twitch-videoad.js text/javascript
(function() {
    if ( /(^|\.)twitch\.tv$/.test(document.location.hostname) === false ) { return; }
    function declareOptions(scope) {
        scope.AdSignifier = 'stitched';
        scope.ClientID = 'kimne78kx3ncx6brgo4mv6wki5h1ko';
        scope.ClientVersion = 'null';
        scope.ClientSession = 'null';
        scope.PlayerType2 = 'embed'; //Source
        scope.PlayerType3 = 'site'; //Source
        scope.PlayerType4 = 'autoplay'; //360p
        scope.CurrentChannelName = null;
        scope.UsherParams = null;
        scope.WasShowingAd = false;
        scope.GQLDeviceID = null;
        scope.IsSquadStream = false;
        scope.StreamInfos = [];
        scope.StreamInfosByUrl = [];
        scope.MainUrlByUrl = [];
        scope.EncodingCacheTimeout = 60000;
        scope.ClientIntegrityHeader = null;
        scope.AuthorizationHeader = null;
    }
    var twitchWorkers = [];
    var adBlockDiv = null;
    var OriginalVideoPlayerQuality = null;
    var IsPlayerAutoQuality = null;
    const oldWorker = window.Worker;
    function hookWindowWorker() {
        window.Worker = class Worker extends oldWorker {
            constructor(twitchBlobUrl, options) {
                var isTwitchWorker = false;
                try {
                    isTwitchWorker = new URL(twitchBlobUrl).origin.endsWith('.twitch.tv');
                } catch {}
                if (!isTwitchWorker) {
                    super(twitchBlobUrl, options);
                    return;
                }
                var newBlobStr = `
                    ${getStreamUrlForResolution.toString()}
                    ${getStreamForResolution.toString()}
                    ${stripUnusedParams.toString()}
                    ${processM3U8.toString()}
                    ${hookWorkerFetch.toString()}
                    ${declareOptions.toString()}
                    ${getAccessToken.toString()}
                    ${gqlRequest.toString()}
                    ${adRecordgqlPacket.toString()}
                    ${tryNotifyTwitch.toString()}
                    ${parseAttributes.toString()}
                    ${getWasmWorkerUrl.toString()}
                    var workerUrl = getWasmWorkerUrl('${twitchBlobUrl.replaceAll("'", "%27")}');
                    if (workerUrl && workerUrl.includes('assets.twitch.tv/assets/amazon-ivs-wasmworker')) {
                        declareOptions(self);
                        self.addEventListener('message', function(e) {
                            if (e.data.key == 'UpdateIsSquadStream') {
                                IsSquadStream = e.data.value;
                            } else 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;
                            }
                        });
                        hookWorkerFetch();
                        importScripts(workerUrl);
                    }
                `;
                super(URL.createObjectURL(new Blob([newBlobStr])), options);
                twitchWorkers.push(this);
                this.onmessage = function(e) {
                    if (e.data.key == 'ShowAdBlockBanner') {
                        if (adBlockDiv == null) {
                            adBlockDiv = getAdBlockDiv();
                        }
                        adBlockDiv.P.textContent = 'Blocking ads';
                        adBlockDiv.style.display = 'block';
                    } else if (e.data.key == 'HideAdBlockBanner') {
                        if (adBlockDiv == null) {
                            adBlockDiv = getAdBlockDiv();
                        }
                        adBlockDiv.style.display = 'none';
                    } else if (e.data.key == 'PauseResumePlayer') {
                        doTwitchPlayerTask(true, false, false, false, false);
                    } else if (e.data.key == 'ForceChangeQuality') {
                        //This is used to fix the bug where the video would freeze.
