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page.js
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/*
FlagPlayer - A lightweight YouTube frontend
Copyright (C) 2019 Seneral
Licensed under AGPLv3
See https://github.com/Seneral/FlagPlayer for details
*/
/* ------------------------------------ */
/* ---- TABLE OF CONTENTS ------------- */
/*
-- HTML
-- Variables
Control Functions
-- Init
-- Preferences
-- Page Content
-- Paged Content
-- Home
-- Playlist
-- Search
-- Channel
- Media
-- Media State
-- Media Playback
Database
YouTube
- Page Navigation
- YouTube Extraction
-- Playlist
-- Search
-- Channel
-- Watch
-- Related Videos
-- Comments
- Stream Decoding
UI Content
-- UI Layout
-- UI State
-- Formatting
-- UI Settings
-- UI Home
-- UI Player
-- UI Video
-- UI Related
-- UI Comments
-- UI Search
-- UI Channel
-- UI Playlist
UI Interactivity
-- UI Helpers
-- UI Controls
-- UI Generic
-- UI Timeline
-- UI Control Bar
-- UI Handlers
UI Callbacks
-- DOM Handlers
-- Button Handlers
-- Mouse Handlers
-- Keyboard Handlers
-- Media Handlers
Media Functions
-- Streams
-- State
-- Playback
Utility Functions
-- Requests
-- Experimental
-- HTML Bin
Data
*/
/* ------------------------------------ */
function I (i) { return document.getElementById(i); }
function S (i,v) { localStorage.setItem(i,v); }
function G (i) { return localStorage.getItem(i); }
function setDisplay (i,v) { I(i).style.display = v; }
Element.prototype.toggleAttr = function toggleAttr(name) {
if (this.hasAttribute(name)) {
this.removeAttribute(name);
return false;
}
this.setAttribute(name, "");
return true;
};
/* -------------------- */
/* ---- HTML ---------- */
/* -------------------- */
// Container
var ht_container = I("container");
var ht_content = I("content");
var ht_mobile = I("mobile");
var ht_main = I("main");
var ht_side = I("side");
// Sections
var sec_player = I("player");
var sec_playlist = I("playlist");
var sec_video = I("video");
var sec_related = I("related");
var sec_comments = I("comments");
var sec_search = I("search");
var sec_banner = I("banner");
var sec_channel = I("channel");
var sec_home = I("home");
var sec_cache = I("cache");
// Main media elements
var videoMedia = I("videoMedia");
var audioMedia = I("audioMedia");
var controlBar = I("controlBar");
// Frequently accessed control bar elements
var timeLabel = I("timeLabel");
var timelineControl = I("tlControl");
var timelinePosition = I("tlPosition");
var timelineProgress = I("tlProgress");
var timelinePeeking = I("tlPeeking");
var timelineBuffered = I("tlBuffered");
// Other
var ht_playlistVideos = I("plVideos");
/* -------------------- */
/* ---- VARIABLES ----- */
/* -------------------- */
/* SERVICE WORKER */
var sw_current;
var sw_updated;
var sw_refreshing;
/* DATABASE */
var db_database;
var db_loading = false;
var db_accessCallbacks = [];
var db_indexLoading = false;
var db_indexCallbacks = [];
var db_playlists; // [ { listID, title, description, author, count, thumbID, videos [ videoID ] } ]
var db_cachedVideos;
/* PAGE STATE */
var Page = { None: 0, Home: 1, Media: 2, Search: 3, Channel: 4, Playlist: 5, Cache: 6 }
var ct_page = Page.Home;
var ct_pagePlaylist;
var ct_view; // explicit view request (cache, media, etc)
var ct_temp = { fullscreen: false, options: false, settings: false, loop: false, } // options: player; settings: page
var ct_pagedContent = []; // id, container, autoTrigger, triggerDistance, aborted, loading, loadFunc, page, data
var ct_isDesktop;
var ct_pref = {};
var ct_shareData = {};
/* MEDIA STATE */
var State = { None: 0, Loading: 1, PreStart: 2, Started: 3, Ended: 4, Error: 5 }
var md_state = State.None; // Lifetime: loading - prestart (if autoplay denied) - started - ended
var md_sources = undefined; // { video: url, audio: url }
var md_paused = true; // Current state or intent
var md_flags = { buffering: false, seeking: false } // Only valid during State.Started
var md_isPlaying = function () { return md_sources && md_state == State.Started && !md_paused && !md_flags.buffering && !md_flags.seeking; };
var md_curTime = 0, md_totalTime = 0;
var md_errorText = "An Error occured!"; // Error message if md_state == State.Error
var md_pref = {}; // volume, muted, playlistRandom, autoplay, dash, dashVideo, dashContainer, legacyVideo
/* YOUTUBE CONTENT */
var yt_url; // URL of respective youtube content
var yt_page; // cookies {}, secrets {}, initialData {}, playerConfig {}, videoDetail {}, html "", object {}, unavailable
// secrets: csn, xsrfToken, idToken, innertubeAPIKey, clientName, clientVersion, pageCL, pageLabel, variantsChecksum, visitorData, ...
