2 files changed, 64 insertions, 23 deletions

diff --git a/server/lib/activitypub/send/misc.ts b/server/lib/activitypub/send/misc.ts
index 4aa514c15..2a9f4cae8 100644
--- a/server/lib/activitypub/send/misc.ts
+++ b/server/lib/activitypub/send/misc.ts
@@ -12,12 +12,13 @@ import { activitypubHttpJobScheduler, ActivityPubHttpPayload } from '../../jobs/
 async function forwardActivity (
   activity: Activity,
   t: Transaction,
-  followersException: ActorModel[] = []
+  followersException: ActorModel[] = [],
+  additionalFollowerUrls: string[] = []
 ) {
   const to = activity.to || []
   const cc = activity.cc || []
 
-  const followersUrls: string[] = []
+  const followersUrls = additionalFollowerUrls
   for (const dest of to.concat(cc)) {
     if (dest.endsWith('/followers')) {
       followersUrls.push(dest)
@@ -47,13 +48,25 @@ async function broadcastToFollowers (
   byActor: ActorModel,
   toActorFollowers: ActorModel[],
   t: Transaction,
-  followersException: ActorModel[] = []
+  actorsException: ActorModel[] = []
 ) {
-  const uris = await computeFollowerUris(toActorFollowers, followersException, t)
-  if (uris.length === 0) {
-    logger.info('0 followers for %s, no broadcasting.', toActorFollowers.map(a => a.id).join(', '))
-    return undefined
-  }
+  const uris = await computeFollowerUris(toActorFollowers, actorsException, t)
+  return broadcastTo(uris, data, byActor, t)
+}
+
+async function broadcastToActors (
+  data: any,
+  byActor: ActorModel,
+  toActors: ActorModel[],
+  t: Transaction,
+  actorsException: ActorModel[] = []
+) {
+  const uris = await computeUris(toActors, actorsException)
+  return broadcastTo(uris, data, byActor, t)
+}
+
+async function broadcastTo (uris: string[], data: any, byActor: ActorModel, t: Transaction) {
+  if (uris.length === 0) return undefined
 
   logger.debug('Creating broadcast job.', { uris })
 
@@ -149,12 +162,20 @@ function audiencify (object: any, audience: ActivityAudience) {
   return Object.assign(object, audience)
 }
 
-async function computeFollowerUris (toActorFollower: ActorModel[], followersException: ActorModel[], t: Transaction) {
+async function computeFollowerUris (toActorFollower: ActorModel[], actorsException: ActorModel[], t: Transaction) {
   const toActorFollowerIds = toActorFollower.map(a => a.id)
 
   const result = await ActorFollowModel.listAcceptedFollowerSharedInboxUrls(toActorFollowerIds, t)
-  const followersSharedInboxException = followersException.map(f => f.sharedInboxUrl)
-  return result.data.filter(sharedInbox => followersSharedInboxException.indexOf(sharedInbox) === -1)
+  const sharedInboxesException = actorsException.map(f => f.sharedInboxUrl)
+  return result.data.filter(sharedInbox => sharedInboxesException.indexOf(sharedInbox) === -1)
+}
+
+async function computeUris (toActors: ActorModel[], actorsException: ActorModel[] = []) {
+  const toActorSharedInboxesSet = new Set(toActors.map(a => a.sharedInboxUrl))
+
+  const sharedInboxesException = actorsException.map(f => f.sharedInboxUrl)
+  return Array.from(toActorSharedInboxesSet)
+    .filter(sharedInbox => sharedInboxesException.indexOf(sharedInbox) === -1)
 }
 
 // ---------------------------------------------------------------------------
@@ -168,5 +189,7 @@ export {
   getObjectFollowersAudience,
   forwardActivity,
   audiencify,
-  getOriginVideoCommentAudience
+  getOriginVideoCommentAudience,
+  computeUris,
+  broadcastToActors
 }
diff --git a/server/lib/activitypub/send/send-create.ts b/server/lib/activitypub/send/send-create.ts
index e2ee639d9..9db663be1 100644
--- a/server/lib/activitypub/send/send-create.ts
+++ b/server/lib/activitypub/send/send-create.ts
@@ -8,7 +8,7 @@ import { VideoAbuseModel } from '../../../models/video/video-abuse'
 import { VideoCommentModel } from '../../../models/video/video-comment'
 import { getVideoAbuseActivityPubUrl, getVideoDislikeActivityPubUrl, getVideoViewActivityPubUrl } from '../url'
 import {
-  audiencify, broadcastToFollowers, getActorsInvolvedInVideo, getAudience, getObjectFollowersAudience,
+  audiencify, broadcastToActors, broadcastToFollowers, getActorsInvolvedInVideo, getAudience, getObjectFollowersAudience,
   getOriginVideoAudience, getOriginVideoCommentAudience,
   unicastTo
 } from './misc'
@@ -39,11 +39,20 @@ async function sendCreateVideoCommentToOrigin (comment: VideoCommentModel, t: Tr
   const threadParentComments = await VideoCommentModel.listThreadParentComments(comment, t)
   const commentObject = comment.toActivityPubObject(threadParentComments)
 
