mirror of https://github.com/Chocobozzz/PeerTube
261 lines
9.3 KiB
TypeScript
261 lines
9.3 KiB
TypeScript
import * as express from 'express'
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import { buildFileLocale, getDefaultLocale, is18nLocale, POSSIBLE_LOCALES } from '../../shared/models/i18n/i18n'
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import { CUSTOM_HTML_TAG_COMMENTS, EMBED_SIZE, PLUGIN_GLOBAL_CSS_PATH, WEBSERVER } from '../initializers/constants'
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import { join } from 'path'
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import { escapeHTML, sha256 } from '../helpers/core-utils'
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import { VideoModel } from '../models/video/video'
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import validator from 'validator'
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import { VideoPrivacy } from '../../shared/models/videos'
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import { readFile } from 'fs-extra'
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import { getActivityStreamDuration } from '../models/video/video-format-utils'
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import { AccountModel } from '../models/account/account'
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import { VideoChannelModel } from '../models/video/video-channel'
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import * as Bluebird from 'bluebird'
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import { CONFIG } from '../initializers/config'
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import { logger } from '../helpers/logger'
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import { MAccountActor, MChannelActor, MVideo } from '../types/models'
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export class ClientHtml {
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private static htmlCache: { [path: string]: string } = {}
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static invalidCache () {
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logger.info('Cleaning HTML cache.')
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ClientHtml.htmlCache = {}
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}
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static async getDefaultHTMLPage (req: express.Request, res: express.Response, paramLang?: string) {
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const html = paramLang
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? await ClientHtml.getIndexHTML(req, res, paramLang)
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: await ClientHtml.getIndexHTML(req, res)
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let customHtml = ClientHtml.addTitleTag(html)
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customHtml = ClientHtml.addDescriptionTag(customHtml)
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return customHtml
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}
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static async getWatchHTMLPage (videoId: string, req: express.Request, res: express.Response) {
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// Let Angular application handle errors
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if (!validator.isInt(videoId) && !validator.isUUID(videoId, 4)) {
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res.status(404)
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return ClientHtml.getIndexHTML(req, res)
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}
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const [ html, video ] = await Promise.all([
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ClientHtml.getIndexHTML(req, res),
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VideoModel.loadWithBlacklist(videoId)
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])
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// Let Angular application handle errors
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if (!video || video.privacy === VideoPrivacy.PRIVATE || video.privacy === VideoPrivacy.INTERNAL || video.VideoBlacklist) {
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res.status(404)
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return html
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}
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let customHtml = ClientHtml.addTitleTag(html, escapeHTML(video.name))
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customHtml = ClientHtml.addDescriptionTag(customHtml, escapeHTML(video.description))
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customHtml = ClientHtml.addVideoOpenGraphAndOEmbedTags(customHtml, video)
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return customHtml
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}
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static async getAccountHTMLPage (nameWithHost: string, req: express.Request, res: express.Response) {
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return this.getAccountOrChannelHTMLPage(() => AccountModel.loadByNameWithHost(nameWithHost), req, res)
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}
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static async getVideoChannelHTMLPage (nameWithHost: string, req: express.Request, res: express.Response) {
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return this.getAccountOrChannelHTMLPage(() => VideoChannelModel.loadByNameWithHostAndPopulateAccount(nameWithHost), req, res)
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}
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private static async getAccountOrChannelHTMLPage (
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loader: () => Bluebird<MAccountActor | MChannelActor>,
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req: express.Request,
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res: express.Response
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) {
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const [ html, entity ] = await Promise.all([
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ClientHtml.getIndexHTML(req, res),
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loader()
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])
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// Let Angular application handle errors
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if (!entity) {
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res.status(404)
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return ClientHtml.getIndexHTML(req, res)
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}
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let customHtml = ClientHtml.addTitleTag(html, escapeHTML(entity.getDisplayName()))
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customHtml = ClientHtml.addDescriptionTag(customHtml, escapeHTML(entity.description))
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customHtml = ClientHtml.addAccountOrChannelMetaTags(customHtml, entity)
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return customHtml
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}
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private static async getIndexHTML (req: express.Request, res: express.Response, paramLang?: string) {
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const path = ClientHtml.getIndexPath(req, res, paramLang)
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if (ClientHtml.htmlCache[path]) return ClientHtml.htmlCache[path]
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const buffer = await readFile(path)
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let html = buffer.toString()
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if (paramLang) html = ClientHtml.addHtmlLang(html, paramLang)
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html = ClientHtml.addCustomCSS(html)
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html = await ClientHtml.addAsyncPluginCSS(html)
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ClientHtml.htmlCache[path] = html
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return html
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}
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private static getIndexPath (req: express.Request, res: express.Response, paramLang: string) {
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let lang: string
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// Check param lang validity
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if (paramLang && is18nLocale(paramLang)) {
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lang = paramLang
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// Save locale in cookies
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res.cookie('clientLanguage', lang, {
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secure: WEBSERVER.SCHEME === 'https',
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sameSite: 'none',
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maxAge: 1000 * 3600 * 24 * 90 // 3 months
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})
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} else if (req.cookies.clientLanguage && is18nLocale(req.cookies.clientLanguage)) {
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lang = req.cookies.clientLanguage
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} else {
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lang = req.acceptsLanguages(POSSIBLE_LOCALES) || getDefaultLocale()
