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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 { CONFIG, EMBED_SIZE, OPENGRAPH_AND_OEMBED_COMMENT, STATIC_MAX_AGE, STATIC_PATHS } from '../initializers' | |
7 | import { asyncMiddleware } from '../middlewares' | |
8 | import { VideoModel } from '../models/video/video' | |
9 | import { VideoPrivacy } from '../../shared/models/videos' | |
10 | ||
11 | const clientsRouter = express.Router() | |
12 | ||
13 | const distPath = join(root(), 'client', 'dist') | |
14 | const assetsImagesPath = join(root(), 'client', 'dist', 'assets', 'images') | |
15 | const embedPath = join(distPath, 'standalone', 'videos', 'embed.html') | |
16 | const indexPath = join(distPath, 'index.html') | |
17 | ||
18 | // Special route that add OpenGraph and oEmbed tags | |
19 | // Do not use a template engine for a so little thing | |
20 | clientsRouter.use('/videos/watch/:id', | |
21 | asyncMiddleware(generateWatchHtmlPage) | |
22 | ) | |
23 | ||
24 | clientsRouter.use('/videos/embed', (req: express.Request, res: express.Response, next: express.NextFunction) => { | |
25 | res.sendFile(embedPath) | |
26 | }) | |
27 | ||
28 | // Static HTML/CSS/JS client files | |
29 | ||
30 | const staticClientFiles = [ | |
31 | 'manifest.json', | |
32 | 'ngsw-worker.js', | |
33 | 'ngsw.json' | |
34 | ] | |
35 | for (const staticClientFile of staticClientFiles) { | |
36 | const path = join(root(), 'client', 'dist', staticClientFile) | |
37 | clientsRouter.use('/' + staticClientFile, express.static(path, { maxAge: STATIC_MAX_AGE })) | |
38 | } | |
39 | ||
40 | clientsRouter.use('/client', express.static(distPath, { maxAge: STATIC_MAX_AGE })) | |
41 | clientsRouter.use('/client/assets/images', express.static(assetsImagesPath, { maxAge: STATIC_MAX_AGE })) | |
42 | ||
43 | // 404 for static files not found | |
44 | clientsRouter.use('/client/*', (req: express.Request, res: express.Response, next: express.NextFunction) => { | |
45 | res.sendStatus(404) | |
46 | }) | |
47 | ||
48 | // --------------------------------------------------------------------------- | |
49 | ||
50 | export { | |
51 | clientsRouter | |
52 | } | |
53 | ||
54 | // --------------------------------------------------------------------------- | |
55 | ||
56 | function addOpenGraphAndOEmbedTags (htmlStringPage: string, video: VideoModel) { | |
57 | const previewUrl = CONFIG.WEBSERVER.URL + STATIC_PATHS.PREVIEWS + video.getPreviewName() | |
58 | const videoUrl = CONFIG.WEBSERVER.URL + '/videos/watch/' + video.uuid | |
59 | ||
60 | const videoNameEscaped = escapeHTML(video.name) | |
61 | const videoDescriptionEscaped = escapeHTML(video.description) | |
62 | const embedUrl = CONFIG.WEBSERVER.URL + video.getEmbedPath() | |
63 | ||
64 | const openGraphMetaTags = { | |
65 | 'og:type': 'video', | |
66 | 'og:title': videoNameEscaped, | |
67 | 'og:image': previewUrl, | |
68 | 'og:url': videoUrl, | |
69 | 'og:description': videoDescriptionEscaped, | |
70 | ||
71 | 'og:video:url': embedUrl, | |
72 | 'og:video:secure_url': embedUrl, | |
73 | 'og:video:type': 'text/html', | |
74 | 'og:video:width': EMBED_SIZE.width, | |
75 | 'og:video:height': EMBED_SIZE.height, | |
76 | ||
77 | 'name': videoNameEscaped, | |
