<commit_before>import * as express from 'express'
import * as Bluebird from 'bluebird'
import { buildFileLocale, getDefaultLocale, is18nLocale, POSSIBLE_LOCALES } from '../../shared/models/i18n/i18n'
import { CONFIG, CUSTOM_HTML_TAG_COMMENTS, EMBED_SIZE, STATIC_PATHS } from '../initializers'
import { join } from 'path'
import { escapeHTML } from '../helpers/core-utils'
import { VideoModel } from '../models/video/video'
import * as validator from 'validator'
import { VideoPrivacy } from '../../shared/models/videos'
import { readFile } from 'fs-extra'
import { getActivityStreamDuration } from '../models/video/video-format-utils'

export class ClientHtml {

  private static htmlCache: { [path: string]: string } = {}

  static invalidCache () {
    ClientHtml.htmlCache = {}
  }

  static async getIndexHTML (req: express.Request, res: express.Response, paramLang?: string) {
    const path = ClientHtml.getIndexPath(req, res, paramLang)
    if (ClientHtml.htmlCache[path]) return ClientHtml.htmlCache[path]

    const buffer = await readFile(path)

    let html = buffer.toString()

    html = ClientHtml.addTitleTag(html)
    html = ClientHtml.addDescriptionTag(html)
    html = ClientHtml.addCustomCSS(html)

    ClientHtml.htmlCache[path] = html

    return html
  }

  static async getWatchHTMLPage (videoId: string, req: express.Request, res: express.Response) {
    let videoPromise: Bluebird<VideoModel>

    // Let Angular application handle errors
    if (validator.isInt(videoId) || validator.isUUID(videoId, 4)) {
      videoPromise = VideoModel.loadAndPopulateAccountAndServerAndTags(videoId)
    } else {
      return ClientHtml.getIndexHTML(req, res)
    }

    const [ html, video ] = await Promise.all([
      ClientHtml.getIndexHTML(req, res),
      videoPromise
    ])

    // Let Angular application handle errors
    if (!video || video.privacy === VideoPrivacy.PRIVATE) {
      return ClientHtml.getIndexHTML(req, res)
    }

    return ClientHtml.addOpenGraphAndOEmbedTags(html, video)
  }

  private static getIndexPath (req: express.Request, res: express.Response, paramLang?: string) {
    let lang: string

    // Check param lang validity
    if (paramLang && is18nLocale(paramLang)) {
      lang = paramLang

      // Save locale in cookies
      res.cookie('clientLanguage', lang, {
        secure: CONFIG.WEBSERVER.SCHEME === 'https',
        sameSite: true,
        maxAge: 1000 * 3600 * 24 * 90 // 3 months
      })

    } else if (req.cookies.clientLanguage && is18nLocale(req.cookies.clientLanguage)) {
      lang = req.cookies.clientLanguage
    } else {
      lang = req.acceptsLanguages(POSSIBLE_LOCALES) || getDefaultLocale()
    }

    return join(__dirname, '../../../client/dist/' + buildFileLocale(lang) + '/index.html')
  }

  private static addTitleTag (htmlStringPage: string) {
    const titleTag = '<title>' + CONFIG.INSTANCE.NAME + '</title>'

    return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.TITLE, titleTag)
  }

  private static addDescriptionTag (htmlStringPage: string) {
    const descriptionTag = `<meta name="description" content="${CONFIG.INSTANCE.SHORT_DESCRIPTION}" />`

    return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.DESCRIPTION, descriptionTag)
  }

  private static addCustomCSS (htmlStringPage: string) {
    const styleTag = '<style class="custom-css-style">' + CONFIG.INSTANCE.CUSTOMIZATIONS.CSS + '</style>'

    return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.CUSTOM_CSS, styleTag)
  }

  private static addOpenGraphAndOEmbedTags (htmlStringPage: string, video: VideoModel) {
    const previewUrl = CONFIG.WEBSERVER.URL + STATIC_PATHS.PREVIEWS + video.getPreviewName()
    const videoUrl = CONFIG.WEBSERVER.URL + '/videos/watch/' + video.uuid

    const videoNameEscaped = escapeHTML(video.name)
    const videoDescriptionEscaped = escapeHTML(video.description)
    const embedUrl = CONFIG.WEBSERVER.URL + video.getEmbedStaticPath()

    const openGraphMetaTags = {
      'og:type': 'video',
      'og:title': videoNameEscaped,
      'og:image': previewUrl,
      'og:url': videoUrl,
      'og:description': videoDescriptionEscaped,

      'og:video:url': embedUrl,
      'og:video:secure_url': embedUrl,
      'og:video:type': 'video/mp4',
      'og:video:width': EMBED_SIZE.width,
      'og:video:height': EMBED_SIZE.height,

      'name': videoNameEscaped,
      'description': videoDescriptionEscaped,
      'image': previewUrl,

