server/controllers/api/videos/rate.ts

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