                        try {
                            //if (navigator.userAgent.toLowerCase().indexOf('firefox') == -1) {
                                return;
                            //}
                            var autoQuality = doTwitchPlayerTask(false, false, false, true, false);
                            var currentQuality = doTwitchPlayerTask(false, true, false, false, false);
                            if (IsPlayerAutoQuality == null) {
                                IsPlayerAutoQuality = autoQuality;
                            }
                            if (OriginalVideoPlayerQuality == null) {
                                OriginalVideoPlayerQuality = currentQuality;
                            }
                            if (!currentQuality.includes('360') || e.data.value != null) {
                                if (!OriginalVideoPlayerQuality.includes('360')) {
                                    var settingsMenu = document.querySelector('div[data-a-target="player-settings-menu"]');
                                    if (settingsMenu == null) {
                                        var settingsCog = document.querySelector('button[data-a-target="player-settings-button"]');
                                        if (settingsCog) {
                                            settingsCog.click();
                                            var qualityMenu = document.querySelector('button[data-a-target="player-settings-menu-item-quality"]');
                                            if (qualityMenu) {
                                                qualityMenu.click();
                                            }
                                            var lowQuality = document.querySelectorAll('input[data-a-target="tw-radio"');
                                            if (lowQuality) {
                                                var qualityToSelect = lowQuality.length - 2;
                                                if (e.data.value != null) {
                                                    if (e.data.value.includes('original')) {
                                                        e.data.value = OriginalVideoPlayerQuality;
                                                        if (IsPlayerAutoQuality) {
                                                            e.data.value = 'auto';
                                                        }
                                                    }
                                                    if (e.data.value.includes('160p')) {
                                                        qualityToSelect = 5;
                                                    }
                                                    if (e.data.value.includes('360p')) {
                                                        qualityToSelect = 4;
                                                    }
                                                    if (e.data.value.includes('480p')) {
                                                        qualityToSelect = 3;
                                                    }
                                                    if (e.data.value.includes('720p')) {
                                                        qualityToSelect = 2;
                                                    }
                                                    if (e.data.value.includes('822p')) {
                                                        qualityToSelect = 2;
                                                    }
                                                    if (e.data.value.includes('864p')) {
                                                        qualityToSelect = 2;
                                                    }
                                                    if (e.data.value.includes('900p')) {
                                                        qualityToSelect = 2;
                                                    }
                                                    if (e.data.value.includes('936p')) {
                                                        qualityToSelect = 2;
                                                    }
                                                    if (e.data.value.includes('960p')) {
                                                        qualityToSelect = 2;
                                                    }
                                                    if (e.data.value.includes('1080p')) {
                                                        qualityToSelect = 2;
                                                    }
                                                    if (e.data.value.includes('source')) {
                                                        qualityToSelect = 1;
                                                    }
                                                    if (e.data.value.includes('auto')) {
                                                        qualityToSelect = 0;
                                                    }
                                                }
                                                var currentQualityLS = window.localStorage.getItem('video-quality');
                                                lowQuality[qualityToSelect].click();
                                                settingsCog.click();
                                                window.localStorage.setItem('video-quality', currentQualityLS);
                                                if (e.data.value != null) {
                                                    OriginalVideoPlayerQuality = null;
                                                    IsPlayerAutoQuality = null;
                                                    doTwitchPlayerTask(false, false, false, true, true);
                                                }
                                            }
                                        }
                                    }
                                }
                            }
                        } catch (err) {
                            OriginalVideoPlayerQuality = null;
                            IsPlayerAutoQuality = null;
                        }
                    }
                };
                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;
                }
            }
        };
    }
    function getWasmWorkerUrl(twitchBlobUrl) {
        var req = new XMLHttpRequest();
        req.open('GET', twitchBlobUrl, false);
        req.overrideMimeType("text/javascript");
        req.send();
        return req.responseText.split("'")[1];
    }
    function hookWorkerFetch() {
        console.log('hookWorkerFetch');
        var realFetch = fetch;
        fetch = async function(url, options) {
            if (typeof url === 'string') {
                if (url.endsWith('m3u8')) {
                    return new Promise(function(resolve, reject) {
                        var processAfter = async function(response) {
                            //Here we check the m3u8 for any ads and also try fallback player types if needed.
                            var responseText = await response.text();
                            var weaverText = null;
                            weaverText = await processM3U8(url, responseText, realFetch, PlayerType2);
                            if (weaverText.includes(AdSignifier)) {
                                weaverText = await processM3U8(url, responseText, realFetch, PlayerType3);
                            }
                            if (weaverText.includes(AdSignifier)) {
                                weaverText = await processM3U8(url, responseText, realFetch, PlayerType4);
                            }
                            resolve(new Response(weaverText));
                        };
                        var send = function() {
                            return realFetch(url, options).then(function(response) {
                                processAfter(response);
                            })['catch'](function(err) {
                                reject(err);
                            });
                        };
                        send();
                    });
                } else if (url.includes('/api/channel/hls/')) {
                    var channelName = (new URL(url)).pathname.match(/([^\/]+)(?=\.\w+$)/)[0];
                    UsherParams = (new URL(url)).search;
                    CurrentChannelName = channelName;
                    //To prevent pause/resume loop for mid-rolls.