// Playlist
var yt_playlistID;
var yt_playlist; // listID, title, author, views, description, videos [ video {} ]
// video: title, videoID, length, thumbnailURL, addedDate, uploadedDate, uploader {}, views, likes, dislikes, comments, tags []
// uploader: name, channelID, url
// Video
var yt_videoID;
var yt_video; // ageRestricted, blocked, meta {}, streams [ stream {} ], related {}, commentData {}
// meta: title, description, uploader {}, uploadedDate, thumbnailURL, length, views, likes, dislikes, metadatata[{ name, data }], category
// uploader: name, url, channelID, userID, profileImg, badge, subscribers
// stream: url, itag, hasVideo, hasAudio, isDash, mimeType, container, isLive, isStereo,
// vCodec, vBR (Bitrate), vResX, vResY, vFPS,
// aCodec, aBR (Bitrate), aSR (Sample Rate), aChannels
// Search
var yt_searchTerms;
var yt_searchResults; // hits, videos [video {}]
// video: title, videoID, length, thumbnailURL, addedDate, uploadedDate, uploader {}, views, likes, dislikes, comments, tags []
// uploader: name, channelID, url
// Channel
var yt_channelID; // channel, user
var yt_channel; // meta {}, upload {}
// meta: title, channelID, profileImg, bannerImg, url, subscribers, description, links { title icon link }
// upload: videos [video {}], conToken
// video: title, videoID, views, length, thumbnailURL uploadedTimeAgoText
/* TEMPORARY STATE */
var ct_online; // Flag if last request suceeded
var ct_isAdvancedCorsHost; // Boolean: Supports cookie-passing for (with others) comments
var ct_traversedHistory; // Prevent messing with history when traversing
var ct_timerAutoplay; // Timer ID for video end autoplay timer
var ui_cntControlBar; // For control bar retraction when mouse is unmoving
var ui_timerIndicator; // Timer ID for the current temporary indicator (pause/plax) on the video screen
var ui_dragSlider; // Currently dragging a slider?
var ui_dragSliderElement; // Currently dragged slider element
var ui_plScrollPos; // Scroll Position of Playlist window - cached in order to prevent forced reflow during adaptive loading
var ui_plScrollDirty; // Dirty flag if scroll position has changed while playlist was collapsed
var ht_placeholder; // Playlist Element Placeholder used for initializing a playlist
var md_timerSyncMedia; // Timer ID for next media sync attempt (dash only)
var md_timerCheckBuffering; // Timer ID for next media buffering check (and start video when ready)
var md_cntBufferPause; // Count of intervals (50ms) in which buffered amount did not change
var md_lastBuffer; // Last known buffered amount, used because buffered events don't always fire
var md_attemptPlayStarted; // Flag to prevent multiple simultaneous start play attempts
var md_attemptPause; // Flag to indicate play start attempt is to be aborted
/* CONSTANTS */
const BASE_URL = location.protocol + '//' + location.host + location.pathname;
const LANG_INTERFACE = "en;q=0.9";
const LANG_CONTENT = "en;q=0.9"; // content language (auto-translate) - * should remove translation
const VIRT_CACHE = "https://flagplayer.seneral.dev/caches/vd-"; // Virtual adress used for caching. Doesn't actually exist, but needs to be https
const HOST_YT = "https://www.youtube.com";
const HOST_YT_MOBILE = "https://m.youtube.com";
const HOST_YT_IMG = "https://i.ytimg.com/vi/"; // https://i.ytimg.com/vi/ or https://img.youtube.com/vi/
const HOST_CORS = "https://flagplayer-cors.herokuapp.com/"; // Default value only
//"http://localhost:8080/";
//"https://cors-anywhere.herokuapp.com/";
//"http://allow-any-origin.appspot.com/";
//"https://secret-ocean-49799.herokuapp.com/";
//"https://test.cors.workers.dev/";
//"https://crossorigin.me/"
//endregion
/* -------------------------------------------------------------------------------------------------------------- */
/* ----------------- SERVICE WORKER ----------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------------------------------------------- */
function sw_install () {
// Setup service worker for caching control
if ("serviceWorker" in navigator) {
