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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 { ACCEPT_HEADERS, 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 | import { | |
11 | buildFileLocale, | |
12 | getCompleteLocale, | |
13 | getDefaultLocale, | |
14 | is18nLocale, | |
15 | LOCALE_FILES, | |
16 | POSSIBLE_LOCALES | |
17 | } from '../../shared/models/i18n/i18n' | |
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('' + | |
32 | '/videos/embed', (req: express.Request, res: express.Response, next: express.NextFunction) => { | |
33 | res.sendFile(embedPath) | |
34 | }) | |
35 | ||
36 | // Static HTML/CSS/JS client files | |
37 | ||
38 | const staticClientFiles = [ | |
39 | 'manifest.json', | |
40 | 'ngsw-worker.js', | |
41 | 'ngsw.json' | |
42 | ] | |
43 | for (const staticClientFile of staticClientFiles) { | |
44 | const path = join(root(), 'client', 'dist', staticClientFile) | |
45 | clientsRouter.use('/' + staticClientFile, express.static(path, { maxAge: STATIC_MAX_AGE })) | |
46 | } | |
47 | ||
48 | clientsRouter.use('/client', express.static(distPath, { maxAge: STATIC_MAX_AGE })) | |
49 | clientsRouter.use('/client/assets/images', express.static(assetsImagesPath, { maxAge: STATIC_MAX_AGE })) | |
50 | ||
51 | clientsRouter.use('/client/locales/:locale/:file.json', function (req, res) { | |
52 | const locale = req.params.locale | |
53 | const file = req.params.file | |
54 | ||
55 | if (is18nLocale(locale) && LOCALE_FILES.indexOf(file) !== -1) { | |
56 | const completeLocale = getCompleteLocale(locale) | |
57 | const completeFileLocale = buildFileLocale(completeLocale) | |
58 | return res.sendFile(join(__dirname, `../../../client/dist/locale/${file}_${completeFileLocale}.json`)) | |
59 | } | |
60 | ||
61 | return res.sendStatus(404) | |
62 | }) | |
63 | ||
64 | // 404 for static files not found | |
65 | clientsRouter.use('/client/*', (req: express.Request, res: express.Response, next: express.NextFunction) => { | |
66 | res.sendStatus(404) | |
67 | }) | |
68 | ||
69 | // Always serve index client page (the client is a single page application, let it handle routing) | |
70 | // Try to provide the right language index.html | |
71 | clientsRouter.use('/(:language)?', function (req, res) { | |
72 | if (req.accepts(ACCEPT_HEADERS) === 'html') { | |
73 | return res.sendFile(getIndexPath(req, res, req.params.language)) | |
74 | } | |
75 | ||
76 | return res.status(404).end() | |
77 | }) | |
78 | ||
79 | // --------------------------------------------------------------------------- | |
80 | ||
81 | export { | |
82 | clientsRouter | |
83 | } | |
84 | ||
85 | // --------------------------------------------------------------------------- | |
86 | ||
87 | function getIndexPath (req: express.Request, res: express.Response, paramLang?: string) { | |
88 | let lang: string | |
89 | ||
90 | // Check param lang validity | |
91 | if (paramLang && is18nLocale(paramLang)) { | |
92 | lang = paramLang | |
93 | ||
94 | // Save locale in cookies | |
95 | res.cookie('clientLanguage', lang, { | |
96 | secure: CONFIG.WEBSERVER.SCHEME === 'https', | |
97 | sameSite: true, | |
98 | maxAge: 1000 * 3600 * 24 * 90 // 3 months | |
99 | }) | |
100 | ||
101 | } else if (req.cookies.clientLanguage && is18nLocale(req.cookies.clientLanguage)) { | |
102 | lang = req.cookies.clientLanguage | |
103 | } else { | |
104 | lang = req.acceptsLanguages(POSSIBLE_LOCALES) || getDefaultLocale() | |
105 | } | |
106 | ||
107 | return join(__dirname, '../../../client/dist/' + buildFileLocale(lang) + '/index.html') | |
108 | } | |
109 | ||
110 | function addOpenGraphAndOEmbedTags (htmlStringPage: string, video: VideoModel) { | |
111 | const previewUrl = CONFIG.WEBSERVER.URL + STATIC_PATHS.PREVIEWS + video.getPreviewName() | |
112 | const videoUrl = CONFIG.WEBSERVER.URL + '/videos/watch/' + video.uuid | |
113 | ||
114 | const videoNameEscaped = escapeHTML(video.name) | |