                    var isPBYPRequest = url.includes('picture-by-picture');
                    if (isPBYPRequest) {
                        url = '';
                    }
                    return new Promise(function(resolve, reject) {
                        var processAfter = async function(response) {
                            if (response.status == 200) {
                                encodingsM3u8 = await response.text();
                                var streamInfo = StreamInfos[channelName];
                                if (streamInfo == null) {
                                    StreamInfos[channelName] = streamInfo = {};
                                }
                                streamInfo.ChannelName = channelName;
                                streamInfo.RequestedAds = new Set();
                                streamInfo.Urls = [];// xxx.m3u8 -> { Resolution: "284x160", FrameRate: 30.0 }
                                streamInfo.EncodingsM3U8Cache = [];
                                streamInfo.EncodingsM3U8 = encodingsM3u8;
                                var lines = encodingsM3u8.replace('\r', '').split('\n');
                                for (var i = 0; i < lines.length; i++) {
                                    if (!lines[i].startsWith('#') && lines[i].includes('.m3u8')) {
                                        streamInfo.Urls[lines[i]] = -1;
                                        if (i > 0 && lines[i - 1].startsWith('#EXT-X-STREAM-INF')) {
                                            var attributes = parseAttributes(lines[i - 1]);
                                            var resolution = attributes['RESOLUTION'];
                                            var frameRate = attributes['FRAME-RATE'];
                                            if (resolution) {
                                                streamInfo.Urls[lines[i]] = {
                                                    Resolution: resolution,
                                                    FrameRate: frameRate
                                                };
                                            }
                                        }
                                        StreamInfosByUrl[lines[i]] = streamInfo;
                                        MainUrlByUrl[lines[i]] = url;
                                    }
                                }
                                resolve(new Response(encodingsM3u8));
                            } 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 getStreamUrlForResolution(encodingsM3u8, resolutionInfo, qualityOverrideStr) {
        var qualityOverride = 0;
        if (qualityOverrideStr && qualityOverrideStr.endsWith('p')) {
            qualityOverride = qualityOverrideStr.substr(0, qualityOverrideStr.length - 1) | 0;
        }
        var qualityOverrideFoundQuality = 0;
        var qualityOverrideFoundFrameRate = 0;
        var encodingsLines = encodingsM3u8.replace('\r', '').split('\n');
        var firstUrl = null;
        var lastUrl = null;
        var matchedResolutionUrl = null;
        var matchedFrameRate = false;
        for (var i = 0; i < encodingsLines.length; i++) {
            if (!encodingsLines[i].startsWith('#') && encodingsLines[i].includes('.m3u8')) {
                if (i > 0 && encodingsLines[i - 1].startsWith('#EXT-X-STREAM-INF')) {
                    var attributes = parseAttributes(encodingsLines[i - 1]);
                    var resolution = attributes['RESOLUTION'];
                    var frameRate = attributes['FRAME-RATE'];
                    if (resolution) {
                        if (qualityOverride) {
                            var quality = resolution.toLowerCase().split('x')[1];
                            if (quality == qualityOverride) {
                                qualityOverrideFoundQuality = quality;
                                qualityOverrideFoundFrameRate = frameRate;
                                matchedResolutionUrl = encodingsLines[i];
                                if (frameRate < 40) {
                                    //console.log(`qualityOverride(A) quality:${quality} frameRate:${frameRate}`);
                                    return matchedResolutionUrl;
                                }
