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hardened bluesky app fork with microcosm
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import {IS_WEB} from '#/env'
const {height: SCREEN_HEIGHT} = Dimensions.get('window')
const IFRAME_HOST = IS_WEB ? // @ts-ignore only for web window.location.host === 'localhost:8100' ? 'http://localhost:8100' : 'https://bsky.app' : __DEV__ && !process.env.JEST_WORKER_ID ? 'http://localhost:8100' : 'https://bsky.app'
export const embedPlayerSources = [ 'youtube', 'youtubeShorts', 'twitch', 'spotify', 'soundcloud', 'appleMusic', 'vimeo', 'giphy', 'tenor', 'klipy', 'flickr', 'bandcamp',] as const
export type EmbedPlayerSource = (typeof embedPlayerSources)[number]
export type EmbedPlayerType = | 'youtube_video' | 'youtube_short' | 'twitch_video' | 'spotify_album' | 'spotify_playlist' | 'spotify_song' | 'soundcloud_track' | 'soundcloud_set' | 'apple_music_playlist' | 'apple_music_album' | 'apple_music_song' | 'vimeo_video' | 'giphy_gif' | 'tenor_gif' | 'klipy_gif' | 'flickr_album' | 'bandcamp_album' | 'bandcamp_track'
export const externalEmbedLabels: Record<EmbedPlayerSource, string> = { youtube: 'YouTube', youtubeShorts: 'YouTube Shorts', vimeo: 'Vimeo', twitch: 'Twitch', giphy: 'GIPHY', tenor: 'Tenor', klipy: 'KLIPY', spotify: 'Spotify', appleMusic: 'Apple Music', soundcloud: 'SoundCloud', flickr: 'Flickr', bandcamp: 'Bandcamp',}
/** * These sources are proxied through our CDN and do not leak any user data, * thus are safe to embed without a warning. */export const exemptExternalEmbedSources = new Set<EmbedPlayerSource>([ 'tenor', 'klipy',])
export interface EmbedPlayerParams { type: EmbedPlayerType playerUri: string /** * Web-only ordered list of `<source>` tags for `<video>` playback. When * present, the browser uses `canPlayType` to pick the first one it supports, * which avoids UA sniffing for codec selection. `playerUri` is used as the * native source and as a fallback `<video src>` when this is empty. */ playerSources?: ReadonlyArray<{src: string; type: string}> isGif?: boolean source: EmbedPlayerSource metaUri?: string hideDetails?: boolean dimensions?: { height: number width: number }}
const giphyRegex = /media(?:[0-4]\.giphy\.com|\.giphy\.com)/iconst gifFilenameRegex = /^(\S+)\.(webp|gif|mp4)$/i
export function parseEmbedPlayerFromUrl( url: string,): EmbedPlayerParams | undefined { let urlp try { urlp = new URL(url) } catch (e) { return undefined }
// youtube if (urlp.hostname === 'youtu.be') { const videoId = urlp.pathname.split('/')[1] const t = urlp.searchParams.get('t') ?? '0' const seek = encodeURIComponent(t.replace(/s$/, ''))
if (videoId) { return { type: 'youtube_video', source: 'youtube', playerUri: `${IFRAME_HOST}/iframe/youtube.html?videoId=${videoId}&start=${seek}`, } } } if ( urlp.hostname === 'www.youtube.com' || urlp.hostname === 'youtube.com' || urlp.hostname === 'm.youtube.com' || urlp.hostname === 'music.youtube.com' ) { const [__, page, shortOrLiveVideoId] = urlp.pathname.split('/')
const isShorts = page === 'shorts' const isLive = page === 'live' const videoId = isShorts || isLive ? shortOrLiveVideoId : (urlp.searchParams.get('v') as string) const t = urlp.searchParams.get('t') ?? '0' const seek = encodeURIComponent(t.replace(/s$/, ''))
if (videoId) { return { type: isShorts ? 'youtube_short' : 'youtube_video', source: isShorts ? 'youtubeShorts' : 'youtube', hideDetails: isShorts ? true : undefined, playerUri: `${IFRAME_HOST}/iframe/youtube.html?videoId=${videoId}&start=${seek}`, } } }
// twitch if ( urlp.hostname === 'twitch.tv' || urlp.hostname === 'www.twitch.tv' || urlp.hostname === 'm.twitch.tv' ) { const parent = IS_WEB ? // @ts-ignore only for web window.location.hostname : 'localhost'
