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1 | import * as Bluebird from 'bluebird' | |
2 | import * as express from 'express' | |
3 | import { join } from 'path' | |
4 | import * as validator from 'validator' | |
5 | import { escapeHTML, readFileBufferPromise, root } from '../helpers/core-utils' | |
6 | import { | |
7 | ACCEPT_HEADERS, | |
8 | CONFIG, | |
9 | EMBED_SIZE, | |
10 | OPENGRAPH_AND_OEMBED_COMMENT, | |
11 | STATIC_MAX_AGE, | |
12 | STATIC_PATHS | |
13 | } from '../initializers' | |
14 | import { asyncMiddleware } from '../middlewares' | |
15 | import { VideoModel } from '../models/video/video' | |
16 | import { VideoPrivacy } from '../../shared/models/videos' | |
17 | import { I18N_LOCALES, is18nLocale, getDefaultLocale } from '../../shared/models' | |
18 | ||
19 | const clientsRouter = express.Router() | |
20 | ||
21 | const distPath = join(root(), 'client', 'dist') | |
22 | const assetsImagesPath = join(root(), 'client', 'dist', 'assets', 'images') | |
23 | const embedPath = join(distPath, 'standalone', 'videos', 'embed.html') | |
24 | ||
25 | // Special route that add OpenGraph and oEmbed tags | |
26 | // Do not use a template engine for a so little thing | |
27 | clientsRouter.use('/videos/watch/:id', | |
28 | asyncMiddleware(generateWatchHtmlPage) | |
29 | ) | |
30 | ||
31 | clientsRouter.use('/videos/embed', (req: express.Request, res: express.Response, next: express.NextFunction) => { | |
32 | res.sendFile(embedPath) | |
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 | // 404 for static files not found | |
51 | clientsRouter.use('/client/*', (req: express.Request, res: express.Response, next: express.NextFunction) => { | |
52 | res.sendStatus(404) | |
53 | }) | |
54 | ||
55 | // Always serve index client page (the client is a single page application, let it handle routing) | |
56 | // Try to provide the right language index.html | |
57 | clientsRouter.use('/(:language)?', function (req, res) { | |
58 | if (req.accepts(ACCEPT_HEADERS) === 'html') { | |
59 | return res.sendFile(getIndexPath(req, req.params.language)) | |
60 | } | |
61 | ||
62 | return res.status(404).end() | |
63 | }) | |
64 | ||
65 | // --------------------------------------------------------------------------- | |
66 | ||
67 | export { | |
68 | clientsRouter | |
69 | } | |
70 | ||
71 | // --------------------------------------------------------------------------- | |
72 | ||
73 | function getIndexPath (req: express.Request, paramLang?: string) { | |
74 | let lang: string | |
75 | ||
76 | // Check param lang validity | |
77 | if (paramLang && is18nLocale(paramLang)) { | |
78 | lang = paramLang | |
79 | } else { | |
80 | // lang = req.acceptsLanguages(Object.keys(I18N_LOCALES)) || getDefaultLocale() | |
81 | // Disable auto language for now | |
82 | lang = getDefaultLocale() | |
83 | } | |
84 | ||
85 | return join(__dirname, '../../../client/dist/' + lang + '/index.html') | |
86 | } | |
87 | ||
88 | function addOpenGraphAndOEmbedTags (htmlStringPage: string, video: VideoModel) { | |
89 | const previewUrl = CONFIG.WEBSERVER.URL + STATIC_PATHS.PREVIEWS + video.getPreviewName() | |
90 | const videoUrl = CONFIG.WEBSERVER.URL + '/videos/watch/' + video.uuid | |
91 | ||
92 | const videoNameEscaped = escapeHTML(video.name) | |
93 | const videoDescriptionEscaped = escapeHTML(video.description) | |
94 | const embedUrl = CONFIG.WEBSERVER.URL + video.getEmbedPath() | |
95 | ||
96 | const openGraphMetaTags = { | |
97 | 'og:type': 'video', | |
98 | 'og:title': videoNameEscaped, | |
99 | 'og:image': previewUrl, | |
100 | 'og:url': videoUrl, | |