                            } else if (quality < qualityOverride) {
                                //if (matchedResolutionUrl) {
                                //    console.log(`qualityOverride(B) quality:${qualityOverrideFoundQuality} frameRate:${qualityOverrideFoundFrameRate}`);
                                //} else {
                                //    console.log(`qualityOverride(C) quality:${quality} frameRate:${frameRate}`);
                                //}
                                return matchedResolutionUrl ? matchedResolutionUrl : encodingsLines[i];
                            }
                        } else if ((!resolutionInfo || resolution == resolutionInfo.Resolution) &&
                                   (!matchedResolutionUrl || (!matchedFrameRate && frameRate == resolutionInfo.FrameRate))) {
                            matchedResolutionUrl = encodingsLines[i];
                            matchedFrameRate = frameRate == resolutionInfo.FrameRate;
                            if (matchedFrameRate) {
                                return matchedResolutionUrl;
                            }
                        }
                    }
                    if (firstUrl == null) {
                        firstUrl = encodingsLines[i];
                    }
                    lastUrl = encodingsLines[i];
                }
            }
        }
        if (qualityOverride) {
            return lastUrl;
        }
        return matchedResolutionUrl ? matchedResolutionUrl : firstUrl;
    }
    async function getStreamForResolution(streamInfo, resolutionInfo, encodingsM3u8, fallbackStreamStr, playerType, realFetch) {
        var qualityOverride = null;
        if (streamInfo.EncodingsM3U8Cache[playerType].Resolution != resolutionInfo.Resolution ||
            streamInfo.EncodingsM3U8Cache[playerType].RequestTime < Date.now() - EncodingCacheTimeout) {
            console.log(`Blocking ads (type:${playerType}, resolution:${resolutionInfo.Resolution}, frameRate:${resolutionInfo.FrameRate}, qualityOverride:${qualityOverride})`);
        }
        streamInfo.EncodingsM3U8Cache[playerType].RequestTime = Date.now();
        streamInfo.EncodingsM3U8Cache[playerType].Value = encodingsM3u8;
        streamInfo.EncodingsM3U8Cache[playerType].Resolution = resolutionInfo.Resolution;
        var streamM3u8Url = getStreamUrlForResolution(encodingsM3u8, resolutionInfo, qualityOverride);
        var streamM3u8Response = await realFetch(streamM3u8Url);
        if (streamM3u8Response.status == 200) {
            var m3u8Text = await streamM3u8Response.text();
            WasShowingAd = true;
            postMessage({
                key: 'ShowAdBlockBanner'
            });
            postMessage({
                key: 'ForceChangeQuality'
            });
            if (!m3u8Text || m3u8Text.includes(AdSignifier)) {
                streamInfo.EncodingsM3U8Cache[playerType].Value = null;
            }
            return m3u8Text;
        } else {
            streamInfo.EncodingsM3U8Cache[playerType].Value = null;
            return fallbackStreamStr;
        }
    }
    function stripUnusedParams(str, params) {
        if (!params) {
            params = [ 'token', 'sig' ];
        }
        var tempUrl = new URL('https://localhost/' + str);
        for (var i = 0; i < params.length; i++) {
            tempUrl.searchParams.delete(params[i]);
        }
        return tempUrl.pathname.substring(1) + tempUrl.search;
    }
    async function processM3U8(url, textStr, realFetch, playerType) {
        //Checks the m3u8 for ads and if it finds one, instead returns an ad-free stream.
        var streamInfo = StreamInfosByUrl[url];
        //Ad blocking for squad streams is disabled due to the way multiple weaver urls are used. No workaround so far.
        if (IsSquadStream == true) {
            return textStr;
        }
        if (!textStr) {
            return textStr;
        }
        //Some live streams use mp4.
        if (!textStr.includes('.ts') && !textStr.includes('.mp4')) {
            return textStr;
        }
        var haveAdTags = textStr.includes(AdSignifier);
        if (haveAdTags) {
            var isMidroll = textStr.includes('"MIDROLL"') || textStr.includes('"midroll"');
            //Reduces ad frequency. TODO: Reduce the number of requests. This is really spamming Twitch with requests.
