Automatically remove bad followings

14 files changed, 300 insertions, 199 deletions

diff --git a/server/lib/activitypub/actor.ts b/server/lib/activitypub/actor.ts
index 38eb87d1e..0e6596f10 100644
--- a/server/lib/activitypub/actor.ts
+++ b/server/lib/activitypub/actor.ts
@@ -254,14 +254,14 @@ async function refreshActorIfNeeded (
       await actor.save({ transaction: t })
 
       if (actor.Account) {
-        actor.Account.set('name', result.name)
-        actor.Account.set('description', result.summary)
+        actor.Account.name = result.name
+        actor.Account.description = result.summary
 
         await actor.Account.save({ transaction: t })
       } else if (actor.VideoChannel) {
-        actor.VideoChannel.set('name', result.name)
-        actor.VideoChannel.set('description', result.summary)
-        actor.VideoChannel.set('support', result.support)
+        actor.VideoChannel.name = result.name
+        actor.VideoChannel.description = result.summary
+        actor.VideoChannel.support = result.support
 
         await actor.VideoChannel.save({ transaction: t })
       }
diff --git a/server/lib/activitypub/process/process-create.ts b/server/lib/activitypub/process/process-create.ts
index a979771b6..b81021163 100644
--- a/server/lib/activitypub/process/process-create.ts
+++ b/server/lib/activitypub/process/process-create.ts
@@ -4,7 +4,7 @@ import { retryTransactionWrapper } from '../../../helpers/database-utils'
 import { logger } from '../../../helpers/logger'
 import { sequelizeTypescript } from '../../../initializers'
 import { ActorModel } from '../../../models/activitypub/actor'
-import { addVideoComment, resolveThread } from '../video-comments'
+import { resolveThread } from '../video-comments'
 import { getOrCreateVideoAndAccountAndChannel } from '../videos'
 import { forwardVideoRelatedActivity } from '../send/utils'
 import { createOrUpdateCacheFile } from '../cache-file'
@@ -13,6 +13,7 @@ import { PlaylistObject } from '../../../../shared/models/activitypub/objects/pl
 import { createOrUpdateVideoPlaylist } from '../playlist'
 import { VideoModel } from '../../../models/video/video'
 import { APProcessorOptions } from '../../../typings/activitypub-processor.model'
+import { VideoCommentModel } from '../../../models/video/video-comment'
 
 async function processCreateActivity (options: APProcessorOptions<ActivityCreate>) {
   const { activity, byActor } = options
@@ -83,9 +84,13 @@ async function processCreateVideoComment (activity: ActivityCreate, byActor: Act
   if (!byAccount) throw new Error('Cannot create video comment with the non account actor ' + byActor.url)
 
   let video: VideoModel
+  let created: boolean
+  let comment: VideoCommentModel
   try {
-    const resolveThreadResult = await resolveThread(commentObject.inReplyTo)
+    const resolveThreadResult = await resolveThread({ url: commentObject.id, isVideo: false })
     video = resolveThreadResult.video
+    created = resolveThreadResult.commentCreated
+    comment = resolveThreadResult.comment
   } catch (err) {
     logger.debug(
       'Cannot process video comment because we could not resolve thread %s. Maybe it was not a video thread, so skip it.',
@@ -95,8 +100,6 @@ async function processCreateVideoComment (activity: ActivityCreate, byActor: Act
     return
   }
 
-  const { comment, created } = await addVideoComment(video, commentObject.id)
-
   if (video.isOwned() && created === true) {
     // Don't resend the activity to the sender
     const exceptions = [ byActor ]
diff --git a/server/lib/activitypub/video-comments.ts b/server/lib/activitypub/video-comments.ts
index 921abdb8d..92e1a9020 100644
--- a/server/lib/activitypub/video-comments.ts
+++ b/server/lib/activitypub/video-comments.ts
@@ -1,9 +1,7 @@
-import { VideoCommentObject } from '../../../shared/models/activitypub/objects/video-comment-object'
 import { sanitizeAndCheckVideoCommentObject } from '../../helpers/custom-validators/activitypub/video-comments'
 import { logger } from '../../helpers/logger'
 import { doRequest } from '../../helpers/requests'
 import { ACTIVITY_PUB, CRAWL_REQUEST_CONCURRENCY } from '../../initializers/constants'
-import { ActorModel } from '../../models/activitypub/actor'
 import { VideoModel } from '../../models/video/video'
 import { VideoCommentModel } from '../../models/video/video-comment'
 import { getOrCreateActorAndServerAndModel } from './actor'
@@ -11,79 +9,53 @@ import { getOrCreateVideoAndAccountAndChannel } from './videos'
 import * as Bluebird from 'bluebird'
 import { checkUrlsSameHost } from '../../helpers/activitypub'
 
