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 { 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 import { sendDislike } from './send/send-dislike'
  16
  17 async function createRates (ratesUrl: string[], video: VideoModel, rate: VideoRateType) {
  18   let rateCounts = 0
  19
  20   await Bluebird.map(ratesUrl, async rateUrl => {
  21     try {
  22       // Fetch url
  23       const { body } = await doRequest({
  24         uri: rateUrl,
  25         json: true,
  26         activityPub: true
  27       })
  28       if (!body || !body.actor) throw new Error('Body or body actor is invalid')
  29
  30       const actorUrl = getAPId(body.actor)
  31       if (checkUrlsSameHost(actorUrl, rateUrl) !== true) {
  32         throw new Error(`Rate url ${rateUrl} has not the same host than actor url ${actorUrl}`)
  33       }
  34
  35       if (checkUrlsSameHost(body.id, rateUrl) !== true) {
  36         throw new Error(`Rate url ${rateUrl} host is different from the AP object id ${body.id}`)
  37       }
  38
  39       const actor = await getOrCreateActorAndServerAndModel(actorUrl)
  40
  41       const [ , created ] = await AccountVideoRateModel
  42         .findOrCreate({
  43           where: {
  44             videoId: video.id,
  45             accountId: actor.Account.id
  46           },
  47           defaults: {
  48             videoId: video.id,
  49             accountId: actor.Account.id,
  50             type: rate,
  51             url: body.id
  52           }
  53         })
  54
  55       if (created) rateCounts += 1
  56     } catch (err) {
  57       logger.warn('Cannot add rate %s.', rateUrl, { err })
  58     }
  59   }, { concurrency: CRAWL_REQUEST_CONCURRENCY })
  60
  61   logger.info('Adding %d %s to video %s.', rateCounts, rate, video.uuid)
  62
  63   // This is "likes" and "dislikes"
  64   if (rateCounts !== 0) await video.increment(rate + 's', { by: rateCounts })
  65
  66   return
  67 }
  68
  69 async function sendVideoRateChange (account: AccountModel,
  70                               video: VideoModel,
  71                               likes: number,
  72                               dislikes: number,
  73                               t: Transaction) {
  74   const actor = account.Actor
  75
  76   // Keep the order: first we undo and then we create
  77
  78   // Undo Like
  79   if (likes < 0) await sendUndoLike(actor, video, t)
  80   // Undo Dislike
  81   if (dislikes < 0) await sendUndoDislike(actor, video, t)
  82
  83   // Like
  84   if (likes > 0) await sendLike(actor, video, t)
  85   // Dislike
  86   if (dislikes > 0) await sendDislike(actor, video, t)
  87 }
  88
  89 function getRateUrl (rateType: VideoRateType, actor: ActorModel, video: VideoModel) {
  90   return rateType === 'like' ? getVideoLikeActivityPubUrl(actor, video) : getVideoDislikeActivityPubUrl(actor, video)
  91 }
  92
  93 export {
  94   getRateUrl,
  95   createRates,
  96   sendVideoRateChange
  97 }