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/database'
   4 import { AccountVideoRateModel } from '../../../models/account/account-video-rate'
   5 import { forwardVideoRelatedActivity } from '../send/utils'
   6 import { getOrCreateVideoAndAccountAndChannel } from '../videos'
   7 import { getVideoLikeActivityPubUrl } from '../url'
   8 import { getAPId } from '../../../helpers/activitypub'
   9 import { APProcessorOptions } from '../../../types/activitypub-processor.model'
  10 import { MActorSignature } from '../../../types/models'
  11
  12 async function processLikeActivity (options: APProcessorOptions<ActivityLike>) {
  13   const { activity, byActor } = options
  14   return retryTransactionWrapper(processLikeVideo, byActor, activity)
  15 }
  16
  17 // ---------------------------------------------------------------------------
  18
  19 export {
  20   processLikeActivity
  21 }
  22
  23 // ---------------------------------------------------------------------------
  24
  25 async function processLikeVideo (byActor: MActorSignature, activity: ActivityLike) {
  26   const videoUrl = getAPId(activity.object)
  27
  28   const byAccount = byActor.Account
  29   if (!byAccount) throw new Error('Cannot create like with the non account actor ' + byActor.url)
  30
  31   const { video } = await getOrCreateVideoAndAccountAndChannel({ videoObject: videoUrl })
  32
  33   return sequelizeTypescript.transaction(async t => {
  34     const url = getVideoLikeActivityPubUrl(byActor, video)
  35
  36     const existingRate = await AccountVideoRateModel.loadByAccountAndVideoOrUrl(byAccount.id, video.id, url)
  37     if (existingRate && existingRate.type === 'like') return
  38
  39     if (existingRate && existingRate.type === 'dislike') {
  40       await video.decrement('dislikes', { transaction: t })
  41     }
  42
  43     await video.increment('likes', { transaction: t })
  44
  45     const rate = existingRate || new AccountVideoRateModel()
  46     rate.type = 'like'
  47     rate.videoId = video.id
  48     rate.accountId = byAccount.id
  49     rate.url = url
  50
  51     await rate.save({ transaction: t })
  52
  53     if (video.isOwned()) {
  54       // Don't resend the activity to the sender
  55       const exceptions = [ byActor ]
  56
  57       await forwardVideoRelatedActivity(activity, t, exceptions, video)
  58     }
  59   })
  60 }