Add ability to remove an instance follower in API

server/lib/activitypub/send/send-reject.ts

@@ -0,0 +1,44 @@
+import { ActivityFollow, ActivityReject } from '../../../../shared/models/activitypub'
+import { ActorModel } from '../../../models/activitypub/actor'
+import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
+import { getActorFollowAcceptActivityPubUrl, getActorFollowActivityPubUrl } from '../url'
+import { unicastTo } from './utils'
+import { buildFollowActivity } from './send-follow'
+import { logger } from '../../../helpers/logger'
+
+async function sendReject (actorFollow: ActorFollowModel) {
+  const follower = actorFollow.ActorFollower
+  const me = actorFollow.ActorFollowing
+
+  if (!follower.serverId) { // This should never happen
+    logger.warn('Do not sending reject to local follower.')
+    return
+  }
+
+  logger.info('Creating job to reject follower %s.', follower.url)
+
+  const followUrl = getActorFollowActivityPubUrl(actorFollow)
+  const followData = buildFollowActivity(followUrl, follower, me)
+
+  const url = getActorFollowAcceptActivityPubUrl(actorFollow)
+  const data = buildRejectActivity(url, me, followData)
+
+  return unicastTo(data, me, follower.inboxUrl)
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  sendReject
+}
+
+// ---------------------------------------------------------------------------
+
+function buildRejectActivity (url: string, byActor: ActorModel, followActivityData: ActivityFollow): ActivityReject {
+  return {
+    type: 'Reject',
+    id: url,
+    actor: byActor.url,
+    object: followActivityData
+  }
+}