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1 | /* | |
2 | Request Video for Quick And Dirty Updates like: | |
3 | - views | |
4 | - likes | |
5 | - dislikes | |
6 | ||
7 | We can't put it in the same system than basic requests for efficiency. | |
8 | Moreover we don't want to slow down the basic requests with a lot of views/likes/dislikes requests. | |
9 | So we put it an independant request scheduler. | |
10 | */ | |
11 | ||
12 | import { values } from 'lodash' | |
13 | import * as Sequelize from 'sequelize' | |
14 | ||
15 | import { REQUEST_VIDEO_QADU_TYPES } from '../initializers' | |
16 | ||
17 | import { addMethodsToModel } from './utils' | |
18 | import { | |
19 | RequestVideoQaduClass, | |
20 | RequestVideoQaduInstance, | |
21 | RequestVideoQaduAttributes, | |
22 | ||
23 | RequestVideoQaduMethods | |
24 | } from './request-video-qadu-interface' | |
25 | ||
26 | let RequestVideoQadu: Sequelize.Model<RequestVideoQaduInstance, RequestVideoQaduAttributes> | |
27 | let countTotalRequests: RequestVideoQaduMethods.CountTotalRequests | |
28 | let listWithLimitAndRandom: RequestVideoQaduMethods.ListWithLimitAndRandom | |
29 | let removeByRequestIdsAndPod: RequestVideoQaduMethods.RemoveByRequestIdsAndPod | |
30 | let removeAll: RequestVideoQaduMethods.RemoveAll | |
31 | ||
32 | export default function (sequelize, DataTypes) { | |
33 | RequestVideoQadu = sequelize.define('RequestVideoQadu', | |
34 | { | |
35 | type: { | |
36 | type: DataTypes.ENUM(values(REQUEST_VIDEO_QADU_TYPES)), | |
37 | allowNull: false | |
38 | } | |
39 | }, | |
40 | { | |
41 | timestamps: false, | |
42 | indexes: [ | |
43 | { | |
44 | fields: [ 'podId' ] | |
45 | }, | |
46 | { | |
47 | fields: [ 'videoId' ] | |
48 | } | |
49 | ] | |
50 | } | |
51 | ) | |
52 | ||
53 | const classMethods = [ | |
54 | associate, | |
55 | ||
56 | listWithLimitAndRandom, | |
57 | countTotalRequests, | |
58 | removeAll, | |
59 | removeByRequestIdsAndPod | |
60 | ] | |
61 | addMethodsToModel(RequestVideoQadu, classMethods) | |
62 | ||
63 | return RequestVideoQadu | |
64 | } | |
65 | ||
66 | // ------------------------------ STATICS ------------------------------ | |
67 | ||
68 | function associate (models) { | |
69 | RequestVideoQadu.belongsTo(models.Pod, { | |
70 | foreignKey: { | |
71 | name: 'podId', | |
72 | allowNull: false | |
73 | }, | |
74 | onDelete: 'CASCADE' | |
75 | }) | |
76 | ||
77 | RequestVideoQadu.belongsTo(models.Video, { | |
78 | foreignKey: { | |
79 | name: 'videoId', | |
80 | allowNull: false | |
81 | }, | |
82 | onDelete: 'CASCADE' | |
83 | }) | |
84 | } | |
85 | ||
86 | countTotalRequests = function (callback) { | |
87 | const query = {} | |
88 | return RequestVideoQadu.count(query).asCallback(callback) | |
89 | } | |
90 | ||
91 | listWithLimitAndRandom = function (limitPods, limitRequestsPerPod, callback) { | |
92 | const Pod = RequestVideoQadu['sequelize'].models.Pod | |
93 | ||
94 | Pod.listRandomPodIdsWithRequest(limitPods, 'RequestVideoQadus', function (err, podIds) { | |
95 | if (err) return callback(err) | |
96 | ||
97 | // We don't have friends that have requests | |
98 | if (podIds.length === 0) return callback(null, []) | |
99 | ||
100 | const query = { | |
101 | include: [ | |
102 | { | |
103 | model: RequestVideoQadu['sequelize'].models.Pod, | |
104 | where: { | |
105 | id: { | |
106 | $in: podIds | |
107 | } | |
108 | } | |
109 | }, | |
110 | { | |
111 | model: RequestVideoQadu['sequelize'].models.Video | |
112 | } | |
113 | ] | |
114 | } | |
115 | ||
116 | RequestVideoQadu.findAll(query).asCallback(function (err, requests) { | |
117 | if (err) return callback(err) | |
118 | ||
119 | const requestsGrouped = groupAndTruncateRequests(requests, limitRequestsPerPod) | |
120 | return callback(err, requestsGrouped) | |
121 | }) | |
122 | }) | |
123 | } | |
124 | ||
125 | removeByRequestIdsAndPod = function (ids, podId, callback) { | |
126 | const query = { | |
127 | where: { | |
128 | id: { | |
129 | $in: ids | |
130 | }, | |
131 | podId | |
132 | } | |
133 | } | |
134 | ||
135 | RequestVideoQadu.destroy(query).asCallback(callback) | |
136 | } | |
137 | ||
138 | removeAll = function (callback) { | |
139 | // Delete all requests | |
140 | RequestVideoQadu.truncate({ cascade: true }).asCallback(callback) | |
141 | } | |
142 | ||
143 | // --------------------------------------------------------------------------- | |
144 | ||
145 | function groupAndTruncateRequests (requests, limitRequestsPerPod) { | |
146 | const requestsGrouped = {} | |
147 | ||
148 | requests.forEach(function (request) { | |
149 | const pod = request.Pod | |
150 | ||
151 | if (!requestsGrouped[pod.id]) requestsGrouped[pod.id] = [] | |
152 | ||
153 | if (requestsGrouped[pod.id].length < limitRequestsPerPod) { | |
154 | requestsGrouped[pod.id].push({ | |
155 | request: request, | |
156 | video: request.Video, | |
157 | pod | |
158 | }) | |
159 | } | |
160 | }) | |
161 | ||
162 | return requestsGrouped | |
163 | } |