-async function videoCommentActivityObjectToDBAttributes (video: VideoModel, actor: ActorModel, comment: VideoCommentObject) {
-  let originCommentId: number = null
-  let inReplyToCommentId: number = null
-
-  // If this is not a reply to the video (thread), create or get the parent comment
-  if (video.url !== comment.inReplyTo) {
-    const { comment: parent } = await addVideoComment(video, comment.inReplyTo)
-    if (!parent) {
-      logger.warn('Cannot fetch or get parent comment %s of comment %s.', comment.inReplyTo, comment.id)
-      return undefined
-    }
-
-    originCommentId = parent.originCommentId || parent.id
-    inReplyToCommentId = parent.id
-  }
-
-  return {
-    url: comment.id,
-    text: comment.content,
-    videoId: video.id,
-    accountId: actor.Account.id,
-    inReplyToCommentId,
-    originCommentId,
-    createdAt: new Date(comment.published)
-  }
+type ResolveThreadParams = {
+  url: string,
+  comments?: VideoCommentModel[],
+  isVideo?: boolean,
+  commentCreated?: boolean
 }
+type ResolveThreadResult = Promise<{ video: VideoModel, comment: VideoCommentModel, commentCreated: boolean }>
 
-async function addVideoComments (commentUrls: string[], instance: VideoModel) {
+async function addVideoComments (commentUrls: string[]) {
   return Bluebird.map(commentUrls, commentUrl => {
-    return addVideoComment(instance, commentUrl)
+    return resolveThread({ url: commentUrl, isVideo: false })
   }, { concurrency: CRAWL_REQUEST_CONCURRENCY })
 }
 
-async function addVideoComment (videoInstance: VideoModel, commentUrl: string) {
-  logger.info('Fetching remote video comment %s.', commentUrl)
+async function resolveThread (params: ResolveThreadParams): ResolveThreadResult {
+  const { url, isVideo } = params
+  if (params.commentCreated === undefined) params.commentCreated = false
+  if (params.comments === undefined) params.comments = []
 
-  const { body } = await doRequest({
-    uri: commentUrl,
-    json: true,
-    activityPub: true
-  })
-
-  if (sanitizeAndCheckVideoCommentObject(body) === false) {
-    logger.debug('Remote video comment JSON %s is not valid.', commentUrl, { body })
-    return { created: false }
+   // Already have this comment?
+  if (isVideo !== true) {
+    const result = await resolveCommentFromDB(params)
+    if (result) return result
   }
 
-  const actorUrl = body.attributedTo
-  if (!actorUrl) return { created: false }
+  try {
+    if (isVideo !== false) return await tryResolveThreadFromVideo(params)
 
-  if (checkUrlsSameHost(commentUrl, actorUrl) !== true) {
-    throw new Error(`Actor url ${actorUrl} has not the same host than the comment url ${commentUrl}`)
-  }
+    return resolveParentComment(params)
+  } catch (err) {
+    logger.debug('Cannot get or create account and video and channel for reply %s, fetch comment', url, { err })
 
-  if (checkUrlsSameHost(body.id, commentUrl) !== true) {
-    throw new Error(`Comment url ${commentUrl} host is different from the AP object id ${body.id}`)
+    return resolveParentComment(params)
   }
+}
 
-  const actor = await getOrCreateActorAndServerAndModel(actorUrl, 'all')
-  const entry = await videoCommentActivityObjectToDBAttributes(videoInstance, actor, body)
-  if (!entry) return { created: false }
+export {
+  addVideoComments,
+  resolveThread
+}
 
-  const [ comment, created ] = await VideoCommentModel.upsert<VideoCommentModel>(entry, { returning: true })
-  comment.Account = actor.Account
-  comment.Video = videoInstance
+// ---------------------------------------------------------------------------
 
-  return { comment, created }
-}
+async function resolveCommentFromDB (params: ResolveThreadParams) {
+  const { url, comments, commentCreated } = params
 
-type ResolveThreadResult = Promise<{ video: VideoModel, parents: VideoCommentModel[] }>
-async function resolveThread (url: string, comments: VideoCommentModel[] = []): ResolveThreadResult {
-   // Already have this comment?
-  const commentFromDatabase = await VideoCommentModel.loadByUrlAndPopulateReplyAndVideo(url)
+  const commentFromDatabase = await VideoCommentModel.loadByUrlAndPopulateReplyAndVideoUrlAndAccount(url)
   if (commentFromDatabase) {
     let parentComments = comments.concat([ commentFromDatabase ])
 
