Support video views/viewers stats in server

 * Add "currentTime" and "event" body params to view endpoint
 * Merge watching and view endpoints
 * Introduce WatchAction AP activity
 * Add tables to store viewer information of local videos
 * Add endpoints to fetch video views/viewers stats of local videos
 * Refactor views/viewers handlers
 * Support "views" and "viewers" counters for both VOD and live videos

2 files changed, 22 insertions, 3 deletions

diff --git a/server/lib/activitypub/process/process-create.ts b/server/lib/activitypub/process/process-create.ts
index b5b1a0feb..3e7931bb2 100644
--- a/server/lib/activitypub/process/process-create.ts
+++ b/server/lib/activitypub/process/process-create.ts
@@ -1,6 +1,7 @@
 import { isBlockedByServerOrAccount } from '@server/lib/blocklist'
 import { isRedundancyAccepted } from '@server/lib/redundancy'
-import { ActivityCreate, CacheFileObject, PlaylistObject, VideoCommentObject, VideoObject } from '@shared/models'
+import { VideoModel } from '@server/models/video/video'
+import { ActivityCreate, CacheFileObject, PlaylistObject, VideoCommentObject, VideoObject, WatchActionObject } from '@shared/models'
 import { retryTransactionWrapper } from '../../../helpers/database-utils'
 import { logger } from '../../../helpers/logger'
 import { sequelizeTypescript } from '../../../initializers/database'
@@ -8,6 +9,7 @@ import { APProcessorOptions } from '../../../types/activitypub-processor.model'
 import { MActorSignature, MCommentOwnerVideo, MVideoAccountLightBlacklistAllFiles } from '../../../types/models'
 import { Notifier } from '../../notifier'
 import { createOrUpdateCacheFile } from '../cache-file'
+import { createOrUpdateLocalVideoViewer } from '../local-video-viewer'
 import { createOrUpdateVideoPlaylist } from '../playlists'
 import { forwardVideoRelatedActivity } from '../send/shared/send-utils'
 import { resolveThread } from '../video-comments'
@@ -32,6 +34,10 @@ async function processCreateActivity (options: APProcessorOptions<ActivityCreate
     return retryTransactionWrapper(processCreateVideoComment, activity, byActor, notify)
   }
 
+  if (activityType === 'WatchAction') {
+    return retryTransactionWrapper(processCreateWatchAction, activity)
+  }
+
   if (activityType === 'CacheFile') {
     return retryTransactionWrapper(processCreateCacheFile, activity, byActor)
   }
@@ -81,6 +87,19 @@ async function processCreateCacheFile (activity: ActivityCreate, byActor: MActor
   }
 }
 
+async function processCreateWatchAction (activity: ActivityCreate) {
+  const watchAction = activity.object as WatchActionObject
+
+  if (watchAction.actionStatus !== 'CompletedActionStatus') return
+
+  const video = await VideoModel.loadByUrl(watchAction.object)
+  if (video.remote) return
+
+  await sequelizeTypescript.transaction(async t => {
+    return createOrUpdateLocalVideoViewer(watchAction, video, t)
+  })
+}
+
 async function processCreateVideoComment (activity: ActivityCreate, byActor: MActorSignature, notify: boolean) {
   const commentObject = activity.object as VideoCommentObject
   const byAccount = byActor.Account
diff --git a/server/lib/activitypub/process/process-view.ts b/server/lib/activitypub/process/process-view.ts
index c59940164..bad079843 100644
--- a/server/lib/activitypub/process/process-view.ts
+++ b/server/lib/activitypub/process/process-view.ts
@@ -1,4 +1,4 @@
-import { VideoViews } from '@server/lib/video-views'
+import { VideoViewsManager } from '@server/lib/views/video-views-manager'
 import { ActivityView } from '../../../../shared/models/activitypub'
 import { APProcessorOptions } from '../../../types/activitypub-processor.model'
 import { MActorSignature } from '../../../types/models'
@@ -32,7 +32,7 @@ async function processCreateView (activity: ActivityView, byActor: MActorSignatu
     ? new Date(activity.expires)
     : undefined
 
-  await VideoViews.Instance.processView({ video, ip: null, viewerExpires })
+  await VideoViewsManager.Instance.processRemoteView({ video, viewerExpires })
 
   if (video.isOwned()) {
     // Forward the view but don't resend the activity to the sender