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import { Sequelize } from 'sequelize-typescript'
import * as validator from 'validator'
import { OrderItem } from 'sequelize'
import { Col } from 'sequelize/types/lib/utils'
type SortType = { sortModel: any, 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 {
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 getSortOnModel (model: any, value: string, lastSort: OrderItem = [ 'id', 'ASC' ]): OrderItem[] {
const [ firstSort ] = getSort(value)
if (model) return [ [ model, firstSort[0], firstSort[1] ], lastSort ]
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
}
// ---------------------------------------------------------------------------
export {
buildBlockedAccountSQL,
SortType,
getSort,
getVideoSort,
getSortOnModel,
createSimilarityAttribute,
throwIfNotValid,
buildServerIdsFollowedBy,
buildTrigramSearchIndex,
buildWhereIdOrUUID,
isOutdated,
parseAggregateResult
}
// ---------------------------------------------------------------------------
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 }
}
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