78 | 'description': videoDescriptionEscaped, | |
79 | 'image': previewUrl, | |
80 | ||
81 | 'twitter:card': CONFIG.SERVICES.TWITTER.WHITELISTED ? 'player' : 'summary_large_image', | |
82 | 'twitter:site': CONFIG.SERVICES.TWITTER.USERNAME, | |
83 | 'twitter:title': videoNameEscaped, | |
84 | 'twitter:description': videoDescriptionEscaped, | |
85 | 'twitter:image': previewUrl, | |
86 | 'twitter:player': embedUrl, | |
87 | 'twitter:player:width': EMBED_SIZE.width, | |
88 | 'twitter:player:height': EMBED_SIZE.height | |
89 | } | |
90 | ||
91 | const oembedLinkTags = [ | |
92 | { | |
93 | type: 'application/json+oembed', | |
94 | href: CONFIG.WEBSERVER.URL + '/services/oembed?url=' + encodeURIComponent(videoUrl), | |
95 | title: videoNameEscaped | |
96 | } | |
97 | ] | |
98 | ||
99 | const schemaTags = { | |
100 | '@context': 'http://schema.org', | |
101 | '@type': 'VideoObject', | |
102 | name: videoNameEscaped, | |
103 | description: videoDescriptionEscaped, | |
104 | thumbnailUrl: previewUrl, | |
105 | uploadDate: video.createdAt.toISOString(), | |
106 | duration: video.getActivityStreamDuration(), | |
107 | contentUrl: videoUrl, | |
108 | embedUrl: embedUrl, | |
109 | interactionCount: video.views | |
110 | } | |
111 | ||
112 | let tagsString = '' | |
113 | ||
114 | // Opengraph | |
115 | Object.keys(openGraphMetaTags).forEach(tagName => { | |
116 | const tagValue = openGraphMetaTags[tagName] | |
117 | ||
118 | tagsString += `<meta property="${tagName}" content="${tagValue}" />` | |
119 | }) | |
120 | ||
121 | // OEmbed | |
122 | for (const oembedLinkTag of oembedLinkTags) { | |
123 | tagsString += `<link rel="alternate" type="${oembedLinkTag.type}" href="${oembedLinkTag.href}" title="${oembedLinkTag.title}" />` | |
124 | } | |
125 | ||
126 | // Schema.org | |
127 | tagsString += `<script type="application/ld+json">${JSON.stringify(schemaTags)}</script>` | |
128 | ||
129 | // SEO | |
130 | tagsString += `<link rel="canonical" href="${videoUrl}" />` | |
131 | ||
132 | return htmlStringPage.replace(OPENGRAPH_AND_OEMBED_COMMENT, tagsString) | |
133 | } | |
134 | ||
135 | async function generateWatchHtmlPage (req: express.Request, res: express.Response, next: express.NextFunction) { | |
136 | const videoId = '' + req.params.id | |
137 | let videoPromise: Bluebird<VideoModel> | |
138 | ||
139 | // Let Angular application handle errors | |
140 | if (validator.isUUID(videoId, 4)) { | |
141 | videoPromise = VideoModel.loadByUUIDAndPopulateAccountAndServerAndTags(videoId) | |
142 | } else if (validator.isInt(videoId)) { | |
143 | videoPromise = VideoModel.loadAndPopulateAccountAndServerAndTags(+videoId) | |
144 | } else { | |
145 | return res.sendFile(indexPath) | |
146 | } | |
147 | ||
148 | let [ file, video ] = await Promise.all([ | |
149 | readFileBufferPromise(indexPath), | |
150 | videoPromise | |
151 | ]) | |
152 | ||
153 | const html = file.toString() | |
154 | ||
155 | // Let Angular application handle errors | |
156 | if (!video || video.privacy === VideoPrivacy.PRIVATE) return res.sendFile(indexPath) | |
157 | ||
158 | const htmlStringPageWithTags = addOpenGraphAndOEmbedTags(html, video) | |
159 | res.set('Content-Type', 'text/html; charset=UTF-8').send(htmlStringPageWithTags) | |
160 | } |