navigator.serviceWorker.oncontrollerchange = function () {
if (sw_refreshing) return;
window.location.reload();
sw_refreshing = true;
};
navigator.serviceWorker.register("./sw.js").then(function(registration) {
// Get current service worker
sw_current = navigator.serviceWorker.controller;
if (sw_current) console.log("Successfully installed service worker: Caching and Offline Mode are available!");
else console.log("Successfully installed service worker: Caching and Offline Mode are available after reload!");
// Check for updates
registration.onupdatefound = function () {
if (!navigator.serviceWorker.controller)
return; // not an update, but initial installation
console.log("Found new service worker version!");
var update = function () {
sw_updated = registration.waiting || registration.active;
var not = ui_setNotification("newVersionPanel", 'A new version is available! <button>Update now</button>');
not.children[0].onclick = function() {
sw_updated.postMessage({ action: "skipWaiting" });
not.notClose();
};
console.log("New service worker version ready for activation!");
};
var installing = registration.installing;
if (installing) { // wait until installed to update
installing.onstatechange = function () {
if (installing.state == "installed" || installing.state == "active")
update();
};
}
else update();
};
if (registration.waiting) // Trigger after initial detection
registration.onupdatefound();
}, function(e) {
console.warn("Failed to install service worker: Caching and Offline Mode will be unavailable!");
});
}
}
/* -------------------------------------------------------------------------------------------------------------- */
/* ----------------- CONTROL FUNCTIONS -------------------------------------------------------------------------- */
/* -------------------------------------------------------------------------------------------------------------- */
//region
/* -------------------- */
/* ---- INIT ---------- */
/* -------------------- */
function ct_init () {
ct_loadPreferences();
ui_updatePageLayout();
ui_initStates();
ct_newPageState();
ui_setupEventHandlers();
ct_readParameters();
ct_loadContent();
sw_install();
}
/* -------------------- */
/* ---- PREFERENCES --- */
/* -------------------- */
function ct_loadPreferences () {
// Playback options
md_pref = {};
md_pref.dash = true;//G("prefDash") == "false"? false : true;
md_pref.legacyVideo = G("prefLegacyVideo") || "BEST"; // NONE - BEST - WORST - <Resolution>
md_pref.dashVideo = G("prefDashVideo") || "72030"; // NONE - BEST - WORST - <Resolution*100+FPS>
md_pref.dashAudio = G("prefDashAudio") || "160"; // NONE - BEST - WORST - <Bitrate>
md_pref.dashContainer = G("prefDashContainer") || "webm"; // webm - mp4
md_pref.muted = G("prefMuted") == "true"? true : false;
md_pref.volume = G("prefVolume") != undefined? parseFloat(G("prefVolume")) : 1;
// Page Settings
ct_pref = {};
ct_pref.playlistRandom = G("prefPlaylistRandom") == "false"? false : true;
ct_pref.autoplay = G("prefAutoplay") == "false"? false : true;
ct_pref.theme = G("prefTheme") || "DARK";
ct_pref.corsAPIHost = G("prefCorsAPIHost") || HOST_CORS;
ct_pref.relatedVideos = G("prefRelated") || "ALL";
ct_pref.filterCategories = (G("prefFilterCategories") || "").split(",").map(c => parseInt(c));
ct_pref.filterHideCompletely = G("prefFilterHideCompletely") == "false"? false : true;
ct_pref.loadComments = G("prefLoadComments") == "false"? false : true;
ct_pref.cacheAudioQuality = G("prefCacheAudioQuality") || "128";
ct_pref.cacheForceUse = G("prefCacheForceUse") == "false"? false : true;
ct_pref.smallPlayer = G("prefPlayerSmall") == "true"? true : false;
}
function ct_savePreferences () {
// Playback Options
//S("prefDash", md_pref.dash);
if (md_sources) {
S("prefLegacyVideo", md_pref.legacyVideo);
S("prefDashVideo", md_pref.dashVideo);
S("prefDashAudio", md_pref.dashAudio);
S("prefDashContainer", md_pref.dashContainer);
}
S("prefMuted", md_pref.muted);
S("prefVolume", md_pref.volume);
// Page Settings
S("prefAutoplay", ct_pref.autoplay);