@@ -94,79 +66,97 @@ async function resolveThread (url: string, comments: VideoCommentModel[] = []):
       parentComments = parentComments.concat(data)
     }
 
-    return resolveThread(commentFromDatabase.Video.url, parentComments)
+    return resolveThread({
+      url: commentFromDatabase.Video.url,
+      comments: parentComments,
+      isVideo: true,
+      commentCreated
+    })
   }
 
-  try {
-    // Maybe it's a reply to a video?
-    // If yes, it's done: we resolved all the thread
-    const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: url })
-
-    if (comments.length !== 0) {
-      const firstReply = comments[ comments.length - 1 ]
-      firstReply.inReplyToCommentId = null
-      firstReply.originCommentId = null
-      firstReply.videoId = video.id
-      comments[comments.length - 1] = await firstReply.save()
-
-      for (let i = comments.length - 2; i >= 0; i--) {
-        const comment = comments[ i ]
-        comment.originCommentId = firstReply.id
-        comment.inReplyToCommentId = comments[ i + 1 ].id
-        comment.videoId = video.id
-
-        comments[i] = await comment.save()
-      }
+  return undefined
+}
+
+async function tryResolveThreadFromVideo (params: ResolveThreadParams) {
+  const { url, comments, commentCreated } = params
+
+  // Maybe it's a reply to a video?
+  // If yes, it's done: we resolved all the thread
+  const syncParam = { likes: true, dislikes: true, shares: true, comments: false, thumbnail: true, refreshVideo: false }
+  const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: url, syncParam })
+
+  let resultComment: VideoCommentModel
+  if (comments.length !== 0) {
+    const firstReply = comments[ comments.length - 1 ]
+    firstReply.inReplyToCommentId = null
+    firstReply.originCommentId = null
+    firstReply.videoId = video.id
+    firstReply.changed('updatedAt', true)
+    firstReply.Video = video
+
+    comments[comments.length - 1] = await firstReply.save()
+
+    for (let i = comments.length - 2; i >= 0; i--) {
+      const comment = comments[ i ]
+      comment.originCommentId = firstReply.id
+      comment.inReplyToCommentId = comments[ i + 1 ].id
+      comment.videoId = video.id
+      comment.changed('updatedAt', true)
+      comment.Video = video
+
+      comments[i] = await comment.save()
     }
 
-    return { video, parents: comments }
-  } catch (err) {
-    logger.debug('Cannot get or create account and video and channel for reply %s, fetch comment', url, { err })
+    resultComment = comments[0]
+  }
 
-    if (comments.length > ACTIVITY_PUB.MAX_RECURSION_COMMENTS) {
-      throw new Error('Recursion limit reached when resolving a thread')
-    }
+  return { video, comment: resultComment, commentCreated }
+}
 
-    const { body } = await doRequest({
-      uri: url,
-      json: true,
-      activityPub: true
-    })
+async function resolveParentComment (params: ResolveThreadParams) {
+  const { url, comments } = params
 
-    if (sanitizeAndCheckVideoCommentObject(body) === false) {
-      throw new Error('Remote video comment JSON is not valid:' + JSON.stringify(body))
-    }
+  if (comments.length > ACTIVITY_PUB.MAX_RECURSION_COMMENTS) {
+    throw new Error('Recursion limit reached when resolving a thread')
+  }
 
-    const actorUrl = body.attributedTo
-    if (!actorUrl) throw new Error('Miss attributed to in comment')
+  const { body } = await doRequest({
+    uri: url,
+    json: true,
+    activityPub: true
+  })
 
-    if (checkUrlsSameHost(url, actorUrl) !== true) {
-      throw new Error(`Actor url ${actorUrl} has not the same host than the comment url ${url}`)
-    }
+  if (sanitizeAndCheckVideoCommentObject(body) === false) {
+    throw new Error('Remote video comment JSON is not valid:' + JSON.stringify(body))
+  }
 
-    if (checkUrlsSameHost(body.id, url) !== true) {
-      throw new Error(`Comment url ${url} host is different from the AP object id ${body.id}`)
-    }
+  const actorUrl = body.attributedTo
+  if (!actorUrl) throw new Error('Miss attributed to in comment')
 
-    const actor = await getOrCreateActorAndServerAndModel(actorUrl)
-    const comment = new VideoCommentModel({
-      url: body.id,
-      text: body.content,
-      videoId: null,
-      accountId: actor.Account.id,
-      inReplyToCommentId: null,
-      originCommentId: null,
-      createdAt: new Date(body.published),
-      updatedAt: new Date(body.updated)
-    })
+  if (checkUrlsSameHost(url, actorUrl) !== true) {
+    throw new Error(`Actor url ${actorUrl} has not the same host than the comment url ${url}`)
+  }
 
