feat: notifications (#17701)

* feat: notifications

* UI works

* chore: pr feedback

* initial fetch and clear notification upon logging out

* fix: merge

---------

Co-authored-by: Alex Tran <alex.tran1502@gmail.com>

server/src/repositories/notification.repository.ts

@@ -0,0 +1,103 @@
+import { Insertable, Kysely, Updateable } from 'kysely';
+import { DateTime } from 'luxon';
+import { InjectKysely } from 'nestjs-kysely';
+import { columns } from 'src/database';
+import { DB, Notifications } from 'src/db';
+import { DummyValue, GenerateSql } from 'src/decorators';
+import { NotificationSearchDto } from 'src/dtos/notification.dto';
+
+export class NotificationRepository {
+  constructor(@InjectKysely() private db: Kysely<DB>) {}
+
+  @GenerateSql({ params: [DummyValue.UUID] })
+  cleanup() {
+    return this.db
+      .deleteFrom('notifications')
+      .where((eb) =>
+        eb.or([
+          // remove soft-deleted notifications
+          eb.and([eb('deletedAt', 'is not', null), eb('deletedAt', '<', DateTime.now().minus({ days: 3 }).toJSDate())]),
+
+          // remove old, read notifications
+          eb.and([
+            // keep recently read messages around for a few days
+            eb('readAt', '>', DateTime.now().minus({ days: 2 }).toJSDate()),
+            eb('createdAt', '<', DateTime.now().minus({ days: 15 }).toJSDate()),
+          ]),
+
+          eb.and([
+            // remove super old, unread notifications
+            eb('readAt', '=', null),
+            eb('createdAt', '<', DateTime.now().minus({ days: 30 }).toJSDate()),
+          ]),
+        ]),
+      )
+      .execute();
+  }
+
+  @GenerateSql({ params: [DummyValue.UUID, {}] }, { name: 'unread', params: [DummyValue.UUID, { unread: true }] })
+  search(userId: string, dto: NotificationSearchDto) {
+    return this.db
+      .selectFrom('notifications')
+      .select(columns.notification)
+      .where((qb) =>
+        qb.and({
+          userId,
+          id: dto.id,
+          level: dto.level,
+          type: dto.type,
+          readAt: dto.unread ? null : undefined,
+        }),
+      )
+      .where('deletedAt', 'is', null)
+      .orderBy('createdAt', 'desc')
+      .execute();
+  }
+
+  create(notification: Insertable<Notifications>) {
+    return this.db
+      .insertInto('notifications')
+      .values(notification)
+      .returning(columns.notification)
+      .executeTakeFirstOrThrow();
+  }
+
+  get(id: string) {
+    return this.db
+      .selectFrom('notifications')
+      .select(columns.notification)
+      .where('id', '=', id)
+      .where('deletedAt', 'is not', null)
+      .executeTakeFirst();
+  }
+
+  update(id: string, notification: Updateable<Notifications>) {
+    return this.db
+      .updateTable('notifications')
+      .set(notification)
+      .where('deletedAt', 'is', null)
+      .where('id', '=', id)
+      .returning(columns.notification)
+      .executeTakeFirstOrThrow();
+  }
+
+  async updateAll(ids: string[], notification: Updateable<Notifications>) {
+    await this.db.updateTable('notifications').set(notification).where('id', 'in', ids).execute();
+  }
+
+  async delete(id: string) {
+    await this.db
+      .updateTable('notifications')
+      .set({ deletedAt: DateTime.now().toJSDate() })
+      .where('id', '=', id)
+      .execute();
+  }
+
+  async deleteAll(ids: string[]) {
+    await this.db
+      .updateTable('notifications')
+      .set({ deletedAt: DateTime.now().toJSDate() })
+      .where('id', 'in', ids)
+      .execute();
+  }
+}