S("prefPlaylistRandom", ct_pref.playlistRandom);
S("prefTheme", ct_pref.theme);
S("prefRelated", ct_pref.relatedVideos);
S("prefFilterCategories", ct_pref.filterCategories.join(","));
S("prefFilterHideCompletely", ct_pref.filterHideCompletely);
S("prefLoadComments", ct_pref.loadComments);
S("prefCorsAPIHost", ct_pref.corsAPIHost);
S("prefCacheAudioQuality", ct_pref.cacheAudioQuality);
S("prefCacheForceUse", ct_pref.cacheForceUse);
S("prefPlayerSmall", ct_pref.smallPlayer);
}
/* -------------------- */
/* ---- PAGE CONTENT -- */
/* -------------------- */
function ct_readParameters () {
var params = new URLSearchParams(window.location.search);
// Read parameters from URL
ct_view = params.get("view");
yt_playlistID = params.get("list");
yt_videoID = params.get("v");
yt_channelID = { channel: params.get("ch"), channelName: params.get("c"), user: params.get("u") };
yt_searchTerms = params.get("q");
ct_shareData = params.get("shURL") || params.get("shText") || params.get("shTitle");
// Validate parameters
if (yt_videoID && yt_videoID.length != 11)
yt_videoID = undefined;
if (!yt_channelID.user && !yt_channelID.channelName && !(yt_channelID.channel && yt_channelID.channel.length == 24 && yt_channelID.channel.startsWith("UC")))
yt_channelID = undefined;
yt_searchTerms = yt_searchTerms? decodeURIComponent(yt_searchTerms) : undefined;
}
function ct_resetContent () {
ct_page = Page.None;
ct_view = undefined;
ct_shareData = undefined;
// Discard main content (not including playlist)
ct_resetSearch();
ct_resetChannel();
ct_mediaUnload();
ui_resetHome();
ui_resetCache();
// If on mobile, collapse playlist
if (!ct_isDesktop) sec_playlist.setAttribute("collapsed", "");
}
function ct_loadContent () {
// Primary Content
if (ct_shareData && ct_shareData.length > 1) {
ct_navSearch(ct_shareData, true);
return;
} else if (ct_view == "cache") {
ct_page = Page.Cache;
ct_loadCache();
} else if (yt_videoID) {
ct_page = Page.Media;
ct_loadMedia ();
} else if (yt_channelID) {
ct_page = Page.Channel;
ct_loadChannel();
} else if (yt_searchTerms) {
ct_page = Page.Search;
ct_loadSearch();
//} else if (yt_playlistID) {
// ct_page = Page.Playlist;
} else {
ct_page = Page.Home;
ct_loadHome();
}
// Secondary Content (can be primary)
if (yt_playlistID) {
ct_pagePlaylist = true;
ct_loadPlaylist();
} else {
ct_pagePlaylist = false;
}
ct_updatePageState();
}
function ct_newPageState () { // Register new page
history.pushState({}, "FlagPlayer");
}
function ct_updatePageState () { // Update page with new information
var url = new URL(window.location.href);
var state = history && history.state? history.state : {};
yt_url = HOST_YT;
url.searchParams.delete("shTitle");
url.searchParams.delete("shText");
url.searchParams.delete("shURL");
if (ct_page == Page.Home)
state.title = "Home | FlagPlayer";
if (ct_page == Page.Cache) {
state.title = "Cache | FlagPlayer";
url.searchParams.set("view", "cache");
} else if (url.searchParams.get("view") == "cache")
url.searchParams.delete("view");
if (ct_page == Page.Media) {
if (yt_video && yt_video.loaded) state.title = yt_video.meta.title + " | FlagPlayer";
else if (!state.title) state.title = "Loading | FlagPlayer";
url.searchParams.set("v", yt_videoID);
yt_url += "/watch?v=" + yt_videoID;
} else url.searchParams.delete("v");
if (ct_page == Page.Channel) {
if (yt_channel && yt_channel.meta) state.title = yt_channel.meta.name + " | FlagPlayer";
else if (!state.title) state.title = "Channel | FlagPlayer";
if (yt_channelID.user) {
url.searchParams.set("u", yt_channelID.user);
url.searchParams.delete("c");
url.searchParams.delete("ch");
yt_url += "/user/" + yt_channelID.user;
} else if (yt_channelID.channelName) {
url.searchParams.set("c", yt_channelID.channelName);
url.searchParams.delete("u");
url.searchParams.delete("ch");
yt_url += "/c/" + yt_channelID.channelName;
} else if (yt_channelID.channel) {
url.searchParams.set("ch", yt_channelID.channel);
url.searchParams.delete("u");
url.searchParams.delete("c");
yt_url += "/channel/" + yt_channelID.channel;
}
} else {
