1 files changed, 359 insertions, 0 deletions

diff --git a/server/models/video/video-query-builder.ts b/server/models/video/video-query-builder.ts
new file mode 100644
index 000000000..c4b31e58e
--- /dev/null
+++ b/server/models/video/video-query-builder.ts
@@ -0,0 +1,359 @@
+import { VideoFilter, VideoPrivacy, VideoState } from '@shared/models'
+import { buildDirectionAndField, createSafeIn } from '@server/models/utils'
+import { Model } from 'sequelize-typescript'
+import { MUserAccountId, MUserId } from '@server/typings/models'
+import validator from 'validator'
+
+export type BuildVideosQueryOptions = {
+  attributes?: string[]
+
+  serverAccountId: number
+  followerActorId: number
+  includeLocalVideos: boolean
+
+  count: number
+  start: number
+  sort: string
+
+  filter?: VideoFilter
+  categoryOneOf?: number[]
+  nsfw?: boolean
+  licenceOneOf?: number[]
+  languageOneOf?: string[]
+  tagsOneOf?: string[]
+  tagsAllOf?: string[]
+
+  withFiles?: boolean
+
+  accountId?: number
+  videoChannelId?: number
+
+  videoPlaylistId?: number
+
+  trendingDays?: number
+  user?: MUserAccountId
+  historyOfUser?: MUserId
+
+  startDate?: string // ISO 8601
+  endDate?: string // ISO 8601
+  originallyPublishedStartDate?: string
+  originallyPublishedEndDate?: string
+
+  durationMin?: number // seconds
+  durationMax?: number // seconds
+
+  search?: string
+
+  isCount?: boolean
+
+  group?: string
+  having?: string
+}
+
+function buildListQuery (model: typeof Model, options: BuildVideosQueryOptions) {
+  const and: string[] = []
+  const cte: string[] = []
+  const joins: string[] = []
+  const replacements: any = {}
+
+  let attributes: string[] = options.attributes || [ '"video"."id"' ]
+  let group = options.group || ''
+  const having = options.having || ''
+
+  joins.push(
+    'INNER JOIN "videoChannel" ON "videoChannel"."id" = "video"."channelId"' +
+    'INNER JOIN "account" ON "account"."id" = "videoChannel"."accountId"' +
+    'INNER JOIN "actor" ON "account"."actorId" = "actor"."id"'
+  )
+
+  and.push('"video"."id" NOT IN (SELECT "videoBlacklist"."videoId" FROM "videoBlacklist")')
+
+  if (options.serverAccountId) {
+    const blockerIds = [ options.serverAccountId ]
+    if (options.user) blockerIds.push(options.user.Account.id)
+
+    cte.push(
+      '"mutedAccount" AS (' +
+      '    SELECT "targetAccountId" AS "id"' +
+      '    FROM "accountBlocklist"' +
+      '    WHERE "accountId" IN (' + createSafeIn(model, blockerIds) + ')' +
+      '    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 (' + createSafeIn(model, blockerIds) + ')' +
+      ')'
+    )
+
+    cte.push(
+      '"mutedChannel" AS (' +
+      '        SELECT "videoChannel"."id"' +
+      '      FROM "videoChannel"' +
+      '      INNER JOIN "mutedAccount" ON "mutedAccount"."id" = "videoChannel"."accountId"' +
+      '    )'
+    )
+
+    and.push(
+      '"video"."channelId" NOT IN (SELECT "id" FROM "mutedChannel")'
+    )
+
+    replacements.videoChannelId = options.videoChannelId
+  }
+
+  // Only list public/published videos
+  if (!options.filter || options.filter !== 'all-local') {
+    and.push(
+      `("video"."state" = ${VideoState.PUBLISHED} OR ` +
+      `("video"."state" = ${VideoState.TO_TRANSCODE} AND "video"."waitTranscoding" IS false))`
+    )
+
+    if (options.user) {
+      and.push(
+        `("video"."privacy" = ${VideoPrivacy.PUBLIC} OR "video"."privacy" = ${VideoPrivacy.INTERNAL})`
+      )
+    } else { // Or only public videos
+      and.push(
+        `"video"."privacy" = ${VideoPrivacy.PUBLIC}`
+      )
+    }
+  }
+
+  if (options.videoPlaylistId) {
+    joins.push(
+      'INNER JOIN "videoPlaylistElement" "video"."id" = "videoPlaylistElement"."videoId" ' +
+      'AND "videoPlaylistElement"."videoPlaylistId" = :videoPlaylistId'
