server/lib/activitypub/process/process-follow.ts

   1 import { ActivityFollow } from '../../../../shared/models/activitypub'
   2 import { retryTransactionWrapper } from '../../../helpers/database-utils'
   3 import { logger } from '../../../helpers/logger'
   4 import { sequelizeTypescript } from '../../../initializers'
   5 import { ActorModel } from '../../../models/activitypub/actor'
   6 import { ActorFollowModel } from '../../../models/activitypub/actor-follow'
   7 import { sendAccept } from '../send'
   8 import { Notifier } from '../../notifier'
   9
  10 async function processFollowActivity (activity: ActivityFollow, byActor: ActorModel) {
  11   const activityObject = activity.object
  12
  13   return retryTransactionWrapper(processFollow, byActor, activityObject)
  14 }
  15
  16 // ---------------------------------------------------------------------------
  17
  18 export {
  19   processFollowActivity
  20 }
  21
  22 // ---------------------------------------------------------------------------
  23
  24 async function processFollow (actor: ActorModel, targetActorURL: string) {
  25   const { actorFollow, created } = await sequelizeTypescript.transaction(async t => {
  26     const targetActor = await ActorModel.loadByUrlAndPopulateAccountAndChannel(targetActorURL, t)
  27
  28     if (!targetActor) throw new Error('Unknown actor')
  29     if (targetActor.isOwned() === false) throw new Error('This is not a local actor.')
  30
  31     const [ actorFollow, created ] = await ActorFollowModel.findOrCreate({
  32       where: {
  33         actorId: actor.id,
  34         targetActorId: targetActor.id
  35       },
  36       defaults: {
  37         actorId: actor.id,
  38         targetActorId: targetActor.id,
  39         state: 'accepted'
  40       },
  41       transaction: t
  42     })
  43
  44     actorFollow.ActorFollower = actor
  45     actorFollow.ActorFollowing = targetActor
  46
  47     if (actorFollow.state !== 'accepted') {
  48       actorFollow.state = 'accepted'
  49       await actorFollow.save({ transaction: t })
  50     }
  51
  52     actorFollow.ActorFollower = actor
  53     actorFollow.ActorFollowing = targetActor
  54
  55     // Target sends to actor he accepted the follow request
  56     await sendAccept(actorFollow)
  57
  58     return { actorFollow, created }
  59   })
  60
  61   if (created) Notifier.Instance.notifyOfNewFollow(actorFollow)
  62
  63   logger.info('Actor %s is followed by actor %s.', targetActorURL, actor.url)
  64 }