url.searchParams.delete("u");
url.searchParams.delete("c");
url.searchParams.delete("ch");
}
if (ct_page == Page.Search) {
state.title = "'" + yt_searchTerms + "' - Search | FlagPlayer";
url.searchParams.set("q", encodeURIComponent(yt_searchTerms));
yt_url += "/results?search_query=" + encodeURIComponent(yt_searchTerms);
} else url.searchParams.delete("q");
if (ct_pagePlaylist) {
url.searchParams.set("list", yt_playlistID);
if (ct_page == Page.Playlist) yt_url += "/playlist?list=" + yt_playlistID;
if (ct_page == Page.Media) yt_url += "&list=" + yt_playlistID;
(I("youtubePLLink") || {}).href = HOST_YT + "/playlist?list=" + yt_playlistID;
} else url.searchParams.delete("list");
// TODO: only delete if not for current video
url.searchParams.delete("t");
// Update state
state.title = state.title || "FlagPlayer";
document.title = state.title;
if (history && history.replaceState) history.replaceState(state, state.title, url.href);
else window.location = url; // Triggers reload, not perfect but better than no link update
[].forEach.call(document.getElementsByClassName("youtubeLink"), function (l) { l.href = yt_url });
}
function ct_getNavLink(navID) {
var i = navID.indexOf("=");
if (i != -1) {
var link = BASE_URL + "?";
// Prepend current playlist ID
if (navID.substring(0, i) != "list" && yt_playlistID)
link += "list=" + yt_playlistID + "&";
// Add parameter
link += navID.substring(0, i) + "=" + navID.substring(i+1, navID.length);
return link;
}
else return BASE_URL + (yt_playlistID? "?list=" + yt_playlistID : "");
}
function ct_beforeNav () {
ct_resetContent();
}
function ct_performNav (inNewState) {
//window.scrollTo(0, 0);
document.body.scrollTop = 0;
//container.scrollTop = 0;
//content.scrollTop = 0;
if (!inNewState)
ct_newPageState();
ct_loadContent();
}
/* -------------------- */
/* ---- PAGED CONTENT - */
/* -------------------- */
function ct_registerPagedContent(id, container, loadFunc, trigger, data, showLoader) {
ct_removePagedContent(id);
var pagedContent = {
id: id,
container: container,
autoTrigger: Number.isInteger (trigger)? true : trigger,
triggerDistance: Number.isInteger (trigger)? trigger : undefined,
loadFunc: loadFunc,
loading: false,
index: 0,
data: data,
loader: showLoader
};
ct_pagedContent.push (pagedContent);
return pagedContent;
}
function ct_removePagedContent(id) {
var i;
while ((i = ct_pagedContent.findIndex(p => p.id == id)) >= 0) {
if (ct_pagedContent[i].loading) ct_pagedContent[i].aborted = true;
ct_pagedContent.splice(i, 1);
}
}
function ct_getPagedContent(id) {
return ct_pagedContent.find(p => p.id == id);
}
function ct_checkPagedContent() {
for (var i = 0; i < ct_pagedContent.length; i++) {
var pagedContent = ct_pagedContent[i];
if (pagedContent.loading || !pagedContent.autoTrigger) continue;
var rect = pagedContent.container.getBoundingClientRect();
var viewportHeight = window.innerHeight || document.documentElement.clientHeight;
if (!pagedContent.triggerDistance || rect.bottom - viewportHeight <= pagedContent.triggerDistance)
ct_triggerPagedContent(pagedContent);
}
}
function ct_triggerPagedContent(pagedContent) {
if (!pagedContent) return;
if (pagedContent.aborted)
return ct_removePagedContent(pagedContent.id);
if (pagedContent.loading)
return;
pagedContent.loading = true;
if (pagedContent.loader)
ui_addLoadingIndicator(pagedContent.container);
// Perform content loading
pagedContent.loadFunc(pagedContent.data)
.then(function(hasContinuation){
if (pagedContent.loader)
ui_removeLoadingIndicator(pagedContent.container);
if (pagedContent.aborted || !hasContinuation)
return ct_removePagedContent(pagedContent.id);
// Continue
pagedContent.loading = false;
if (pagedContent.autoTrigger && pagedContent.triggerDistance == undefined)
ct_checkPagedContent();
}).catch (function (error) {
console.error("Paged content failed: ", error);
});
}
/* -------------------- */
/* ---- HOME ---------- */
/* -------------------- */
function ct_loadHome () {
ui_setupHome();
}
/* -------------------- */
/* ---- CACHE --------- */
