feat: 通報を受けた際にメールまたはWebhookで通知を送出出来るようにする (#13758)

* feat: 通報を受けた際にメールまたはWebhookで通知を送出出来るようにする * モデログに対応＆エンドポイントを単一オブジェクトでのサポートに変更（API経由で大量に作るシチュエーションもないと思うので） * fix spdx * fix migration * fix migration * fix models * add e2e webhook * tweak * fix modlog * fix bugs * add tests and fix bugs * add tests and fix bugs * add tests * fix path * regenerate locale * 混入除去 * 混入除去 * add abuseReportResolved * fix pnpm-lock.yaml * add abuseReportResolved test * fix bugs * fix ui * add tests * fix CHANGELOG.md * add tests * add RoleService.getModeratorIds tests * WebhookServiceをUserとSystemに分割 * fix CHANGELOG.md * fix test * insertOneを使う用に * fix * regenerate locales * revert version * separate webhook job queue * fix * 🎨 * Update QueueProcessorService.ts --------- Co-authored-by: osamu <46447427+sam-osamu@users.noreply.github.com> Co-authored-by: syuilo <4439005+syuilo@users.noreply.github.com>
2024-06-08 15:34:19 +09:00
parent e0cf5b2402
commit 61fae45390
79 changed files with 6527 additions and 369 deletions
--- a/packages/backend/src/core/AbuseReportNotificationService.ts
+++ b/packages/backend/src/core/AbuseReportNotificationService.ts
@@ -0,0 +1,406 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable, type OnApplicationShutdown } from '@nestjs/common';
+import { Brackets, In, IsNull, Not } from 'typeorm';
+import * as Redis from 'ioredis';
+import sanitizeHtml from 'sanitize-html';
+import { DI } from '@/di-symbols.js';
+import { bindThis } from '@/decorators.js';
+import { GlobalEvents, GlobalEventService } from '@/core/GlobalEventService.js';
+import { isNotNull } from '@/misc/is-not-null.js';
+import type {
+	AbuseReportNotificationRecipientRepository,
+	MiAbuseReportNotificationRecipient,
+	MiAbuseUserReport,
+	MiUser,
+} from '@/models/_.js';
+import { EmailService } from '@/core/EmailService.js';
+import { MetaService } from '@/core/MetaService.js';
+import { RoleService } from '@/core/RoleService.js';
+import { RecipientMethod } from '@/models/AbuseReportNotificationRecipient.js';
+import { ModerationLogService } from '@/core/ModerationLogService.js';
+import { SystemWebhookService } from '@/core/SystemWebhookService.js';
+import { IdService } from './IdService.js';
+
+@Injectable()
+export class AbuseReportNotificationService implements OnApplicationShutdown {
+	constructor(
+		@Inject(DI.abuseReportNotificationRecipientRepository)
+		private abuseReportNotificationRecipientRepository: AbuseReportNotificationRecipientRepository,
+		@Inject(DI.redisForSub)
+		private redisForSub: Redis.Redis,
+		private idService: IdService,
+		private roleService: RoleService,
+		private systemWebhookService: SystemWebhookService,
+		private emailService: EmailService,
+		private metaService: MetaService,
+		private moderationLogService: ModerationLogService,
+		private globalEventService: GlobalEventService,
+	) {
+		this.redisForSub.on('message', this.onMessage);
+	}
+
+	/**
+	 * 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.
+	 *
+	 * @see RoleService.getModeratorIds
+	 * @see GlobalEventService.publishAdminStream
+	 */
+	@bindThis
+	public async notifyAdminStream(abuseReports: MiAbuseUserReport[]) {
+		if (abuseReports.length <= 0) {
+			return;
+		}
+
+		const moderatorIds = await this.roleService.getModeratorIds(true, true);
+
+		for (const moderatorId of moderatorIds) {
+			for (const abuseReport of abuseReports) {
+				this.globalEventService.publishAdminStream(
+					moderatorId,
+					'newAbuseUserReport',
+					{
+						id: abuseReport.id,
+						targetUserId: abuseReport.targetUserId,
+						reporterId: abuseReport.reporterId,
+						comment: abuseReport.comment,
+					},
+				);
+			}
+		}
+	}
+
+	/**
+	 * Mailを用いて{@link abuseReports}の内容を管理者各位に通知する.
