aboutsummaryrefslogtreecommitdiffhomepage
path: root/server/controllers/client.ts
blob: 4b37b5fa6ca9a1534127649563273c0eff6b9da9 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
import * as Bluebird from 'bluebird'
import * as express from 'express'
import { join } from 'path'
import * as validator from 'validator'
import { escapeHTML, readFileBufferPromise, root } from '../helpers/core-utils'
import {
  ACCEPT_HEADERS,
  CONFIG,
  EMBED_SIZE,
  OPENGRAPH_AND_OEMBED_COMMENT,
  STATIC_MAX_AGE,
  STATIC_PATHS
} from '../initializers'
import { asyncMiddleware } from '../middlewares'
import { VideoModel } from '../models/video/video'
import { VideoPrivacy } from '../../shared/models/videos'
import { I18N_LOCALES, is18nLocale, getDefaultLocale } from '../../shared/models'

const clientsRouter = express.Router()

const distPath = join(root(), 'client', 'dist')
const assetsImagesPath = join(root(), 'client', 'dist', 'assets', 'images')
const embedPath = join(distPath, 'standalone', 'videos', 'embed.html')

// Special route that add OpenGraph and oEmbed tags
// Do not use a template engine for a so little thing
clientsRouter.use('/videos/watch/:id',
  asyncMiddleware(generateWatchHtmlPage)
)

clientsRouter.use('/videos/embed', (req: express.Request, res: express.Response, next: express.NextFunction) => {
  res.sendFile(embedPath)
})

// Static HTML/CSS/JS client files

const staticClientFiles = [
  'manifest.json',
  'ngsw-worker.js',
  'ngsw.json'
]
for (const staticClientFile of staticClientFiles) {
  const path = join(root(), 'client', 'dist', staticClientFile)
  clientsRouter.use('/' + staticClientFile, express.static(path, { maxAge: STATIC_MAX_AGE }))
}

clientsRouter.use('/client', express.static(distPath, { maxAge: STATIC_MAX_AGE }))
clientsRouter.use('/client/assets/images', express.static(assetsImagesPath, { maxAge: STATIC_MAX_AGE }))

// 404 for static files not found
clientsRouter.use('/client/*', (req: express.Request, res: express.Response, next: express.NextFunction) => {
  res.sendStatus(404)
})

// Always serve index client page (the client is a single page application, let it handle routing)
// Try to provide the right language index.html
clientsRouter.use('/(:language)?', function (req, res) {
  if (req.accepts(ACCEPT_HEADERS) === 'html') {
    return res.sendFile(getIndexPath(req, req.params.language))
  }

  return res.status(404).end()
})

// ---------------------------------------------------------------------------

export {
  clientsRouter
}

// ---------------------------------------------------------------------------

function getIndexPath (req: express.Request, paramLang?: string) {
  let lang: string

  // Check param lang validity
  if (paramLang && is18nLocale(paramLang)) {
    lang = paramLang
  } else {
    // lang = req.acceptsLanguages(Object.keys(I18N_LOCALES)) || getDefaultLocale()
    // Disable auto language for now
    lang = getDefaultLocale()
  }

  return join(__dirname, '../../../client/dist/' + lang + '/index.html')
}

function addOpenGraphAndOEmbedTags (htmlStringPage: string, video: VideoModel) {
  const previewUrl = CONFIG.WEBSERVER.URL + STATIC_PATHS.PREVIEWS + video.getPreviewName()
  const videoUrl = CONFIG.WEBSERVER.URL + '/videos/watch/' + video.uuid

  const videoNameEscaped = escapeHTML(video.name)
  const videoDescriptionEscaped = escapeHTML(video.description)
  const embedUrl = CONFIG.WEBSERVER.URL + video.getEmbedPath()

  const openGraphMetaTags = {
    'og:type': 'video',
    'og:title': videoNameEscaped,
    'og:image': previewUrl,
    'og:url': videoUrl,
    'og:description': videoDescriptionEscaped,

    'og:video:url': embedUrl,
    'og:video:secure_url': embedUrl,
    'og:video:type': 'text/html',
    'og:video:width': EMBED_SIZE.width,
    'og:video:height': EMBED_SIZE.height,

    'name': videoNameEscaped,
    'description': videoDescriptionEscaped,
    'image': previewUrl,

    'twitter:card': CONFIG.SERVICES.TWITTER.WHITELISTED ? 'player' : 'summary_large_image',
    'twitter:site': CONFIG.SERVICES.TWITTER.USERNAME,
    'twitter:title': videoNameEscaped,
    'twitter:description': videoDescriptionEscaped,
    'twitter:image': previewUrl,
    'twitter:player': embedUrl,
    'twitter:player:width': EMBED_SIZE.width,
    'twitter:player:height': EMBED_SIZE.height
  }

  const oembedLinkTags = [
    {
      type: 'application/json+oembed',
      href: CONFIG.WEBSERVER.URL + '/services/oembed?url=' + encodeURIComponent(videoUrl),
      title: videoNameEscaped
    }
  ]

  const schemaTags = {
    '@context': 'http://schema.org',
    '@type': 'VideoObject',
    name: videoNameEscaped,
    description: videoDescriptionEscaped,
    thumbnailUrl: previewUrl,
    uploadDate: video.createdAt.toISOString(),
    duration: video.getActivityStreamDuration(),
    contentUrl: videoUrl,
    embedUrl: embedUrl,
    interactionCount: video.views
  }

  let tagsString = ''

  // Opengraph
  Object.keys(openGraphMetaTags).forEach(tagName => {
    const tagValue = openGraphMetaTags[tagName]

    tagsString += `<meta property="${tagName}" content="${tagValue}" />`
  })

  // OEmbed
  for (const oembedLinkTag of oembedLinkTags) {
    tagsString += `<link rel="alternate" type="${oembedLinkTag.type}" href="${oembedLinkTag.href}" title="${oembedLinkTag.title}" />`
  }

  // Schema.org
  tagsString += `<script type="application/ld+json">${JSON.stringify(schemaTags)}</script>`

  // SEO
  tagsString += `<link rel="canonical" href="${videoUrl}" />`

  return htmlStringPage.replace(OPENGRAPH_AND_OEMBED_COMMENT, tagsString)
}

async function generateWatchHtmlPage (req: express.Request, res: express.Response, next: express.NextFunction) {
  const videoId = '' + req.params.id
  let videoPromise: Bluebird<VideoModel>

  // Let Angular application handle errors
  if (validator.isUUID(videoId, 4)) {
    videoPromise = VideoModel.loadByUUIDAndPopulateAccountAndServerAndTags(videoId)
  } else if (validator.isInt(videoId)) {
    videoPromise = VideoModel.loadAndPopulateAccountAndServerAndTags(+videoId)
  } else {
    return res.sendFile(getIndexPath(req))
  }

  let [ file, video ] = await Promise.all([
    readFileBufferPromise(getIndexPath(req)),
    videoPromise
  ])

  const html = file.toString()

  // Let Angular application handle errors
  if (!video || video.privacy === VideoPrivacy.PRIVATE) return res.sendFile(getIndexPath(req))

  const htmlStringPageWithTags = addOpenGraphAndOEmbedTags(html, video)
  res.set('Content-Type', 'text/html; charset=UTF-8').send(htmlStringPageWithTags)
}