-    return resolveThread(body.inReplyTo, comments.concat([ comment ]))
+  if (checkUrlsSameHost(body.id, url) !== true) {
+    throw new Error(`Comment url ${url} host is different from the AP object id ${body.id}`)
   }
-}
 
-export {
-  videoCommentActivityObjectToDBAttributes,
-  addVideoComments,
-  addVideoComment,
-  resolveThread
+  const actor = await getOrCreateActorAndServerAndModel(actorUrl)
+  const comment = new VideoCommentModel({
+    url: body.id,
+    text: body.content,
+    videoId: null,
+    accountId: actor.Account.id,
+    inReplyToCommentId: null,
+    originCommentId: null,
+    createdAt: new Date(body.published),
+    updatedAt: new Date(body.updated)
+  })
+  comment.Account = actor.Account
+
+  return resolveThread({
+    url: body.inReplyTo,
+    comments: comments.concat([ comment ]),
+    commentCreated: true
+  })
 }
diff --git a/server/lib/activitypub/videos.ts b/server/lib/activitypub/videos.ts
index d7bc3d650..2102702e1 100644
--- a/server/lib/activitypub/videos.ts
+++ b/server/lib/activitypub/videos.ts
@@ -56,6 +56,7 @@ import { join } from 'path'
 import { FilteredModelAttributes } from '../../typings/sequelize'
 import { Hooks } from '../plugins/hooks'
 import { autoBlacklistVideoIfNeeded } from '../video-blacklist'
+import { ActorFollowScoreCache } from '../files-cache'
 
 async function federateVideoIfNeeded (video: VideoModel, isNewVideo: boolean, transaction?: sequelize.Transaction) {
   if (
@@ -182,7 +183,7 @@ async function syncVideoExternalAttributes (video: VideoModel, fetchedVideo: Vid
   }
 
   if (syncParam.comments === true) {
-    const handler = items => addVideoComments(items, video)
+    const handler = items => addVideoComments(items)
     const cleaner = crawlStartDate => VideoCommentModel.cleanOldCommentsOf(video.id, crawlStartDate)
 
     await crawlCollectionPage<string>(fetchedVideo.comments, handler, cleaner)
@@ -421,10 +422,14 @@ async function refreshVideoIfNeeded (options: {
     await retryTransactionWrapper(updateVideoFromAP, updateOptions)
     await syncVideoExternalAttributes(video, videoObject, options.syncParam)
 
+    ActorFollowScoreCache.Instance.addGoodServerId(video.VideoChannel.Actor.serverId)
+
     return video
   } catch (err) {
     logger.warn('Cannot refresh video %s.', options.video.url, { err })
 
+    ActorFollowScoreCache.Instance.addBadServerId(video.VideoChannel.Actor.serverId)
+
     // Don't refresh in loop
     await video.setAsRefreshed()
     return video
@@ -500,7 +505,7 @@ async function createVideo (videoObject: VideoTorrentObject, channelActor: Actor
 
     const videoStreamingPlaylists = streamingPlaylistActivityUrlToDBAttributes(videoCreated, videoObject, videoFiles)
     const playlistPromises = videoStreamingPlaylists.map(p => VideoStreamingPlaylistModel.create(p, { transaction: t }))
-    await Promise.all(playlistPromises)
+    const streamingPlaylists = await Promise.all(playlistPromises)
 
     // Process tags
     const tags = videoObject.tag
@@ -513,7 +518,12 @@ async function createVideo (videoObject: VideoTorrentObject, channelActor: Actor
     const videoCaptionsPromises = videoObject.subtitleLanguage.map(c => {
       return VideoCaptionModel.insertOrReplaceLanguage(videoCreated.id, c.identifier, t)
     })
-    await Promise.all(videoCaptionsPromises)
+    const captions = await Promise.all(videoCaptionsPromises)
+
+    video.VideoFiles = videoFiles
+    video.VideoStreamingPlaylists = streamingPlaylists
+    video.Tags = tagInstances
+    video.VideoCaptions = captions
 
     const autoBlacklisted = await autoBlacklistVideoIfNeeded({
       video,
diff --git a/server/lib/files-cache/actor-follow-score-cache.ts b/server/lib/files-cache/actor-follow-score-cache.ts
index 5f8ee806f..086605726 100644
--- a/server/lib/files-cache/actor-follow-score-cache.ts
+++ b/server/lib/files-cache/actor-follow-score-cache.ts
@@ -7,6 +7,8 @@ class ActorFollowScoreCache {
 