+	 * メールアドレスの送信先は以下の通り.
+	 * - モデレータ権限所有者ユーザ(設定画面からメールアドレスの設定を行っているユーザに限る)
+	 * - metaテーブルに設定されているメールアドレス
+	 *
+	 * @see EmailService.sendEmail
+	 */
+	@bindThis
+	public async notifyMail(abuseReports: MiAbuseUserReport[]) {
+		if (abuseReports.length <= 0) {
+			return;
+		}
+
+		const recipientEMailAddresses = await this.fetchEMailRecipients().then(it => it
+			.filter(it => it.isActive && it.userProfile?.emailVerified)
+			.map(it => it.userProfile?.email)
+			.filter(isNotNull),
+		);
+
+		// 送信先の鮮度を保つため、毎回取得する
+		const meta = await this.metaService.fetch(true);
+		recipientEMailAddresses.push(
+			...(meta.email ? [meta.email] : []),
+		);
+
+		if (recipientEMailAddresses.length <= 0) {
+			return;
+		}
+
+		for (const mailAddress of recipientEMailAddresses) {
+			await Promise.all(
+				abuseReports.map(it => {
+					// TODO: 送信処理はJobQueue化したい
+					return this.emailService.sendEmail(
+						mailAddress,
+						'New Abuse Report',
+						sanitizeHtml(it.comment),
+						sanitizeHtml(it.comment),
+					);
+				}),
+			);
+		}
+	}
+
+	/**
+	 * SystemWebhookを用いて{@link abuseReports}の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(
+		abuseReports: MiAbuseUserReport[],
+		type: 'abuseReport' | 'abuseReportResolved',
+	) {
+		if (abuseReports.length <= 0) {
+			return;
+		}
+
+		const recipientWebhookIds = await this.fetchWebhookRecipients()
+			.then(it => it
+				.filter(it => it.isActive && it.systemWebhookId && it.method === 'webhook')
+				.map(it => it.systemWebhookId)
+				.filter(isNotNull));
+		for (const webhookId of recipientWebhookIds) {
+			await Promise.all(
+				abuseReports.map(it => {
+					return this.systemWebhookService.enqueueSystemWebhook(
+						webhookId,
+						type,
+						it,
+					);
+				}),
+			);
+		}
+	}
+
+	/**
+	 * 通報の通知先一覧を取得する.
+	 *
+	 * @param {Object} [params] クエリの取得条件
+	 * @param {Object} [params.method] 取得する通知先の通知方法
+	 * @param {Object} [opts] 動作時の詳細なオプション
+	 * @param {boolean} [opts.removeUnauthorized] 副作用としてモデレータ権限を持たない送信先ユーザをDBから削除するかどうか(default: true)
+	 * @param {boolean} [opts.joinUser] 通知先のユーザ情報をJOINするかどうか(default: false)
+	 * @param {boolean} [opts.joinSystemWebhook] 通知先のSystemWebhook情報をJOINするかどうか(default: false)
+	 * @see removeUnauthorizedRecipientUsers
+	 */
+	@bindThis
+	public async fetchRecipients(
+		params?: {
+			ids?: MiAbuseReportNotificationRecipient['id'][],
+			method?: RecipientMethod[],
+		},
+		opts?: {
+			removeUnauthorized?: boolean,
+			joinUser?: boolean,
+			joinSystemWebhook?: boolean,
+		},
+	): Promise<MiAbuseReportNotificationRecipient[]> {
+		const query = this.abuseReportNotificationRecipientRepository.createQueryBuilder('recipient');
+
+		if (opts?.joinUser) {
+			query.innerJoinAndSelect('user', 'user', 'recipient.userId = user.id');
+			query.innerJoinAndSelect('recipient.userProfile', 'userProfile');
+		}
+
+		if (opts?.joinSystemWebhook) {
+			query.innerJoinAndSelect('recipient.systemWebhook', 'systemWebhook');
+		}
+
+		if (params?.ids) {
+			query.andWhere({ id: In(params.ids) });
+		}
+
+		if (params?.method) {
+			query.andWhere(new Brackets(qb => {
+				if (params.method?.includes('email')) {
+					qb.orWhere({ method: 'email', userId: Not(IsNull()) });
+				}
+				if (params.method?.includes('webhook')) {
+					qb.orWhere({ method: 'webhook', userId: IsNull() });
+				}
+			}));
+		}
+
+		const recipients = await query.getMany();
+		if (recipients.length <= 0) {
+			return [];
+		}
+
+		// アサイン有効期限切れはイベントで拾えないので、このタイミングでチェック及び削除（オプション）
+		return (opts?.removeUnauthorized ?? true)
+			? await this.removeUnauthorizedRecipientUsers(recipients)
+			: recipients;
+	}
+
+	/**
+	 * EMailの通知先一覧を取得する.