+    )
+
+    replacements.videoPlaylistId = options.videoPlaylistId
+  }
+
+  if (options.filter && (options.filter === 'local' || options.filter === 'all-local')) {
+    and.push('"video"."remote" IS FALSE')
+  }
+
+  if (options.accountId) {
+    and.push('"account"."id" = :accountId')
+    replacements.accountId = options.accountId
+  }
+
+  if (options.videoChannelId) {
+    and.push('"videoChannel"."id" = :videoChannelId')
+    replacements.videoChannelId = options.videoChannelId
+  }
+
+  if (options.followerActorId) {
+    let query =
+      '(' +
+      '  EXISTS (' +
+      '    SELECT 1 FROM "videoShare" ' +
+      '    INNER JOIN "actorFollow" "actorFollowShare" ON "actorFollowShare"."targetActorId" = "videoShare"."actorId" ' +
+      '    AND "actorFollowShare"."actorId" = :followerActorId WHERE "videoShare"."videoId" = "video"."id"' +
+      '  )' +
+      '  OR' +
+      '  EXISTS (' +
+      '    SELECT 1 from "actorFollow" ' +
+      '    WHERE "actorFollow"."targetActorId" = "actor"."id" AND "actorFollow"."actorId" = :followerActorId' +
+      '  )'
+
+    if (options.includeLocalVideos) {
+      query += '  OR "video"."remote" IS FALSE'
+    }
+
+    query += ')'
+
+    and.push(query)
+    replacements.followerActorId = options.followerActorId
+  }
+
+  if (options.withFiles === true) {
+    and.push('EXISTS (SELECT 1 FROM "videoFile" WHERE "videoFile"."videoId" = "video"."id")')
+  }
+
+  if (options.tagsOneOf) {
+    const tagsOneOfLower = options.tagsOneOf.map(t => t.toLowerCase())
+
+    and.push(
+      'EXISTS (' +
+      '  SELECT 1 FROM "videoTag" ' +
+      '  INNER JOIN "tag" ON "tag"."id" = "videoTag"."tagId" ' +
+      '  WHERE lower("tag"."name") IN (' + createSafeIn(model, tagsOneOfLower) + ') ' +
+      '  AND "video"."id" = "videoTag"."videoId"' +
+      ')'
+    )
+  }
+
+  if (options.tagsAllOf) {
+    const tagsAllOfLower = options.tagsAllOf.map(t => t.toLowerCase())
+
+    and.push(
+      'EXISTS (' +
+      '  SELECT 1 FROM "videoTag" ' +
+      '  INNER JOIN "tag" ON "tag"."id" = "videoTag"."tagId" ' +
+      '  WHERE lower("tag"."name") IN (' + createSafeIn(model, tagsAllOfLower) + ') ' +
+      '  AND "video"."id" = "videoTag"."videoId" ' +
+      '  GROUP BY "videoTag"."videoId" HAVING COUNT(*) = ' + tagsAllOfLower.length +
+      ')'
+    )
+  }
+
+  if (options.nsfw === true) {
+    and.push('"video"."nsfw" IS TRUE')
+  }
+
+  if (options.nsfw === false) {
+    and.push('"video"."nsfw" IS FALSE')
+  }
+
+  if (options.categoryOneOf) {
+    and.push('"video"."category" IN (:categoryOneOf)')
+    replacements.categoryOneOf = options.categoryOneOf
+  }
+
+  if (options.licenceOneOf) {
+    and.push('"video"."licence" IN (:licenceOneOf)')
+    replacements.licenceOneOf = options.licenceOneOf
+  }
+
+  if (options.languageOneOf) {
+    replacements.languageOneOf = options.languageOneOf.filter(l => l && l !== '_unknown')
+
+    let languagesQuery = '("video"."language" IN (:languageOneOf) OR '
+
+    if (options.languageOneOf.includes('_unknown')) {
+      languagesQuery += '"video"."language" IS NULL OR '
+    }
+
+    and.push(
+      languagesQuery +
+      '  EXISTS (' +
+      '    SELECT 1 FROM "videoCaption" WHERE "videoCaption"."language" ' +
+      '    IN (' + createSafeIn(model, options.languageOneOf) + ') AND ' +
+      '    "videoCaption"."videoId" = "video"."id"' +
+      '  )' +
+      ')'
+    )
+  }
+
+  // We don't exclude results in this if so if we do a count we don't need to add this complex clauses
+  if (options.trendingDays && options.isCount !== true) {
+    const viewsGteDate = new Date(new Date().getTime() - (24 * 3600 * 1000) * options.trendingDays)
+
+    joins.push('LEFT JOIN "videoView" ON "video"."id" = "videoView"."videoId" AND "videoView"."startDate" >= :viewsGteDate')
