server/controllers/api/videos/rate.ts

   1 import * as express from 'express'
   2 import { UserVideoRateUpdate } from '../../../../shared'
   3 import { logger, retryTransactionWrapper } from '../../../helpers'
   4 import { sequelizeTypescript, VIDEO_RATE_TYPES } from '../../../initializers'
   5 import { sendVideoRateChangeToFollowers, sendVideoRateChangeToOrigin } from '../../../lib/activitypub'
   6 import { asyncMiddleware, authenticate, videoRateValidator } from '../../../middlewares'
   7 import { AccountModel } from '../../../models/account/account'
   8 import { AccountVideoRateModel } from '../../../models/account/account-video-rate'
   9 import { VideoModel } from '../../../models/video/video'
  10
  11 const rateVideoRouter = express.Router()
  12
  13 rateVideoRouter.put('/:id/rate',
  14   authenticate,
  15   asyncMiddleware(videoRateValidator),
  16   asyncMiddleware(rateVideoRetryWrapper)
  17 )
  18
  19 // ---------------------------------------------------------------------------
  20
  21 export {
  22   rateVideoRouter
  23 }
  24
  25 // ---------------------------------------------------------------------------
  26
  27 async function rateVideoRetryWrapper (req: express.Request, res: express.Response, next: express.NextFunction) {
  28   const options = {
  29     arguments: [ req, res ],
  30     errorMessage: 'Cannot update the user video rate.'
  31   }
  32
  33   await retryTransactionWrapper(rateVideo, options)
  34
  35   return res.type('json').status(204).end()
  36 }
  37
  38 async function rateVideo (req: express.Request, res: express.Response) {
  39   const body: UserVideoRateUpdate = req.body
  40   const rateType = body.rating
  41   const videoInstance: VideoModel = res.locals.video
  42   const accountInstance: AccountModel = res.locals.oauth.token.User.Account
  43
  44   await sequelizeTypescript.transaction(async t => {
  45     const sequelizeOptions = { transaction: t }
  46     const previousRate = await AccountVideoRateModel.load(accountInstance.id, videoInstance.id, t)
  47
  48     let likesToIncrement = 0
  49     let dislikesToIncrement = 0
  50
  51     if (rateType === VIDEO_RATE_TYPES.LIKE) likesToIncrement++
  52     else if (rateType === VIDEO_RATE_TYPES.DISLIKE) dislikesToIncrement++
  53
  54     // There was a previous rate, update it
  55     if (previousRate) {
  56       // We will remove the previous rate, so we will need to update the video count attribute
  57       if (previousRate.type === VIDEO_RATE_TYPES.LIKE) likesToIncrement--
  58       else if (previousRate.type === VIDEO_RATE_TYPES.DISLIKE) dislikesToIncrement--
  59
  60       if (rateType === 'none') { // Destroy previous rate
  61         await previousRate.destroy({ transaction: t })
  62       } else { // Update previous rate
  63         previousRate.type = rateType
  64
  65         await previousRate.save({ transaction: t })
  66       }
  67     } else if (rateType !== 'none') { // There was not a previous rate, insert a new one if there is a rate
  68       const query = {
  69         accountId: accountInstance.id,
  70         videoId: videoInstance.id,
  71         type: rateType
  72       }
  73
  74       await AccountVideoRateModel.create(query, sequelizeOptions)
  75     }
  76
  77     const incrementQuery = {
  78       likes: likesToIncrement,
  79       dislikes: dislikesToIncrement
  80     }
  81
  82     // Even if we do not own the video we increment the attributes
  83     // It is useful for the user to have a feedback
  84     await videoInstance.increment(incrementQuery, sequelizeOptions)
  85
  86     if (videoInstance.isOwned()) {
  87       await sendVideoRateChangeToFollowers(accountInstance, videoInstance, likesToIncrement, dislikesToIncrement, t)
  88     } else {
  89       await sendVideoRateChangeToOrigin(accountInstance, videoInstance, likesToIncrement, dislikesToIncrement, t)
  90     }
  91   })
  92
  93   logger.info('Account video rate for video %s of account %s updated.', videoInstance.name, accountInstance.name)
  94 }