aboutsummaryrefslogtreecommitdiffhomepage
path: root/server/controllers/api/videos/rate.ts
blob: 8456cbaf24ec48685b6d2ed0348f57545fdefcaf (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
import * as express from 'express'
import * as Promise from 'bluebird'

import { database as db } from '../../../initializers/database'
import {
  logger,
  retryTransactionWrapper
} from '../../../helpers'
import {
  VIDEO_RATE_TYPES,
  REQUEST_VIDEO_EVENT_TYPES,
  REQUEST_VIDEO_QADU_TYPES
} from '../../../initializers'
import {
  addEventsToRemoteVideo,
  quickAndDirtyUpdatesVideoToFriends
} from '../../../lib'
import {
  authenticate,
  videoRateValidator
} from '../../../middlewares'
import { UserVideoRateUpdate, VideoRateType } from '../../../../shared'

const rateVideoRouter = express.Router()

rateVideoRouter.put('/:id/rate',
  authenticate,
  videoRateValidator,
  rateVideoRetryWrapper
)

// ---------------------------------------------------------------------------

export {
  rateVideoRouter
}

// ---------------------------------------------------------------------------

function rateVideoRetryWrapper (req: express.Request, res: express.Response, next: express.NextFunction) {
  const options = {
    arguments: [ req, res ],
    errorMessage: 'Cannot update the user video rate.'
  }

  retryTransactionWrapper(rateVideo, options)
    .then(() => res.type('json').status(204).end())
    .catch(err => next(err))
}

function rateVideo (req: express.Request, res: express.Response) {
  const body: UserVideoRateUpdate = req.body
  const rateType = body.rating
  const videoInstance = res.locals.video
  const userInstance = res.locals.oauth.token.User

  return db.sequelize.transaction(t => {
    return db.UserVideoRate.load(userInstance.id, videoInstance.id, t)
      .then(previousRate => {
        const options = { transaction: t }

        let likesToIncrement = 0
        let dislikesToIncrement = 0

        if (rateType === VIDEO_RATE_TYPES.LIKE) likesToIncrement++
        else if (rateType === VIDEO_RATE_TYPES.DISLIKE) dislikesToIncrement++

        let promise: Promise<any>

        // There was a previous rate, update it
        if (previousRate) {
          // We will remove the previous rate, so we will need to remove it from the video attribute
          if (previousRate.type === VIDEO_RATE_TYPES.LIKE) likesToIncrement--
          else if (previousRate.type === VIDEO_RATE_TYPES.DISLIKE) dislikesToIncrement--

          if (rateType === 'none') { // Destroy previous rate
            promise = previousRate.destroy()
          } else { // Update previous rate
            previousRate.type = rateType as VideoRateType

            promise = previousRate.save()
          }
        } else if (rateType !== 'none') { // There was not a previous rate, insert a new one if there is a rate
          const query = {
            userId: userInstance.id,
            videoId: videoInstance.id,
            type: rateType
          }

          promise = db.UserVideoRate.create(query, options)
        } else {
          promise = Promise.resolve()
        }

        return promise.then(() => ({ likesToIncrement, dislikesToIncrement }))
      })
      .then(({ likesToIncrement, dislikesToIncrement }) => {
        const options = { transaction: t }
        const incrementQuery = {
          likes: likesToIncrement,
          dislikes: dislikesToIncrement
        }

        // Even if we do not own the video we increment the attributes
        // It is usefull for the user to have a feedback
        return videoInstance.increment(incrementQuery, options).then(() => ({ likesToIncrement, dislikesToIncrement }))
      })
      .then(({ likesToIncrement, dislikesToIncrement }) => {
        // No need for an event type, we own the video
        if (videoInstance.isOwned()) return { likesToIncrement, dislikesToIncrement }

        const eventsParams = []

        if (likesToIncrement !== 0) {
          eventsParams.push({
            videoId: videoInstance.id,
            type: REQUEST_VIDEO_EVENT_TYPES.LIKES,
            count: likesToIncrement
          })
        }

        if (dislikesToIncrement !== 0) {
          eventsParams.push({
            videoId: videoInstance.id,
            type: REQUEST_VIDEO_EVENT_TYPES.DISLIKES,
            count: dislikesToIncrement
          })
        }

        return addEventsToRemoteVideo(eventsParams, t).then(() => ({ likesToIncrement, dislikesToIncrement }))
      })
      .then(({ likesToIncrement, dislikesToIncrement }) => {
        // We do not own the video, there is no need to send a quick and dirty update to friends
        // Our rate was already sent by the addEvent function
        if (videoInstance.isOwned() === false) return undefined

        const qadusParams = []

        if (likesToIncrement !== 0) {
          qadusParams.push({
            videoId: videoInstance.id,
            type: REQUEST_VIDEO_QADU_TYPES.LIKES
          })
        }

        if (dislikesToIncrement !== 0) {
          qadusParams.push({
            videoId: videoInstance.id,
            type: REQUEST_VIDEO_QADU_TYPES.DISLIKES
          })
        }

        return quickAndDirtyUpdatesVideoToFriends(qadusParams, t)
      })
  })
  .then(() => logger.info('User video rate for video %s of user %s updated.', videoInstance.name, userInstance.username))
  .catch(err => {
    // This is just a debug because we will retry the insert
    logger.debug('Cannot add the user video rate.', err)
    throw err
  })
}