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 { getRateUrl, sendVideoRateChange } from '../../../lib/activitypub'
   6 import { asyncMiddleware, asyncRetryTransactionMiddleware, authenticate, videoUpdateRateValidator } from '../../../middlewares'
   7 import { AccountModel } from '../../../models/account/account'
   8 import { AccountVideoRateModel } from '../../../models/account/account-video-rate'
   9
  10 const rateVideoRouter = express.Router()
  11
  12 rateVideoRouter.put('/:id/rate',
  13   authenticate,
  14   asyncMiddleware(videoUpdateRateValidator),
  15   asyncRetryTransactionMiddleware(rateVideo)
  16 )
  17
  18 // ---------------------------------------------------------------------------
  19
  20 export {
  21   rateVideoRouter
  22 }
  23
  24 // ---------------------------------------------------------------------------
  25
  26 async function rateVideo (req: express.Request, res: express.Response) {
  27   const body: UserVideoRateUpdate = req.body
  28   const rateType = body.rating
  29   const videoInstance = res.locals.video
  30   const userAccount = res.locals.oauth.token.User.Account
  31
  32   await sequelizeTypescript.transaction(async t => {
  33     const sequelizeOptions = { transaction: t }
  34
  35     const accountInstance = await AccountModel.load(userAccount.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 === 'like') likesToIncrement--
  48       else if (previousRate.type === '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         previousRate.url = getRateUrl(rateType, userAccount.Actor, videoInstance)
  55         await previousRate.save(sequelizeOptions)
  56       }
  57     } else if (rateType !== 'none') { // There was not a previous rate, insert a new one if there is a rate
  58       const query = {
  59         accountId: accountInstance.id,
  60         videoId: videoInstance.id,
  61         type: rateType,
  62         url: getRateUrl(rateType, userAccount.Actor, videoInstance)
  63       }
  64
  65       await AccountVideoRateModel.create(query, sequelizeOptions)
  66     }
  67
  68     const incrementQuery = {
  69       likes: likesToIncrement,
  70       dislikes: dislikesToIncrement
  71     }
  72
  73     await videoInstance.increment(incrementQuery, sequelizeOptions)
  74
  75     await sendVideoRateChange(accountInstance, videoInstance, likesToIncrement, dislikesToIncrement, t)
  76
  77     logger.info('Account video rate for video %s of account %s updated.', videoInstance.name, accountInstance.name)
  78   })
  79
  80   return res.type('json').status(204).end()
  81 }