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