9 files changed, 114 insertions, 25 deletions

diff --git a/client/src/app/+videos/+video-watch/video-watch.component.ts b/client/src/app/+videos/+video-watch/video-watch.component.ts
index 33de901c0..7eb56eb48 100644
--- a/client/src/app/+videos/+video-watch/video-watch.component.ts
+++ b/client/src/app/+videos/+video-watch/video-watch.component.ts
@@ -25,6 +25,7 @@ import { VideoActionsDisplayType, VideoDownloadComponent } from '@app/shared/sha
 import { VideoPlaylist, VideoPlaylistService } from '@app/shared/shared-video-playlist'
 import { MetaService } from '@ngx-meta/core'
 import { peertubeLocalStorage } from '@root-helpers/peertube-web-storage'
+import { HttpStatusCode } from '@shared/core-utils/miscs/http-error-codes'
 import { ServerConfig, ServerErrorCode, UserVideoRateType, VideoCaption, VideoPrivacy, VideoState } from '@shared/models'
 import { getStoredP2PEnabled, getStoredTheater } from '../../../assets/player/peertube-player-local-storage'
 import {
@@ -39,7 +40,6 @@ import { isWebRTCDisabled, timeToInt } from '../../../assets/player/utils'
 import { environment } from '../../../environments/environment'
 import { VideoSupportComponent } from './modal/video-support.component'
 import { VideoWatchPlaylistComponent } from './video-watch-playlist.component'
-import { HttpStatusCode } from '@shared/core-utils/miscs/http-error-codes'
 
 type URLOptions = CustomizationOptions & { playerMode: PlayerMode }
 
@@ -866,21 +866,7 @@ export class VideoWatchComponent implements OnInit, OnDestroy {
 
   private async subscribeToLiveEventsIfNeeded (oldVideo: VideoDetails, newVideo: VideoDetails) {
     if (!this.liveVideosSub) {
-      this.liveVideosSub = this.peertubeSocket.getLiveVideosObservable()
-        .subscribe(({ payload }) => {
-          if (payload.state !== VideoState.PUBLISHED) return
-
-          const videoState = this.video.state.id
-          if (videoState !== VideoState.WAITING_FOR_LIVE && videoState !== VideoState.LIVE_ENDED) return
-
-          console.log('Loading video after live update.')
-
-          const videoUUID = this.video.uuid
-
-          // Reset to refetch the video
-          this.video = undefined
-          this.loadVideo(videoUUID)
-        })
+      this.liveVideosSub = this.buildLiveEventsSubscription()
     }
 
     if (oldVideo && oldVideo.id !== newVideo.id) {
@@ -892,6 +878,38 @@ export class VideoWatchComponent implements OnInit, OnDestroy {
     await this.peertubeSocket.subscribeToLiveVideosSocket(newVideo.id)
   }
 
+  private buildLiveEventsSubscription () {
+    return this.peertubeSocket.getLiveVideosObservable()
+      .subscribe(({ type, payload }) => {
+        if (type === 'state-change') return this.handleLiveStateChange(payload.state)
+        if (type === 'views-change') return this.handleLiveViewsChange(payload.views)
+      })
+  }
+
+  private handleLiveStateChange (newState: VideoState) {
+    if (newState !== VideoState.PUBLISHED) return
+
+    const videoState = this.video.state.id
+    if (videoState !== VideoState.WAITING_FOR_LIVE && videoState !== VideoState.LIVE_ENDED) return
+
+    console.log('Loading video after live update.')
+
+    const videoUUID = this.video.uuid
+
+    // Reset to refetch the video
+    this.video = undefined
+    this.loadVideo(videoUUID)
+  }
+
+  private handleLiveViewsChange (newViews: number) {
+    if (!this.video) {
+      console.error('Cannot update video live views because video is no defined.')
+      return
+    }
+
+    this.video.views = newViews
+  }
+
   private initHotkeys () {
     this.hotkeys = [
       // These hotkeys are managed by the player
diff --git a/client/src/app/core/notification/peertube-socket.service.ts b/client/src/app/core/notification/peertube-socket.service.ts
index 7e1c43364..089276cfc 100644
--- a/client/src/app/core/notification/peertube-socket.service.ts
+++ b/client/src/app/core/notification/peertube-socket.service.ts
@@ -73,8 +73,11 @@ export class PeerTubeSocket {
       this.liveVideosSocket = this.io(environment.apiUrl + '/live-videos')
     })
 
