                    } else if (e.data.key == 'PauseResumePlayer') {
                        doTwitchPlayerTask(true, false);
                    } else if (e.data.key == 'ReloadPlayer') {
                        doTwitchPlayerTask(false, true);
                    }
                });
                this.addEventListener('message', async event => {
                    if (event.data.key == 'FetchRequest') {
                        const fetchRequest = event.data.value;
                        const responseData = await handleWorkerFetchRequest(fetchRequest);
                        this.postMessage({
                            key: 'FetchResponse',
                            value: responseData
                        });
                    }
                });
                function getAdBlockDiv() {
                    //To display a notification to the user, that an ad is being blocked.
                    var playerRootDiv = document.querySelector('.video-player');
                    var adBlockDiv = null;
                    if (playerRootDiv != null) {
                        adBlockDiv = playerRootDiv.querySelector('.adblock-overlay');
                        if (adBlockDiv == null) {
                            adBlockDiv = document.createElement('div');
                            adBlockDiv.className = 'adblock-overlay';
                            adBlockDiv.innerHTML = '<div class="player-adblock-notice" style="color: white; background-color: rgba(0, 0, 0, 0.8); position: absolute; top: 0px; left: 0px; padding: 5px;"><p></p></div>';
                            adBlockDiv.style.display = 'none';
                            adBlockDiv.P = adBlockDiv.querySelector('p');
                            playerRootDiv.appendChild(adBlockDiv);
                        }
                    }
                    return adBlockDiv;
                }
            }
        };
        var workerInstance = reinsertWorkers(newWorker, reinsert);
        Object.defineProperty(window, 'Worker', {
            get: function() {
                return workerInstance;
            },
            set: function(value) {
                if (isValidWorker(value)) {
                    workerInstance = value;
                } else {
                    console.log('Attempt to set twitch worker denied');
                }
            }
        });
    }
    function getWasmWorkerJs(twitchBlobUrl) {
        var req = new XMLHttpRequest();
        req.open('GET', twitchBlobUrl, false);
        req.overrideMimeType("text/javascript");
        req.send();
        return req.responseText;
    }
    function hookWorkerFetch() {
        console.log('hookWorkerFetch (vaft)');
        var realFetch = fetch;
        fetch = async function(url, options) {
            if (typeof url === 'string') {
                url = url.trimEnd();
                if (url.endsWith('m3u8')) {
                    return new Promise(function(resolve, reject) {
                        var processAfter = async function(response) {
                            if (response.status === 200) {
                                resolve(new Response(await processM3U8(url, await response.text(), realFetch)));
                            } else {
                                resolve(response);
                            }
                        };
                        var send = function() {
                            return realFetch(url, options).then(function(response) {
                                processAfter(response);
                            })['catch'](function(err) {
                                reject(err);
                            });
                        };
                        send();
                    });
                } else if (url.includes('/channel/hls/') && !url.includes('picture-by-picture')) {
                    V2API = url.includes('/api/v2/');
                    var channelName = (new URL(url)).pathname.match(/([^\/]+)(?=\.\w+$)/)[0];
                    if (ForceAccessTokenPlayerType) {
                        // parent_domains is used to determine if the player is embeded and stripping it gets rid of fake ads
                        var tempUrl = new URL(url);
                        tempUrl.searchParams.delete('parent_domains');
                        url = tempUrl.toString();
                    }
                    return new Promise(function(resolve, reject) {
                        var processAfter = async function(response) {
                            if (response.status == 200) {
                                var encodingsM3u8 = await response.text();
                                var serverTime = getServerTimeFromM3u8(encodingsM3u8);
                                var streamInfo = StreamInfos[channelName];
