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e032aec9 | 1 | import * as express from 'express' |
e032aec9 | 2 | import { buildFileLocale, getDefaultLocale, is18nLocale, POSSIBLE_LOCALES } from '../../shared/models/i18n/i18n' |
a8b666e9 | 3 | import { CUSTOM_HTML_TAG_COMMENTS, EMBED_SIZE, PLUGIN_GLOBAL_CSS_PATH, WEBSERVER } from '../initializers/constants' |
e032aec9 | 4 | import { join } from 'path' |
a8b666e9 | 5 | import { escapeHTML, sha256 } from '../helpers/core-utils' |
e032aec9 C |
6 | import { VideoModel } from '../models/video/video' |
7 | import * as validator from 'validator' | |
8 | import { VideoPrivacy } from '../../shared/models/videos' | |
62689b94 | 9 | import { readFile } from 'fs-extra' |
098eb377 | 10 | import { getActivityStreamDuration } from '../models/video/video-format-utils' |
92bf2f62 C |
11 | import { AccountModel } from '../models/account/account' |
12 | import { VideoChannelModel } from '../models/video/video-channel' | |
13 | import * as Bluebird from 'bluebird' | |
6dd9de95 | 14 | import { CONFIG } from '../initializers/config' |
3e753302 | 15 | import { logger } from '../helpers/logger' |
453e83ea | 16 | import { MAccountActor, MChannelActor, MVideo } from '../typings/models' |
e032aec9 C |
17 | |
18 | export class ClientHtml { | |
19 | ||
92bf2f62 | 20 | private static htmlCache: { [ path: string ]: string } = {} |
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21 | |
22 | static invalidCache () { | |
3e753302 C |
23 | logger.info('Cleaning HTML cache.') |
24 | ||
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25 | ClientHtml.htmlCache = {} |
26 | } | |
27 | ||
9aac4423 C |
28 | static async getDefaultHTMLPage (req: express.Request, res: express.Response, paramLang?: string) { |
29 | const html = await ClientHtml.getIndexHTML(req, res, paramLang) | |
e032aec9 | 30 | |
9aac4423 C |
31 | let customHtml = ClientHtml.addTitleTag(html) |
32 | customHtml = ClientHtml.addDescriptionTag(customHtml) | |
e032aec9 | 33 | |
9aac4423 | 34 | return customHtml |
e032aec9 C |
35 | } |
36 | ||
37 | static async getWatchHTMLPage (videoId: string, req: express.Request, res: express.Response) { | |
e032aec9 | 38 | // Let Angular application handle errors |
92bf2f62 | 39 | if (!validator.isInt(videoId) && !validator.isUUID(videoId, 4)) { |
e032aec9 C |
40 | return ClientHtml.getIndexHTML(req, res) |
41 | } | |
42 | ||
43 | const [ html, video ] = await Promise.all([ | |
44 | ClientHtml.getIndexHTML(req, res), | |
d636ab58 | 45 | VideoModel.loadWithBlacklist(videoId) |
e032aec9 C |
46 | ]) |
47 | ||
48 | // Let Angular application handle errors | |
d636ab58 | 49 | if (!video || video.privacy === VideoPrivacy.PRIVATE || video.VideoBlacklist) { |
e032aec9 C |
50 | return ClientHtml.getIndexHTML(req, res) |
51 | } | |
52 | ||
9aac4423 C |
53 | let customHtml = ClientHtml.addTitleTag(html, escapeHTML(video.name)) |
54 | customHtml = ClientHtml.addDescriptionTag(customHtml, escapeHTML(video.description)) | |
92bf2f62 C |
55 | customHtml = ClientHtml.addVideoOpenGraphAndOEmbedTags(customHtml, video) |
56 | ||
57 | return customHtml | |
58 | } | |
59 | ||
60 | static async getAccountHTMLPage (nameWithHost: string, req: express.Request, res: express.Response) { | |
61 | return this.getAccountOrChannelHTMLPage(() => AccountModel.loadByNameWithHost(nameWithHost), req, res) | |
62 | } | |
63 | ||
64 | static async getVideoChannelHTMLPage (nameWithHost: string, req: express.Request, res: express.Response) { | |
65 | return this.getAccountOrChannelHTMLPage(() => VideoChannelModel.loadByNameWithHostAndPopulateAccount(nameWithHost), req, res) | |
66 | } | |
67 | ||
68 | private static async getAccountOrChannelHTMLPage ( | |
453e83ea | 69 | loader: () => Bluebird<MAccountActor | MChannelActor>, |
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70 | req: express.Request, |
71 | res: express.Response | |
72 | ) { | |
73 | const [ html, entity ] = await Promise.all([ | |
74 | ClientHtml.getIndexHTML(req, res), | |
