1 files changed, 53 insertions, 0 deletions
diff --git a/packages/backend/src/core/UserService.ts b/packages/backend/src/core/UserService.ts
new file mode 100644
index 0000000000..d16e1be615
--- /dev/null
+++ b/packages/backend/src/core/UserService.ts
@@ -0,0 +1,53 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and other misskey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import type { FollowingsRepository, UsersRepository } from '@/models/_.js';
+import type { MiUser } from '@/models/User.js';
+import { DI } from '@/di-symbols.js';
+import { bindThis } from '@/decorators.js';
+
+@Injectable()
+export class UserService {
+	constructor(
+		@Inject(DI.usersRepository)
+		private usersRepository: UsersRepository,
+
+		@Inject(DI.followingsRepository)
+		private followingsRepository: FollowingsRepository,
+	) {
+	}
+
+	@bindThis
+	public async updateLastActiveDate(user: MiUser): Promise<void> {
+		if (user.isHibernated) {
+			const result = await this.usersRepository.createQueryBuilder().update()
+				.set({
+					lastActiveDate: new Date(),
+				})
+				.where('id = :id', { id: user.id })
+				.returning('*')
+				.execute()
+				.then((response) => {
+					return response.raw[0];
+				});
+			const wokeUp = result.isHibernated;
+			if (wokeUp) {
+				this.usersRepository.update(user.id, {
+					isHibernated: false,
+				});
+				this.followingsRepository.update({
+					followerId: user.id,
+				}, {
+					isFollowerHibernated: false,
+				});
+			}
+		} else {
+			this.usersRepository.update(user.id, {
+				lastActiveDate: new Date(),
+			});
+		}
+	}
+}