            if (!isMidroll) {
                if (playerType === PlayerType2) {
                    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;
                            }
                        }
                    }
                }
                try {
                    //tryNotifyTwitch(textStr);
                } catch (err) {}
            }
            var currentResolution = null;
            if (streamInfo && streamInfo.Urls) {
                for (const [resUrl, resInfo] of Object.entries(streamInfo.Urls)) {
                    if (resUrl == url) {
                        currentResolution = resInfo;
                        //console.log(resInfo.Resolution);
                        break;
                    }
                }
            }
            // Keep the m3u8 around for a little while (once per ad) before requesting a new one
            var encodingsM3U8Cache = streamInfo.EncodingsM3U8Cache[playerType];
            if (encodingsM3U8Cache) {
                if (encodingsM3U8Cache.Value && encodingsM3U8Cache.RequestTime >= Date.now() - EncodingCacheTimeout) {
                    try {
                        var result = getStreamForResolution(streamInfo, currentResolution, encodingsM3U8Cache.Value, null, playerType, realFetch);
                        if (result) {
                            return result;
                        }
                    } catch (err) {
                        encodingsM3U8Cache.Value = null;
                    }
                }
            } else {
                streamInfo.EncodingsM3U8Cache[playerType] = {
                    RequestTime: Date.now(),
                    Value: null,
                    Resolution: null
                };
            }
            var accessTokenResponse = await getAccessToken(CurrentChannelName, playerType);
            if (accessTokenResponse.status === 200) {
                var accessToken = await accessTokenResponse.json();
                try {
                    var urlInfo = new URL('https://usher.ttvnw.net/api/channel/hls/' + CurrentChannelName + '.m3u8' + 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) {
                        return getStreamForResolution(streamInfo, currentResolution, await encodingsM3u8Response.text(), textStr, playerType, realFetch);
                    } else {
                        return textStr;
                    }
                } catch (err) {}
                return textStr;
            } else {
                return textStr;
            }
        } else {
            if (WasShowingAd) {
                console.log('Finished blocking ads');
                WasShowingAd = false;
                //Here we put player back to original quality and remove the blocking message.
                postMessage({
                    key: 'ForceChangeQuality',
                    value: 'original'
                });
                postMessage({
                    key: 'PauseResumePlayer'
                });
                postMessage({
                    key: 'HideAdBlockBanner'
                });
            }
            return textStr;
        }
        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];
            }));
    }
    async function tryNotifyTwitch(streamM3u8) {
        //We notify that an ad was requested but was not visible and was also muted.
        var matches = streamM3u8.match(/#EXT-X-DATERANGE:(ID="stitched-ad-[^\n]+)\n/);
        if (matches.length > 1) {
            const attrString = matches[1];
            const attr = parseAttributes(attrString);
            var podLength = parseInt(attr['X-TV-TWITCH-AD-POD-LENGTH'] ? attr['X-TV-TWITCH-AD-POD-LENGTH'] : '1');
            var podPosition = parseInt(attr['X-TV-TWITCH-AD-POD-POSITION'] ? attr['X-TV-TWITCH-AD-POD-POSITION'] : '0');
            var radToken = attr['X-TV-TWITCH-AD-RADS-TOKEN'];
            var lineItemId = attr['X-TV-TWITCH-AD-LINE-ITEM-ID'];
            var orderId = attr['X-TV-TWITCH-AD-ORDER-ID'];
            var creativeId = attr['X-TV-TWITCH-AD-CREATIVE-ID'];
            var adId = attr['X-TV-TWITCH-AD-ADVERTISER-ID'];
            var rollType = attr['X-TV-TWITCH-AD-ROLL-TYPE'].toLowerCase();
            const baseData = {
                stitched: true,
                roll_type: rollType,
                player_mute: true,
                player_volume: 0.0,
                visible: false,
            };
            for (let podPosition = 0; podPosition < podLength; podPosition++) {
                const extendedData = {
                    ...baseData,
                    ad_id: adId,
                    ad_position: podPosition,
                    duration: 0,
                    creative_id: creativeId,
                    total_ads: podLength,
                    order_id: orderId,
                    line_item_id: lineItemId,
                };
                await gqlRequest(adRecordgqlPacket('video_ad_impression', radToken, extendedData));
                for (let quartile = 0; quartile < 4; quartile++) {
                    await gqlRequest(
                        adRecordgqlPacket('video_ad_quartile_complete', radToken, {
                            ...extendedData,
                            quartile: quartile + 1,
                        })
                    );
                }
                await gqlRequest(adRecordgqlPacket('video_ad_pod_complete', radToken, baseData));
            }
        }
    }
    function adRecordgqlPacket(event, radToken, payload) {
        return [{
            operationName: 'ClientSideAdEventHandling_RecordAdEvent',
            variables: {
                input: {
                    eventName: event,
                    eventPayload: JSON.stringify(payload),
                    radToken,
                },
            },
            extensions: {