                                if (streamInfo != null && streamInfo.EncodingsM3U8 != null && (await realFetch(streamInfo.EncodingsM3U8.match(/^https:.*\.m3u8$/m)[0])).status !== 200) {
                                    // The cached encodings are dead (the stream probably restarted)
                                    streamInfo = null;
                                }
                                if (streamInfo == null || streamInfo.EncodingsM3U8 == null) {
                                    StreamInfos[channelName] = streamInfo = {
                                        ChannelName: channelName,
                                        IsShowingAd: false,
                                        AdStartTime: 0,
                                        EncodingsM3U8: encodingsM3u8,
                                        ModifiedM3U8: null,
                                        IsUsingModifiedM3U8: false,
                                        UsherParams: (new URL(url)).search,
                                        RequestedAds: new Set(),
                                        Urls: [],// xxx.m3u8 -> { Resolution: "284x160", FrameRate: 30.0 }
                                        ResolutionList: [],
                                        BackupEncodingsM3U8Cache: [],
                                        ActiveBackupPlayerType: null,
                                        IsMidroll: false
                                    };
                                    var lines = encodingsM3u8.replace('\r', '').split('\n');
                                    for (var i = 0; i < lines.length - 1; i++) {
                                        if (lines[i].startsWith('#EXT-X-STREAM-INF') && lines[i + 1].includes('.m3u8')) {
                                            var attributes = parseAttributes(lines[i]);
                                            var resolution = attributes['RESOLUTION'];
                                            if (resolution) {
                                                var resolutionInfo = {
                                                    Resolution: resolution,
                                                    FrameRate: attributes['FRAME-RATE'],
                                                    Codecs: attributes['CODECS'],
                                                    Url: lines[i + 1]
                                                };
                                                streamInfo.Urls[lines[i + 1]] = resolutionInfo;
                                                streamInfo.ResolutionList.push(resolutionInfo);
                                            }
                                            StreamInfosByUrl[lines[i + 1]] = streamInfo;
                                        }
                                    }
                                    var nonHevcResolutionList = streamInfo.ResolutionList.filter((element) => element.Codecs.startsWith('avc') || element.Codecs.startsWith('av0'));
                                    if (AlwaysReloadPlayerOnAd || (nonHevcResolutionList.length > 0 && streamInfo.ResolutionList.some((element) => element.Codecs.startsWith('hev') || element.Codecs.startsWith('hvc')) && !SkipPlayerReloadOnHevc)) {
                                        if (nonHevcResolutionList.length > 0) {
                                            for (var i = 0; i < lines.length - 1; i++) {
                                                if (lines[i].startsWith('#EXT-X-STREAM-INF')) {
                                                    var resSettings = parseAttributes(lines[i].substring(lines[i].indexOf(':') + 1));
                                                    const codecsKey = 'CODECS';
                                                    if (resSettings[codecsKey].startsWith('hev') || resSettings[codecsKey].startsWith('hvc')) {
                                                        var oldResolution = resSettings['RESOLUTION'];
                                                        const [targetWidth, targetHeight] = oldResolution.split('x').map(Number);
                                                        var newResolutionInfo = nonHevcResolutionList.sort((a, b) => {
                                                            // TODO: Take into account 'Frame-Rate' when sorting (i.e. 1080p60 vs 1080p30)
                                                            const [streamWidthA, streamHeightA] = a.Resolution.split('x').map(Number);
                                                            const [streamWidthB, streamHeightB] = b.Resolution.split('x').map(Number);
                                                            return Math.abs((streamWidthA * streamHeightA) - (targetWidth * targetHeight)) - Math.abs((streamWidthB * streamHeightB) - (targetWidth * targetHeight));