      'twitter:card': CONFIG.SERVICES.TWITTER.WHITELISTED ? 'player' : 'summary_large_image',
      'twitter:site': CONFIG.SERVICES.TWITTER.USERNAME,
      'twitter:title': videoNameEscaped,
      'twitter:description': videoDescriptionEscaped,
      'twitter:image': previewUrl,
      'twitter:player': embedUrl,
      'twitter:player:width': EMBED_SIZE.width,
      'twitter:player:height': EMBED_SIZE.height
    }

    const oembedLinkTags = [<commit_msg>Revert change og video type<commit_after>import * as express from 'express'
import * as Bluebird from 'bluebird'
import { buildFileLocale, getDefaultLocale, is18nLocale, POSSIBLE_LOCALES } from '../../shared/models/i18n/i18n'
import { CONFIG, CUSTOM_HTML_TAG_COMMENTS, EMBED_SIZE, STATIC_PATHS } from '../initializers'
import { join } from 'path'
import { escapeHTML } from '../helpers/core-utils'
import { VideoModel } from '../models/video/video'
import * as validator from 'validator'
import { VideoPrivacy } from '../../shared/models/videos'
import { readFile } from 'fs-extra'
import { getActivityStreamDuration } from '../models/video/video-format-utils'

export class ClientHtml {

  private static htmlCache: { [path: string]: string } = {}

  static invalidCache () {
    ClientHtml.htmlCache = {}
  }

  static async getIndexHTML (req: express.Request, res: express.Response, paramLang?: string) {
    const path = ClientHtml.getIndexPath(req, res, paramLang)
    if (ClientHtml.htmlCache[path]) return ClientHtml.htmlCache[path]

    const buffer = await readFile(path)

    let html = buffer.toString()

    html = ClientHtml.addTitleTag(html)
    html = ClientHtml.addDescriptionTag(html)
    html = ClientHtml.addCustomCSS(html)

    ClientHtml.htmlCache[path] = html

    return html
  }

  static async getWatchHTMLPage (videoId: string, req: express.Request, res: express.Response) {
    let videoPromise: Bluebird<VideoModel>

    // Let Angular application handle errors
    if (validator.isInt(videoId) || validator.isUUID(videoId, 4)) {
      videoPromise = VideoModel.loadAndPopulateAccountAndServerAndTags(videoId)
    } else {
      return ClientHtml.getIndexHTML(req, res)
    }

    const [ html, video ] = await Promise.all([
      ClientHtml.getIndexHTML(req, res),
      videoPromise
    ])

    // Let Angular application handle errors
    if (!video || video.privacy === VideoPrivacy.PRIVATE) {
      return ClientHtml.getIndexHTML(req, res)
    }

    return ClientHtml.addOpenGraphAndOEmbedTags(html, video)
  }

  private static getIndexPath (req: express.Request, res: express.Response, paramLang?: string) {
    let lang: string

    // Check param lang validity
    if (paramLang && is18nLocale(paramLang)) {
      lang = paramLang

      // Save locale in cookies
      res.cookie('clientLanguage', lang, {
        secure: CONFIG.WEBSERVER.SCHEME === 'https',
        sameSite: true,
        maxAge: 1000 * 3600 * 24 * 90 // 3 months
      })

    } else if (req.cookies.clientLanguage && is18nLocale(req.cookies.clientLanguage)) {
      lang = req.cookies.clientLanguage
    } else {
      lang = req.acceptsLanguages(POSSIBLE_LOCALES) || getDefaultLocale()
    }

    return join(__dirname, '../../../client/dist/' + buildFileLocale(lang) + '/index.html')
  }

  private static addTitleTag (htmlStringPage: string) {
    const titleTag = '<title>' + CONFIG.INSTANCE.NAME + '</title>'

    return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.TITLE, titleTag)
  }

  private static addDescriptionTag (htmlStringPage: string) {
    const descriptionTag = `<meta name="description" content="${CONFIG.INSTANCE.SHORT_DESCRIPTION}" />`

    return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.DESCRIPTION, descriptionTag)
  }

  private static addCustomCSS (htmlStringPage: string) {
    const styleTag = '<style class="custom-css-style">' + CONFIG.INSTANCE.CUSTOMIZATIONS.CSS + '</style>'

    return htmlStringPage.replace(CUSTOM_HTML_TAG_COMMENTS.CUSTOM_CSS, styleTag)
  }

  private static addOpenGraphAndOEmbedTags (htmlStringPage: string, video: VideoModel) {
    const previewUrl = CONFIG.WEBSERVER.URL + STATIC_PATHS.PREVIEWS + video.getPreviewName()
    const videoUrl = CONFIG.WEBSERVER.URL + '/videos/watch/' + video.uuid

    const videoNameEscaped = escapeHTML(video.name)
    const videoDescriptionEscaped = escapeHTML(video.description)
    const embedUrl = CONFIG.WEBSERVER.URL + video.getEmbedStaticPath()

    const openGraphMetaTags = {
      'og:type': 'video',
      'og:title': videoNameEscaped,
      'og:image': previewUrl,
      'og:url': videoUrl,
      'og:description': videoDescriptionEscaped,

      'og:video:url': embedUrl,
      'og:video:secure_url': embedUrl,
      'og:video:type': 'text/html',
      'og:video:width': EMBED_SIZE.width,
      'og:video:height': EMBED_SIZE.height,

      'name': videoNameEscaped,
      'description': videoDescriptionEscaped,
      'image': previewUrl,

      'twitter:card': CONFIG.SERVICES.TWITTER.WHITELISTED ? 'player' : 'summary_large_image',
      'twitter:site': CONFIG.SERVICES.TWITTER.USERNAME,
      'twitter:title': videoNameEscaped,
      'twitter:description': videoDescriptionEscaped,
      'twitter:image': previewUrl,
      'twitter:player': embedUrl,
      'twitter:player:width': EMBED_SIZE.width,
      'twitter:player:height': EMBED_SIZE.height
    }

    const oembedLinkTags = [
{'fraction_non_alphanumeric': 0.11995104039167687, 'fraction_numerical': 0.004997960016319869, 'mean_word_length': 3.799314733235438, 'pattern_counts': {'":': 0, '<': 15, '<?xml version=': 0, '>': 15, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '4593941', 'n_tokens_mistral': 3102, 'n_tokens_neox': 2978, 'n_words': 642}