feat: groups

server/src/repositories/group-user.repository.ts

@@ -0,0 +1,71 @@
+import { Injectable } from '@nestjs/common';
+import { Kysely, NotNull } from 'kysely';
+import { jsonObjectFrom } from 'kysely/helpers/postgres';
+import { InjectKysely } from 'nestjs-kysely';
+import { columns } from 'src/database';
+import { Chunked, DummyValue, GenerateSql } from 'src/decorators';
+import { DB } from 'src/schema';
+
+type GroupUser = { groupId: string; userId: string };
+
+@Injectable()
+export class GroupUserRepository {
+  constructor(@InjectKysely() private db: Kysely<DB>) {}
+
+  @GenerateSql({ params: [DummyValue.UUID] })
+  getAll(groupId: string) {
+    return this.db
+      .selectFrom('group_user')
+      .where('groupId', '=', groupId)
+      .innerJoin('user', 'group_user.userId', 'user.id')
+      .orderBy('user.name', 'asc')
+      .select((eb) =>
+        jsonObjectFrom(
+          eb.selectFrom('user as user2').select(columns.userWithPrefix).whereRef('user2.id', '=', 'group_user.userId'),
+        ).as('user'),
+      )
+      .$narrowType<{ user: NotNull }>()
+      .select(['group_user.createdAt', 'group_user.updatedAt'])
+      .execute();
+  }
+
+  @GenerateSql({ params: [DummyValue.UUID, [DummyValue.UUID]] })
+  @Chunked({ paramIndex: 1 })
+  createAll(groupId: string, userIds: string[]) {
+    return this.db
+      .insertInto('group_user')
+      .values(userIds.map((userId) => ({ userId, groupId })))
+      .onConflict((oc) => oc.doNothing())
+      .returning(['createdAt', 'updatedAt'])
+      .returning((eb) =>
+        jsonObjectFrom(
+          eb.selectFrom('user as user2').whereRef('group_user.userId', '=', 'user2.id').select(columns.userWithPrefix),
+        ).as('user'),
+      )
+      .$narrowType<{ user: NotNull }>()
+      .execute();
+  }
+
+  @GenerateSql({ params: [DummyValue.UUID, [DummyValue.UUID]] })
+  @Chunked({ paramIndex: 1 })
+  deleteAll(groupId: string, usersIds: string[]) {
+    if (usersIds.length === 0) {
+      return Promise.resolve();
+    }
+    return this.db.deleteFrom('group_user').where('groupId', '=', groupId).where('userId', 'in', usersIds).execute();
+  }
+
+  get({ groupId, userId }: GroupUser) {
+    return this.db
+      .selectFrom('group_user')
+      .innerJoin('group', 'group.id', 'group_user.groupId')
+      .select(['group.id', 'group.name', 'group.description'])
+      .where('group_user.groupId', '=', groupId)
+      .where('group_user.userId', '=', userId)
+      .execute();
+  }
+
+  delete({ userId, groupId }: GroupUser) {
+    return this.db.deleteFrom('group_user').where('userId', '=', userId).where('groupId', '=', groupId).execute();
+  }
+}