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
  32   await sequelizeTypescript.transaction(async t => {
  33     const sequelizeOptions = { transaction: t }
  34
  35     const accountInstance = await AccountModel.load(res.locals.oauth.token.User.Account.id, t)
  36     const previousRate = await AccountVideoRateModel.load(accountInstance.id, videoInstance.id, t)
  37
  38     let likesToIncrement = 0
  39     let dislikesToIncrement = 0
  40
  41     if (rateType === VIDEO_RATE_TYPES.LIKE) likesToIncrement++
  42     else if (rateType === VIDEO_RATE_TYPES.DISLIKE) dislikesToIncrement++
  43
  44     // There was a previous rate, update it
  45     if (previousRate) {
  46       // We will remove the previous rate, so we will need to update the video count attribute
  47       if (previousRate.type === VIDEO_RATE_TYPES.LIKE) likesToIncrement--
  48       else if (previousRate.type === VIDEO_RATE_TYPES.DISLIKE) dislikesToIncrement--
  49
  50       if (rateType === 'none') { // Destroy previous rate
  51         await previousRate.destroy(sequelizeOptions)
  52       } else { // Update previous rate
  53         previousRate.type = rateType
  54         await previousRate.save(sequelizeOptions)
  55       }
  56     } else if (rateType !== 'none') { // There was not a previous rate, insert a new one if there is a rate
  57       const query = {
  58         accountId: accountInstance.id,
  59         videoId: videoInstance.id,
  60         type: rateType
  61       }
  62
  63       await AccountVideoRateModel.create(query, sequelizeOptions)
  64     }
  65
  66     const incrementQuery = {
  67       likes: likesToIncrement,
  68       dislikes: dislikesToIncrement
  69     }
  70
  71     await videoInstance.increment(incrementQuery, sequelizeOptions)
  72
  73     await sendVideoRateChange(accountInstance, videoInstance, likesToIncrement, dislikesToIncrement, t)
  74
  75     logger.info('Account video rate for video %s of account %s updated.', videoInstance.name, accountInstance.name)
  76   })
  77
  78   return res.type('json').status(204).end()
  79 }