                persistedQuery: {
                    version: 1,
                    sha256Hash: '7e6c69e6eb59f8ccb97ab73686f3d8b7d85a72a0298745ccd8bfc68e4054ca5b',
                },
            },
        }];
    }
    function getAccessToken(channelName, playerType, realFetch) {
        var body = null;
        var templateQuery = 'query PlaybackAccessToken_Template($login: String!, $isLive: Boolean!, $vodID: ID!, $isVod: Boolean!, $playerType: String!) {  streamPlaybackAccessToken(channelName: $login, params: {platform: "ios", playerBackend: "mediaplayer", playerType: $playerType}) @include(if: $isLive) {    value    signature    __typename  }  videoPlaybackAccessToken(id: $vodID, params: {platform: "ios", 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, realFetch);
    }
    function gqlRequest(body, realFetch) {
        if (ClientIntegrityHeader == null) {
            //console.warn('ClientIntegrityHeader is null');
            //throw 'ClientIntegrityHeader is null';
        }
        var fetchFunc = realFetch ? realFetch : fetch;
        if (!GQLDeviceID) {
            var dcharacters = 'abcdefghijklmnopqrstuvwxyz0123456789';
            var dcharactersLength = dcharacters.length;
            for (var i = 0; i < 32; i++) {
                GQLDeviceID += dcharacters.charAt(Math.floor(Math.random() * dcharactersLength));
            }
        }
        return fetchFunc('https://gql.twitch.tv/gql', {
            method: 'POST',
            body: JSON.stringify(body),
            headers: {
                'Client-ID': ClientID,
                'Client-Integrity': ClientIntegrityHeader,
                'Device-ID': GQLDeviceID,
                'X-Device-Id': GQLDeviceID,
                'Client-Version': ClientVersion,
                'Client-Session-Id': ClientSession,
                'Authorization': AuthorizationHeader
            }
        });
    }
    function doTwitchPlayerTask(isPausePlay, isCheckQuality, isCorrectBuffer, isAutoQuality, setAutoQuality) {
        //This will do an instant pause/play to return to original quality once the ad is finished.
        //We also use this function to get the current video player quality set by the user.
        //We also use this function to quickly pause/play the player when switching tabs to stop delays.
        try {
            var videoController = null;
            var videoPlayer = null;
            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;
            }
            videoPlayer = findReactNode(reactRootNode, node => node.setPlayerActive && node.props && node.props.mediaPlayerInstance);
            videoPlayer = videoPlayer && videoPlayer.props && videoPlayer.props.mediaPlayerInstance ? videoPlayer.props.mediaPlayerInstance : null;
            if (isPausePlay) {
                videoPlayer.pause();
                videoPlayer.play();
                return;
            }
            if (isCheckQuality) {
                if (typeof videoPlayer.getQuality() == 'undefined') {
                    return;
                }
                var playerQuality = JSON.stringify(videoPlayer.getQuality());
                if (playerQuality) {
                    return playerQuality;
                } else {
                    return;
                }
            }
            if (isAutoQuality) {
                if (typeof videoPlayer.isAutoQualityMode() == 'undefined') {
                    return false;
                }
                var autoQuality = videoPlayer.isAutoQualityMode();
                if (autoQuality) {
                    videoPlayer.setAutoQualityMode(false);
                    return autoQuality;
                } else {
                    return false;
                }
            }
            if (setAutoQuality) {
                videoPlayer.setAutoQualityMode(true);
                return;
            }
            //This only happens when switching tabs and is to correct the high latency caused when opening background tabs and going to them at a later time.
            //We check that this is a live stream by the page URL, to prevent vod/clip pause/plays.
            try {
                var currentPageURL = document.URL;
                var isLive = true;
                if (currentPageURL.includes('videos/') || currentPageURL.includes('clip/')) {
                    isLive = false;
                }
                if (isCorrectBuffer && isLive) {
                    //A timer is needed due to the player not resuming without it.
                    setTimeout(function() {
                        //If latency to broadcaster is above 5 or 15 seconds upon switching tabs, we pause and play the player to reset the latency.
                        //If latency is between 0-6, user can manually pause and resume to reset latency further.
                        if (videoPlayer.isLiveLowLatency() && videoPlayer.getLiveLatency() > 5) {
                            videoPlayer.pause();
                            videoPlayer.play();
                        } else if (videoPlayer.getLiveLatency() > 15) {
                            videoPlayer.pause();
                            videoPlayer.play();
                        }
                    }, 3000);
                }
            } catch (err) {}
        } catch (err) {}
    }
    window.reloadTwitchPlayer = doTwitchPlayerTask;
    var localDeviceID = null;
    localDeviceID = window.localStorage.getItem('local_copy_unique_id');
    function postTwitchWorkerMessage(key, value) {
        twitchWorkers.forEach((worker) => {
            worker.postMessage({key: key, value: value});
        });
    }
    function hookFetch() {
        var realFetch = window.fetch;
        window.fetch = function(url, init, ...args) {
            if (typeof url === 'string') {
                //Check if squad stream.
