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import * as express from 'express'
import * as Sequelize from 'sequelize'
import { waterfall } from 'async'
import { database as db } from '../../../initializers/database'
import {
logger,
retryTransactionWrapper,
startSerializableTransaction,
commitTransaction,
rollbackTransaction
} 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'
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, function (err) {
if (err) return next(err)
return res.type('json').status(204).end()
})
}
function rateVideo (req: express.Request, res: express.Response, finalCallback: (err: Error) => void) {
const rateType = req.body.rating
const videoInstance = res.locals.video
const userInstance = res.locals.oauth.token.User
waterfall([
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 === VIDEO_RATE_TYPES.LIKE) likesToIncrement++
else if (rateType === 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 === VIDEO_RATE_TYPES.LIKE) likesToIncrement--
else if (previousRate.type === 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: REQUEST_VIDEO_EVENT_TYPES.LIKES,
count: likesToIncrement
})
}
if (dislikesToIncrement !== 0) {
eventsParams.push({
videoId: videoInstance.id,
type: REQUEST_VIDEO_EVENT_TYPES.DISLIKES,
count: dislikesToIncrement
})
}
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: REQUEST_VIDEO_QADU_TYPES.LIKES
})
}
if (dislikesToIncrement !== 0) {
qadusParams.push({
videoId: videoInstance.id,
type: REQUEST_VIDEO_QADU_TYPES.DISLIKES
})
}
quickAndDirtyUpdatesVideoToFriends(qadusParams, t, function (err) {
return callback(err, t)
})
},
commitTransaction
], function (err: Error, t: Sequelize.Transaction) {
if (err) {
// This is just a debug because we will retry the insert
logger.debug('Cannot add the user video rate.', { error: err })
return rollbackTransaction(err, t, finalCallback)
}
logger.info('User video rate for video %s of user %s updated.', videoInstance.name, userInstance.username)
return finalCallback(null)
})
}
|