+	 * リレーション先の{@link MiUser}および{@link MiUserProfile}も同時に取得する.
+	 *
+	 * @param {Object} [opts]
+	 * @param {boolean} [opts.removeUnauthorized] 副作用としてモデレータ権限を持たない送信先ユーザをDBから削除するかどうか(default: true)
+	 * @see removeUnauthorizedRecipientUsers
+	 */
+	@bindThis
+	public async fetchEMailRecipients(opts?: {
+		removeUnauthorized?: boolean
+	}): Promise<MiAbuseReportNotificationRecipient[]> {
+		return this.fetchRecipients({ method: ['email'] }, { joinUser: true, ...opts });
+	}
+
+	/**
+	 * Webhookの通知先一覧を取得する.
+	 * リレーション先の{@link MiSystemWebhook}も同時に取得する.
+	 */
+	@bindThis
+	public fetchWebhookRecipients(): Promise<MiAbuseReportNotificationRecipient[]> {
+		return this.fetchRecipients({ method: ['webhook'] }, { joinSystemWebhook: true });
+	}
+
+	/**
+	 * 通知先を作成する.
+	 */
+	@bindThis
+	public async createRecipient(
+		params: {
+			isActive: MiAbuseReportNotificationRecipient['isActive'];
+			name: MiAbuseReportNotificationRecipient['name'];
+			method: MiAbuseReportNotificationRecipient['method'];
+			userId: MiAbuseReportNotificationRecipient['userId'];
+			systemWebhookId: MiAbuseReportNotificationRecipient['systemWebhookId'];
+		},
+		updater: MiUser,
+	): Promise<MiAbuseReportNotificationRecipient> {
+		const id = this.idService.gen();
+		await this.abuseReportNotificationRecipientRepository.insert({
+			...params,
+			id,
+		});
+
+		const created = await this.abuseReportNotificationRecipientRepository.findOneByOrFail({ id: id });
+
+		this.moderationLogService
+			.log(updater, 'createAbuseReportNotificationRecipient', {
+				recipientId: id,
+				recipient: created,
+			})
+			.then();
+
+		return created;
+	}
+
+	/**
+	 * 通知先を更新する.
+	 */
+	@bindThis
+	public async updateRecipient(
+		params: {
+			id: MiAbuseReportNotificationRecipient['id'];
+			isActive: MiAbuseReportNotificationRecipient['isActive'];
+			name: MiAbuseReportNotificationRecipient['name'];
+			method: MiAbuseReportNotificationRecipient['method'];
+			userId: MiAbuseReportNotificationRecipient['userId'];
+			systemWebhookId: MiAbuseReportNotificationRecipient['systemWebhookId'];
+		},
+		updater: MiUser,
+	): Promise<MiAbuseReportNotificationRecipient> {
+		const beforeEntity = await this.abuseReportNotificationRecipientRepository.findOneByOrFail({ id: params.id });
+
+		await this.abuseReportNotificationRecipientRepository.update(params.id, {
+			isActive: params.isActive,
+			updatedAt: new Date(),
+			name: params.name,
+			method: params.method,
+			userId: params.userId,
+			systemWebhookId: params.systemWebhookId,
+		});
+
+		const afterEntity = await this.abuseReportNotificationRecipientRepository.findOneByOrFail({ id: params.id });
+
+		this.moderationLogService
+			.log(updater, 'updateAbuseReportNotificationRecipient', {
+				recipientId: params.id,
+				before: beforeEntity,
+				after: afterEntity,
+			})
+			.then();
+
+		return afterEntity;
+	}
+
+	/**
+	 * 通知先を削除する.