const [__, channelOrVideo, clipOrId, id] = urlp.pathname.split('/')
if (channelOrVideo === 'videos') { return { type: 'twitch_video', source: 'twitch', playerUri: `https://player.twitch.tv/?volume=0.5&!muted&autoplay&video=${clipOrId}&parent=${parent}`, } } else if (clipOrId === 'clip') { return { type: 'twitch_video', source: 'twitch', playerUri: `https://clips.twitch.tv/embed?volume=0.5&autoplay=true&clip=${id}&parent=${parent}`, } } else if (channelOrVideo) { return { type: 'twitch_video', source: 'twitch', playerUri: `https://player.twitch.tv/?volume=0.5&!muted&autoplay&channel=${channelOrVideo}&parent=${parent}`, } } }
// spotify if (urlp.hostname === 'open.spotify.com') { const [__, typeOrLocale, idOrType, id] = urlp.pathname.split('/')
if (idOrType) { if (typeOrLocale === 'playlist' || idOrType === 'playlist') { return { type: 'spotify_playlist', source: 'spotify', playerUri: `https://open.spotify.com/embed/playlist/${ id ?? idOrType }`, } } if (typeOrLocale === 'album' || idOrType === 'album') { return { type: 'spotify_album', source: 'spotify', playerUri: `https://open.spotify.com/embed/album/${id ?? idOrType}`, } } if (typeOrLocale === 'track' || idOrType === 'track') { return { type: 'spotify_song', source: 'spotify', playerUri: `https://open.spotify.com/embed/track/${id ?? idOrType}`, } } if (typeOrLocale === 'episode' || idOrType === 'episode') { return { type: 'spotify_song', source: 'spotify', playerUri: `https://open.spotify.com/embed/episode/${id ?? idOrType}`, } } if (typeOrLocale === 'show' || idOrType === 'show') { return { type: 'spotify_song', source: 'spotify', playerUri: `https://open.spotify.com/embed/show/${id ?? idOrType}`, } } } }
// soundcloud if ( urlp.hostname === 'soundcloud.com' || urlp.hostname === 'www.soundcloud.com' ) { const [__, user, trackOrSets, set] = urlp.pathname.split('/')
if (user && trackOrSets) { if (trackOrSets === 'sets' && set) { return { type: 'soundcloud_set', source: 'soundcloud', playerUri: `https://w.soundcloud.com/player/?url=${url}&auto_play=true&visual=false&hide_related=true`, } }
return { type: 'soundcloud_track', source: 'soundcloud', playerUri: `https://w.soundcloud.com/player/?url=${url}&auto_play=true&visual=false&hide_related=true`, } } }
if ( urlp.hostname === 'music.apple.com' || urlp.hostname === 'music.apple.com' ) { // This should always have: locale, type (playlist or album), name, and id. We won't use spread since we want // to check if the length is correct const pathParams = urlp.pathname.split('/') const type = pathParams[2] const songId = urlp.searchParams.get('i')
if ( pathParams.length === 5 && (type === 'playlist' || type === 'album' || type === 'song') ) { // We want to append the songId to the end of the url if it exists const embedUri = `https://embed.music.apple.com${urlp.pathname}${ songId ? `?i=${songId}` : '' }`
if (type === 'playlist') { return { type: 'apple_music_playlist', source: 'appleMusic', playerUri: embedUri, } } else if (type === 'album') { if (songId) { return { type: 'apple_music_song', source: 'appleMusic', playerUri: embedUri, } } else { return { type: 'apple_music_album', source: 'appleMusic', playerUri: embedUri, } } } else if (type === 'song') { return { type: 'apple_music_song', source: 'appleMusic', playerUri: embedUri, } } } }
if (urlp.hostname === 'vimeo.com' || urlp.hostname === 'www.vimeo.com') { const [__, videoId] = urlp.pathname.split('/') if (videoId) { return { type: 'vimeo_video', source: 'vimeo', playerUri: `https://player.vimeo.com/video/${videoId}?autoplay=1`, } } }