+    replacements.viewsGteDate = viewsGteDate
+
+    group = 'GROUP BY "video"."id"'
+  }
+
+  if (options.historyOfUser) {
+    joins.push('INNER JOIN "userVideoHistory" on "video"."id" = "userVideoHistory"."videoId"')
+
+    and.push('"userVideoHistory"."userId" = :historyOfUser')
+    replacements.historyOfUser = options.historyOfUser
+  }
+
+  if (options.startDate) {
+    and.push('"video"."publishedAt" >= :startDate')
+    replacements.startDate = options.startDate
+  }
+
+  if (options.endDate) {
+    and.push('"video"."publishedAt" <= :endDate')
+    replacements.endDate = options.endDate
+  }
+
+  if (options.originallyPublishedStartDate) {
+    and.push('"video"."originallyPublishedAt" >= :originallyPublishedStartDate')
+    replacements.originallyPublishedStartDate = options.originallyPublishedStartDate
+  }
+
+  if (options.originallyPublishedEndDate) {
+    and.push('"video"."originallyPublishedAt" <= :originallyPublishedEndDate')
+    replacements.originallyPublishedEndDate = options.originallyPublishedEndDate
+  }
+
+  if (options.durationMin) {
+    and.push('"video"."duration" >= :durationMin')
+    replacements.durationMin = options.durationMin
+  }
+
+  if (options.durationMax) {
+    and.push('"video"."duration" <= :durationMax')
+    replacements.durationMax = options.durationMax
+  }
+
+  if (options.search) {
+    const escapedSearch = model.sequelize.escape(options.search)
+    const escapedLikeSearch = model.sequelize.escape('%' + options.search + '%')
+
+    let base = '(' +
+    '  lower(immutable_unaccent("video"."name")) % lower(immutable_unaccent(' + escapedSearch + ')) OR ' +
+    '  lower(immutable_unaccent("video"."name")) LIKE lower(immutable_unaccent(' + escapedLikeSearch + ')) OR ' +
+    '  EXISTS (' +
+    '    SELECT 1 FROM "videoTag" ' +
+    '    INNER JOIN "tag" ON "tag"."id" = "videoTag"."tagId" ' +
+    `    WHERE lower("tag"."name") = ${escapedSearch} ` +
+    '    AND "video"."id" = "videoTag"."videoId"' +
+    '  )'
+
+    if (validator.isUUID(options.search)) {
+      base += ` OR "video"."uuid" = ${escapedSearch}`
+    }
+
+    base += ')'
+    and.push(base)
+
+    attributes.push(`similarity(lower(immutable_unaccent("video"."name")), lower(immutable_unaccent(${escapedSearch}))) as similarity`)
+  } else {
+    attributes.push('0 as similarity')
+  }
+
+  if (options.isCount === true) attributes = [ 'COUNT(*) as "total"' ]
+
+  const cteString = cte.length !== 0
+    ? 'WITH ' + cte.join(', ') + ' '
+    : ''
+
+  let query = cteString +
+    'SELECT ' + attributes.join(', ') + ' ' +
+    'FROM "video" ' + joins.join(' ') + ' ' +
+    'WHERE ' + and.join(' AND ') + ' ' +
+    group + ' ' +
+    having + ' '
+
+  if (options.isCount !== true) {
+    const count = parseInt(options.count + '', 10)
+    const start = parseInt(options.start + '', 10)
+
+    query += buildOrder(model, options.sort) + ' ' +
+      'LIMIT ' + count + ' ' +
+      'OFFSET ' + start
+  }
+
+  return { query, replacements }
+}
+
+function buildOrder (model: typeof Model, value: string) {
+  const { direction, field } = buildDirectionAndField(value)
+  if (field.match(/^[a-zA-Z]+$/) === null) throw new Error('Invalid sort column ' + field)
+
+  if (field.toLowerCase() === 'random') return 'ORDER BY RANDOM()'
+
+  if (field.toLowerCase() === 'trending') { // Sort by aggregation
+    return `ORDER BY COALESCE(SUM("videoView"."views"), 0) ${direction}, "video"."views" ${direction}`
+  }
+
+  let firstSort: string
+
+  if (field.toLowerCase() === 'match') { // Search
+    firstSort = '"similarity"'
+  } else {
+    firstSort = `"video"."${field}"`
+  }
+
+  return `ORDER BY ${firstSort} ${direction}, "video"."id" ASC`
+}
+
+export {
+  buildListQuery
+}