   private static instance: ActorFollowScoreCache
   private pendingFollowsScore: { [ url: string ]: number } = {}
+  private pendingBadServer = new Set<number>()
+  private pendingGoodServer = new Set<number>()
 
   private constructor () {}
 
@@ -32,7 +34,31 @@ class ActorFollowScoreCache {
     }
   }
 
-  getPendingFollowsScoreCopy () {
+  addBadServerId (serverId: number) {
+    this.pendingBadServer.add(serverId)
+  }
+
+  getBadFollowingServerIds () {
+    return Array.from(this.pendingBadServer)
+  }
+
+  clearBadFollowingServerIds () {
+    this.pendingBadServer = new Set<number>()
+  }
+
+  addGoodServerId (serverId: number) {
+    this.pendingGoodServer.add(serverId)
+  }
+
+  getGoodFollowingServerIds () {
+    return Array.from(this.pendingGoodServer)
+  }
+
+  clearGoodFollowingServerIds () {
+    this.pendingGoodServer = new Set<number>()
+  }
+
+  getPendingFollowsScore () {
     return this.pendingFollowsScore
   }
 
diff --git a/server/lib/job-queue/handlers/activitypub-http-fetcher.ts b/server/lib/job-queue/handlers/activitypub-http-fetcher.ts
index 4da645f07..c3f59dc77 100644
--- a/server/lib/job-queue/handlers/activitypub-http-fetcher.ts
+++ b/server/lib/job-queue/handlers/activitypub-http-fetcher.ts
@@ -37,7 +37,7 @@ async function processActivityPubHttpFetcher (job: Bull.Job) {
     'video-likes': items => createRates(items, video, 'like'),
     'video-dislikes': items => createRates(items, video, 'dislike'),
     'video-shares': items => addVideoShares(items, video),
-    'video-comments': items => addVideoComments(items, video),
+    'video-comments': items => addVideoComments(items),
     'account-playlists': items => createAccountPlaylists(items, account)
   }
 
diff --git a/server/lib/schedulers/actor-follow-scheduler.ts b/server/lib/schedulers/actor-follow-scheduler.ts
index fdd3ad5fa..598c0211f 100644
--- a/server/lib/schedulers/actor-follow-scheduler.ts
+++ b/server/lib/schedulers/actor-follow-scheduler.ts
@@ -2,7 +2,7 @@ import { isTestInstance } from '../../helpers/core-utils'
 import { logger } from '../../helpers/logger'
 import { ActorFollowModel } from '../../models/activitypub/actor-follow'
 import { AbstractScheduler } from './abstract-scheduler'
-import { SCHEDULER_INTERVALS_MS } from '../../initializers/constants'
+import { ACTOR_FOLLOW_SCORE, SCHEDULER_INTERVALS_MS } from '../../initializers/constants'
 import { ActorFollowScoreCache } from '../files-cache'
 
 export class ActorFollowScheduler extends AbstractScheduler {
@@ -22,13 +22,20 @@ export class ActorFollowScheduler extends AbstractScheduler {
   }
 
   private async processPendingScores () {
-    const pendingScores = ActorFollowScoreCache.Instance.getPendingFollowsScoreCopy()
+    const pendingScores = ActorFollowScoreCache.Instance.getPendingFollowsScore()
+    const badServerIds = ActorFollowScoreCache.Instance.getBadFollowingServerIds()
+    const goodServerIds = ActorFollowScoreCache.Instance.getGoodFollowingServerIds()
 
     ActorFollowScoreCache.Instance.clearPendingFollowsScore()
+    ActorFollowScoreCache.Instance.clearBadFollowingServerIds()
+    ActorFollowScoreCache.Instance.clearGoodFollowingServerIds()
 
     for (const inbox of Object.keys(pendingScores)) {
-      await ActorFollowModel.updateFollowScore(inbox, pendingScores[inbox])
+      await ActorFollowModel.updateScore(inbox, pendingScores[inbox])
     }
+
+    await ActorFollowModel.updateScoreByFollowingServers(badServerIds, ACTOR_FOLLOW_SCORE.PENALTY)
+    await ActorFollowModel.updateScoreByFollowingServers(goodServerIds, ACTOR_FOLLOW_SCORE.BONUS)
   }
 