if (urlp.hostname === 'giphy.com' || urlp.hostname === 'www.giphy.com') { const [__, gifs, nameAndId] = urlp.pathname.split('/')
/* * nameAndId is a string that consists of the name (dash separated) and the id of the gif (the last part of the name) * We want to get the id of the gif, then direct to media.giphy.com/media/{id}/giphy.webp so we can * use it in an <Image> component */
if (gifs === 'gifs' && nameAndId) { const gifId = nameAndId.split('-').pop()
if (gifId) { return { type: 'giphy_gif', source: 'giphy', isGif: true, hideDetails: true, metaUri: `https://giphy.com/gifs/${gifId}`, playerUri: `https://i.giphy.com/media/${gifId}/200.webp`, } } } }
// There are five possible hostnames that also can be giphy urls: media.giphy.com and media0-4.giphy.com // These can include (presumably) a tracking id in the path name, so we have to check for that as well if (giphyRegex.test(urlp.hostname)) { // We can link directly to the gif, if its a proper link const [__, media, trackingOrId, idOrFilename, filename] = urlp.pathname.split('/')
if (media === 'media') { if (idOrFilename && gifFilenameRegex.test(idOrFilename)) { return { type: 'giphy_gif', source: 'giphy', isGif: true, hideDetails: true, metaUri: `https://giphy.com/gifs/${trackingOrId}`, playerUri: `https://i.giphy.com/media/${trackingOrId}/200.webp`, } } else if (filename && gifFilenameRegex.test(filename)) { return { type: 'giphy_gif', source: 'giphy', isGif: true, hideDetails: true, metaUri: `https://giphy.com/gifs/${idOrFilename}`, playerUri: `https://i.giphy.com/media/${idOrFilename}/200.webp`, } } } }
// Finally, we should see if it is a link to i.giphy.com. These links don't necessarily end in .gif but can also // be .webp if (urlp.hostname === 'i.giphy.com' || urlp.hostname === 'www.i.giphy.com') { const [__, mediaOrFilename, filename] = urlp.pathname.split('/')
if (mediaOrFilename === 'media' && filename) { const gifId = filename.split('.')[0] return { type: 'giphy_gif', source: 'giphy', isGif: true, hideDetails: true, metaUri: `https://giphy.com/gifs/${gifId}`, playerUri: `https://i.giphy.com/media/${gifId}/200.webp`, } } else if (mediaOrFilename) { const gifId = mediaOrFilename.split('.')[0] return { type: 'giphy_gif', source: 'giphy', isGif: true, hideDetails: true, metaUri: `https://giphy.com/gifs/${gifId}`, playerUri: `https://i.giphy.com/media/${ mediaOrFilename.split('.')[0] }/200.webp`, } } }
const tenorGif = parseTenorGif(urlp) if (tenorGif.success) { const {playerUri, playerSources, dimensions} = tenorGif
return { type: 'tenor_gif', source: 'tenor', isGif: true, hideDetails: true, playerUri, playerSources, dimensions, } }
const klipyGif = parseKlipyGif(urlp) if (klipyGif.success) { const {playerUri, playerSources, dimensions} = klipyGif
return { type: 'klipy_gif', source: 'klipy', isGif: true, hideDetails: true, playerUri, playerSources, dimensions, } }
// this is a standard flickr path! we can use the embedder for albums and groups, so validate the path if (urlp.hostname === 'www.flickr.com' || urlp.hostname === 'flickr.com') { let i = urlp.pathname.length - 1 while (i > 0 && urlp.pathname.charAt(i) === '/') { --i }
const path_components = urlp.pathname.slice(1, i + 1).split('/') if (path_components.length === 4) { // discard username - it's not relevant const [photos, __, albums, id] = path_components if (photos === 'photos' && albums === 'albums') { // this at least has the shape of a valid photo-album URL! return { type: 'flickr_album', source: 'flickr', playerUri: `https://embedr.flickr.com/photosets/${id}`, } } }
if (path_components.length === 3) { const [groups, id, pool] = path_components if (groups === 'groups' && pool === 'pool') { return { type: 'flickr_album', source: 'flickr', playerUri: `https://embedr.flickr.com/groups/${id}`, } } } // not an album or a group pool, don't know what to do with this! return undefined }