-    const type: LiveVideoEventType = 'state-change'
-    this.liveVideosSocket.on(type, (payload: LiveVideoEventPayload) => this.dispatchLiveVideoEvent(type, payload))
+    const types: LiveVideoEventType[] = [ 'views-change', 'state-change' ]
+
+    for (const type of types) {
+      this.liveVideosSocket.on(type, (payload: LiveVideoEventPayload) => this.dispatchLiveVideoEvent(type, payload))
+    }
   }
 
   private async importIOIfNeeded () {
diff --git a/server/lib/activitypub/videos.ts b/server/lib/activitypub/videos.ts
index cb462e258..8545e5bad 100644
--- a/server/lib/activitypub/videos.ts
+++ b/server/lib/activitypub/videos.ts
@@ -461,8 +461,13 @@ async function updateVideoFromAP (options: {
       transaction: undefined
     })
 
-    if (wasPrivateVideo || wasUnlistedVideo) Notifier.Instance.notifyOnNewVideoIfNeeded(videoUpdated) // Notify our users?
-    if (videoUpdated.isLive) PeerTubeSocket.Instance.sendVideoLiveNewState(videoUpdated)
+    // Notify our users?
+    if (wasPrivateVideo || wasUnlistedVideo) Notifier.Instance.notifyOnNewVideoIfNeeded(videoUpdated)
+
+    if (videoUpdated.isLive) {
+      PeerTubeSocket.Instance.sendVideoLiveNewState(videoUpdated)
+      PeerTubeSocket.Instance.sendVideoViewsUpdate(videoUpdated)
+    }
 
     logger.info('Remote video with uuid %s updated', videoObject.uuid)
 
diff --git a/server/lib/job-queue/handlers/video-live-ending.ts b/server/lib/job-queue/handlers/video-live-ending.ts
index 93d925830..8018e2277 100644
--- a/server/lib/job-queue/handlers/video-live-ending.ts
+++ b/server/lib/job-queue/handlers/video-live-ending.ts
@@ -91,7 +91,7 @@ async function saveLive (video: MVideo, live: MVideoLive) {
   await VideoFileModel.removeHLSFilesOfVideoId(hlsPlaylist.id)
   hlsPlaylist.VideoFiles = []
 
-  let durationDone: boolean
+  let durationDone = false
 
   for (const playlistFile of playlistFiles) {
     const concatenatedTsFile = LiveManager.Instance.buildConcatenatedName(playlistFile)
diff --git a/server/lib/live-manager.ts b/server/lib/live-manager.ts
index 5d9b68756..2fb4b774c 100644
--- a/server/lib/live-manager.ts
+++ b/server/lib/live-manager.ts
@@ -537,6 +537,8 @@ class LiveManager {
 
       await federateVideoIfNeeded(video, false)
 
+      PeerTubeSocket.Instance.sendVideoViewsUpdate(video)
+
       // Only keep not expired watchers
       const newWatchers = watchers.filter(w => w > notBefore)
       this.watchersPerVideo.set(videoId, newWatchers)
diff --git a/server/lib/peertube-socket.ts b/server/lib/peertube-socket.ts
index 5fc5bc20b..e27963e60 100644
--- a/server/lib/peertube-socket.ts
+++ b/server/lib/peertube-socket.ts
@@ -69,7 +69,18 @@ class PeerTubeSocket {
     const data: LiveVideoEventPayload = { state: video.state }
     const type: LiveVideoEventType = 'state-change'
 