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}
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return join(__dirname, '../../../client/dist/' + buildFileLocale(lang) + '/index.html')
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}
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private static addHtmlLang (htmlStringPage: string, paramLang: string) {
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return htmlStringPage.replace('<html>', `<html lang="${paramLang}">`)
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}
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private static addTitleTag (htmlStringPage: string, title?: string) {
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let text = title || CONFIG.INSTANCE.NAME
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if (title) text += ` - ${CONFIG.INSTANCE.NAME}`
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const titleTag = `<title>${text}</title>`
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return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.TITLE, titleTag)
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}
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private static addDescriptionTag (htmlStringPage: string, description?: string) {
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const content = description || CONFIG.INSTANCE.SHORT_DESCRIPTION
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const descriptionTag = `<meta name="description" content="${content}" />`
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return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.DESCRIPTION, descriptionTag)
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}
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private static addCustomCSS (htmlStringPage: string) {
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const styleTag = `<style class="custom-css-style">${CONFIG.INSTANCE.CUSTOMIZATIONS.CSS}</style>`
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return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.CUSTOM_CSS, styleTag)
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}
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private static async addAsyncPluginCSS (htmlStringPage: string) {
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const globalCSSContent = await readFile(PLUGIN_GLOBAL_CSS_PATH)
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if (globalCSSContent.byteLength === 0) return htmlStringPage
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const fileHash = sha256(globalCSSContent)
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const linkTag = `<link rel="stylesheet" href="/plugins/global.css?hash=${fileHash}" />`
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return htmlStringPage.replace('</head>', linkTag + '</head>')
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}
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private static addVideoOpenGraphAndOEmbedTags (htmlStringPage: string, video: MVideo) {
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const previewUrl = WEBSERVER.URL + video.getPreviewStaticPath()
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const videoUrl = WEBSERVER.URL + video.getWatchStaticPath()
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const videoNameEscaped = escapeHTML(video.name)
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const videoDescriptionEscaped = escapeHTML(video.description)
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const embedUrl = WEBSERVER.URL + video.getEmbedStaticPath()
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const openGraphMetaTags = {
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'og:type': 'video',
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'og:title': videoNameEscaped,
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'og:image': previewUrl,
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'og:url': videoUrl,
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'og:description': videoDescriptionEscaped,
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'og:video:url': embedUrl,
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'og:video:secure_url': embedUrl,
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'og:video:type': 'text/html',
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'og:video:width': EMBED_SIZE.width,
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'og:video:height': EMBED_SIZE.height,
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'name': videoNameEscaped,
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'description': videoDescriptionEscaped,
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'image': previewUrl,
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'twitter:card': CONFIG.SERVICES.TWITTER.WHITELISTED ? 'player' : 'summary_large_image',
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'twitter:site': CONFIG.SERVICES.TWITTER.USERNAME,
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'twitter:title': videoNameEscaped,
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'twitter:description': videoDescriptionEscaped,
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'twitter:image': previewUrl,
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'twitter:player': embedUrl,
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'twitter:player:width': EMBED_SIZE.width,
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'twitter:player:height': EMBED_SIZE.height
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}
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const oembedLinkTags = [
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{
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type: 'application/json+oembed',
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href: WEBSERVER.URL + '/services/oembed?url=' + encodeURIComponent(videoUrl),
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title: videoNameEscaped
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}
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]
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const schemaTags = {
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'@context': 'http://schema.org',
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'@type': 'VideoObject',
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'name': videoNameEscaped,
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'description': videoDescriptionEscaped,
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'thumbnailUrl': previewUrl,
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'uploadDate': video.createdAt.toISOString(),
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'duration': getActivityStreamDuration(video.duration),
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'contentUrl': videoUrl,
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'embedUrl': embedUrl,
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'interactionCount': video.views
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}
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let tagsString = ''
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// Opengraph
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Object.keys(openGraphMetaTags).forEach(tagName => {
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const tagValue = openGraphMetaTags[tagName]
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tagsString += `<meta property="${tagName}" content="${tagValue}" />`
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})
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// OEmbed
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for (const oembedLinkTag of oembedLinkTags) {
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tagsString += `<link rel="alternate" type="${oembedLinkTag.type}" href="${oembedLinkTag.href}" title="${oembedLinkTag.title}" />`
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}
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// Schema.org
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tagsString += `<script type="application/ld+json">${JSON.stringify(schemaTags)}</script>`
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// SEO, use origin video url so Google does not index remote videos
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tagsString += `<link rel="canonical" href="${video.url}" />`
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return this.addOpenGraphAndOEmbedTags(htmlStringPage, tagsString)
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}
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private static addAccountOrChannelMetaTags (htmlStringPage: string, entity: MAccountActor | MChannelActor) {
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// SEO, use origin account or channel URL
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const metaTags = `<link rel="canonical" href="${entity.Actor.url}" />`
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return this.addOpenGraphAndOEmbedTags(htmlStringPage, metaTags)
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}
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private static addOpenGraphAndOEmbedTags (htmlStringPage: string, metaTags: string) {
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return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.META_TAGS, metaTags)
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}
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}
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