/* -------------------- */
function ct_navCache () {
ct_beforeNav();
ct_view = "cache";
ct_performNav();
}
function ct_loadCache () {
db_getCachedVideos().then(ui_setupCache);
db_requestPersistence().then(function(persistence) {
if (!persistence) I("cachePersistence").style.display = "";
});
}
function ct_cacheVideo(video) {
if (I(notID) != undefined) return; // Already started
var videoID = video.videoID;
var notID = 'cache-' + videoID;
var abort = false;
ui_setNotification(notID, "Caching " + videoID + "...").notOnClose = function() { abort = true; };
db_cacheStream(video, function(bytesReceived, bytesTotal) {
if (abort) return false;
ui_setNotification(notID, 'Caching ' + videoID + ': ' + ui_shortenBytes(bytesReceived) + '/' + ui_shortenBytes(bytesTotal) + '');
return true;
}).then(function(cache) {
var not = ui_setNotification(notID, 'Caching ' + videoID + ': ' + ui_shortenBytes(cache.size) + ' - ' +
'<button id="seeCacheButton">View Cache</button>', 3000);
not.notContent.children[0].onclick = function () { not.notClose(); ct_navCache(); };
video.cache = cache;
// In case current view is cache, update the view
db_getCachedVideos().then(ui_setupCache);
}).catch(function(e) {
if (!abort) ui_setNotification(notID, 'Caching ' + videoID + ': Error: ' + (e? e.message : "unknown"));
});
}
/* -------------------- */
/* ---- PLAYLIST ------ */
/* -------------------- */
function ct_loadPlaylist (plID) {
if (!plID) plID = yt_playlistID;
if (yt_playlist && plID == yt_playlistID) return;
yt_playlistID = plID;
yt_playlist = undefined;
ui_resetPlaylist();
ui_setupPlaylist();
ct_pagePlaylist = true;
ct_updatePageState();
db_loadPlaylist(plID)
.then(function (playlist) {
if (plID != yt_playlistID) return Promise.resolve(); // Changed while loading
yt_playlist = playlist;
ui_addToPlaylist(0);
ui_setPlaylistFinished();
console.log("YT Playlist:", yt_playlist);
})
.catch(function() {
if (plID != yt_playlistID) return Promise.resolve(); // Changed while loading
ui_setPlaylistSaved(false);
return yt_loadPlaylistData(yt_playlistID, false)
.then(function(playlist) {
if (plID != yt_playlistID) return Promise.resolve(); // Changed while loading
ui_setPlaylistFinished ();
console.log("YT Playlist:", yt_playlist);
});
});
}
function ct_savePlaylist () {
if (!yt_playlist) return;
db_updatePlaylist(yt_playlist)
.then(function() {
ui_setupHome();
ui_setPlaylistSaved(true);
db_requestPersistence();
});
}
function ct_removePlaylist () {
if (!yt_playlist) return;
db_removePlaylist(yt_playlist.listID).then(function () {
ui_setPlaylistSaved (false);
ui_setupHome();
});
}
function ct_updatePlaylist () {
if (yt_playlistID) {
var plID = yt_playlistID;
yt_playlist = undefined;
ui_resetPlaylist();
ui_setupPlaylist();
yt_loadPlaylistData(plID, false)
.then(function(playlist) {
if (plID == yt_playlistID) ui_setPlaylistFinished();
db_updatePlaylist(playlist)
.then(ui_setupHome);
});
}
}
function ct_resetPlaylist () {
ct_newPageState();
ct_pagePlaylist = false;
yt_playlistID = undefined;
yt_playlist = undefined;
ui_resetPlaylist();
ct_updatePageState();
}
function ct_getVideoPlIndex () { // Return -1 on fail so that pos+1 will be 0
return !yt_playlist? -1 : yt_playlist.videos.findIndex(v => v.videoID == yt_videoID);
}
/* -------------------- */
/* ---- SEARCH -------- */
/* -------------------- */
function ct_navSearch(searchTerms, inNewState) {
var plMatch = searchTerms.match(/(PL[a-zA-Z0-9_-]{32})/) || searchTerms.match(/list=([a-zA-Z0-9_-]{20,})(?:&|$)/) || searchTerms.match(/^([A-Z]{2}[a-zA-Z0-9_-]{20,})$/);
var chMatch = searchTerms.match(/(UC[a-zA-Z0-9_-]{22})/);
var cMatch = searchTerms.match(/c\/([a-zA-Z0-9_-]+)/);
var uMatch = searchTerms.match(/user\/([a-zA-Z0-9_-]+)/);
var vdMatch = searchTerms.match(/v=([a-zA-Z0-9_-]{11})/) || searchTerms.match(/youtu.be\/([a-zA-Z0-9_-]{11})/);
if (plMatch) ct_loadPlaylist(plMatch[1]);
if (!plMatch || vdMatch) {
ct_beforeNav();
if (vdMatch) yt_videoID = vdMatch[1];
else if (chMatch) yt_channelID = { channel: chMatch[1] };
else if (uMatch) yt_channelID = { user: uMatch[1] };