                                                        })[0];
                                                        console.log('ModifiedM3U8 swap ' + resSettings[codecsKey] + ' to ' + newResolutionInfo.Codecs + ' oldRes:' + oldResolution + ' newRes:' + newResolutionInfo.Resolution);
                                                        lines[i] = lines[i].replace(/CODECS="[^"]+"/, `CODECS="${newResolutionInfo.Codecs}"`);
                                                        lines[i + 1] = newResolutionInfo.Url + ' '.repeat(i + 1);// The stream doesn't load unless each url line is unique
                                                    }
                                                }
                                            }
                                        }
                                        if (nonHevcResolutionList.length > 0 || AlwaysReloadPlayerOnAd) {
                                            streamInfo.ModifiedM3U8 = lines.join('\n');
                                            var streamM3u8Url = streamInfo.EncodingsM3U8.match(/^https:.*\.m3u8$/m)[0];
                                            var streamM3u8Response = await realFetch(streamM3u8Url);
                                            if (streamM3u8Response.status == 200) {
                                                var streamM3u8 = await streamM3u8Response.text();
                                                if (streamM3u8.includes(AdSignifier) || SimulatedAdsDepth > 0) {
                                                    streamInfo.IsUsingModifiedM3U8 = true;
                                                }
                                            }
                                        }
                                    }
                                } else {
                                    streamInfo.IsUsingModifiedM3U8 = streamInfo.IsShowingAd && streamInfo.ModifiedM3U8;
                                }
                                resolve(new Response(replaceServerTimeInM3u8(streamInfo.IsUsingModifiedM3U8 ? streamInfo.ModifiedM3U8 : streamInfo.EncodingsM3U8, serverTime)));
                            } else {
                                resolve(response);
                            }
                        };
                        var send = function() {
                            return realFetch(url, options).then(function(response) {
                                processAfter(response);
                            })['catch'](function(err) {
                                reject(err);
                            });
                        };
                        send();
                    });
                }
            }
            return realFetch.apply(this, arguments);
        };
    }
    function getServerTimeFromM3u8(encodingsM3u8) {
        if (V2API) {
            var matches = encodingsM3u8.match(/#EXT-X-SESSION-DATA:DATA-ID="SERVER-TIME",VALUE="([^"]+)"/);
            return matches.length > 1 ? matches[1] : null;
        }
        var matches = encodingsM3u8.match('SERVER-TIME="([0-9.]+)"');
        return matches.length > 1 ? matches[1] : null;
    }
    function replaceServerTimeInM3u8(encodingsM3u8, newServerTime) {
        if (V2API) {
            return newServerTime ? encodingsM3u8.replace(/(#EXT-X-SESSION-DATA:DATA-ID="SERVER-TIME",VALUE=")[^"]+(")/, `$1${newServerTime}$2`) : encodingsM3u8;
        }
        return newServerTime ? encodingsM3u8.replace(new RegExp('(SERVER-TIME=")[0-9.]+"'), `SERVER-TIME="${newServerTime}"`) : encodingsM3u8;
    }
    function getStreamUrlForResolution(encodingsM3u8, resolutionInfo) {
        var encodingsLines = encodingsM3u8.replace('\r', '').split('\n');
        const [targetWidth, targetHeight] = resolutionInfo.Resolution.split('x').map(Number);
        var matchedResolutionUrl = null;
        var matchedFrameRate = false;
        var closestResolutionUrl = null;
        var closestResolutionDifference = Infinity;
        for (var i = 0; i < encodingsLines.length - 1; i++) {
            if (encodingsLines[i].startsWith('#EXT-X-STREAM-INF') && encodingsLines[i + 1].includes('.m3u8')) {
                var attributes = parseAttributes(encodingsLines[i]);
                var resolution = attributes['RESOLUTION'];
                var frameRate = attributes['FRAME-RATE'];
                if (resolution) {
                    if (resolution == resolutionInfo.Resolution && (!matchedResolutionUrl || (!matchedFrameRate && frameRate == resolutionInfo.FrameRate))) {
                        matchedResolutionUrl = encodingsLines[i + 1];
                        matchedFrameRate = frameRate == resolutionInfo.FrameRate;
