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
163
164
165
166
167
168
169
|
'use strict'
const express = require('express')
const waterfall = require('async/waterfall')
const constants = require('../../../initializers/constants')
const db = require('../../../initializers/database')
const logger = require('../../../helpers/logger')
const friends = require('../../../lib/friends')
const middlewares = require('../../../middlewares')
const oAuth = middlewares.oauth
const validators = middlewares.validators
const validatorsVideos = validators.videos
const databaseUtils = require('../../../helpers/database-utils')
const router = express.Router()
router.put('/:id/rate',
oAuth.authenticate,
validatorsVideos.videoRate,
rateVideoRetryWrapper
)
// ---------------------------------------------------------------------------
module.exports = router
// ---------------------------------------------------------------------------
function rateVideoRetryWrapper (req, res, next) {
const options = {
arguments: [ req, res ],
errorMessage: 'Cannot update the user video rate.'
}
databaseUtils.retryTransactionWrapper(rateVideo, options, function (err) {
if (err) return next(err)
return res.type('json').status(204).end()
})
}
function rateVideo (req, res, finalCallback) {
const rateType = req.body.rating
const videoInstance = res.locals.video
const userInstance = res.locals.oauth.token.User
waterfall([
databaseUtils.startSerializableTransaction,
function findPreviousRate (t, callback) {
db.UserVideoRate.load(userInstance.id, videoInstance.id, t, function (err, previousRate) {
return callback(err, t, previousRate)
})
},
function insertUserRateIntoDB (t, previousRate, callback) {
const options = { transaction: t }
let likesToIncrement = 0
let dislikesToIncrement = 0
if (rateType === constants.VIDEO_RATE_TYPES.LIKE) likesToIncrement++
else if (rateType === constants.VIDEO_RATE_TYPES.DISLIKE) dislikesToIncrement++
// 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 === constants.VIDEO_RATE_TYPES.LIKE) likesToIncrement--
else if (previousRate.type === constants.VIDEO_RATE_TYPES.DISLIKE) dislikesToIncrement--
previousRate.type = rateType
previousRate.save(options).asCallback(function (err) {
return callback(err, t, likesToIncrement, dislikesToIncrement)
})
} else { // There was not a previous rate, insert a new one
const query = {
userId: userInstance.id,
videoId: videoInstance.id,
type: rateType
}
db.UserVideoRate.create(query, options).asCallback(function (err) {
return callback(err, t, likesToIncrement, dislikesToIncrement)
})
}
},
function updateVideoAttributeDB (t, likesToIncrement, dislikesToIncrement, callback) {
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
videoInstance.increment(incrementQuery, options).asCallback(function (err) {
return callback(err, t, likesToIncrement, dislikesToIncrement)
})
},
function sendEventsToFriendsIfNeeded (t, likesToIncrement, dislikesToIncrement, callback) {
// No need for an event type, we own the video
if (videoInstance.isOwned()) return callback(null, t, likesToIncrement, dislikesToIncrement)
const eventsParams = []
if (likesToIncrement !== 0) {
eventsParams.push({
videoId: videoInstance.id,
type: constants.REQUEST_VIDEO_EVENT_TYPES.LIKES,
count: likesToIncrement
})
}
if (dislikesToIncrement !== 0) {
eventsParams.push({
videoId: videoInstance.id,
type: constants.REQUEST_VIDEO_EVENT_TYPES.DISLIKES,
count: dislikesToIncrement
})
}
friends.addEventsToRemoteVideo(eventsParams, t, function (err) {
return callback(err, t, likesToIncrement, dislikesToIncrement)
})
},
function sendQaduToFriendsIfNeeded (t, likesToIncrement, dislikesToIncrement, callback) {
// 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 callback(null, t)
const qadusParams = []
if (likesToIncrement !== 0) {
qadusParams.push({
videoId: videoInstance.id,
type: constants.REQUEST_VIDEO_QADU_TYPES.LIKES
})
}
if (dislikesToIncrement !== 0) {
qadusParams.push({
videoId: videoInstance.id,
type: constants.REQUEST_VIDEO_QADU_TYPES.DISLIKES
})
}
friends.quickAndDirtyUpdatesVideoToFriends(qadusParams, t, function (err) {
return callback(err, t)
})
},
databaseUtils.commitTransaction
], function (err, t) {
if (err) {
// This is just a debug because we will retry the insert
logger.debug('Cannot add the user video rate.', { error: err })
return databaseUtils.rollbackTransaction(err, t, finalCallback)
}
logger.info('User video rate for video %s of user %s updated.', videoInstance.name, userInstance.username)
return finalCallback(null)
})
}
|
