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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,
REMOTE_SCHEME,
STATIC_PATHS,
STATIC_MAX_AGE,
OPENGRAPH_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 tags
// Do not use a template engine for a so little thing
clientsRouter.use('/videos/watch/:id', generateWatchHtmlPage)
clientsRouter.use('/videos/embed', function (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/*', function (req: express.Request, res: express.Response, next: express.NextFunction) {
res.sendStatus(404)
})
// ---------------------------------------------------------------------------
export {
clientsRouter
}
// ---------------------------------------------------------------------------
function addOpenGraphTags (htmlStringPage: string, video: VideoInstance) {
let basePreviewUrlHttp
if (video.isOwned()) {
basePreviewUrlHttp = CONFIG.WEBSERVER.URL
} else {
basePreviewUrlHttp = REMOTE_SCHEME.HTTP + '://' + video.Author.Pod.host
}
// We fetch the remote preview (bigger than the thumbnail)
// This should not overhead the remote server since social websites put in a cache the OpenGraph tags
// We can't use the thumbnail because these social websites want bigger images (> 200x200 for Facebook for example)
const previewUrl = basePreviewUrlHttp + STATIC_PATHS.PREVIEWS + video.getPreviewName()
const videoUrl = CONFIG.WEBSERVER.URL + '/videos/watch/' + video.id
const metaTags = {
'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
}
let tagsString = ''
Object.keys(metaTags).forEach(tagName => {
const tagValue = metaTags[tagName]
tagsString += '<meta property="' + tagName + '" content="' + tagValue + '" />'
})
return htmlStringPage.replace(OPENGRAPH_COMMENT, tagsString)
}
function generateWatchHtmlPage (req: express.Request, res: express.Response, next: express.NextFunction) {
const videoId = '' + req.params.id
let videoPromise: Promise<VideoInstance>
// 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 = addOpenGraphTags(html, video)
res.set('Content-Type', 'text/html; charset=UTF-8').send(htmlStringPageWithTags)
})
.catch(err => next(err))
}
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