// link shortened flickr path if (urlp.hostname === 'flic.kr') { const b58alph = '123456789abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ' let [__, type, idBase58Enc] = urlp.pathname.split('/') let id = 0n for (const char of idBase58Enc) { const nextIdx = b58alph.indexOf(char) if (nextIdx >= 0) { id = id * 58n + BigInt(nextIdx) } else { // not b58 encoded, ergo not a valid link to embed return undefined } }
switch (type) { case 'go': const formattedGroupId = `${id}` return { type: 'flickr_album', source: 'flickr', playerUri: `https://embedr.flickr.com/groups/${formattedGroupId.slice( 0, -2, )}@N${formattedGroupId.slice(-2)}`, } case 's': return { type: 'flickr_album', source: 'flickr', playerUri: `https://embedr.flickr.com/photosets/${id}`, } default: // we don't know what this is so we can't embed it return undefined } }
const bandcampRegex = /^[a-z\d][a-z\d-]{2,}[a-z\d]\.bandcamp\.com$/i
if (bandcampRegex.test(urlp.hostname)) { const pathComponents = urlp.pathname.split('/') switch (pathComponents[1]) { case 'album': return { type: 'bandcamp_album', source: 'bandcamp', playerUri: `https://bandcamp.com/EmbeddedPlayer/url=${encodeURIComponent( urlp.href, )}/size=large/bgcol=ffffff/linkcol=0687f5/minimal=true/transparent=true/`, } case 'track': return { type: 'bandcamp_track', source: 'bandcamp', playerUri: `https://bandcamp.com/EmbeddedPlayer/url=${encodeURIComponent( urlp.href, )}/size=large/bgcol=ffffff/linkcol=0687f5/minimal=true/transparent=true/`, } default: return undefined } }}
export function getPlayerAspect({ type, hasThumb, width,}: { type: EmbedPlayerParams['type'] hasThumb: boolean width: number}): {aspectRatio?: number; height?: number} { if (!hasThumb) return {aspectRatio: 16 / 9}
switch (type) { case 'youtube_video': case 'twitch_video': case 'vimeo_video': return {aspectRatio: 16 / 9} case 'youtube_short': if (SCREEN_HEIGHT < 600) { return {aspectRatio: (9 / 16) * 1.75} } else { return {aspectRatio: (9 / 16) * 1.5} } case 'spotify_album': case 'apple_music_album': case 'apple_music_playlist': case 'spotify_playlist': case 'soundcloud_set': return {height: 380} case 'spotify_song': if (width <= 300) { return {height: 155} } return {height: 232} case 'soundcloud_track': return {height: 165} case 'apple_music_song': return {height: 150} case 'bandcamp_album': case 'bandcamp_track': return {aspectRatio: 1} default: return {aspectRatio: 16 / 9} }}
export function getGifDims( originalHeight: number, originalWidth: number, viewWidth: number,) { const scaledHeight = (originalHeight / originalWidth) * viewWidth
return { height: scaledHeight > 250 ? 250 : scaledHeight, width: (250 / scaledHeight) * viewWidth, }}
export function getGiphyMetaUri(url: URL) { if (giphyRegex.test(url.hostname) || url.hostname === 'i.giphy.com') { const params = parseEmbedPlayerFromUrl(url.toString()) if (params && params.type === 'giphy_gif') { return params.metaUri } }}
export function parseTenorGif(urlp: URL): | {success: false} | { success: true playerUri: string playerSources?: ReadonlyArray<{src: string; type: string}> dimensions: {height: number; width: number} } { if (urlp.hostname !== 'media.tenor.com') { return {success: false} }
const [__, id, filename] = urlp.pathname.split('/')
if (!id || !filename) { return {success: false} }
if (!id.includes('AAAAC')) { return {success: false} }
const h = urlp.searchParams.get('hh') const w = urlp.searchParams.get('ww')
if (!h || !w) { return {success: false} }
const dimensions = { height: Number(h), width: Number(w), }