-    logger.debug('Sending video live new state notification of %s.', video.url)
+    logger.debug('Sending video live new state notification of %s.', video.url, { state: video.state })
+
+    this.liveVideosNamespace
+      .in(video.id)
+      .emit(type, data)
+  }
+
+  sendVideoViewsUpdate (video: MVideo) {
+    const data: LiveVideoEventPayload = { views: video.views }
+    const type: LiveVideoEventType = 'views-change'
+
+    logger.debug('Sending video live views update notification of %s.', video.url, { views: video.views })
 
     this.liveVideosNamespace
       .in(video.id)
diff --git a/server/tests/api/live/live.ts b/server/tests/api/live/live.ts
index e728fcce0..6d504f742 100644
--- a/server/tests/api/live/live.ts
+++ b/server/tests/api/live/live.ts
@@ -328,7 +328,7 @@ describe('Test live', function () {
         await checkResolutionsInMasterPlaylist(hlsPlaylist.playlistUrl, resolutions)
 
         for (let i = 0; i < resolutions.length; i++) {
-          const segmentNum = 2
+          const segmentNum = 3
           const segmentName = `${i}-00000${segmentNum}.ts`
           await waitUntilLiveSegmentGeneration(servers[0], video.uuid, i, segmentNum)
 
@@ -608,6 +608,55 @@ describe('Test live', function () {
       }
     })
 
+    it('Should correctly send views change notification', async function () {
+      this.timeout(60000)
+
+      let localLastVideoViews = 0
+      let remoteLastVideoViews = 0
+
+      const liveVideoUUID = await createLiveWrapper()
+      await waitJobs(servers)
+
+      {
+        const videoId = await getVideoIdFromUUID(servers[0].url, liveVideoUUID)
+
+        const localSocket = getLiveNotificationSocket(servers[0].url)
+        localSocket.on('views-change', data => { localLastVideoViews = data.views })
+        localSocket.emit('subscribe', { videoId })
+      }
+
+      {
+        const videoId = await getVideoIdFromUUID(servers[1].url, liveVideoUUID)
+
+        const remoteSocket = getLiveNotificationSocket(servers[1].url)
+        remoteSocket.on('views-change', data => { remoteLastVideoViews = data.views })
+        remoteSocket.emit('subscribe', { videoId })
+      }
+
+      const command = await sendRTMPStreamInVideo(servers[0].url, servers[0].accessToken, liveVideoUUID)
+
+      for (const server of servers) {
+        await waitUntilLivePublished(server.url, server.accessToken, liveVideoUUID)
+      }
+
+      await waitJobs(servers)
+
+      expect(localLastVideoViews).to.equal(0)
+      expect(remoteLastVideoViews).to.equal(0)
+
+      await viewVideo(servers[0].url, liveVideoUUID)
+      await viewVideo(servers[1].url, liveVideoUUID)
+
+      await waitJobs(servers)
+      await wait(5000)
+      await waitJobs(servers)
+
+      expect(localLastVideoViews).to.equal(2)
+      expect(remoteLastVideoViews).to.equal(2)
+
+      await stopFfmpeg(command)
+    })
+
     it('Should not receive a notification after unsubscribe', async function () {
       this.timeout(60000)
 
diff --git a/shared/models/videos/live/live-video-event-payload.model.ts b/shared/models/videos/live/live-video-event-payload.model.ts
index f9038f4de..6cd7540e8 100644
--- a/shared/models/videos/live/live-video-event-payload.model.ts
+++ b/shared/models/videos/live/live-video-event-payload.model.ts
@@ -1,5 +1,6 @@
 import { VideoState } from '../video-state.enum'
 
 export interface LiveVideoEventPayload {
-  state: VideoState
+  state?: VideoState
+  views?: number
 }
diff --git a/shared/models/videos/live/live-video-event.type.ts b/shared/models/videos/live/live-video-event.type.ts
index 4d15899da..50f794561 100644
--- a/shared/models/videos/live/live-video-event.type.ts
+++ b/shared/models/videos/live/live-video-event.type.ts
@@ -1 +1 @@
-export type LiveVideoEventType = 'state-change'
+export type LiveVideoEventType = 'state-change' | 'views-change'