                        if (matchedFrameRate) {
                            return matchedResolutionUrl;
                        }
                    }
                    const [width, height] = resolution.split('x').map(Number);
                    var difference = Math.abs((width * height) - (targetWidth * targetHeight));
                    if (difference < closestResolutionDifference) {
                        closestResolutionUrl = encodingsLines[i + 1];
                        closestResolutionDifference = difference;
                    }
                }
            }
        }
        return closestResolutionUrl;
    }
    function tryFixPlayerBuffering() {
        // NOTE: This "ActiveStreamInfo" variable isn't ideal but now that squad streams are removed it should be correct
        if (IsPlayerBuffering && LastPausePlay < Date.now() - DelayBetweenEachPlayerFixBufferAttempt && ActiveStreamInfo &&
            ((ActiveStreamInfo.IsShowingAd && FixPlayerBufferingInsideAds) || (!ActiveStreamInfo.IsShowingAd && FixPlayerBufferingOutsideAds))
           ) {
            console.log("Attempting to fix player buffering by doing pause/play");
            LastPausePlay = Date.now();
            postMessage({
                key: 'PauseResumePlayer'
            });
        }
    }
    async function processM3U8(url, textStr, realFetch) {
        var streamInfo = StreamInfosByUrl[url];
        if (!streamInfo) {
            return textStr;
        }
        ActiveStreamInfo = streamInfo;
        var haveAdTags = textStr.includes(AdSignifier) || SimulatedAdsDepth > 0;
        if (haveAdTags) {
            streamInfo.IsMidroll = textStr.includes('"MIDROLL"') || textStr.includes('"midroll"');
            if (!streamInfo.IsMidroll) {
                var lines = textStr.replace('\r', '').split('\n');
                for (var i = 0; i < lines.length; i++) {
                    var line = lines[i];
                    if (line.startsWith('#EXTINF') && lines.length > i + 1) {
                        if (!line.includes(',live') && !streamInfo.RequestedAds.has(lines[i + 1])) {
                            // Only request one .ts file per .m3u8 request to avoid making too many requests
                            //console.log('Fetch ad .ts file');
                            streamInfo.RequestedAds.add(lines[i + 1]);
                            fetch(lines[i + 1]).then((response)=>{response.blob()});
                            break;
                        }
                    }
                }
            }
            streamInfo.Resolution
            var currentResolution = streamInfo.Urls[url];
            if (!currentResolution) {
                console.log('Ads will leak due to missing resolution info for ' + url);
                return textStr;
            }
            if (streamInfo.ModifiedM3U8 && !streamInfo.IsUsingModifiedM3U8) {
                streamInfo.AdStartTime = Date.now();
            }
            if (!streamInfo.IsShowingAd) {
                streamInfo.AdStartTime = Date.now();
                streamInfo.IsShowingAd = true;
                if (streamInfo.ModifiedM3U8 && !streamInfo.IsUsingModifiedM3U8) {
                    postMessage({
                        key: 'ReloadPlayer'
                    });
                }
                postMessage({
                    key: 'ShowAdBlockBanner',
                    isMidroll: streamInfo.IsMidroll
                });
            }
            var backupPlayerType = null;
            var backupM3u8 = null;
            var fallbackM3u8 = null;
            var startIndex = 0;
            if ((streamInfo.ModifiedM3U8 && !streamInfo.IsUsingModifiedM3U8) ||
                (streamInfo.ModifiedM3U8 && streamInfo.AdStartTime > Date.now() - PlayerReloadLowResTime)
            ) {
                // When doing player reload there are a lot of requests which causes the backup stream to load in slow. Briefly prefer using the low res version to prevent long delays
                startIndex = BackupPlayerTypes.length - 1;
            }
            for (var playerTypeIndex = startIndex; !backupM3u8 && playerTypeIndex < BackupPlayerTypes.length; playerTypeIndex++) {
                var playerType = BackupPlayerTypes[playerTypeIndex];
                for (var i = 0; i < 2; i++) {
                    // This caches the m3u8 if it doesn't have ads. If the already existing cache has ads it fetches a new version (second loop)
                    var isFreshM3u8 = false;
                    var encodingsM3u8 = streamInfo.BackupEncodingsM3U8Cache[playerType];
                    if (!encodingsM3u8) {
                        isFreshM3u8 = true;
                        try {
                            var accessTokenResponse = await getAccessToken(streamInfo.ChannelName, playerType);