   private async removeBadActorFollows () {
diff --git a/server/models/account/account-video-rate.ts b/server/models/account/account-video-rate.ts
index d5c214ecb..4bd8114cf 100644
--- a/server/models/account/account-video-rate.ts
+++ b/server/models/account/account-video-rate.ts
@@ -6,7 +6,7 @@ import { CONSTRAINTS_FIELDS, VIDEO_RATE_TYPES } from '../../initializers/constan
 import { VideoModel } from '../video/video'
 import { AccountModel } from './account'
 import { ActorModel } from '../activitypub/actor'
-import { getSort, throwIfNotValid } from '../utils'
+import { buildLocalAccountIdsIn, getSort, throwIfNotValid } from '../utils'
 import { isActivityPubUrlValid } from '../../helpers/custom-validators/activitypub/misc'
 import { AccountVideoRate } from '../../../shared'
 import { ScopeNames as VideoChannelScopeNames, SummaryOptions, VideoChannelModel } from '../video/video-channel'
@@ -219,25 +219,11 @@ export class AccountVideoRateModel extends Model<AccountVideoRateModel> {
             [Op.lt]: beforeUpdatedAt
           },
           videoId,
-          type
-        },
-        include: [
-          {
-            model: AccountModel.unscoped(),
-            required: true,
-            include: [
-              {
-                model: ActorModel.unscoped(),
-                required: true,
-                where: {
-                  serverId: {
-                    [Op.ne]: null
-                  }
-                }
-              }
-            ]
+          type,
+          accountId: {
+            [Op.notIn]: buildLocalAccountIdsIn()
           }
-        ],
+        },
         transaction: t
       }
 
diff --git a/server/models/activitypub/actor-follow.ts b/server/models/activitypub/actor-follow.ts
index 3039b90c7..99a5fd117 100644
--- a/server/models/activitypub/actor-follow.ts
+++ b/server/models/activitypub/actor-follow.ts
@@ -23,7 +23,7 @@ import { logger } from '../../helpers/logger'
 import { getServerActor } from '../../helpers/utils'
 import { ACTOR_FOLLOW_SCORE, FOLLOW_STATES } from '../../initializers/constants'
 import { ServerModel } from '../server/server'
-import { getSort } from '../utils'
+import { createSafeIn, getSort } from '../utils'
 import { ActorModel, unusedActorAttributesForAPI } from './actor'
 import { VideoChannelModel } from '../video/video-channel'
 import { AccountModel } from '../account/account'
@@ -464,7 +464,7 @@ export class ActorFollowModel extends Model<ActorFollowModel> {
     }
   }
 
-  static updateFollowScore (inboxUrl: string, value: number, t?: Transaction) {
+  static updateScore (inboxUrl: string, value: number, t?: Transaction) {
     const query = `UPDATE "actorFollow" SET "score" = LEAST("score" + ${value}, ${ACTOR_FOLLOW_SCORE.MAX}) ` +
       'WHERE id IN (' +
         'SELECT "actorFollow"."id" FROM "actorFollow" ' +
@@ -480,6 +480,28 @@ export class ActorFollowModel extends Model<ActorFollowModel> {
     return ActorFollowModel.sequelize.query(query, options)
   }
 
+  static async updateScoreByFollowingServers (serverIds: number[], value: number, t?: Transaction) {
+    if (serverIds.length === 0) return
+
+    const me = await getServerActor()
+    const serverIdsString = createSafeIn(ActorFollowModel, serverIds)
+
+    const query = `UPDATE "actorFollow" SET "score" = "score" + ${value} ` +
+      'WHERE id IN (' +
+        'SELECT "actorFollow"."id" FROM "actorFollow" ' +
+        'INNER JOIN "actor" ON "actor"."id" = "actorFollow"."targetActorId" ' +
+        `WHERE "actorFollow"."actorId" = ${me.Account.actorId} ` + // I'm the follower
+        `AND "actor"."serverId" IN (${serverIdsString})` + // Criteria on followings
+      ')'
+
+    const options = {
+      type: QueryTypes.BULKUPDATE,
+      transaction: t
+    }
+
+    return ActorFollowModel.sequelize.query(query, options)
+  }
+
   private static async createListAcceptedFollowForApiQuery (
     type: 'followers' | 'following',
     actorIds: number[],
diff --git a/server/models/utils.ts b/server/models/utils.ts
index 30de91e1d..24890f961 100644
--- a/server/models/utils.ts
+++ b/server/models/utils.ts
@@ -1,7 +1,7 @@
 import { Model, Sequelize } from 'sequelize-typescript'
 import * as validator from 'validator'
 import { Col } from 'sequelize/types/lib/utils'
-import { OrderItem } from 'sequelize/types'
+import { OrderItem, literal } from 'sequelize'
 
 type SortType = { sortModel: any, sortValue: string }
 
@@ -129,16 +129,30 @@ function parseAggregateResult (result: any) {
   return total
 }
 
