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 { getOrCreateActorAndServerAndModel } from '../actor'
   7 import { forwardActivity } from '../send/utils'
   8 import { getOrCreateAccountAndVideoAndChannel } from '../videos'
   9
  10 async function processLikeActivity (activity: ActivityLike) {
  11   const actor = await getOrCreateActorAndServerAndModel(activity.actor)
  12
  13   return processLikeVideo(actor, activity)
  14 }
  15
  16 // ---------------------------------------------------------------------------
  17
  18 export {
  19   processLikeActivity
  20 }
  21
  22 // ---------------------------------------------------------------------------
  23
  24 async function processLikeVideo (actor: ActorModel, activity: ActivityLike) {
  25   const options = {
  26     arguments: [ actor, activity ],
  27     errorMessage: 'Cannot like the video with many retries.'
  28   }
  29
  30   return retryTransactionWrapper(createVideoLike, options)
  31 }
  32
  33 async function createVideoLike (byActor: ActorModel, activity: ActivityLike) {
  34   const videoUrl = activity.object
  35
  36   const byAccount = byActor.Account
  37   if (!byAccount) throw new Error('Cannot create like with the non account actor ' + byActor.url)
  38
  39   const { video } = await getOrCreateAccountAndVideoAndChannel(videoUrl)
  40
  41   return sequelizeTypescript.transaction(async t => {
  42     const rate = {
  43       type: 'like' as 'like',
  44       videoId: video.id,
  45       accountId: byAccount.id
  46     }
  47     const [ , created ] = await AccountVideoRateModel.findOrCreate({
  48       where: rate,
  49       defaults: rate,
  50       transaction: t
  51     })
  52     if (created === true) await video.increment('likes', { transaction: t })
  53
  54     if (video.isOwned() && created === true) {
  55       // Don't resend the activity to the sender
  56       const exceptions = [ byActor ]
  57       await forwardActivity(activity, t, exceptions)
  58     }
  59   })
  60 }