115 | const videoDescriptionEscaped = escapeHTML(video.description) | |
116 | const embedUrl = CONFIG.WEBSERVER.URL + video.getEmbedPath() | |
117 | ||
118 | const openGraphMetaTags = { | |
119 | 'og:type': 'video', | |
120 | 'og:title': videoNameEscaped, | |
121 | 'og:image': previewUrl, | |
122 | 'og:url': videoUrl, | |
123 | 'og:description': videoDescriptionEscaped, | |
124 | ||
125 | 'og:video:url': embedUrl, | |
126 | 'og:video:secure_url': embedUrl, | |
127 | 'og:video:type': 'text/html', | |
128 | 'og:video:width': EMBED_SIZE.width, | |
129 | 'og:video:height': EMBED_SIZE.height, | |
130 | ||
131 | 'name': videoNameEscaped, | |
132 | 'description': videoDescriptionEscaped, | |
133 | 'image': previewUrl, | |
134 | ||
135 | 'twitter:card': CONFIG.SERVICES.TWITTER.WHITELISTED ? 'player' : 'summary_large_image', | |
136 | 'twitter:site': CONFIG.SERVICES.TWITTER.USERNAME, | |
137 | 'twitter:title': videoNameEscaped, | |
138 | 'twitter:description': videoDescriptionEscaped, | |
139 | 'twitter:image': previewUrl, | |
140 | 'twitter:player': embedUrl, | |
141 | 'twitter:player:width': EMBED_SIZE.width, | |
142 | 'twitter:player:height': EMBED_SIZE.height | |
143 | } | |
144 | ||
145 | const oembedLinkTags = [ | |
146 | { | |
147 | type: 'application/json+oembed', | |
148 | href: CONFIG.WEBSERVER.URL + '/services/oembed?url=' + encodeURIComponent(videoUrl), | |
149 | title: videoNameEscaped | |
150 | } | |
151 | ] | |
152 | ||
153 | const schemaTags = { | |
154 | '@context': 'http://schema.org', | |
155 | '@type': 'VideoObject', | |
156 | name: videoNameEscaped, | |
157 | description: videoDescriptionEscaped, | |
158 | thumbnailUrl: previewUrl, | |
159 | uploadDate: video.createdAt.toISOString(), | |
160 | duration: video.getActivityStreamDuration(), | |
161 | contentUrl: videoUrl, | |
162 | embedUrl: embedUrl, | |
163 | interactionCount: video.views | |
164 | } | |
165 | ||
166 | let tagsString = '' | |
167 | ||
168 | // Opengraph | |
169 | Object.keys(openGraphMetaTags).forEach(tagName => { | |
170 | const tagValue = openGraphMetaTags[tagName] | |
171 | ||
172 | tagsString += `<meta property="${tagName}" content="${tagValue}" />` | |
173 | }) | |
174 | ||
175 | // OEmbed | |
176 | for (const oembedLinkTag of oembedLinkTags) { | |
177 | tagsString += `<link rel="alternate" type="${oembedLinkTag.type}" href="${oembedLinkTag.href}" title="${oembedLinkTag.title}" />` | |
178 | } | |
179 | ||
180 | // Schema.org | |
181 | tagsString += `<script type="application/ld+json">${JSON.stringify(schemaTags)}</script>` | |
182 | ||
183 | // SEO | |
184 | tagsString += `<link rel="canonical" href="${videoUrl}" />` | |
185 | ||
186 | return htmlStringPage.replace(OPENGRAPH_AND_OEMBED_COMMENT, tagsString) | |
187 | } | |
188 | ||
189 | async function generateWatchHtmlPage (req: express.Request, res: express.Response, next: express.NextFunction) { | |
190 | const videoId = '' + req.params.id | |
191 | let videoPromise: Bluebird<VideoModel> | |
192 | ||
193 | // Let Angular application handle errors | |
194 | if (validator.isUUID(videoId, 4)) { | |
195 | videoPromise = VideoModel.loadByUUIDAndPopulateAccountAndServerAndTags(videoId) | |
196 | } else if (validator.isInt(videoId)) { | |
197 | videoPromise = VideoModel.loadAndPopulateAccountAndServerAndTags(+videoId) | |
198 | } else { | |
199 | return res.sendFile(getIndexPath(req, res)) | |
200 | } | |
201 | ||
202 | let [ file, video ] = await Promise.all([ | |
203 | readFileBufferPromise(getIndexPath(req, res)), | |
204 | videoPromise | |
205 | ]) | |
206 | ||
207 | const html = file.toString() | |
208 | ||
209 | // Let Angular application handle errors | |
210 | if (!video || video.privacy === VideoPrivacy.PRIVATE) return res.sendFile(getIndexPath(req, res)) | |
211 | ||
212 | const htmlStringPageWithTags = addOpenGraphAndOEmbedTags(html, video) | |
213 | res.set('Content-Type', 'text/html; charset=UTF-8').send(htmlStringPageWithTags) | |
214 | } |