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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
|
/*
Request Video events (likes, dislikes, views...)
*/
import { values } from 'lodash'
import * as Sequelize from 'sequelize'
import { database as db } from '../../initializers/database'
import { REQUEST_VIDEO_EVENT_TYPES } from '../../initializers'
import { isVideoEventCountValid } from '../../helpers'
import { addMethodsToModel } from '../utils'
import {
RequestVideoEventInstance,
RequestVideoEventAttributes,
RequestVideoEventMethods,
RequestsVideoEventGrouped
} from './request-video-event-interface'
let RequestVideoEvent: Sequelize.Model<RequestVideoEventInstance, RequestVideoEventAttributes>
let countTotalRequests: RequestVideoEventMethods.CountTotalRequests
let listWithLimitAndRandom: RequestVideoEventMethods.ListWithLimitAndRandom
let removeByRequestIdsAndPod: RequestVideoEventMethods.RemoveByRequestIdsAndPod
let removeAll: RequestVideoEventMethods.RemoveAll
export default function (sequelize: Sequelize.Sequelize, DataTypes: Sequelize.DataTypes) {
RequestVideoEvent = sequelize.define<RequestVideoEventInstance, RequestVideoEventAttributes>('RequestVideoEvent',
{
type: {
type: DataTypes.ENUM(values(REQUEST_VIDEO_EVENT_TYPES)),
allowNull: false
},
count: {
type: DataTypes.INTEGER,
allowNull: false,
validate: {
countValid: function (value) {
const res = isVideoEventCountValid(value)
if (res === false) throw new Error('Video event count is not valid.')
}
}
}
},
{
updatedAt: false,
indexes: [
{
fields: [ 'videoId' ]
}
]
}
)
const classMethods = [
associate,
listWithLimitAndRandom,
countTotalRequests,
removeAll,
removeByRequestIdsAndPod
]
addMethodsToModel(RequestVideoEvent, classMethods)
return RequestVideoEvent
}
// ------------------------------ STATICS ------------------------------
function associate (models) {
RequestVideoEvent.belongsTo(models.Video, {
foreignKey: {
name: 'videoId',
allowNull: false
},
onDelete: 'CASCADE'
})
}
countTotalRequests = function () {
const query = {}
return RequestVideoEvent.count(query)
}
listWithLimitAndRandom = function (limitPods: number, limitRequestsPerPod: number) {
const Pod = db.Pod
// We make a join between videos and authors to find the podId of our video event requests
const podJoins = 'INNER JOIN "VideoChannels" ON "VideoChannels"."authorId" = "Authors"."id" ' +
'INNER JOIN "Videos" ON "Videos"."channelId" = "VideoChannels"."id" ' +
'INNER JOIN "RequestVideoEvents" ON "RequestVideoEvents"."videoId" = "Videos"."id"'
return Pod.listRandomPodIdsWithRequest(limitPods, 'Authors', podJoins).then(podIds => {
// We don't have friends that have requests
if (podIds.length === 0) return []
const query = {
order: [
[ 'id', 'ASC' ]
],
include: [
{
model: RequestVideoEvent['sequelize'].models.Video,
include: [
{
model: RequestVideoEvent['sequelize'].models.VideoChannel,
include: [
{
model: RequestVideoEvent['sequelize'].models.Author,
include: [
{
model: RequestVideoEvent['sequelize'].models.Pod,
where: {
id: {
$in: podIds
}
}
}
]
}
]
}
]
}
]
}
return RequestVideoEvent.findAll(query).then(requests => {
const requestsGrouped = groupAndTruncateRequests(requests, limitRequestsPerPod)
return requestsGrouped
})
})
}
removeByRequestIdsAndPod = function (ids: number[], podId: number) {
const query = {
where: {
id: {
$in: ids
}
},
include: [
{
model: RequestVideoEvent['sequelize'].models.Video,
include: [
{
model: RequestVideoEvent['sequelize'].models.VideoChannel,
include: [
{
model: RequestVideoEvent['sequelize'].models.Author,
where: {
podId
}
}
]
}
]
}
]
}
return RequestVideoEvent.destroy(query)
}
removeAll = function () {
// Delete all requests
return RequestVideoEvent.truncate({ cascade: true })
}
// ---------------------------------------------------------------------------
function groupAndTruncateRequests (events: RequestVideoEventInstance[], limitRequestsPerPod: number) {
const eventsGrouped: RequestsVideoEventGrouped = {}
events.forEach(event => {
const pod = event.Video.VideoChannel.Author.Pod
if (!eventsGrouped[pod.id]) eventsGrouped[pod.id] = []
if (eventsGrouped[pod.id].length < limitRequestsPerPod) {
eventsGrouped[pod.id].push({
id: event.id,
type: event.type,
count: event.count,
video: event.Video,
pod
})
}
})
return eventsGrouped
}
|
