server/controllers/api/videos/rate.ts

   1 import * as express from 'express'
   2
   3 import { database as db } from '../../../initializers/database'
   4 import {
   5   logger,
   6   retryTransactionWrapper
   7 } from '../../../helpers'
   8 import {
   9   VIDEO_RATE_TYPES,
  10   REQUEST_VIDEO_EVENT_TYPES,
  11   REQUEST_VIDEO_QADU_TYPES
  12 } from '../../../initializers'
  13 import {
  14   addEventsToRemoteVideo,
  15   quickAndDirtyUpdatesVideoToFriends
  16 } from '../../../lib'
  17 import {
  18   authenticate,
  19   videoRateValidator
  20 } from '../../../middlewares'
  21
  22 const rateVideoRouter = express.Router()
  23
  24 rateVideoRouter.put('/:id/rate',
  25   authenticate,
  26   videoRateValidator,
  27   rateVideoRetryWrapper
  28 )
  29
  30 // ---------------------------------------------------------------------------
  31
  32 export {
  33   rateVideoRouter
  34 }
  35
  36 // ---------------------------------------------------------------------------
  37
  38 function rateVideoRetryWrapper (req: express.Request, res: express.Response, next: express.NextFunction) {
  39   const options = {
  40     arguments: [ req, res ],
  41     errorMessage: 'Cannot update the user video rate.'
  42   }
  43
  44   retryTransactionWrapper(rateVideo, options)
  45     .then(() => res.type('json').status(204).end())
  46     .catch(err => next(err))
  47 }
  48
  49 function rateVideo (req: express.Request, res: express.Response) {
  50   const rateType = req.body.rating
  51   const videoInstance = res.locals.video
  52   const userInstance = res.locals.oauth.token.User
  53
  54   return db.sequelize.transaction(t => {
  55     return db.UserVideoRate.load(userInstance.id, videoInstance.id, t)
  56       .then(previousRate => {
  57         const options = { transaction: t }
  58
  59         let likesToIncrement = 0
  60         let dislikesToIncrement = 0
  61
  62         if (rateType === VIDEO_RATE_TYPES.LIKE) likesToIncrement++
  63         else if (rateType === VIDEO_RATE_TYPES.DISLIKE) dislikesToIncrement++
  64
  65         // There was a previous rate, update it
  66         if (previousRate) {
  67           // We will remove the previous rate, so we will need to remove it from the video attribute
  68           if (previousRate.type === VIDEO_RATE_TYPES.LIKE) likesToIncrement--
  69           else if (previousRate.type === VIDEO_RATE_TYPES.DISLIKE) dislikesToIncrement--
  70
  71           previousRate.type = rateType
  72
  73           return previousRate.save(options).then(() => ({ t, likesToIncrement, dislikesToIncrement }))
  74         } else { // There was not a previous rate, insert a new one
  75           const query = {
  76             userId: userInstance.id,
  77             videoId: videoInstance.id,
  78             type: rateType
  79           }
  80
  81           return db.UserVideoRate.create(query, options).then(() => ({ likesToIncrement, dislikesToIncrement }))
  82         }
  83       })
  84       .then(({ likesToIncrement, dislikesToIncrement }) => {
  85         const options = { transaction: t }
  86         const incrementQuery = {
  87           likes: likesToIncrement,
  88           dislikes: dislikesToIncrement
  89         }
  90
  91         // Even if we do not own the video we increment the attributes
  92         // It is usefull for the user to have a feedback
  93         return videoInstance.increment(incrementQuery, options).then(() => ({ likesToIncrement, dislikesToIncrement }))
  94       })
  95       .then(({ likesToIncrement, dislikesToIncrement }) => {
  96         // No need for an event type, we own the video
  97         if (videoInstance.isOwned()) return { likesToIncrement, dislikesToIncrement }
  98
  99         const eventsParams = []
 100
 101         if (likesToIncrement !== 0) {
 102           eventsParams.push({
 103             videoId: videoInstance.id,
 104             type: REQUEST_VIDEO_EVENT_TYPES.LIKES,
 105             count: likesToIncrement
 106           })
 107         }
 108
 109         if (dislikesToIncrement !== 0) {
 110           eventsParams.push({
 111             videoId: videoInstance.id,
 112             type: REQUEST_VIDEO_EVENT_TYPES.DISLIKES,
 113             count: dislikesToIncrement
 114           })
 115         }
 116
 117         return addEventsToRemoteVideo(eventsParams, t).then(() => ({ likesToIncrement, dislikesToIncrement }))
 118       })
 119       .then(({ likesToIncrement, dislikesToIncrement }) => {
 120         // We do not own the video, there is no need to send a quick and dirty update to friends
 121         // Our rate was already sent by the addEvent function
 122         if (videoInstance.isOwned() === false) return undefined
 123
 124         const qadusParams = []
 125
 126         if (likesToIncrement !== 0) {
 127           qadusParams.push({
 128             videoId: videoInstance.id,
 129             type: REQUEST_VIDEO_QADU_TYPES.LIKES
 130           })
 131         }
 132
 133         if (dislikesToIncrement !== 0) {
 134           qadusParams.push({
 135             videoId: videoInstance.id,
 136             type: REQUEST_VIDEO_QADU_TYPES.DISLIKES
 137           })
 138         }
 139
 140         return quickAndDirtyUpdatesVideoToFriends(qadusParams, t)
 141       })
 142   })
 143   .then(() => logger.info('User video rate for video %s of user %s updated.', videoInstance.name, userInstance.username))
 144   .catch(err => {
 145     // This is just a debug because we will retry the insert
 146     logger.debug('Cannot add the user video rate.', err)
 147     throw err
 148   })
 149 }