                            if (accessTokenResponse.status === 200) {
                                var accessToken = await accessTokenResponse.json();
                                var urlInfo = new URL('https://usher.ttvnw.net/api/' + (V2API ? 'v2/' : '') + 'channel/hls/' + streamInfo.ChannelName + '.m3u8' + streamInfo.UsherParams);
                                urlInfo.searchParams.set('sig', accessToken.data.streamPlaybackAccessToken.signature);
                                urlInfo.searchParams.set('token', accessToken.data.streamPlaybackAccessToken.value);
                                var encodingsM3u8Response = await realFetch(urlInfo.href);
                                if (encodingsM3u8Response.status === 200) {
                                    encodingsM3u8 = streamInfo.BackupEncodingsM3U8Cache[playerType] = await encodingsM3u8Response.text();
                                }
                            }
                        } catch (err) {}
                    }
                    if (encodingsM3u8) {
                        try {
                            var streamM3u8Url = getStreamUrlForResolution(encodingsM3u8, currentResolution);
                            var streamM3u8Response = await realFetch(streamM3u8Url);
                            if (streamM3u8Response.status == 200) {
                                var m3u8Text = await streamM3u8Response.text();
                                if (m3u8Text) {
                                    if (playerType == FallbackPlayerType) {
                                        fallbackM3u8 = m3u8Text;
                                    }
                                    if (!m3u8Text.includes(AdSignifier) && (SimulatedAdsDepth == 0 || playerTypeIndex >= SimulatedAdsDepth - 1)) {
                                        backupPlayerType = playerType;
                                        backupM3u8 = m3u8Text;
                                        break;
                                    }
                                }
                            }
                        } catch (err) {}
                    }
                    if (startIndex != 0) {
                        break;
                    }
                    streamInfo.BackupEncodingsM3U8Cache[playerType] = null;
                    if (isFreshM3u8) {
                        break;
                    }
                }
            }
            if (!backupM3u8 && fallbackM3u8) {
                backupPlayerType = FallbackPlayerType;
                backupM3u8 = fallbackM3u8;
            }
            if (backupM3u8) {
                textStr = backupM3u8;
                if (streamInfo.ActiveBackupPlayerType != backupPlayerType) {
                    streamInfo.ActiveBackupPlayerType = backupPlayerType;
                    console.log(`Blocking${(streamInfo.IsMidroll ? ' midroll ' : ' ')}ads (${backupPlayerType})`);
                }
            }
        } else if (streamInfo.IsShowingAd) {
            console.log('Finished blocking ads');
            streamInfo.IsShowingAd = false;
            streamInfo.ActiveBackupPlayerType = null;
            postMessage({
                key: streamInfo.IsUsingModifiedM3U8 ? 'ReloadPlayer' : 'PauseResumePlayer'
            });
            postMessage({
                key: 'HideAdBlockBanner'
            });
        }
        tryFixPlayerBuffering();
        return textStr;
    }
    function parseAttributes(str) {
        return Object.fromEntries(
            str.split(/(?:^|,)((?:[^=]*)=(?:"[^"]*"|[^,]*))/)
            .filter(Boolean)
            .map(x => {
                const idx = x.indexOf('=');
                const key = x.substring(0, idx);
                const value = x.substring(idx + 1);
                const num = Number(value);
                return [key, Number.isNaN(num) ? value.startsWith('"') ? JSON.parse(value) : value : num];
            }));
    }
    function getAccessToken(channelName, playerType) {
        var body = null;
        var templateQuery = 'query PlaybackAccessToken_Template($login: String!, $isLive: Boolean!, $vodID: ID!, $isVod: Boolean!, $playerType: String!) {  streamPlaybackAccessToken(channelName: $login, params: {platform: "android", playerBackend: "mediaplayer", playerType: $playerType}) @include(if: $isLive) {    value    signature    __typename  }  videoPlaybackAccessToken(id: $vodID, params: {platform: "android", playerBackend: "mediaplayer", playerType: $playerType}) @include(if: $isVod) {    value    signature    __typename  }}';
        body = {
            operationName: 'PlaybackAccessToken_Template',
            query: templateQuery,
            variables: {
                'isLive': true,
                'login': channelName,
                'isVod': false,