else if (cMatch) yt_channelID = { channelName: cMatch[1] };
else yt_searchTerms = searchTerms;
ct_performNav(inNewState);
}
}
function ct_loadSearch() {
yt_loadSearchPage(yt_searchTerms);
ui_setupSearch();
}
function ct_resetSearch () {
ct_removePagedContent("SC");
ui_resetSearch();
yt_searchTerms = undefined;
yt_searchResults = undefined;
}
/* -------------------- */
/* ---- CHANNEL ------- */
/* -------------------- */
function ct_navChannel(channel) {
ct_beforeNav();
yt_channelID = channel;
ct_performNav();
}
function ct_loadChannel() {
ui_addLoadingIndicator(sec_channel, false);
yt_loadChannelData(yt_channelID, false)
// Initiate further control
.then(function() {
ct_online = true;
console.log("YT Channel:", yt_channel);
ct_updatePageState();
ui_removeLoadingIndicator(sec_channel);
ui_setChannelMetadata();
ui_setupChannelTabs();
// Browse tabs need to load first to get continuation data - wait and then update UI
if (yt_channel.uploads.loadingTabs) {
yt_channel.uploads.loadingTabs.forEach(function (tabLoader) {
tabLoader.then(ui_fillChannelTab);
});
}
// Make sure paged content gets loaded if visible
ct_checkPagedContent();
})
// Handle different errors while loading
.catch(function(error) {
ui_removeLoadingIndicator(sec_channel);
if (!error) return; // Silent fail when request has gone stale (new page loaded before this finished)
if (error instanceof NetworkError) {
console.error("Network Error! Could not load Channel Page!");
}
else {
console.error("Error " + error.name + " while loading Channel Page: " + error.message);
}
ui_setChannelError(error);
});
}
function ct_resetChannel () {
ct_removePagedContent("CH");
ui_resetChannelMetadata();
ui_resetChannelUploads();
yt_channelID = undefined;
yt_channel = undefined;
}
/* ------------------------------------------------- */
/* ----- MEDIA ------------------------------------- */
/* ------------------------------------------------- */
function ct_nextVideo() {
var newVideo;
if (yt_playlist) {
var playlist = yt_playlist.videos.filter (v => !v.unavailable);
// Only show cached videos if offline
if (!ct_online) playlist = playlist.filter (v => v.cache != undefined);
// If none cached, still flip through uncache videos
if (playlist.length == 0) playlist = yt_playlist.videos;
// Filter out current video to prevent duplicate playback
var index = playlist.findIndex(v => v.videoID == yt_videoID);
if (playlist.length > 1 && index >= 0)
playlist.splice(index, 1);
// Choose random video
if (playlist.length == 0) index = -1;
else if (ct_pref.playlistRandom) index = Math.floor (Math.random() * playlist.length);
else index = index % playlist.length; // Already removed current
newVideo = index >= 0? playlist[index] : undefined;
}
else if (yt_video && yt_video.related) {
newVideo = yt_video.related.videos[0];
}
if (newVideo) ct_navVideo(newVideo.videoID);
else ui_updatePlayerState();
}
function ct_navVideo(videoID) {
ct_beforeNav();
yt_videoID = videoID;
ct_performNav();
}
function ct_canPlay () {
return !ct_temp.settings;// && document.visibilityState == "visible";
}
function ct_loadMedia () {
var loadingID = yt_videoID;
// Load and display cached data
var cacheLoad = db_getVideo(yt_videoID).then(function (video) {
if (!yt_video || loadingID != yt_videoID) return Promise.reject();
yt_video.cached = true;
yt_video.cache = video.cache;
if (yt_video.meta != undefined) return Promise.resolve();
yt_video.meta = {
title: video.title,
uploader: {
name: video.uploader.name,
channelID: video.uploader.channelID,
},
uploadedDate: video.uploadedDate,
thumbnailURL: video.thumbnailURL,
length: video.length,
views: video.views,
likes: video.likes,
dislikes: video.dislikes,
};
ui_setVideoMetadata();
return Promise.resolve();
}).catch(function() {});
// Load, parse and display online video data
yt_loadVideoData(yt_videoID, false)
// Initiate further control
.then(function() {
ct_online = true;
if (yt_video.unavailable)
throw new PlaybackError(10, "Video is unavailable!", false);
if (yt_video.blocked)