75 | loader() | |
76 | ]) | |
77 | ||
78 | // Let Angular application handle errors | |
79 | if (!entity) { | |
80 | return ClientHtml.getIndexHTML(req, res) | |
81 | } | |
82 | ||
83 | let customHtml = ClientHtml.addTitleTag(html, escapeHTML(entity.getDisplayName())) | |
84 | customHtml = ClientHtml.addDescriptionTag(customHtml, escapeHTML(entity.description)) | |
85 | customHtml = ClientHtml.addAccountOrChannelMetaTags(customHtml, entity) | |
9aac4423 C |
86 | |
87 | return customHtml | |
88 | } | |
89 | ||
90 | private static async getIndexHTML (req: express.Request, res: express.Response, paramLang?: string) { | |
91 | const path = ClientHtml.getIndexPath(req, res, paramLang) | |
92bf2f62 | 92 | if (ClientHtml.htmlCache[ path ]) return ClientHtml.htmlCache[ path ] |
9aac4423 C |
93 | |
94 | const buffer = await readFile(path) | |
95 | ||
96 | let html = buffer.toString() | |
97 | ||
98 | html = ClientHtml.addCustomCSS(html) | |
a8b666e9 | 99 | html = await ClientHtml.addAsyncPluginCSS(html) |
9aac4423 | 100 | |
92bf2f62 | 101 | ClientHtml.htmlCache[ path ] = html |
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102 | |
103 | return html | |
e032aec9 C |
104 | } |
105 | ||
106 | private static getIndexPath (req: express.Request, res: express.Response, paramLang?: string) { | |
107 | let lang: string | |
108 | ||
109 | // Check param lang validity | |
110 | if (paramLang && is18nLocale(paramLang)) { | |
111 | lang = paramLang | |
112 | ||
113 | // Save locale in cookies | |
114 | res.cookie('clientLanguage', lang, { | |
6dd9de95 | 115 | secure: WEBSERVER.SCHEME === 'https', |
e032aec9 C |
116 | sameSite: true, |
117 | maxAge: 1000 * 3600 * 24 * 90 // 3 months | |
118 | }) | |
119 | ||
120 | } else if (req.cookies.clientLanguage && is18nLocale(req.cookies.clientLanguage)) { | |
121 | lang = req.cookies.clientLanguage | |
122 | } else { | |
123 | lang = req.acceptsLanguages(POSSIBLE_LOCALES) || getDefaultLocale() | |
124 | } | |
125 | ||
126 | return join(__dirname, '../../../client/dist/' + buildFileLocale(lang) + '/index.html') | |
127 | } | |
128 | ||
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129 | private static addTitleTag (htmlStringPage: string, title?: string) { |
130 | let text = title || CONFIG.INSTANCE.NAME | |
131 | if (title) text += ` - ${CONFIG.INSTANCE.NAME}` | |
132 | ||
133 | const titleTag = `<title>${text}</title>` | |
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134 | |
135 | return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.TITLE, titleTag) | |
136 | } | |
137 | ||
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138 | private static addDescriptionTag (htmlStringPage: string, description?: string) { |
139 | const content = description || CONFIG.INSTANCE.SHORT_DESCRIPTION | |
140 | const descriptionTag = `<meta name="description" content="${content}" />` | |
e032aec9 C |
141 | |
142 | return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.DESCRIPTION, descriptionTag) | |
143 | } | |
144 | ||
145 | private static addCustomCSS (htmlStringPage: string) { | |
ffb321be | 146 | const styleTag = `<style class="custom-css-style">${CONFIG.INSTANCE.CUSTOMIZATIONS.CSS}</style>` |
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147 | |
148 | return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.CUSTOM_CSS, styleTag) | |
149 | } | |
150 | ||
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151 | private static async addAsyncPluginCSS (htmlStringPage: string) { |
152 | const globalCSSContent = await readFile(PLUGIN_GLOBAL_CSS_PATH) | |
3e753302 | 153 | if (globalCSSContent.byteLength === 0) return htmlStringPage |
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154 | |
155 | const fileHash = sha256(globalCSSContent) | |
156 | const linkTag = `<link rel="stylesheet" href="/plugins/global.css?hash=${fileHash}" />` | |
ffb321be C |
157 | |
158 | return htmlStringPage.replace('</head>', linkTag + '</head>') | |
159 | } | |
160 | ||