101 | 'og:description': videoDescriptionEscaped, | |
102 | ||
103 | 'og:video:url': embedUrl, | |
104 | 'og:video:secure_url': embedUrl, | |
105 | 'og:video:type': 'text/html', | |
106 | 'og:video:width': EMBED_SIZE.width, | |
107 | 'og:video:height': EMBED_SIZE.height, | |
108 | ||
109 | 'name': videoNameEscaped, | |
110 | 'description': videoDescriptionEscaped, | |
111 | 'image': previewUrl, | |
112 | ||
113 | 'twitter:card': CONFIG.SERVICES.TWITTER.WHITELISTED ? 'player' : 'summary_large_image', | |
114 | 'twitter:site': CONFIG.SERVICES.TWITTER.USERNAME, | |
115 | 'twitter:title': videoNameEscaped, | |
116 | 'twitter:description': videoDescriptionEscaped, | |
117 | 'twitter:image': previewUrl, | |
118 | 'twitter:player': embedUrl, | |
119 | 'twitter:player:width': EMBED_SIZE.width, | |
120 | 'twitter:player:height': EMBED_SIZE.height | |
121 | } | |
122 | ||
123 | const oembedLinkTags = [ | |
124 | { | |
125 | type: 'application/json+oembed', | |
126 | href: CONFIG.WEBSERVER.URL + '/services/oembed?url=' + encodeURIComponent(videoUrl), | |
127 | title: videoNameEscaped | |
128 | } | |
129 | ] | |
130 | ||
131 | const schemaTags = { | |
132 | '@context': 'http://schema.org', | |
133 | '@type': 'VideoObject', | |
134 | name: videoNameEscaped, | |
135 | description: videoDescriptionEscaped, | |
136 | thumbnailUrl: previewUrl, | |
137 | uploadDate: video.createdAt.toISOString(), | |
138 | duration: video.getActivityStreamDuration(), | |
139 | contentUrl: videoUrl, | |
140 | embedUrl: embedUrl, | |
141 | interactionCount: video.views | |
142 | } | |
143 | ||
144 | let tagsString = '' | |
145 | ||
146 | // Opengraph | |
147 | Object.keys(openGraphMetaTags).forEach(tagName => { | |
148 | const tagValue = openGraphMetaTags[tagName] | |
149 | ||
150 | tagsString += `<meta property="${tagName}" content="${tagValue}" />` | |
151 | }) | |
152 | ||
153 | // OEmbed | |
154 | for (const oembedLinkTag of oembedLinkTags) { | |
155 | tagsString += `<link rel="alternate" type="${oembedLinkTag.type}" href="${oembedLinkTag.href}" title="${oembedLinkTag.title}" />` | |
156 | } | |
157 | ||
158 | // Schema.org | |
159 | tagsString += `<script type="application/ld+json">${JSON.stringify(schemaTags)}</script>` | |
160 | ||
161 | // SEO | |
162 | tagsString += `<link rel="canonical" href="${videoUrl}" />` | |
163 | ||
164 | return htmlStringPage.replace(OPENGRAPH_AND_OEMBED_COMMENT, tagsString) | |
165 | } | |
166 | ||
167 | async function generateWatchHtmlPage (req: express.Request, res: express.Response, next: express.NextFunction) { | |
168 | const videoId = '' + req.params.id | |
169 | let videoPromise: Bluebird<VideoModel> | |
170 | ||
171 | // Let Angular application handle errors | |
172 | if (validator.isUUID(videoId, 4)) { | |
173 | videoPromise = VideoModel.loadByUUIDAndPopulateAccountAndServerAndTags(videoId) | |
174 | } else if (validator.isInt(videoId)) { | |
175 | videoPromise = VideoModel.loadAndPopulateAccountAndServerAndTags(+videoId) | |
176 | } else { | |
177 | return res.sendFile(getIndexPath(req)) | |
178 | } | |
179 | ||
180 | let [ file, video ] = await Promise.all([ | |
181 | readFileBufferPromise(getIndexPath(req)), | |
182 | videoPromise | |
183 | ]) | |
184 | ||
185 | const html = file.toString() | |
186 | ||
187 | // Let Angular application handle errors | |
188 | if (!video || video.privacy === VideoPrivacy.PRIVATE) return res.sendFile(getIndexPath(req)) | |
189 | ||
190 | const htmlStringPageWithTags = addOpenGraphAndOEmbedTags(html, video) | |
191 | res.set('Content-Type', 'text/html; charset=UTF-8').send(htmlStringPageWithTags) | |
192 | } |