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

   1 import { ActivityLike } from '../../../../shared/models/activitypub'
   2 import { retryTransactionWrapper } from '../../../helpers/database-utils'
   3 import { sequelizeTypescript } from '../../../initializers'
   4 import { AccountVideoRateModel } from '../../../models/account/account-video-rate'
   5 import { ActorModel } from '../../../models/activitypub/actor'
   6 import { forwardVideoRelatedActivity } from '../send/utils'
   7 import { getOrCreateVideoAndAccountAndChannel } from '../videos'
   8 import { getVideoLikeActivityPubUrl } from '../url'
   9 import { getAPId } from '../../../helpers/activitypub'
  10
  11 async function processLikeActivity (activity: ActivityLike, byActor: ActorModel) {
  12   return retryTransactionWrapper(processLikeVideo, byActor, activity)
  13 }
  14
  15 // ---------------------------------------------------------------------------
  16
  17 export {
  18   processLikeActivity
  19 }
  20
  21 // ---------------------------------------------------------------------------
  22
  23 async function processLikeVideo (byActor: ActorModel, activity: ActivityLike) {
  24   const videoUrl = getAPId(activity.object)
  25
  26   const byAccount = byActor.Account
  27   if (!byAccount) throw new Error('Cannot create like with the non account actor ' + byActor.url)
  28
  29   const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: videoUrl })
  30
  31   return sequelizeTypescript.transaction(async t => {
  32     const url = getVideoLikeActivityPubUrl(byActor, video)
  33
  34     const existingRate = await AccountVideoRateModel.loadByAccountAndVideoOrUrl(byAccount.id, video.id, url)
  35     if (existingRate && existingRate.type === 'like') return
  36
  37     await AccountVideoRateModel.create({
  38       type: 'like' as 'like',
  39       videoId: video.id,
  40       accountId: byAccount.id,
  41       url
  42     }, { transaction: t })
  43
  44     await video.increment('likes', { transaction: t })
  45
  46     if (existingRate && existingRate.type === 'dislike') {
  47       await video.decrement('dislikes', { transaction: t })
  48     }
  49
  50     if (video.isOwned()) {
  51       // Don't resend the activity to the sender
  52       const exceptions = [ byActor ]
  53
  54       await forwardVideoRelatedActivity(activity, t, exceptions, video)
  55     }
  56   })
  57 }