3 files changed, 47 insertions, 5 deletions

diff --git a/client/src/assets/player/peertube-player.ts b/client/src/assets/player/peertube-player.ts
index 1bf6c9267..792662b6c 100644
--- a/client/src/assets/player/peertube-player.ts
+++ b/client/src/assets/player/peertube-player.ts
@@ -10,7 +10,7 @@ import './webtorrent-info-button'
 import './peertube-videojs-plugin'
 import './peertube-load-progress-bar'
 import './theater-button'
-import { VideoJSCaption, videojsUntyped } from './peertube-videojs-typings'
+import { UserWatching, VideoJSCaption, videojsUntyped } from './peertube-videojs-typings'
 import { buildVideoEmbed, buildVideoLink, copyToClipboard } from './utils'
 import { getCompleteLocale, getShortLocale, is18nLocale, isDefaultLocale } from '../../../../shared/models/i18n/i18n'
 
@@ -34,10 +34,13 @@ function getVideojsOptions (options: {
   startTime: number | string
   theaterMode: boolean,
   videoCaptions: VideoJSCaption[],
+
   language?: string,
   controls?: boolean,
   muted?: boolean,
   loop?: boolean
+
+  userWatching?: UserWatching
 }) {
   const videojsOptions = {
     // We don't use text track settings for now
@@ -57,7 +60,8 @@ function getVideojsOptions (options: {
         playerElement: options.playerElement,
         videoViewUrl: options.videoViewUrl,
         videoDuration: options.videoDuration,
-        startTime: options.startTime
+        startTime: options.startTime,
+        userWatching: options.userWatching
       }
     },
     controlBar: {
diff --git a/client/src/assets/player/peertube-videojs-plugin.ts b/client/src/assets/player/peertube-videojs-plugin.ts
index adc376e94..2330f476f 100644
--- a/client/src/assets/player/peertube-videojs-plugin.ts
+++ b/client/src/assets/player/peertube-videojs-plugin.ts
@@ -3,7 +3,7 @@ import * as WebTorrent from 'webtorrent'
 import { VideoFile } from '../../../../shared/models/videos/video.model'
 import { renderVideo } from './video-renderer'
 import './settings-menu-button'
-import { PeertubePluginOptions, VideoJSCaption, VideoJSComponentInterface, videojsUntyped } from './peertube-videojs-typings'
+import { PeertubePluginOptions, UserWatching, VideoJSCaption, VideoJSComponentInterface, videojsUntyped } from './peertube-videojs-typings'
 import { isMobile, timeToInt, videoFileMaxByResolution, videoFileMinByResolution } from './utils'
 import * as CacheChunkStore from 'cache-chunk-store'
 import { PeertubeChunkStore } from './peertube-chunk-store'
@@ -32,7 +32,8 @@ class PeerTubePlugin extends Plugin {
     AUTO_QUALITY_THRESHOLD_PERCENT: 30, // Bandwidth should be 30% more important than a resolution bitrate to change to it
     AUTO_QUALITY_OBSERVATION_TIME: 10000, // Wait 10 seconds after having change the resolution before another check
     AUTO_QUALITY_HIGHER_RESOLUTION_DELAY: 5000, // Buffering higher resolution during 5 seconds
-    BANDWIDTH_AVERAGE_NUMBER_OF_VALUES: 5 // Last 5 seconds to build average bandwidth
+    BANDWIDTH_AVERAGE_NUMBER_OF_VALUES: 5, // Last 5 seconds to build average bandwidth
+    USER_WATCHING_VIDEO_INTERVAL: 5000 // Every 5 seconds, notify the user is watching the video
   }
 
   private readonly webtorrent = new WebTorrent({
@@ -67,6 +68,7 @@ class PeerTubePlugin extends Plugin {
   private videoViewInterval
   private torrentInfoInterval
   private autoQualityInterval
+  private userWatchingVideoInterval
   private addTorrentDelay
   private qualityObservationTimer
   private runAutoQualitySchedulerTimer
@@ -100,6 +102,8 @@ class PeerTubePlugin extends Plugin {
       this.runTorrentInfoScheduler()
       this.runViewAdd()
 
+      if (options.userWatching) this.runUserWatchVideo(options.userWatching)
+
       this.player.one('play', () => {
         // Don't run immediately scheduler, wait some seconds the TCP connections are made
         this.runAutoQualitySchedulerTimer = setTimeout(() => this.runAutoQualityScheduler(), this.CONSTANTS.AUTO_QUALITY_SCHEDULER)
@@ -121,6 +125,8 @@ class PeerTubePlugin extends Plugin {
     clearInterval(this.torrentInfoInterval)
     clearInterval(this.autoQualityInterval)
 
+    if (this.userWatchingVideoInterval) clearInterval(this.userWatchingVideoInterval)
+
     // Don't need to destroy renderer, video player will be destroyed
     this.flushVideoFile(this.currentVideoFile, false)
 
@@ -524,6 +530,21 @@ class PeerTubePlugin extends Plugin {
     }, 1000)
   }
 
+  private runUserWatchVideo (options: UserWatching) {
+    let lastCurrentTime = 0
+
+    this.userWatchingVideoInterval = setInterval(() => {
+      const currentTime = Math.floor(this.player.currentTime())
+
+      if (currentTime - lastCurrentTime >= 1) {
+        lastCurrentTime = currentTime
+
+        this.notifyUserIsWatching(currentTime, options.url, options.authorizationHeader)
+          .catch(err => console.error('Cannot notify user is watching.', err))
+      }
+    }, this.CONSTANTS.USER_WATCHING_VIDEO_INTERVAL)
+  }
+
   private clearVideoViewInterval () {
     if (this.videoViewInterval !== undefined) {
       clearInterval(this.videoViewInterval)
@@ -537,6 +558,15 @@ class PeerTubePlugin extends Plugin {
     return fetch(this.videoViewUrl, { method: 'POST' })
   }
 
+  private notifyUserIsWatching (currentTime: number, url: string, authorizationHeader: string) {
+    const body = new URLSearchParams()
+    body.append('currentTime', currentTime.toString())
+
+    const headers = new Headers({ 'Authorization': authorizationHeader })
+
+    return fetch(url, { method: 'PUT', body, headers })
+  }
+
   private fallbackToHttp (done?: Function, play = true) {
     this.disableAutoResolution(true)
 
diff --git a/client/src/assets/player/peertube-videojs-typings.ts b/client/src/assets/player/peertube-videojs-typings.ts
index 993d5ee6b..b117007af 100644
--- a/client/src/assets/player/peertube-videojs-typings.ts
+++ b/client/src/assets/player/peertube-videojs-typings.ts
@@ -22,6 +22,11 @@ type VideoJSCaption = {
   src: string
 }
 
+type UserWatching = {
+  url: string,
+  authorizationHeader: string
+}
+
 type PeertubePluginOptions = {
   videoFiles: VideoFile[]
   playerElement: HTMLVideoElement
@@ -30,6 +35,8 @@ type PeertubePluginOptions = {
   startTime: number | string
   autoplay: boolean,
   videoCaptions: VideoJSCaption[]
+
+  userWatching?: UserWatching
 }
 
 // videojs typings don't have some method we need
@@ -39,5 +46,6 @@ export {
   VideoJSComponentInterface,
   PeertubePluginOptions,
   videojsUntyped,
-  VideoJSCaption
+  VideoJSCaption,
+  UserWatching
 }