import * as express from 'express' import { join } from 'path' import * as validator from 'validator' import * as Promise from 'bluebird' import { database as db } from '../initializers/database' import { CONFIG, STATIC_PATHS, STATIC_MAX_AGE, OPENGRAPH_AND_OEMBED_COMMENT } from '../initializers' import { root, readFileBufferPromise } from '../helpers' import { VideoInstance } from '../models' const clientsRouter = express.Router() const distPath = join(root(), 'client', 'dist') const embedPath = join(distPath, 'standalone', 'videos', 'embed.html') const indexPath = join(distPath, 'index.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', generateWatchHtmlPage) clientsRouter.use('/videos/embed', (req: express.Request, res: express.Response, next: express.NextFunction) => { res.sendFile(embedPath) }) // Static HTML/CSS/JS client files clientsRouter.use('/client', express.static(distPath, { 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) }) // --------------------------------------------------------------------------- export { clientsRouter } // --------------------------------------------------------------------------- function addOpenGraphAndOEmbedTags (htmlStringPage: string, video: VideoInstance) { const previewUrl = CONFIG.WEBSERVER.URL + STATIC_PATHS.PREVIEWS + video.getPreviewName() const videoUrl = CONFIG.WEBSERVER.URL + '/videos/watch/' + video.uuid const openGraphMetaTags = { 'og:type': 'video', 'og:title': video.name, 'og:image': previewUrl, 'og:url': videoUrl, 'og:description': video.description, 'name': video.name, 'description': video.description, 'image': previewUrl, 'twitter:card': 'summary_large_image', 'twitter:site': '@Chocobozzz', 'twitter:title': video.name, 'twitter:description': video.description, 'twitter:image': previewUrl } const oembedLinkTags = [ { type: 'application/json+oembed', href: CONFIG.WEBSERVER.URL + '/services/oembed?url=' + encodeURIComponent(videoUrl), title: video.name } ] let tagsString = '' Object.keys(openGraphMetaTags).forEach(tagName => { const tagValue = openGraphMetaTags[tagName] tagsString += `` }) for (const oembedLinkTag of oembedLinkTags) { tagsString += `` } return htmlStringPage.replace(OPENGRAPH_AND_OEMBED_COMMENT, tagsString) } function generateWatchHtmlPage (req: express.Request, res: express.Response, next: express.NextFunction) { const videoId = '' + req.params.id let videoPromise: Promise // Let Angular application handle errors if (validator.isUUID(videoId, 4)) { videoPromise = db.Video.loadByUUIDAndPopulateAuthorAndPodAndTags(videoId) } else if (validator.isInt(videoId)) { videoPromise = db.Video.loadAndPopulateAuthorAndPodAndTags(+videoId) } else { return res.sendFile(indexPath) } Promise.all([ readFileBufferPromise(indexPath), videoPromise ]) .then(([ file, video ]) => { file = file as Buffer video = video as VideoInstance const html = file.toString() // Let Angular application handle errors if (!video) return res.sendFile(indexPath) const htmlStringPageWithTags = addOpenGraphAndOEmbedTags(html, video) res.set('Content-Type', 'text/html; charset=UTF-8').send(htmlStringPageWithTags) }) .catch(err => next(err)) }