-const createSafeIn = (model: typeof Model, stringArr: string[]) => {
-  return stringArr.map(t => model.sequelize.escape(t))
+const createSafeIn = (model: typeof Model, stringArr: (string | number)[]) => {
+  return stringArr.map(t => model.sequelize.escape('' + t))
                   .join(', ')
 }
 
+function buildLocalAccountIdsIn () {
+  return literal(
+    '(SELECT "account"."id" FROM "account" INNER JOIN "actor" ON "actor"."id" = "account"."actorId" AND "actor"."serverId" IS NULL)'
+  )
+}
+
+function buildLocalActorIdsIn () {
+  return literal(
+    '(SELECT "actor"."id" FROM "actor" WHERE "actor"."serverId" IS NULL)'
+  )
+}
+
 // ---------------------------------------------------------------------------
 
 export {
   buildBlockedAccountSQL,
+  buildLocalActorIdsIn,
   SortType,
+  buildLocalAccountIdsIn,
   getSort,
   getVideoSort,
   getSortOnModel,
diff --git a/server/models/video/video-comment.ts b/server/models/video/video-comment.ts
index 28e5818cd..6eda32f05 100644
--- a/server/models/video/video-comment.ts
+++ b/server/models/video/video-comment.ts
@@ -22,7 +22,7 @@ import { AccountModel } from '../account/account'
 import { ActorModel } from '../activitypub/actor'
 import { AvatarModel } from '../avatar/avatar'
 import { ServerModel } from '../server/server'
-import { buildBlockedAccountSQL, getSort, throwIfNotValid } from '../utils'
+import { buildBlockedAccountSQL, buildLocalAccountIdsIn, getSort, throwIfNotValid } from '../utils'
 import { VideoModel } from './video'
 import { VideoChannelModel } from './video-channel'
 import { getServerActor } from '../../helpers/utils'
@@ -30,7 +30,7 @@ import { UserModel } from '../account/user'
 import { actorNameAlphabet } from '../../helpers/custom-validators/activitypub/actor'
 import { regexpCapture } from '../../helpers/regexp'
 import { uniq } from 'lodash'
-import { FindOptions, Op, Order, ScopeOptions, Sequelize, Transaction } from 'sequelize'
+import { FindOptions, literal, Op, Order, ScopeOptions, Sequelize, Transaction } from 'sequelize'
 
 enum ScopeNames {
   WITH_ACCOUNT = 'WITH_ACCOUNT',
@@ -281,16 +281,22 @@ export class VideoCommentModel extends Model<VideoCommentModel> {
     return VideoCommentModel.scope([ ScopeNames.WITH_ACCOUNT ]).findOne(query)
   }
 
-  static loadByUrlAndPopulateReplyAndVideo (url: string, t?: Transaction) {
+  static loadByUrlAndPopulateReplyAndVideoUrlAndAccount (url: string, t?: Transaction) {
     const query: FindOptions = {
       where: {
         url
-      }
+      },
+      include: [
+        {
+          attributes: [ 'id', 'url' ],
+          model: VideoModel.unscoped()
+        }
+      ]
     }
 
     if (t !== undefined) query.transaction = t
 
-    return VideoCommentModel.scope([ ScopeNames.WITH_IN_REPLY_TO, ScopeNames.WITH_VIDEO ]).findOne(query)
+    return VideoCommentModel.scope([ ScopeNames.WITH_IN_REPLY_TO, ScopeNames.WITH_ACCOUNT ]).findOne(query)
   }
 
   static async listThreadsForApi (parameters: {
@@ -471,25 +477,11 @@ export class VideoCommentModel extends Model<VideoCommentModel> {
         updatedAt: {
           [Op.lt]: beforeUpdatedAt
         },
-        videoId
-      },
-      include: [
-        {
-          required: true,
-          model: AccountModel.unscoped(),
-          include: [
-            {
-              required: true,
-              model: ActorModel.unscoped(),
-              where: {
-                serverId: {
-                  [Op.ne]: null
-                }
-              }
-            }
-          ]
+        videoId,
+        accountId: {
+          [Op.notIn]: buildLocalAccountIdsIn()
         }
-      ]
+      }
     }
 