453e83ea | 161 | private static addVideoOpenGraphAndOEmbedTags (htmlStringPage: string, video: MVideo) { |
6dd9de95 C |
162 | const previewUrl = WEBSERVER.URL + video.getPreviewStaticPath() |
163 | const videoUrl = WEBSERVER.URL + video.getWatchStaticPath() | |
e032aec9 C |
164 | |
165 | const videoNameEscaped = escapeHTML(video.name) | |
166 | const videoDescriptionEscaped = escapeHTML(video.description) | |
6dd9de95 | 167 | const embedUrl = WEBSERVER.URL + video.getEmbedStaticPath() |
e032aec9 C |
168 | |
169 | const openGraphMetaTags = { | |
170 | 'og:type': 'video', | |
171 | 'og:title': videoNameEscaped, | |
172 | 'og:image': previewUrl, | |
173 | 'og:url': videoUrl, | |
174 | 'og:description': videoDescriptionEscaped, | |
175 | ||
176 | 'og:video:url': embedUrl, | |
177 | 'og:video:secure_url': embedUrl, | |
fb651cf2 | 178 | 'og:video:type': 'text/html', |
e032aec9 C |
179 | 'og:video:width': EMBED_SIZE.width, |
180 | 'og:video:height': EMBED_SIZE.height, | |
181 | ||
182 | 'name': videoNameEscaped, | |
183 | 'description': videoDescriptionEscaped, | |
184 | 'image': previewUrl, | |
185 | ||
186 | 'twitter:card': CONFIG.SERVICES.TWITTER.WHITELISTED ? 'player' : 'summary_large_image', | |
187 | 'twitter:site': CONFIG.SERVICES.TWITTER.USERNAME, | |
188 | 'twitter:title': videoNameEscaped, | |
189 | 'twitter:description': videoDescriptionEscaped, | |
190 | 'twitter:image': previewUrl, | |
191 | 'twitter:player': embedUrl, | |
192 | 'twitter:player:width': EMBED_SIZE.width, | |
193 | 'twitter:player:height': EMBED_SIZE.height | |
194 | } | |
195 | ||
196 | const oembedLinkTags = [ | |
197 | { | |
198 | type: 'application/json+oembed', | |
6dd9de95 | 199 | href: WEBSERVER.URL + '/services/oembed?url=' + encodeURIComponent(videoUrl), |
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200 | title: videoNameEscaped |
201 | } | |
202 | ] | |
203 | ||
204 | const schemaTags = { | |
205 | '@context': 'http://schema.org', | |
206 | '@type': 'VideoObject', | |
207 | name: videoNameEscaped, | |
208 | description: videoDescriptionEscaped, | |
209 | thumbnailUrl: previewUrl, | |
210 | uploadDate: video.createdAt.toISOString(), | |
098eb377 | 211 | duration: getActivityStreamDuration(video.duration), |
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212 | contentUrl: videoUrl, |
213 | embedUrl: embedUrl, | |
214 | interactionCount: video.views | |
215 | } | |
216 | ||
217 | let tagsString = '' | |
218 | ||
219 | // Opengraph | |
220 | Object.keys(openGraphMetaTags).forEach(tagName => { | |
92bf2f62 | 221 | const tagValue = openGraphMetaTags[ tagName ] |
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222 | |
223 | tagsString += `<meta property="${tagName}" content="${tagValue}" />` | |
224 | }) | |
225 | ||
226 | // OEmbed | |
227 | for (const oembedLinkTag of oembedLinkTags) { | |
228 | tagsString += `<link rel="alternate" type="${oembedLinkTag.type}" href="${oembedLinkTag.href}" title="${oembedLinkTag.title}" />` | |
229 | } | |
230 | ||
231 | // Schema.org | |
232 | tagsString += `<script type="application/ld+json">${JSON.stringify(schemaTags)}</script>` | |
233 | ||
c04eb647 C |
234 | // SEO, use origin video url so Google does not index remote videos |
235 | tagsString += `<link rel="canonical" href="${video.url}" />` | |
e032aec9 | 236 | |
92bf2f62 C |
237 | return this.addOpenGraphAndOEmbedTags(htmlStringPage, tagsString) |
238 | } | |
239 | ||
453e83ea | 240 | private static addAccountOrChannelMetaTags (htmlStringPage: string, entity: MAccountActor | MChannelActor) { |
92bf2f62 C |
241 | // SEO, use origin account or channel URL |
242 | const metaTags = `<link rel="canonical" href="${entity.Actor.url}" />` | |
243 | ||
244 | return this.addOpenGraphAndOEmbedTags(htmlStringPage, metaTags) | |
245 | } | |
246 | ||
247 | private static addOpenGraphAndOEmbedTags (htmlStringPage: string, metaTags: string) { | |
248 | return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.META_TAGS, metaTags) | |
e032aec9 C |
249 | } |
250 | } |