Refactor model utils

1 files changed, 68 insertions, 0 deletions

diff --git a/server/models/shared/sql.ts b/server/models/shared/sql.ts
new file mode 100644
index 000000000..5aaeb49f0
--- /dev/null
+++ b/server/models/shared/sql.ts
@@ -0,0 +1,68 @@
+import { literal, Model, ModelStatic } from 'sequelize'
+import { forceNumber } from '@shared/core-utils'
+import { AttributesOnly } from '@shared/typescript-utils'
+
+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)'
+  )
+}
+
+function buildBlockedAccountSQL (blockerIds: number[]) {
+  const blockerIdsString = blockerIds.join(', ')
+
+  return 'SELECT "targetAccountId" AS "id" FROM "accountBlocklist" WHERE "accountId" IN (' + blockerIdsString + ')' +
+    ' UNION ' +
+    '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 = forceNumber(actorId)
+
+  return '(' +
+    'SELECT "actor"."serverId" FROM "actorFollow" ' +
+    'INNER JOIN "actor" ON actor.id = "actorFollow"."targetActorId" ' +
+    'WHERE "actorFollow"."actorId" = ' + actorIdNumber +
+    ')'
+}
+
+function buildSQLAttributes<M extends Model> (options: {
+  model: ModelStatic<M>
+  tableName: string
+
+  excludeAttributes?: Exclude<keyof AttributesOnly<M>, symbol>[]
+  aliasPrefix?: string
+}) {
+  const { model, tableName, aliasPrefix, excludeAttributes } = options
+
+  const attributes = Object.keys(model.getAttributes()) as Exclude<keyof AttributesOnly<M>, symbol>[]
+
+  return attributes
+    .filter(a => {
+      if (!excludeAttributes) return true
+      if (excludeAttributes.includes(a)) return false
+
+      return true
+    })
+    .map(a => {
+      return `"${tableName}"."${a}" AS "${aliasPrefix || ''}${a}"`
+    })
+}
+
+// ---------------------------------------------------------------------------
+
+export {
+  buildSQLAttributes,
+  buildBlockedAccountSQL,
+  buildServerIdsFollowedBy,
+  buildLocalAccountIdsIn,
+  buildLocalActorIdsIn
+}