                if (window.location.pathname.includes('/squad')) {
                    postTwitchWorkerMessage('UpdateIsSquadStream', true);
                } else {
                    postTwitchWorkerMessage('UpdateIsSquadStream', false);
                }
                if (url.includes('/access_token') || 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'];
                    }
                    //Added to prevent eventual UBlock conflicts.
                    if (typeof deviceId === 'string' && !deviceId.includes('twitch-web-wall-mason')) {
                        GQLDeviceID = deviceId;
                    } else if (localDeviceID) {
                        GQLDeviceID = localDeviceID.replace('"', '');
                        GQLDeviceID = GQLDeviceID.replace('"', '');
                    }
                    if (GQLDeviceID) {
                        if (typeof init.headers['X-Device-Id'] === 'string') {
                            init.headers['X-Device-Id'] = GQLDeviceID;
                        }
                        if (typeof init.headers['Device-ID'] === 'string') {
                            init.headers['Device-ID'] = GQLDeviceID;
                        }
                        postTwitchWorkerMessage('UpdateDeviceId', GQLDeviceID);
                    }
                    //Client version is used in GQL requests.
                    var clientVersion = init.headers['Client-Version'];
                    if (clientVersion && typeof clientVersion == 'string') {
                        ClientVersion = clientVersion;
                    }
                    if (ClientVersion) {
                        postTwitchWorkerMessage('UpdateClientVersion', ClientVersion);
                    }
                    //Client session is used in GQL requests.
                    var clientSession = init.headers['Client-Session-Id'];
                    if (clientSession && typeof clientSession == 'string') {
                        ClientSession = clientSession;
                    }
                    if (ClientSession) {
                        postTwitchWorkerMessage('UpdateClientSession', ClientSession);
                    }
                    //Client ID is used in GQL requests.
                    if (url.includes('gql') && init && typeof init.body === 'string' && init.body.includes('PlaybackAccessToken')) {
                        var clientId = init.headers['Client-ID'];
                        if (clientId && typeof clientId == 'string') {
                            ClientID = clientId;
                        } else {
                            clientId = init.headers['Client-Id'];
                            if (clientId && typeof clientId == 'string') {
                                ClientID = clientId;
                            }
                        }
                        if (ClientID) {
                            postTwitchWorkerMessage('UpdateClientId', ClientID);
                        }
                        //Client integrity header
                        ClientIntegrityHeader = init.headers['Client-Integrity'];
                        if (ClientIntegrityHeader) {
                            postTwitchWorkerMessage('UpdateClientIntegrityHeader', ClientIntegrityHeader);
                        }
                        //Authorization header
                        AuthorizationHeader = init.headers['Authorization'];
                        if (AuthorizationHeader) {
                            postTwitchWorkerMessage('UpdateAuthorizationHeader', AuthorizationHeader);
                        }
                    }
                    //To prevent pause/resume loop for mid-rolls.
                    if (url.includes('gql') && init && typeof init.body === 'string' && init.body.includes('PlaybackAccessToken') && init.body.includes('picture-by-picture')) {
                        init.body = '';
                    }
                    var isPBYPRequest = url.includes('picture-by-picture');
                    if (isPBYPRequest) {
                        url = '';
                    }
                }
            }
            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{}
        try {
            Object.defineProperty(document, 'hidden', {
                get() {
                    return false;
                }
            });
        }catch{}
        var block = e => {
            e.preventDefault();
            e.stopPropagation();
            e.stopImmediatePropagation();
        };
        document.addEventListener('visibilitychange', block, true);
        document.addEventListener('webkitvisibilitychange', block, true);
        document.addEventListener('mozvisibilitychange', block, 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{}
    }
    if (window.Worker.toString().includes('twitch')) {
        console.log('Twitch Worker is already hooked');
    } else {
        window.reloadTwitchPlayer = reloadTwitchPlayer;
        declareOptions(window);
        hookWindowWorker();
        hookFetch();
        if (document.readyState === "complete" || document.readyState === "loaded" || document.readyState === "interactive") {
            onContentLoaded();
        } else {
            window.addEventListener("DOMContentLoaded", function() {
                onContentLoaded();
            });
        }
    }
})();