                'vodID': '',
                'playerType': playerType
            }
        };
        return gqlRequest(body);
    }
    function gqlRequest(body) {
        if (!GQLDeviceID) {
            var dcharacters = 'abcdefghijklmnopqrstuvwxyz0123456789';
            var dcharactersLength = dcharacters.length;
            for (var i = 0; i < 32; i++) {
                GQLDeviceID += dcharacters.charAt(Math.floor(Math.random() * dcharactersLength));
            }
        }
        var headers = {
            'Client-ID': ClientID,
            'Device-ID': GQLDeviceID,
            'X-Device-Id': GQLDeviceID,
            'Authorization': AuthorizationHeader,
            ...(ClientIntegrityHeader && {'Client-Integrity': ClientIntegrityHeader}),
            ...(ClientVersion && {'Client-Version': ClientVersion}),
            ...(ClientSession && {'Client-Session-Id': ClientSession})
        };
        return new Promise((resolve, reject) => {
            const requestId = Math.random().toString(36).substring(2, 15);
            const fetchRequest = {
                id: requestId,
                url: 'https://gql.twitch.tv/gql',
                options: {
                    method: 'POST',
                    body: JSON.stringify(body),
                    headers
                }
            };
            pendingFetchRequests.set(requestId, {
                resolve,
                reject
            });
            postMessage({
                key: 'FetchRequest',
                value: fetchRequest
            });
        });
    }
    function doTwitchPlayerTask(isPausePlay, isReload) {
        function findReactNode(root, constraint) {
            if (root.stateNode && constraint(root.stateNode)) {
                return root.stateNode;
            }
            let node = root.child;
            while (node) {
                const result = findReactNode(node, constraint);
                if (result) {
                    return result;
                }
                node = node.sibling;
            }
            return null;
        }
        function findReactRootNode() {
            var reactRootNode = null;
            var rootNode = document.querySelector('#root');
            if (rootNode && rootNode._reactRootContainer && rootNode._reactRootContainer._internalRoot && rootNode._reactRootContainer._internalRoot.current) {
                reactRootNode = rootNode._reactRootContainer._internalRoot.current;
            }
            if (reactRootNode == null) {
                var containerName = Object.keys(rootNode).find(x => x.startsWith('__reactContainer'));
                if (containerName != null) {
                    reactRootNode = rootNode[containerName];
                }
            }
            return reactRootNode;
        }
        var reactRootNode = findReactRootNode();
        if (!reactRootNode) {
            console.log('Could not find react root');
            return;
        }
        var player = findReactNode(reactRootNode, node => node.setPlayerActive && node.props && node.props.mediaPlayerInstance);
        player = player && player.props && player.props.mediaPlayerInstance ? player.props.mediaPlayerInstance : null;
        var playerState = findReactNode(reactRootNode, node => node.setSrc && node.setInitialPlaybackSettings);
        if (!player) {
            console.log('Could not find player');
            return;
        }
        if (!playerState) {
            console.log('Could not find player state');
            return;
        }
        if (player.paused || player.core?.paused) {
            return;
        }
        if (isPausePlay) {
            player.pause();
            player.play();
            return;
        }
        if (isReload) {
            const lsKeyQuality = 'video-quality';
            const lsKeyMuted = 'video-muted';
            const lsKeyVolume = 'volume';
            var currentQualityLS = localStorage.getItem(lsKeyQuality);
            var currentMutedLS = localStorage.getItem(lsKeyMuted);
            var currentVolumeLS = localStorage.getItem(lsKeyVolume);
            if (localStorageHookFailed && player?.core?.state) {
                localStorage.setItem(lsKeyMuted, JSON.stringify({default:player.core.state.muted}));
                localStorage.setItem(lsKeyVolume, player.core.state.volume);
            }
            if (localStorageHookFailed && player?.core?.state?.quality?.group) {
                localStorage.setItem(lsKeyQuality, JSON.stringify({default:player.core.state.quality.group}));
            }
            playerState.setSrc({ isNewMediaPlayerInstance: true, refreshAccessToken: true });
            player.play();
            if (localStorageHookFailed) {
                setTimeout(() => {
