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

   1 import { VideoModel } from '@server/models/video/video'
   2 import { ActivityCreate, ActivityDislike, DislikeObject } from '@shared/models'
   3 import { retryTransactionWrapper } from '../../../helpers/database-utils'
   4 import { sequelizeTypescript } from '../../../initializers/database'
   5 import { AccountVideoRateModel } from '../../../models/account/account-video-rate'
   6 import { APProcessorOptions } from '../../../types/activitypub-processor.model'
   7 import { MActorSignature } from '../../../types/models'
   8 import { federateVideoIfNeeded, getOrCreateAPVideo } from '../videos'
   9
  10 async function processDislikeActivity (options: APProcessorOptions<ActivityCreate | ActivityDislike>) {
  11   const { activity, byActor } = options
  12   return retryTransactionWrapper(processDislike, activity, byActor)
  13 }
  14
  15 // ---------------------------------------------------------------------------
  16
  17 export {
  18   processDislikeActivity
  19 }
  20
  21 // ---------------------------------------------------------------------------
  22
  23 async function processDislike (activity: ActivityCreate | ActivityDislike, byActor: MActorSignature) {
  24   const dislikeObject = activity.type === 'Dislike'
  25     ? activity.object
  26     : (activity.object as DislikeObject).object
  27
  28   const byAccount = byActor.Account
  29
  30   if (!byAccount) throw new Error('Cannot create dislike with the non account actor ' + byActor.url)
  31
  32   const { video: onlyVideo } = await getOrCreateAPVideo({ videoObject: dislikeObject, fetchType: 'only-video' })
  33
  34   // We don't care about dislikes of remote videos
  35   if (!onlyVideo.isOwned()) return
  36
  37   return sequelizeTypescript.transaction(async t => {
  38     const video = await VideoModel.loadFull(onlyVideo.id, t)
  39
  40     const existingRate = await AccountVideoRateModel.loadByAccountAndVideoOrUrl(byAccount.id, video.id, activity.id, t)
  41     if (existingRate && existingRate.type === 'dislike') return
  42
  43     await video.increment('dislikes', { transaction: t })
  44     video.dislikes++
  45
  46     if (existingRate && existingRate.type === 'like') {
  47       await video.decrement('likes', { transaction: t })
  48       video.likes--
  49     }
  50
  51     const rate = existingRate || new AccountVideoRateModel()
  52     rate.type = 'dislike'
  53     rate.videoId = video.id
  54     rate.accountId = byAccount.id
  55     rate.url = activity.id
  56
  57     await rate.save({ transaction: t })
  58
  59     await federateVideoIfNeeded(video, false, t)
  60   })
  61 }