     return VideoCommentModel.destroy(query)
diff --git a/server/models/video/video-share.ts b/server/models/video/video-share.ts
index 3bab3c027..d8ed64557 100644
--- a/server/models/video/video-share.ts
+++ b/server/models/video/video-share.ts
@@ -4,7 +4,7 @@ import { isActivityPubUrlValid } from '../../helpers/custom-validators/activityp
 import { CONSTRAINTS_FIELDS } from '../../initializers/constants'
 import { AccountModel } from '../account/account'
 import { ActorModel } from '../activitypub/actor'
-import { throwIfNotValid } from '../utils'
+import { buildLocalActorIdsIn, throwIfNotValid } from '../utils'
 import { VideoModel } from './video'
 import { VideoChannelModel } from './video-channel'
 import { Op, Transaction } from 'sequelize'
@@ -207,19 +207,11 @@ export class VideoShareModel extends Model<VideoShareModel> {
         updatedAt: {
           [Op.lt]: beforeUpdatedAt
         },
-        videoId
-      },
-      include: [
-        {
-          model: ActorModel.unscoped(),
-          required: true,
-          where: {
-            serverId: {
-              [ Op.ne ]: null
-            }
-          }
+        videoId,
+        actorId: {
+          [Op.notIn]: buildLocalActorIdsIn()
         }
-      ]
+      }
     }
 
     return VideoShareModel.destroy(query)
diff --git a/server/tests/api/server/handle-down.ts b/server/tests/api/server/handle-down.ts
index a225443c5..420289bf4 100644
--- a/server/tests/api/server/handle-down.ts
+++ b/server/tests/api/server/handle-down.ts
@@ -19,8 +19,9 @@ import {
   setAccessTokensToServers,
   unfollow,
   updateVideo,
-  uploadVideo,
-  wait
+  uploadVideo, uploadVideoAndGetId,
+  wait,
+  setActorFollowScores, closeAllSequelize
 } from '../../../../shared/extra-utils'
 import { follow, getFollowersListPaginationAndSort } from '../../../../shared/extra-utils/server/follows'
 import { getJobsListPaginationAndSort, waitJobs } from '../../../../shared/extra-utils/server/jobs'
@@ -43,6 +44,8 @@ describe('Test handle downs', function () {
   let missedVideo2: Video
   let unlistedVideo: Video
 
+  let videoIdsServer1: number[] = []
+
   const videoAttributes = {
     name: 'my super name for server 1',
     category: 5,
@@ -299,7 +302,54 @@ describe('Test handle downs', function () {
     }
   })
 
+  it('Should upload many videos on server 1', async function () {
+    this.timeout(120000)
+
+    for (let i = 0; i < 10; i++) {
+      const uuid = (await uploadVideoAndGetId({ server: servers[ 0 ], videoName: 'video ' + i })).uuid
+      videoIdsServer1.push(uuid)
+    }
+
+    await waitJobs(servers)
+
+    for (const id of videoIdsServer1) {
+      await getVideo(servers[ 1 ].url, id)
+    }
+
+    await waitJobs(servers)
+    await setActorFollowScores(servers[1].internalServerNumber, 20)
+
+    // Wait video expiration
+    await wait(11000)
+
+    // Refresh video -> score + 10 = 30
+    await getVideo(servers[1].url, videoIdsServer1[0])
+
+    await waitJobs(servers)
+  })
+
+  it('Should remove followings that are down', async function () {
+    this.timeout(120000)
+
+    killallServers([ servers[0] ])
+
+    // Wait video expiration
+    await wait(11000)
+
+    for (let i = 0; i < 3; i++) {
+      await getVideo(servers[1].url, videoIdsServer1[i])
+      await wait(1000)
+      await waitJobs([ servers[1] ])
+    }
+
+    for (const id of videoIdsServer1) {
+      await getVideo(servers[1].url, id, 403)
+    }
+  })
+
   after(async function () {
+    await closeAllSequelize([ servers[1] ])
+
     await cleanupTests(servers)
   })
 })
diff --git a/shared/extra-utils/miscs/sql.ts b/shared/extra-utils/miscs/sql.ts
index dfe840d8c..167649c6d 100644
--- a/shared/extra-utils/miscs/sql.ts
+++ b/shared/extra-utils/miscs/sql.ts
@@ -80,11 +80,20 @@ function setPluginVersion (internalServerNumber: number, pluginName: string, new
   return seq.query(`UPDATE "plugin" SET "version" = '${newVersion}' WHERE "name" = '${pluginName}'`, options)
 }
 
+function setActorFollowScores (internalServerNumber: number, newScore: number) {
+  const seq = getSequelize(internalServerNumber)
+
+  const options = { type: QueryTypes.UPDATE }
+
+  return seq.query(`UPDATE "actorFollow" SET "score" = ${newScore}`, options)
+}
+
 export {
   setVideoField,
   setPlaylistField,
   setActorField,
   countVideoViewsOf,
   setPluginVersion,
+  setActorFollowScores,
   closeAllSequelize
 }