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

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