// Validate dimensions are valid positive numbers if ( isNaN(dimensions.height) || isNaN(dimensions.width) || dimensions.height <= 0 || dimensions.width <= 0 ) { return {success: false} }
if (IS_WEB) { // Tenor encodes the format in the ID prefix: AAAP3 = webm, AAAP1 = mp4. // Provide both as <source> tags so the browser picks via canPlayType // instead of relying on user-agent sniffing. const webmUrl = `https://t.gifs.bsky.app/${id.replace('AAAAC', 'AAAP3')}/${filename.replace('.gif', '.webm')}` const mp4Url = `https://t.gifs.bsky.app/${id.replace('AAAAC', 'AAAP1')}/${filename.replace('.gif', '.mp4')}` return { success: true, playerUri: mp4Url, playerSources: [ {src: webmUrl, type: 'video/webm'}, {src: mp4Url, type: 'video/mp4'}, ], dimensions, } }
return { success: true, playerUri: `https://t.gifs.bsky.app/${id.replace('AAAAC', 'AAAAM')}/${filename}`, dimensions, }}
export function isTenorGifUri(url: URL | string) { try { return parseTenorGif(typeof url === 'string' ? new URL(url) : url).success } catch { // Invalid URL return false }}
export function parseKlipyGif(urlp: URL): | {success: false} | { success: true playerUri: string playerSources?: ReadonlyArray<{src: string; type: string}> dimensions: {height: number; width: number} } { if (urlp.hostname !== 'static.klipy.com') { return {success: false} }
if (!urlp.pathname.startsWith('/ii/')) { return {success: false} }
const h = urlp.searchParams.get('hh') const w = urlp.searchParams.get('ww')
if (!h || !w) { return {success: false} }
const dimensions = { height: Number(h), width: Number(w), }
// Validate dimensions are valid positive numbers if ( isNaN(dimensions.height) || isNaN(dimensions.width) || dimensions.height <= 0 || dimensions.width <= 0 ) { return {success: false} }
const webmSlug = urlp.searchParams.get('webm') const mp4Slug = urlp.searchParams.get('mp4')
const playerUrl = new URL(urlp.href) playerUrl.hostname = 'k.gifs.bsky.app'
// Strip all metadata params — only the path matters for the CDN playerUrl.searchParams.delete('hh') playerUrl.searchParams.delete('ww') playerUrl.searchParams.delete('mp4') playerUrl.searchParams.delete('webm')
// On web, swap the gif filename for a video format so the <video> // element can play it. Klipy uses different filename slugs per // format (unlike Tenor's ID-based scheme), so the slugs are // embedded as query params at composition time by resolveGif(). if (IS_WEB) { // Without any slug we can't produce a playable video URL on web, // so fall back to the link card instead of returning a broken player. if (!webmSlug && !mp4Slug) { return {success: false} }
const buildVideoUrl = (slug: string, ext: string) => { const u = new URL(playerUrl.href) const parts = u.pathname.split('/') parts[parts.length - 1] = `${slug}.${ext}` u.pathname = parts.join('/') return u.href }
const sources: {src: string; type: string}[] = [] if (webmSlug) { sources.push({ src: buildVideoUrl(webmSlug, 'webm'), type: 'video/webm', }) } if (mp4Slug) { sources.push({src: buildVideoUrl(mp4Slug, 'mp4'), type: 'video/mp4'}) }
// Prefer mp4 as the fallback `playerUri` for `<video src>` since it has // wider codec support across legacy browsers. const fallback = mp4Slug ? buildVideoUrl(mp4Slug, 'mp4') : buildVideoUrl(webmSlug!, 'webm')
return { success: true, playerUri: fallback, playerSources: sources, dimensions, } }
return { success: true, playerUri: playerUrl.href, dimensions, }}
export function isKlipyGifUri(url: URL | string) { try { return parseKlipyGif(typeof url === 'string' ? new URL(url) : url).success } catch { // Invalid URL return false }}
export function isGifEmbed(url: URL | string) { return isTenorGifUri(url) || isKlipyGifUri(url)}