133 lines
4.1 KiB
TypeScript
133 lines
4.1 KiB
TypeScript
import * as express from 'express'
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import { join } from 'path'
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import * as validator from 'validator'
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import * as Bluebird from 'bluebird'
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import { database as db } from '../initializers/database'
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import {
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CONFIG,
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STATIC_PATHS,
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STATIC_MAX_AGE,
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OPENGRAPH_AND_OEMBED_COMMENT,
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EMBED_SIZE
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} from '../initializers'
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import { root, readFileBufferPromise, escapeHTML } from '../helpers'
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import { asyncMiddleware } from '../middlewares'
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import { VideoInstance } from '../models'
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const clientsRouter = express.Router()
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const distPath = join(root(), 'client', 'dist')
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const embedPath = join(distPath, 'standalone', 'videos', 'embed.html')
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const indexPath = join(distPath, 'index.html')
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// Special route that add OpenGraph and oEmbed tags
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// Do not use a template engine for a so little thing
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clientsRouter.use('/videos/watch/:id',
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asyncMiddleware(generateWatchHtmlPage)
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)
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clientsRouter.use('/videos/embed', (req: express.Request, res: express.Response, next: express.NextFunction) => {
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res.sendFile(embedPath)
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})
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// Static HTML/CSS/JS client files
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clientsRouter.use('/client', express.static(distPath, { maxAge: STATIC_MAX_AGE }))
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// 404 for static files not found
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clientsRouter.use('/client/*', (req: express.Request, res: express.Response, next: express.NextFunction) => {
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res.sendStatus(404)
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})
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// ---------------------------------------------------------------------------
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export {
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clientsRouter
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}
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// ---------------------------------------------------------------------------
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function addOpenGraphAndOEmbedTags (htmlStringPage: string, video: VideoInstance) {
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const previewUrl = CONFIG.WEBSERVER.URL + STATIC_PATHS.PREVIEWS + video.getPreviewName()
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const videoUrl = CONFIG.WEBSERVER.URL + '/videos/watch/' + video.uuid
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const videoName = escapeHTML(video.name)
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const videoDescription = escapeHTML(video.description)
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const embedUrl = CONFIG.WEBSERVER.URL + video.getEmbedPath()
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const openGraphMetaTags = {
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'og:type': 'video',
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'og:title': videoName,
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'og:image': previewUrl,
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'og:url': videoUrl,
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'og:description': videoDescription,
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'og:video:url': embedUrl,
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'og:video:secure_url': embedUrl,
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'og:video:type': 'text/html',
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'og:video:width': EMBED_SIZE.width,
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'og:video:height': EMBED_SIZE.height,
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'name': videoName,
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'description': videoDescription,
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'image': previewUrl,
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'twitter:card': 'summary_large_image',
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'twitter:site': '@Chocobozzz',
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'twitter:title': videoName,
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'twitter:description': videoDescription,
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'twitter:image': previewUrl,
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'twitter:player': embedUrl,
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'twitter:player:width': EMBED_SIZE.width,
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'twitter:player:height': EMBED_SIZE.height
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}
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const oembedLinkTags = [
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{
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type: 'application/json+oembed',
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href: CONFIG.WEBSERVER.URL + '/services/oembed?url=' + encodeURIComponent(videoUrl),
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title: videoName
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}
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]
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let tagsString = ''
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Object.keys(openGraphMetaTags).forEach(tagName => {
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const tagValue = openGraphMetaTags[tagName]
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tagsString += `<meta property="${tagName}" content="${tagValue}" />`
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})
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for (const oembedLinkTag of oembedLinkTags) {
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tagsString += `<link rel="alternate" type="${oembedLinkTag.type}" href="${oembedLinkTag.href}" title="${oembedLinkTag.title}" />`
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}
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return htmlStringPage.replace(OPENGRAPH_AND_OEMBED_COMMENT, tagsString)
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}
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async function generateWatchHtmlPage (req: express.Request, res: express.Response, next: express.NextFunction) {
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const videoId = '' + req.params.id
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let videoPromise: Bluebird<VideoInstance>
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// Let Angular application handle errors
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if (validator.isUUID(videoId, 4)) {
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videoPromise = db.Video.loadByUUIDAndPopulateAccountAndServerAndTags(videoId)
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} else if (validator.isInt(videoId)) {
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videoPromise = db.Video.loadAndPopulateAccountAndServerAndTags(+videoId)
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} else {
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return res.sendFile(indexPath)
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}
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let [ file, video ] = await Promise.all([
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readFileBufferPromise(indexPath),
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videoPromise
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])
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const html = file.toString()
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// Let Angular application handle errors
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if (!video) return res.sendFile(indexPath)
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const htmlStringPageWithTags = addOpenGraphAndOEmbedTags(html, video)
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res.set('Content-Type', 'text/html; charset=UTF-8').send(htmlStringPageWithTags)
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}
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