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

3 files changed, 28 insertions, 3 deletions

diff --git a/packages/backend/src/core/AbuseReportNotificationService.ts b/packages/backend/src/core/AbuseReportNotificationService.ts
index 42e5931212..7be5335885 100644
--- a/packages/backend/src/core/AbuseReportNotificationService.ts
+++ b/packages/backend/src/core/AbuseReportNotificationService.ts
@@ -44,7 +44,7 @@ export class AbuseReportNotificationService implements OnApplicationShutdown {
 
 	/**
 	 * 管理者用Redisイベントを用いて{@link abuseReports}の内容を管理者各位に通知する.
-	 * 通知先ユーザは{@link RoleService.getModeratorIds}の取得結果に依る.
+	 * 通知先ユーザは{@link getModeratorIds}の取得結果に依る.
 	 *
 	 * @see RoleService.getModeratorIds
 	 * @see GlobalEventService.publishAdminStream
diff --git a/packages/backend/src/core/SignupService.ts b/packages/backend/src/core/SignupService.ts
index 5522ecd6cc..de45898328 100644
--- a/packages/backend/src/core/SignupService.ts
+++ b/packages/backend/src/core/SignupService.ts
@@ -21,6 +21,7 @@ import { bindThis } from '@/decorators.js';
 import UsersChart from '@/core/chart/charts/users.js';
 import { UtilityService } from '@/core/UtilityService.js';
 import { MetaService } from '@/core/MetaService.js';
+import { UserService } from '@/core/UserService.js';
 
 @Injectable()
 export class SignupService {
@@ -35,6 +36,7 @@ export class SignupService {
 		private usedUsernamesRepository: UsedUsernamesRepository,
 
 		private utilityService: UtilityService,
+		private userService: UserService,
 		private userEntityService: UserEntityService,
 		private idService: IdService,
 		private metaService: MetaService,
@@ -148,7 +150,8 @@ export class SignupService {
 			}));
 		});
 
-		this.usersChart.update(account, true);
+		this.usersChart.update(account, true).then();
+		this.userService.notifySystemWebhook(account, 'userCreated').then();
 
 		return { account, secret };
 	}
diff --git a/packages/backend/src/core/UserService.ts b/packages/backend/src/core/UserService.ts
index 72fa4d928d..9b1961c631 100644
--- a/packages/backend/src/core/UserService.ts
+++ b/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,
+			);
+		}
+	}
 }