feature: ユーザ作成時にSystemWebhookを発信できるようにする (#14321)

* feature: ユーザ作成時にSystemWebhookを発信できるようにする

* fix CHANGELOG.md

packages/backend/src/core/UserService.ts

@@ -8,15 +8,18 @@ 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';
+import { SystemWebhookService } from '@/core/SystemWebhookService.js';
+import { UserEntityService } from '@/core/entities/UserEntityService.js';
 
 @Injectable()
 export class UserService {
 	constructor(
 		@Inject(DI.usersRepository)
 		private usersRepository: UsersRepository,
-
 		@Inject(DI.followingsRepository)
 		private followingsRepository: FollowingsRepository,
+		private systemWebhookService: SystemWebhookService,
+		private userEntityService: UserEntityService,
 	) {
 	}
 
@@ -50,4 +53,23 @@ export class UserService {
 			});
 		}
 	}
+
+	/**
+	 * SystemWebhookを用いてユーザに関する操作内容を管理者各位に通知する.
+	 * ここではJobQueueへのエンキューのみを行うため、即時実行されない.
+	 *
+	 * @see SystemWebhookService.enqueueSystemWebhook
+	 */
+	@bindThis
+	public async notifySystemWebhook(user: MiUser, type: 'userCreated') {
+		const packedUser = await this.userEntityService.pack(user, null, { schema: 'UserLite' });
+		const recipientWebhookIds = await this.systemWebhookService.fetchSystemWebhooks({ isActive: true, on: [type] });
+		for (const webhookId of recipientWebhookIds) {
+			await this.systemWebhookService.enqueueSystemWebhook(
+				webhookId,
+				type,
+				packedUser,
+			);
+		}
+	}
 }