import * as Bluebird from 'bluebird' import * as express from 'express' import { join } from 'path' import * as validator from 'validator' import { escapeHTML, readFileBufferPromise, root } from '../helpers/core-utils' import { ACCEPT_HEADERS, CONFIG, EMBED_SIZE, OPENGRAPH_AND_OEMBED_COMMENT, STATIC_MAX_AGE, STATIC_PATHS } from '../initializers' import { asyncMiddleware } from '../middlewares' import { VideoModel } from '../models/video/video' import { VideoPrivacy } from '../../shared/models/videos' import { I18N_LOCALES, is18nLocale, getDefaultLocale } from '../../shared/models' const clientsRouter = express.Router() const distPath = join(root(), 'client', 'dist') const assetsImagesPath = join(root(), 'client', 'dist', 'assets', 'images') const embedPath = join(distPath, 'standalone', 'videos', 'embed.html') // Special route that add OpenGraph and oEmbed tags // Do not use a template engine for a so little thing clientsRouter.use('/videos/watch/:id', asyncMiddleware(generateWatchHtmlPage) ) clientsRouter.use('/videos/embed', (req: express.Request, res: express.Response, next: express.NextFunction) => { res.sendFile(embedPath) }) // Static HTML/CSS/JS client files const staticClientFiles = [ 'manifest.json', 'ngsw-worker.js', 'ngsw.json' ] for (const staticClientFile of staticClientFiles) { const path = join(root(), 'client', 'dist', staticClientFile) clientsRouter.use('/' + staticClientFile, express.static(path, { maxAge: STATIC_MAX_AGE })) } clientsRouter.use('/client', express.static(distPath, { maxAge: STATIC_MAX_AGE })) clientsRouter.use('/client/assets/images', express.static(assetsImagesPath, { maxAge: STATIC_MAX_AGE })) // 404 for static files not found clientsRouter.use('/client/*', (req: express.Request, res: express.Response, next: express.NextFunction) => { res.sendStatus(404) }) // Always serve index client page (the client is a single page application, let it handle routing) // Try to provide the right language index.html clientsRouter.use('/(:language)?', function (req, res) { if (req.accepts(ACCEPT_HEADERS) === 'html') { return res.sendFile(getIndexPath(req, req.params.language)) } return res.status(404).end() }) // --------------------------------------------------------------------------- export { clientsRouter } // --------------------------------------------------------------------------- function getIndexPath (req: express.Request, paramLang?: string) { let lang: string // Check param lang validity if (paramLang && is18nLocale(paramLang)) { lang = paramLang } else { // lang = req.acceptsLanguages(Object.keys(I18N_LOCALES)) || getDefaultLocale() // Disable auto language for now lang = getDefaultLocale() } return join(__dirname, '../../../client/dist/' + lang + '/index.html') } function addOpenGraphAndOEmbedTags (htmlStringPage: string, video: VideoModel) { const previewUrl = CONFIG.WEBSERVER.URL + STATIC_PATHS.PREVIEWS + video.getPreviewName() const videoUrl = CONFIG.WEBSERVER.URL + '/videos/watch/' + video.uuid const videoNameEscaped = escapeHTML(video.name) const videoDescriptionEscaped = escapeHTML(video.description) const embedUrl = CONFIG.WEBSERVER.URL + video.getEmbedPath() const openGraphMetaTags = { 'og:type': 'video', 'og:title': videoNameEscaped, 'og:image': previewUrl, 'og:url': videoUrl, 'og:description': videoDescriptionEscaped, 'og:video:url': embedUrl, 'og:video:secure_url': embedUrl, 'og:video:type': 'text/html', 'og:video:width': EMBED_SIZE.width, 'og:video:height': EMBED_SIZE.height, 'name': videoNameEscaped, 'description': videoDescriptionEscaped, 'image': previewUrl, 'twitter:card': CONFIG.SERVICES.TWITTER.WHITELISTED ? 'player' : 'summary_large_image', 'twitter:site': CONFIG.SERVICES.TWITTER.USERNAME, 'twitter:title': videoNameEscaped, 'twitter:description': videoDescriptionEscaped, 'twitter:image': previewUrl, 'twitter:player': embedUrl, 'twitter:player:width': EMBED_SIZE.width, 'twitter:player:height': EMBED_SIZE.height } const oembedLinkTags = [ { type: 'application/json+oembed', href: CONFIG.WEBSERVER.URL + '/services/oembed?url=' + encodeURIComponent(videoUrl), title: videoNameEscaped } ] const schemaTags = { '@context': 'http://schema.org', '@type': 'VideoObject', name: videoNameEscaped, description: videoDescriptionEscaped, thumbnailUrl: previewUrl, uploadDate: video.createdAt.toISOString(), duration: video.getActivityStreamDuration(), contentUrl: videoUrl, embedUrl: embedUrl, interactionCount: video.views } let tagsString = '' // Opengraph Object.keys(openGraphMetaTags).forEach(tagName => { const tagValue = openGraphMetaTags[tagName] tagsString += `` }) // OEmbed for (const oembedLinkTag of oembedLinkTags) { tagsString += `` } // Schema.org tagsString += `` // SEO tagsString += `` return htmlStringPage.replace(OPENGRAPH_AND_OEMBED_COMMENT, tagsString) } async function generateWatchHtmlPage (req: express.Request, res: express.Response, next: express.NextFunction) { const videoId = '' + req.params.id let videoPromise: Bluebird // Let Angular application handle errors if (validator.isUUID(videoId, 4)) { videoPromise = VideoModel.loadByUUIDAndPopulateAccountAndServerAndTags(videoId) } else if (validator.isInt(videoId)) { videoPromise = VideoModel.loadAndPopulateAccountAndServerAndTags(+videoId) } else { return res.sendFile(getIndexPath(req)) } let [ file, video ] = await Promise.all([ readFileBufferPromise(getIndexPath(req)), videoPromise ]) const html = file.toString() // Let Angular application handle errors if (!video || video.privacy === VideoPrivacy.PRIVATE) return res.sendFile(getIndexPath(req)) const htmlStringPageWithTags = addOpenGraphAndOEmbedTags(html, video) res.set('Content-Type', 'text/html; charset=UTF-8').send(htmlStringPageWithTags) }