                    localStorage.setItem(lsKeyQuality, currentQualityLS);
                    localStorage.setItem(lsKeyMuted, currentMutedLS);
                    localStorage.setItem(lsKeyVolume, currentVolumeLS);
                }, 3000);
            }
            return;
        }
    }
    window.reloadTwitchPlayer = doTwitchPlayerTask;
    function postTwitchWorkerMessage(key, value) {
        twitchWorkers.forEach((worker) => {
            worker.postMessage({key: key, value: value});
        });
    }
    async function handleWorkerFetchRequest(fetchRequest) {
        try {
            const response = await window.realFetch(fetchRequest.url, fetchRequest.options);
            const responseBody = await response.text();
            const responseObject = {
                id: fetchRequest.id,
                status: response.status,
                statusText: response.statusText,
                headers: Object.fromEntries(response.headers.entries()),
                body: responseBody
            };
            return responseObject;
        } catch (error) {
            return {
                id: fetchRequest.id,
                error: error.message
            };
        }
    }
    function hookFetch() {
        var realFetch = window.fetch;
        window.realFetch = realFetch;
        window.fetch = function(url, init, ...args) {
            if (typeof url === 'string') {
                if (url.includes('gql')) {
                    //Device ID is used when notifying Twitch of ads.
                    var deviceId = init.headers['X-Device-Id'];
                    if (typeof deviceId !== 'string') {
                        deviceId = init.headers['Device-ID'];
                    }
                    if (typeof deviceId === 'string' && GQLDeviceID != deviceId) {
                        GQLDeviceID = deviceId;
                        postTwitchWorkerMessage('UpdateDeviceId', GQLDeviceID);
                    }
                    if (typeof init.headers['Client-Version'] === 'string' && init.headers['Client-Version'] !== ClientVersion) {
                        postTwitchWorkerMessage('UpdateClientVersion', ClientVersion = init.headers['Client-Version']);
                    }
                    if (typeof init.headers['Client-Session-Id'] === 'string' && init.headers['Client-Session-Id'] !== ClientSession) {
                        postTwitchWorkerMessage('UpdateClientSession', ClientSession = init.headers['Client-Session-Id']);
                    }
                    if (typeof init.headers['Client-Integrity'] === 'string' && init.headers['Client-Integrity'] !== ClientIntegrityHeader) {
                        postTwitchWorkerMessage('UpdateClientIntegrityHeader', ClientIntegrityHeader = init.headers['Client-Integrity']);
                    }
                    if (typeof init.headers['Authorization'] === 'string' && init.headers['Authorization'] !== AuthorizationHeader) {
                        postTwitchWorkerMessage('UpdateAuthorizationHeader', AuthorizationHeader = init.headers['Authorization']);
                    }
                    if (ForceAccessTokenPlayerType && typeof init.body === 'string' && init.body.includes('PlaybackAccessToken') && !init.body.includes('picture-by-picture')) {
                        let replacedPlayerType = '';
                        const newBody = JSON.parse(init.body);
                        if (Array.isArray(newBody)) {
                            for (let i = 0; i < newBody.length; i++) {
                                if (newBody[i]?.variables?.playerType && newBody[i]?.variables?.playerType !== ForceAccessTokenPlayerType) {
                                    replacedPlayerType = newBody[i].variables.playerType;
                                    newBody[i].variables.playerType = ForceAccessTokenPlayerType;
                                }
                            }
                        } else {
                            if (newBody?.variables?.playerType && newBody?.variables?.playerType !== ForceAccessTokenPlayerType) {
                                replacedPlayerType = newBody.variables.playerType;
                                newBody.variables.playerType = ForceAccessTokenPlayerType;
                            }
                        }
                        if (replacedPlayerType) {
                            console.log(`Replaced '${replacedPlayerType}' player type with '${ForceAccessTokenPlayerType}' player type`);
                            init.body = JSON.stringify(newBody);
                        }
                    }
                }
            }
            return realFetch.apply(this, arguments);
        };
    }
    function onContentLoaded() {
        // This stops Twitch from pausing the player when in another tab and an ad shows.
