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1 | import * as express from 'express' | |
2 | import { join } from 'path' | |
3 | import * as validator from 'validator' | |
4 | import * as Bluebird from 'bluebird' | |
5 | ||
6 | import { database as db } from '../initializers/database' | |
7 | import { | |
8 | CONFIG, | |
9 | STATIC_PATHS, | |
10 | STATIC_MAX_AGE, | |
11 | OPENGRAPH_AND_OEMBED_COMMENT, | |
12 | EMBED_SIZE | |
13 | } from '../initializers' | |
14 | import { root, readFileBufferPromise, escapeHTML } from '../helpers' | |
15 | import { asyncMiddleware } from '../middlewares' | |
16 | import { VideoInstance } from '../models' | |
17 | ||
18 | const clientsRouter = express.Router() | |
19 | ||
20 | const distPath = join(root(), 'client', 'dist') | |
21 | const embedPath = join(distPath, 'standalone', 'videos', 'embed.html') | |
22 | const indexPath = join(distPath, 'index.html') | |
23 | ||
24 | // Special route that add OpenGraph and oEmbed tags | |
25 | // Do not use a template engine for a so little thing | |
26 | clientsRouter.use('/videos/watch/:id', | |
27 | asyncMiddleware(generateWatchHtmlPage) | |
28 | ) | |
29 | ||
30 | clientsRouter.use('/videos/embed', (req: express.Request, res: express.Response, next: express.NextFunction) => { | |
31 | res.sendFile(embedPath) | |
32 | }) | |
33 | ||
34 | // Static HTML/CSS/JS client files | |
35 | clientsRouter.use('/client', express.static(distPath, { maxAge: STATIC_MAX_AGE })) | |
36 | ||
37 | // 404 for static files not found | |
38 | clientsRouter.use('/client/*', (req: express.Request, res: express.Response, next: express.NextFunction) => { | |
39 | res.sendStatus(404) | |
40 | }) | |
41 | ||
42 | // --------------------------------------------------------------------------- | |
43 | ||
44 | export { | |
45 | clientsRouter | |
46 | } | |
47 | ||
48 | // --------------------------------------------------------------------------- | |
49 | ||
50 | function addOpenGraphAndOEmbedTags (htmlStringPage: string, video: VideoInstance) { | |
51 | const previewUrl = CONFIG.WEBSERVER.URL + STATIC_PATHS.PREVIEWS + video.getPreviewName() | |
52 | const videoUrl = CONFIG.WEBSERVER.URL + '/videos/watch/' + video.uuid | |
53 | ||
54 | const videoName = escapeHTML(video.name) | |
55 | const videoDescription = escapeHTML(video.description) | |
56 | const embedUrl = CONFIG.WEBSERVER.URL + video.getEmbedPath() | |
57 | ||
58 | const openGraphMetaTags = { | |
59 | 'og:type': 'video', | |
60 | 'og:title': videoName, | |
61 | 'og:image': previewUrl, | |
62 | 'og:url': videoUrl, | |
63 | 'og:description': videoDescription, | |
64 | ||
65 | 'og:video:url': embedUrl, | |
66 | 'og:video:secure_url': embedUrl, | |
67 | 'og:video:type': 'text/html', | |
68 | 'og:video:width': EMBED_SIZE.width, | |
69 | 'og:video:height': EMBED_SIZE.height, | |
70 | ||
71 | 'name': videoName, | |
72 | 'description': videoDescription, | |
73 | 'image': previewUrl, | |
74 | ||
75 | 'twitter:card': 'summary_large_image', | |
76 | 'twitter:site': '@Chocobozzz', | |
77 | 'twitter:title': videoName, | |
78 | 'twitter:description': videoDescription, | |
79 | 'twitter:image': previewUrl, | |
80 | 'twitter:player': embedUrl, | |
81 | 'twitter:player:width': EMBED_SIZE.width, | |
82 | 'twitter:player:height': EMBED_SIZE.height | |
83 | } | |
84 | ||
85 | const oembedLinkTags = [ | |
86 | { | |
87 | type: 'application/json+oembed', | |
88 | href: CONFIG.WEBSERVER.URL + '/services/oembed?url=' + encodeURIComponent(videoUrl), | |
89 | title: videoName | |
90 | } | |
91 | ] | |
92 | ||
93 | let tagsString = '' | |
94 | Object.keys(openGraphMetaTags).forEach(tagName => { | |
95 | const tagValue = openGraphMetaTags[tagName] | |
96 | ||
97 | tagsString += `<meta property="${tagName}" content="${tagValue}" />` | |
98 | }) | |
99 | ||
100 | for (const oembedLinkTag of oembedLinkTags) { | |
101 | tagsString += `<link rel="alternate" type="${oembedLinkTag.type}" href="${oembedLinkTag.href}" title="${oembedLinkTag.title}" />` | |
102 | } | |
103 | ||
104 | return htmlStringPage.replace(OPENGRAPH_AND_OEMBED_COMMENT, tagsString) | |
105 | } | |
106 | ||
107 | async function generateWatchHtmlPage (req: express.Request, res: express.Response, next: express.NextFunction) { | |
108 | const videoId = '' + req.params.id | |
109 | let videoPromise: Bluebird<VideoInstance> | |
110 | ||
111 | // Let Angular application handle errors | |
112 | if (validator.isUUID(videoId, 4)) { | |
113 | videoPromise = db.Video.loadByUUIDAndPopulateAccountAndPodAndTags(videoId) | |
114 | } else if (validator.isInt(videoId)) { | |
115 | videoPromise = db.Video.loadAndPopulateAccountAndPodAndTags(+videoId) | |
116 | } else { | |
117 | return res.sendFile(indexPath) | |
118 | } | |
119 | ||
120 | let [ file, video ] = await Promise.all([ | |
121 | readFileBufferPromise(indexPath), | |
122 | videoPromise | |
123 | ]) | |
124 | ||
125 | const html = file.toString() | |
126 | ||
127 | // Let Angular application handle errors | |
128 | if (!video) return res.sendFile(indexPath) | |
129 | ||
130 | const htmlStringPageWithTags = addOpenGraphAndOEmbedTags(html, video) | |
131 | res.set('Content-Type', 'text/html; charset=UTF-8').send(htmlStringPageWithTags) | |
132 | } |