throw new PlaybackError(11, "Video is blocked in your country!", false);
if (yt_video.ageRestricted)
throw new PlaybackError(12, "Video is age restricted!", false);
if (yt_video.status != "OK")
throw new PlaybackError(13, "Playability Status: " + yt_video.status, false);
if (yt_video.streams.length == 0)
throw new ParseError(103, "Failed to parse streams!");
console.log("YT Video:", yt_video);
ct_mediaLoaded();
ct_updatePageState();
ui_setVideoMetadata();
ui_setupMediaSession();
// Related Videos
ui_addRelatedVideos(0);
if (yt_video.related.continuation && ct_isAdvancedCorsHost)
ct_registerPagedContent("RV", I("relatedContainer"), yt_loadMoreRelatedVideos, ct_isDesktop? 100 : false, yt_video.related, true);
// Comments
if (yt_video.comments.continuation && ct_isAdvancedCorsHost && ct_pref.loadComments) {
yt_video.comments.container = I("vdCommentList");
ct_registerPagedContent("CM", I("vdCommentList"), yt_loadMoreComments, 100, yt_video.comments, true);
}
ct_checkPagedContent();
})
// Handle different errors while loading
.catch(function(error) {
if (!error) return; // Silent fail when request has gone stale (new page loaded before this finished)
if (error instanceof NetworkError)
ct_online = false;
cacheLoad.then(function() {
if (yt_video.cache != undefined) {
console.error(error.name + (error.code? " " + error.code : "") + ": " + error.status + " ", error.stack);
console.warn("Error while loading ... Using cache fallback!");
yt_video.streams = [];
ct_mediaLoaded();
ct_updatePageState();
//ui_setVideoMetadata(); // Already done in cacheLoad
ui_setupMediaSession();
} else { // Metadata IS cached
ct_updatePageState();
ui_setVideoMetadata();
ct_mediaError(error);
}
}).catch (function() {
ct_mediaError(error);
});
});
ct_mediaLoad();
}
/* -------------------- */
/* ---- MEDIA STATE --- */
/* -------------------- */
function ct_mediaLoad () {
md_state = State.Loading;
md_paused = !ct_pref.autoplay;
md_flags.buffering = false;
md_flags.seeking = false;
ui_setPoster();
ui_updatePlayerState();
ui_setPlaylistPosition(ct_getVideoPlIndex());
}
function ct_mediaLoaded () {
yt_video.loaded = true;
if (md_state != State.Error) {
yt_video.ready = true;
ui_setStreams();
if (md_paused) md_state = State.PreStart;
else md_state = State.Loading; // Stay in Loading until video actually starts
md_totalTime = yt_video.meta.length;
md_curTime = parseInt(new URL(window.location.href).searchParams.get("t")) || 0;
ui_updateTimelineProgress();
md_updateStreams(); // Fires ct_mediaReady or ct_mediaError eventually
}
}
function ct_mediaReady () {
md_flags.buffering = false;
if (md_paused && md_state == State.Loading) // Means media is ready, but playback was denied
md_state = State.PreStart;
else // Playback start was successful
md_state = State.Started;
ui_updatePlayerState();
}
function ct_mediaError (error) {
clearTimeout(md_timerCheckBuffering);
if (error instanceof PlaybackError && error.tag && error.tag.src.startsWith(VIRT_CACHE)) {
/*
console.error("Cached media file erroneous! Removing from cache. ", error);
md_resetStreams();
db_deleteCachedStream(yt_videoID).then (function () {
if (ct_online) { // Load source
md_updateStreams();
ui_updateStreamState();
} else ct_startAutoplay(8);
});
ui_setNotification("vd-" + yt_videoID, 'Cache of ' + yt_videoID + ' is invalid, removed entry!', 5000);*/
console.error("Cached media file erroneous! Ignoring. ", error);
md_resetStreams();
ui_setNotification("vd-" + yt_videoID, 'Cache of "' + (yt_video && yt_video.meta? yt_video.meta.title : "") + '"' + yt_videoID + ' seems to be invalid!', 5000);
return;
} else if (error instanceof PlaybackError && error.code == 4) {
console.error("Can't play selected stream!");
var stream = yt_video.streams.find(s => s.url == error.tag.src);
if (stream) stream.unavailable = true;
md_updateStreams();
return;
}
if (!(error instanceof ParseError && error.minor))
{ // Reset media state, unless it's a minor parse error
md_resetStreams();
md_state = State.Error;
md_paused = true;
md_flags.buffering = false;
md_flags.seeking = false;