        // Taken from https://github.com/saucettv/VideoAdBlockForTwitch/blob/cefce9d2b565769c77e3666ac8234c3acfe20d83/chrome/content.js#L30
        try {
            Object.defineProperty(document, 'visibilityState', {
                get() {
                    return 'visible';
                }
            });
        }catch{}
        let hidden = document.__lookupGetter__('hidden');
        let webkitHidden = document.__lookupGetter__('webkitHidden');
        try {
            Object.defineProperty(document, 'hidden', {
                get() {
                    return false;
                }
            });
        }catch{}
        var block = e => {
            e.preventDefault();
            e.stopPropagation();
            e.stopImmediatePropagation();
        };
        let wasVideoPlaying = true;
        var visibilityChange = e => {
            if (typeof chrome !== 'undefined') {
                const videos = document.getElementsByTagName('video');
                if (videos.length > 0) {
                    if (hidden.apply(document) === true || (webkitHidden && webkitHidden.apply(document) === true)) {
                        wasVideoPlaying = !videos[0].paused && !videos[0].ended;
                    } else if (wasVideoPlaying && !videos[0].ended && videos[0].paused && videos[0].muted) {
                        videos[0].play();
                    }
                }
            }
            block(e);
        };
        document.addEventListener('visibilitychange', visibilityChange, true);
        document.addEventListener('webkitvisibilitychange', visibilityChange, true);
        document.addEventListener('mozvisibilitychange', visibilityChange, true);
        document.addEventListener('hasFocus', block, true);
        try {
            if (/Firefox/.test(navigator.userAgent)) {
                Object.defineProperty(document, 'mozHidden', {
                    get() {
                        return false;
                    }
                });
            } else {
                Object.defineProperty(document, 'webkitHidden', {
                    get() {
                        return false;
                    }
                });
            }
        }catch{}
        // Hooks for preserving volume / resolution
        var keysToCache = [
            'video-quality',
            'video-muted',
            'volume',
            'lowLatencyModeEnabled',// Low Latency
            'persistenceEnabled',// Mini Player
        ];
        var cachedValues = new Map();
        for (var i = 0; i < keysToCache.length; i++) {
            cachedValues.set(keysToCache[i], localStorage.getItem(keysToCache[i]));
        }
        var realSetItem = localStorage.setItem;
        localStorage.setItem = function(key, value) {
            if (cachedValues.has(key)) {
                cachedValues.set(key, value);
            }
            realSetItem.apply(this, arguments);
        };
        var realGetItem = localStorage.getItem;
        localStorage.getItem = function(key) {
            if (cachedValues.has(key)) {
                return cachedValues.get(key);
            }
            return realGetItem.apply(this, arguments);
        };
        if (!localStorage.getItem.toString().includes(Object.keys({cachedValues})[0])) {
            // These hooks are useful to preserve player state on player reload
            // Firefox doesn't allow hooking of localStorage functions but chrome does
            localStorageHookFailed = true;
        }
    }
    declareOptions(window);
    hookWindowWorker();
    hookFetch();
    if (document.readyState === "complete" || document.readyState === "loaded" || document.readyState === "interactive") {
        onContentLoaded();
    } else {
        window.addEventListener("DOMContentLoaded", function() {
            onContentLoaded();
        });
    }
    window.simulateAds = (depth) => {
        if (depth === undefined || depth < 0) {
            console.log('Ad depth paramter required (0 = no simulated ad, 1+ = use backup player for given depth)');
            return;
        }
        postTwitchWorkerMessage('SimulateAds', depth);
    };
})();