aboutsummaryrefslogtreecommitdiffhomepage
path: root/server/models/utils.ts
blob: e7e6ddde1f61e6c86117b4fa073f32bf6ebfe45e (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
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
192
import { Model, Sequelize } from 'sequelize-typescript'
import * as validator from 'validator'
import { Col } from 'sequelize/types/lib/utils'
import { col, literal, OrderItem } from 'sequelize'

type SortType = { sortModel: string, sortValue: string }

// Translate for example "-name" to [ [ 'name', 'DESC' ], [ 'id', 'ASC' ] ]
function getSort (value: string, lastSort: OrderItem = [ 'id', 'ASC' ]): OrderItem[] {
  const { direction, field } = buildDirectionAndField(value)

  let finalField: string | Col

  if (field.toLowerCase() === 'match') { // Search
    finalField = Sequelize.col('similarity')
  } else if (field === 'videoQuotaUsed') { // Users list
    finalField = Sequelize.col('videoQuotaUsed')
  } else {
    finalField = field
  }

  return [ [ finalField, direction ], lastSort ]
}

function getVideoSort (value: string, lastSort: OrderItem = [ 'id', 'ASC' ]): OrderItem[] {
  const { direction, field } = buildDirectionAndField(value)

  if (field.toLowerCase() === 'trending') { // Sort by aggregation
    return [
      [ Sequelize.fn('COALESCE', Sequelize.fn('SUM', Sequelize.col('VideoViews.views')), '0'), direction ],

      [ Sequelize.col('VideoModel.views'), direction ],

      lastSort
    ]
  }

  let finalField: string | Col

  // Alias
  if (field.toLowerCase() === 'match') { // Search
    finalField = Sequelize.col('similarity')
  } else {
    finalField = field
  }

  const firstSort = typeof finalField === 'string'
    ? finalField.split('.').concat([ direction ]) as any // FIXME: sequelize typings
    : [ finalField, direction ]

  return [ firstSort, lastSort ]
}

function getBlacklistSort (model: any, value: string, lastSort: OrderItem = [ 'id', 'ASC' ]): OrderItem[] {
  const [ firstSort ] = getSort(value)

  if (model) return [ [ literal(`"${model}.${firstSort[ 0 ]}" ${firstSort[ 1 ]}`) ], lastSort ] as any[] // FIXME: typings
  return [ firstSort, lastSort ]
}

function isOutdated (model: { createdAt: Date, updatedAt: Date }, refreshInterval: number) {
  const now = Date.now()
  const createdAtTime = model.createdAt.getTime()
  const updatedAtTime = model.updatedAt.getTime()

  return (now - createdAtTime) > refreshInterval && (now - updatedAtTime) > refreshInterval
}

function throwIfNotValid (value: any, validator: (value: any) => boolean, fieldName = 'value', nullable = false) {
  if (nullable && (value === null || value === undefined)) return

  if (validator(value) === false) {
    throw new Error(`"${value}" is not a valid ${fieldName}.`)
  }
}

function buildTrigramSearchIndex (indexName: string, attribute: string) {
  return {
    name: indexName,
    fields: [ Sequelize.literal('lower(immutable_unaccent(' + attribute + '))') as any ],
    using: 'gin',
    operator: 'gin_trgm_ops'
  }
}

function createSimilarityAttribute (col: string, value: string) {
  return Sequelize.fn(
    'similarity',

    searchTrigramNormalizeCol(col),

    searchTrigramNormalizeValue(value)
  )
}

function buildBlockedAccountSQL (serverAccountId: number, userAccountId?: number) {
  const blockerIds = [ serverAccountId ]
  if (userAccountId) blockerIds.push(userAccountId)

  const blockerIdsString = blockerIds.join(', ')

  return 'SELECT "targetAccountId" AS "id" FROM "accountBlocklist" WHERE "accountId" IN (' + blockerIdsString + ')' +
    ' UNION ALL ' +
    'SELECT "account"."id" AS "id" FROM account INNER JOIN "actor" ON account."actorId" = actor.id ' +
    'INNER JOIN "serverBlocklist" ON "actor"."serverId" = "serverBlocklist"."targetServerId" ' +
    'WHERE "serverBlocklist"."accountId" IN (' + blockerIdsString + ')'
}

function buildServerIdsFollowedBy (actorId: any) {
  const actorIdNumber = parseInt(actorId + '', 10)

  return '(' +
    'SELECT "actor"."serverId" FROM "actorFollow" ' +
    'INNER JOIN "actor" ON actor.id = "actorFollow"."targetActorId" ' +
    'WHERE "actorFollow"."actorId" = ' + actorIdNumber +
  ')'
}

function buildWhereIdOrUUID (id: number | string) {
  return validator.isInt('' + id) ? { id } : { uuid: id }
}

function parseAggregateResult (result: any) {
  if (!result) return 0

  const total = parseInt(result + '', 10)
  if (isNaN(total)) return 0

  return total
}

const createSafeIn = (model: typeof Model, stringArr: (string | number)[]) => {
  return stringArr.map(t => model.sequelize.escape('' + t))
                  .join(', ')
}

function buildLocalAccountIdsIn () {
  return literal(
    '(SELECT "account"."id" FROM "account" INNER JOIN "actor" ON "actor"."id" = "account"."actorId" AND "actor"."serverId" IS NULL)'
  )
}

function buildLocalActorIdsIn () {
  return literal(
    '(SELECT "actor"."id" FROM "actor" WHERE "actor"."serverId" IS NULL)'
  )
}

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

export {
  buildBlockedAccountSQL,
  buildLocalActorIdsIn,
  SortType,
  buildLocalAccountIdsIn,
  getSort,
  getVideoSort,
  getBlacklistSort,
  createSimilarityAttribute,
  throwIfNotValid,
  buildServerIdsFollowedBy,
  buildTrigramSearchIndex,
  buildWhereIdOrUUID,
  isOutdated,
  parseAggregateResult,
  createSafeIn
}

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

function searchTrigramNormalizeValue (value: string) {
  return Sequelize.fn('lower', Sequelize.fn('immutable_unaccent', value))
}

function searchTrigramNormalizeCol (col: string) {
  return Sequelize.fn('lower', Sequelize.fn('immutable_unaccent', Sequelize.col(col)))
}

function buildDirectionAndField (value: string) {
  let field: string
  let direction: 'ASC' | 'DESC'

  if (value.substring(0, 1) === '-') {
    direction = 'DESC'
    field = value.substring(1)
  } else {
    direction = 'ASC'
    field = value
  }

  return { direction, field }
}