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 } 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',
  20   asyncMiddleware(generateWatchHtmlPage)
  21 )
  22
  23 clientsRouter.use('' +
  24   '/videos/embed',
  25   (req: express.Request, res: express.Response, next: express.NextFunction) => {
  26     res.removeHeader('X-Frame-Options')
  27     res.sendFile(embedPath)
  28   }
  29 )
  30 clientsRouter.use('' +
  31   '/videos/test-embed', (req: express.Request, res: express.Response, next: express.NextFunction) => {
  32   res.sendFile(testEmbedPath)
  33 })
  34
  35 // Static HTML/CSS/JS client files
  36
  37 const staticClientFiles = [
  38   'manifest.json',
  39   'ngsw-worker.js',
  40   'ngsw.json'
  41 ]
  42 for (const staticClientFile of staticClientFiles) {
  43   const path = join(root(), 'client', 'dist', staticClientFile)
  44   clientsRouter.use('/' + staticClientFile, express.static(path, { maxAge: STATIC_MAX_AGE }))
  45 }
  46
  47 clientsRouter.use('/client', express.static(distPath, { maxAge: STATIC_MAX_AGE }))
  48 clientsRouter.use('/client/assets/images', express.static(assetsImagesPath, { maxAge: STATIC_MAX_AGE }))
  49
  50 clientsRouter.use('/client/locales/:locale/:file.json', function (req, res) {
  51   const locale = req.params.locale
  52   const file = req.params.file
  53
  54   if (is18nLocale(locale) && LOCALE_FILES.indexOf(file) !== -1) {
  55     const completeLocale = getCompleteLocale(locale)
  56     const completeFileLocale = buildFileLocale(completeLocale)
  57     return res.sendFile(join(__dirname, `../../../client/dist/locale/${file}_${completeFileLocale}.json`))
  58   }
  59
  60   return res.sendStatus(404)
  61 })
  62
  63 // 404 for static files not found
  64 clientsRouter.use('/client/*', (req: express.Request, res: express.Response, next: express.NextFunction) => {
  65   res.sendStatus(404)
  66 })
  67
  68 // Always serve index client page (the client is a single page application, let it handle routing)
  69 // Try to provide the right language index.html
  70 clientsRouter.use('/(:language)?', async function (req, res) {
  71   if (req.accepts(ACCEPT_HEADERS) === 'html') {
  72     try {
  73       await generateHTMLPage(req, res, req.params.language)
  74       return
  75     } catch (err) {
  76       logger.error('Cannot generate HTML page.', err)
  77     }
  78   }
  79
  80   return res.status(404).end()
  81 })
  82
  83 // ---------------------------------------------------------------------------
  84
  85 export {
  86   clientsRouter
  87 }
  88
  89 // ---------------------------------------------------------------------------
  90
  91 async function generateHTMLPage (req: express.Request, res: express.Response, paramLang?: string) {
  92   const html = await ClientHtml.getIndexHTML(req, res)
  93
  94   return sendHTML(html, res)
  95 }
  96
  97 async function generateWatchHtmlPage (req: express.Request, res: express.Response) {
  98   const html = await ClientHtml.getWatchHTMLPage(req.params.id + '', req, res)
  99
 100   return sendHTML(html, res)
 101 }
 102
 103 function sendHTML (html: string, res: express.Response) {
 104   res.set('Content-Type', 'text/html; charset=UTF-8')
 105
 106   return res.send(html)
 107 }