server/controllers/client.ts

   1 import * as express from 'express'
   2 import { join } from 'path'
   3 import { root } from '../helpers/core-utils'
   4 import { ACCEPT_HEADERS, STATIC_MAX_AGE } from '../initializers'
   5 import { asyncMiddleware, embedCSP } from '../middlewares'
   6 import { buildFileLocale, getCompleteLocale, is18nLocale, LOCALE_FILES } from '../../shared/models/i18n/i18n'
   7 import { ClientHtml } from '../lib/client-html'
   8 import { logger } from '../helpers/logger'
   9
  10 const clientsRouter = express.Router()
  11
  12 const distPath = join(root(), 'client', 'dist')
  13 const assetsImagesPath = join(root(), 'client', 'dist', 'assets', 'images')
  14 const embedPath = join(distPath, 'standalone', 'videos', 'embed.html')
  15 const testEmbedPath = join(distPath, 'standalone', 'videos', 'test-embed.html')
  16
  17 // Special route that add OpenGraph and oEmbed tags
  18 // Do not use a template engine for a so little thing
  19 clientsRouter.use('/videos/watch/:id', asyncMiddleware(generateWatchHtmlPage))
  20
  21 clientsRouter.use(
  22   '/videos/embed',
  23   embedCSP,
  24   (req: express.Request, res: express.Response) => {
  25     res.removeHeader('X-Frame-Options')
  26     res.sendFile(embedPath)
  27   }
  28 )
  29 clientsRouter.use(
  30   '/videos/test-embed',
  31   (req: express.Request, res: express.Response) => res.sendFile(testEmbedPath)
  32 )
  33
  34 // Static HTML/CSS/JS client files
  35
  36 const staticClientFiles = [
  37   'manifest.webmanifest',
  38   'ngsw-worker.js',
  39   'ngsw.json'
  40 ]
  41 for (const staticClientFile of staticClientFiles) {
  42   const path = join(root(), 'client', 'dist', staticClientFile)
  43   clientsRouter.use('/' + staticClientFile, express.static(path, { maxAge: STATIC_MAX_AGE }))
  44 }
  45
  46 clientsRouter.use('/client', express.static(distPath, { maxAge: STATIC_MAX_AGE }))
  47 clientsRouter.use('/client/assets/images', express.static(assetsImagesPath, { maxAge: STATIC_MAX_AGE }))
  48
  49 clientsRouter.use('/client/locales/:locale/:file.json', function (req, res) {
  50   const locale = req.params.locale
  51   const file = req.params.file
  52
  53   if (is18nLocale(locale) && LOCALE_FILES.indexOf(file) !== -1) {
  54     const completeLocale = getCompleteLocale(locale)
  55     const completeFileLocale = buildFileLocale(completeLocale)
  56     return res.sendFile(join(__dirname, `../../../client/dist/locale/${file}_${completeFileLocale}.json`))
  57   }
  58
  59   return res.sendStatus(404)
  60 })
  61
  62 // 404 for static files not found
  63 clientsRouter.use('/client/*', (req: express.Request, res: express.Response, next: express.NextFunction) => {
  64   res.sendStatus(404)
  65 })
  66
  67 // Always serve index client page (the client is a single page application, let it handle routing)
  68 // Try to provide the right language index.html
  69 clientsRouter.use('/(:language)?', async function (req, res) {
  70   if (req.accepts(ACCEPT_HEADERS) === 'html') {
  71     try {
  72       await generateHTMLPage(req, res, req.params.language)
  73       return
  74     } catch (err) {
  75       logger.error('Cannot generate HTML page.', err)
  76     }
  77   }
  78
  79   return res.status(404).end()
  80 })
  81
  82 // ---------------------------------------------------------------------------
  83
  84 export {
  85   clientsRouter
  86 }
  87
  88 // ---------------------------------------------------------------------------
  89
  90 async function generateHTMLPage (req: express.Request, res: express.Response, paramLang?: string) {
  91   const html = await ClientHtml.getDefaultHTMLPage(req, res, paramLang)
  92
  93   return sendHTML(html, res)
  94 }
  95
  96 async function generateWatchHtmlPage (req: express.Request, res: express.Response) {
  97   const html = await ClientHtml.getWatchHTMLPage(req.params.id + '', req, res)
  98
  99   return sendHTML(html, res)
 100 }
 101
 102 function sendHTML (html: string, res: express.Response) {
 103   res.set('Content-Type', 'text/html; charset=UTF-8')
 104
 105   return res.send(html)
 106 }