server/lib/activitypub/video-rates.ts

   1 import { Transaction } from 'sequelize'
   2 import { AccountModel } from '../../models/account/account'
   3 import { VideoModel } from '../../models/video/video'
   4 import { sendCreateDislike, sendLike, sendUndoDislike, sendUndoLike } from './send'
   5 import { VideoRateType } from '../../../shared/models/videos'
   6 import * as Bluebird from 'bluebird'
   7 import { getOrCreateActorAndServerAndModel } from './actor'
   8 import { AccountVideoRateModel } from '../../models/account/account-video-rate'
   9 import { logger } from '../../helpers/logger'
  10 import { CRAWL_REQUEST_CONCURRENCY } from '../../initializers'
  11 import { doRequest } from '../../helpers/requests'
  12 import { checkUrlsSameHost, getAPId } from '../../helpers/activitypub'
  13 import { ActorModel } from '../../models/activitypub/actor'
  14 import { getVideoDislikeActivityPubUrl, getVideoLikeActivityPubUrl } from './url'
  15
  16 async function createRates (ratesUrl: string[], video: VideoModel, rate: VideoRateType) {
  17   let rateCounts = 0
  18
  19   await Bluebird.map(ratesUrl, async rateUrl => {
  20     try {
  21       // Fetch url
  22       const { body } = await doRequest({
  23         uri: rateUrl,
  24         json: true,
  25         activityPub: true
  26       })
  27       if (!body || !body.actor) throw new Error('Body or body actor is invalid')
  28
  29       const actorUrl = getAPId(body.actor)
  30       if (checkUrlsSameHost(actorUrl, rateUrl) !== true) {
  31         throw new Error(`Rate url ${rateUrl} has not the same host than actor url ${actorUrl}`)
  32       }
  33
  34       if (checkUrlsSameHost(body.id, rateUrl) !== true) {
  35         throw new Error(`Rate url ${rateUrl} host is different from the AP object id ${body.id}`)
  36       }
  37
  38       const actor = await getOrCreateActorAndServerAndModel(actorUrl)
  39
  40       const [ , created ] = await AccountVideoRateModel
  41         .findOrCreate({
  42           where: {
  43             videoId: video.id,
  44             accountId: actor.Account.id
  45           },
  46           defaults: {
  47             videoId: video.id,
  48             accountId: actor.Account.id,
  49             type: rate,
  50             url: body.id
  51           }
  52         })
  53
  54       if (created) rateCounts += 1
  55     } catch (err) {
  56       logger.warn('Cannot add rate %s.', rateUrl, { err })
  57     }
  58   }, { concurrency: CRAWL_REQUEST_CONCURRENCY })
  59
  60   logger.info('Adding %d %s to video %s.', rateCounts, rate, video.uuid)
  61
  62   // This is "likes" and "dislikes"
  63   if (rateCounts !== 0) await video.increment(rate + 's', { by: rateCounts })
  64
  65   return
  66 }
  67
  68 async function sendVideoRateChange (account: AccountModel,
  69                               video: VideoModel,
  70                               likes: number,
  71                               dislikes: number,
  72                               t: Transaction) {
  73   const actor = account.Actor
  74
  75   // Keep the order: first we undo and then we create
  76
  77   // Undo Like
  78   if (likes < 0) await sendUndoLike(actor, video, t)
  79   // Undo Dislike
  80   if (dislikes < 0) await sendUndoDislike(actor, video, t)
  81
  82   // Like
  83   if (likes > 0) await sendLike(actor, video, t)
  84   // Dislike
  85   if (dislikes > 0) await sendCreateDislike(actor, video, t)
  86 }
  87
  88 function getRateUrl (rateType: VideoRateType, actor: ActorModel, video: VideoModel) {
  89   return rateType === 'like' ? getVideoLikeActivityPubUrl(actor, video) : getVideoDislikeActivityPubUrl(actor, video)
  90 }
  91
  92 export {
  93   getRateUrl,
  94   createRates,
  95   sendVideoRateChange
  96 }