-  const actorsInvolvedInVideo = await getActorsInvolvedInVideo(comment.Video, t)
-  const audience = getOriginVideoCommentAudience(comment, threadParentComments, actorsInvolvedInVideo)
+  const actorsInvolvedInComment = await getActorsInvolvedInVideo(comment.Video, t)
+  actorsInvolvedInComment.push(byActor)
+  const audience = getOriginVideoCommentAudience(comment, threadParentComments, actorsInvolvedInComment)
 
   const data = await createActivityData(comment.url, byActor, commentObject, t, audience)
 
+  // This was a reply, send it to the parent actors
+  const actorsException = [ byActor ]
+  await broadcastToActors(data, byActor, threadParentComments.map(c => c.Account.Actor), t, actorsException)
+
+  // Broadcast to our followers
+  await broadcastToFollowers(data, byActor, [ byActor ], t)
+
+  // Send to origin
   return unicastTo(data, byActor, comment.Video.VideoChannel.Account.Actor.sharedInboxUrl, t)
 }
 
@@ -52,12 +61,21 @@ async function sendCreateVideoCommentToVideoFollowers (comment: VideoCommentMode
   const threadParentComments = await VideoCommentModel.listThreadParentComments(comment, t)
   const commentObject = comment.toActivityPubObject(threadParentComments)
 
-  const actorsInvolvedInVideo = await getActorsInvolvedInVideo(comment.Video, t)
-  const audience = getOriginVideoCommentAudience(comment, threadParentComments, actorsInvolvedInVideo)
+  const actorsInvolvedInComment = await getActorsInvolvedInVideo(comment.Video, t)
+  actorsInvolvedInComment.push(byActor)
+
+  const audience = getOriginVideoCommentAudience(comment, threadParentComments, actorsInvolvedInComment)
   const data = await createActivityData(comment.url, byActor, commentObject, t, audience)
 
-  const followersException = [ byActor ]
-  return broadcastToFollowers(data, byActor, actorsInvolvedInVideo, t, followersException)
+  // This was a reply, send it to the parent actors
+  const actorsException = [ byActor ]
+  await broadcastToActors(data, byActor, threadParentComments.map(c => c.Account.Actor), t, actorsException)
+
+  // Broadcast to our followers
+  await broadcastToFollowers(data, byActor, [ byActor ], t)
+
+  // Send to actors involved in the comment
+  return broadcastToFollowers(data, byActor, actorsInvolvedInComment, t, actorsException)
 }
 
 async function sendCreateViewToOrigin (byActor: ActorModel, video: VideoModel, t: Transaction) {
@@ -81,8 +99,8 @@ async function sendCreateViewToVideoFollowers (byActor: ActorModel, video: Video
 
   // Use the server actor to send the view
   const serverActor = await getServerActor()
-  const followersException = [ byActor ]
-  return broadcastToFollowers(data, serverActor, actorsToForwardView, t, followersException)
+  const actorsException = [ byActor ]
+  return broadcastToFollowers(data, serverActor, actorsToForwardView, t, actorsException)
 }
 
 async function sendCreateDislikeToOrigin (byActor: ActorModel, video: VideoModel, t: Transaction) {
@@ -104,8 +122,8 @@ async function sendCreateDislikeToVideoFollowers (byActor: ActorModel, video: Vi
   const audience = getObjectFollowersAudience(actorsToForwardView)
   const data = await createActivityData(url, byActor, dislikeActivityData, t, audience)
 
-  const followersException = [ byActor ]
-  return broadcastToFollowers(data, byActor, actorsToForwardView, t, followersException)
+  const actorsException = [ byActor ]
+  return broadcastToFollowers(data, byActor, actorsToForwardView, t, actorsException)
 }
 
 async function createActivityData (