+
+async function processUndoLike (actorUrl: string, activity: ActivityUndo) {
+ const likeActivity = activity.object as ActivityLike
+
+ const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: likeActivity.object })
+
+ return sequelizeTypescript.transaction(async t => {
+ const byAccount = await AccountModel.loadByUrl(actorUrl, t)
+ if (!byAccount) throw new Error('Unknown account ' + actorUrl)
+
+ const rate = await AccountVideoRateModel.load(byAccount.id, video.id, t)
+ if (!rate) throw new Error(`Unknown rate by account ${byAccount.id} for video ${video.id}.`)
+
+ await rate.destroy({ transaction: t })
+ await video.decrement('likes', { transaction: t })
+
+ if (video.isOwned()) {
+ // Don't resend the activity to the sender
+ const exceptions = [ byAccount.Actor ]
+
+ await forwardVideoRelatedActivity(activity, t, exceptions, video)
+ }
+ })
+}
+
+async function processUndoDislike (actorUrl: string, activity: ActivityUndo) {
+ const dislike = activity.object.object as DislikeObject
+
+ const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: dislike.object })
+
+ return sequelizeTypescript.transaction(async t => {
+ const byAccount = await AccountModel.loadByUrl(actorUrl, t)
+ if (!byAccount) throw new Error('Unknown account ' + actorUrl)
+
+ const rate = await AccountVideoRateModel.load(byAccount.id, video.id, t)
+ if (!rate) throw new Error(`Unknown rate by account ${byAccount.id} for video ${video.id}.`)
+
+ await rate.destroy({ transaction: t })
+ await video.decrement('dislikes', { transaction: t })
+
+ if (video.isOwned()) {
+ // Don't resend the activity to the sender
+ const exceptions = [ byAccount.Actor ]
+
+ await forwardVideoRelatedActivity(activity, t, exceptions, video)
+ }
+ })
+}
+
+async function processUndoCacheFile (byActor: ActorModel, activity: ActivityUndo) {
+ const cacheFileObject = activity.object.object as CacheFileObject
+
+ const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: cacheFileObject.object })
+
+ return sequelizeTypescript.transaction(async t => {
+ const cacheFile = await VideoRedundancyModel.loadByUrl(cacheFileObject.id)
+ if (!cacheFile) throw new Error('Unknown video cache ' + cacheFile.url)
+
+ await cacheFile.destroy()
+
+ if (video.isOwned()) {
+ // Don't resend the activity to the sender
+ const exceptions = [ byActor ]
+
+ await forwardVideoRelatedActivity(activity, t, exceptions, video)
+ }
+ })
+}
+
+function processUndoFollow (follower: ActorModel, followActivity: ActivityFollow) {
+ return sequelizeTypescript.transaction(async t => {
+ const following = await ActorModel.loadByUrlAndPopulateAccountAndChannel(followActivity.object, t)
+ const actorFollow = await ActorFollowModel.loadByActorAndTarget(follower.id, following.id, t)
+
+ if (!actorFollow) throw new Error(`'Unknown actor follow ${follower.id} -> ${following.id}.`)
+
+ await actorFollow.destroy({ transaction: t })
+
+ return undefined
+ })
+}
+
+function processUndoAnnounce (byActor: ActorModel, announceActivity: ActivityAnnounce) {
+ return sequelizeTypescript.transaction(async t => {
+ const share = await VideoShareModel.loadByUrl(announceActivity.id, t)
+ if (!share) throw new Error(`Unknown video share ${announceActivity.id}.`)
+
+ if (share.actorId !== byActor.id) throw new Error(`${share.url} is not shared by ${byActor.url}.`)
+
+ await share.destroy({ transaction: t })
+
+ if (share.Video.isOwned()) {
+ // Don't resend the activity to the sender
+ const exceptions = [ byActor ]
+
+ await forwardVideoRelatedActivity(announceActivity, t, exceptions, share.Video)
+ }
+ })
+}