server/controllers/services.ts

   1 import * as express from 'express'
   2 import { EMBED_SIZE, PREVIEWS_SIZE, WEBSERVER, THUMBNAILS_SIZE } from '../initializers/constants'
   3 import { asyncMiddleware, oembedValidator } from '../middlewares'
   4 import { accountNameWithHostGetValidator } from '../middlewares/validators'
   5 import { MChannelSummary } from '@server/types/models'
   6 import { escapeHTML } from '@shared/core-utils/renderer'
   7
   8 const servicesRouter = express.Router()
   9
  10 servicesRouter.use('/oembed',
  11   asyncMiddleware(oembedValidator),
  12   generateOEmbed
  13 )
  14 servicesRouter.use('/redirect/accounts/:accountName',
  15   asyncMiddleware(accountNameWithHostGetValidator),
  16   redirectToAccountUrl
  17 )
  18
  19 // ---------------------------------------------------------------------------
  20
  21 export {
  22   servicesRouter
  23 }
  24
  25 // ---------------------------------------------------------------------------
  26
  27 function generateOEmbed (req: express.Request, res: express.Response) {
  28   if (res.locals.videoAll) return generateVideoOEmbed(req, res)
  29
  30   return generatePlaylistOEmbed(req, res)
  31 }
  32
  33 function generatePlaylistOEmbed (req: express.Request, res: express.Response) {
  34   const playlist = res.locals.videoPlaylistSummary
  35
  36   const json = buildOEmbed({
  37     channel: playlist.VideoChannel,
  38     title: playlist.name,
  39     embedPath: playlist.getEmbedStaticPath(),
  40     previewPath: playlist.getThumbnailStaticPath(),
  41     previewSize: THUMBNAILS_SIZE,
  42     req
  43   })
  44
  45   return res.json(json)
  46 }
  47
  48 function generateVideoOEmbed (req: express.Request, res: express.Response) {
  49   const video = res.locals.videoAll
  50
  51   const json = buildOEmbed({
  52     channel: video.VideoChannel,
  53     title: video.name,
  54     embedPath: video.getEmbedStaticPath(),
  55     previewPath: video.getPreviewStaticPath(),
  56     previewSize: PREVIEWS_SIZE,
  57     req
  58   })
  59
  60   return res.json(json)
  61 }
  62
  63 function buildOEmbed (options: {
  64   req: express.Request
  65   title: string
  66   channel: MChannelSummary
  67   previewPath: string | null
  68   embedPath: string
  69   previewSize: {
  70     height: number
  71     width: number
  72   }
  73 }) {
  74   const { req, previewSize, previewPath, title, channel, embedPath } = options
  75
  76   const webserverUrl = WEBSERVER.URL
  77   const maxHeight = parseInt(req.query.maxheight, 10)
  78   const maxWidth = parseInt(req.query.maxwidth, 10)
  79
  80   const embedUrl = webserverUrl + embedPath
  81   let embedWidth = EMBED_SIZE.width
  82   let embedHeight = EMBED_SIZE.height
  83   const embedTitle = escapeHTML(title)
  84
  85   let thumbnailUrl = previewPath
  86     ? webserverUrl + previewPath
  87     : undefined
  88
  89   if (maxHeight < embedHeight) embedHeight = maxHeight
  90   if (maxWidth < embedWidth) embedWidth = maxWidth
  91
  92   // Our thumbnail is too big for the consumer
  93   if (
  94     (maxHeight !== undefined && maxHeight < previewSize.height) ||
  95     (maxWidth !== undefined && maxWidth < previewSize.width)
  96   ) {
  97     thumbnailUrl = undefined
  98   }
  99
 100   const html = `<iframe width="${embedWidth}" height="${embedHeight}" sandbox="allow-same-origin allow-scripts" ` +
 101     `title="${embedTitle}" src="${embedUrl}" frameborder="0" allowfullscreen></iframe>`
 102
 103   const json: any = {
 104     type: 'video',
 105     version: '1.0',
 106     html,
 107     width: embedWidth,
 108     height: embedHeight,
 109     title: title,
 110     author_name: channel.name,
 111     author_url: channel.Actor.url,
 112     provider_name: 'PeerTube',
 113     provider_url: webserverUrl
 114   }
 115
 116   if (thumbnailUrl !== undefined) {
 117     json.thumbnail_url = thumbnailUrl
 118     json.thumbnail_width = previewSize.width
 119     json.thumbnail_height = previewSize.height
 120   }
 121
 122   return json
 123 }
 124
 125 function redirectToAccountUrl (req: express.Request, res: express.Response, next: express.NextFunction) {
 126   return res.redirect(res.locals.account.Actor.url)
 127 }