+	 */
+	@bindThis
+	public async deleteRecipient(
+		id: MiAbuseReportNotificationRecipient['id'],
+		updater: MiUser,
+	) {
+		const entity = await this.abuseReportNotificationRecipientRepository.findBy({ id });
+
+		await this.abuseReportNotificationRecipientRepository.delete(id);
+
+		this.moderationLogService
+			.log(updater, 'deleteAbuseReportNotificationRecipient', {
+				recipientId: id,
+				recipient: entity,
+			})
+			.then();
+	}
+
+	/**
+	 * モデレータ権限を持たない(*1)通知先ユーザを削除する.
+	 *
+	 * *1: 以下の両方を満たすものの事を言う
+	 * - 通知先にユーザIDが設定されている
+	 * - 付与ロールにモデレータ権限がない or アサインの有効期限が切れている
+	 *
+	 * @param recipients 通知先一覧の配列
+	 * @returns {@lisk recipients}からモデレータ権限を持たない通知先を削除した配列
+	 */
+	@bindThis
+	private async removeUnauthorizedRecipientUsers(recipients: MiAbuseReportNotificationRecipient[]): Promise<MiAbuseReportNotificationRecipient[]> {
+		const userRecipients = recipients.filter(it => it.userId !== null);
+		const recipientUserIds = new Set(userRecipients.map(it => it.userId).filter(isNotNull));
+		if (recipientUserIds.size <= 0) {
+			// ユーザが通知先として設定されていない場合、この関数での処理を行うべきレコードが無い
+			return recipients;
+		}
+
+		// モデレータ権限の有無で通知先設定を振り分ける
+		const authorizedUserIds = await this.roleService.getModeratorIds(true, true);
+		const authorizedUserRecipients = Array.of<MiAbuseReportNotificationRecipient>();
+		const unauthorizedUserRecipients = Array.of<MiAbuseReportNotificationRecipient>();
+		for (const recipient of userRecipients) {
+			// eslint-disable-next-line
+			if (authorizedUserIds.includes(recipient.userId!)) {
+				authorizedUserRecipients.push(recipient);
+			} else {
+				unauthorizedUserRecipients.push(recipient);
+			}
+		}
+
+		// モデレータ権限を持たない通知先をDBから削除する
+		if (unauthorizedUserRecipients.length > 0) {
+			await this.abuseReportNotificationRecipientRepository.delete(unauthorizedUserRecipients.map(it => it.id));
+		}
+		const nonUserRecipients = recipients.filter(it => it.userId === null);
+		return [...nonUserRecipients, ...authorizedUserRecipients].sort((a, b) => a.id.localeCompare(b.id));
+	}
+
+	@bindThis
+	private async onMessage(_: string, data: string): Promise<void> {
+		const obj = JSON.parse(data);
+		if (obj.channel !== 'internal') {
+			return;
+		}
+
+		const { type } = obj.message as GlobalEvents['internal']['payload'];
+		switch (type) {
+			case 'roleUpdated':
+			case 'roleDeleted':
+			case 'userRoleUnassigned': {
+				// 場合によってはキャッシュ更新よりも先にここが呼ばれてしまう可能性があるのでnextTickで遅延実行
+				process.nextTick(async () => {
+					const recipients = await this.abuseReportNotificationRecipientRepository.findBy({
+						userId: Not(IsNull()),
+					});
+					await this.removeUnauthorizedRecipientUsers(recipients);
+				});
+				break;
+			}
+			default: {
+				break;
+			}
+		}
+	}
+
+	@bindThis
+	public dispose(): void {
+		this.redisForSub.off('message', this.onMessage);
+	}
+
+	@bindThis
+	public onApplicationShutdown(signal?: string | undefined): void {
+		this.dispose();
+	}
+}
--- a/packages/backend/src/core/AbuseReportService.ts
+++ b/packages/backend/src/core/AbuseReportService.ts
@@ -0,0 +1,128 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import { In } from 'typeorm';
+import { DI } from '@/di-symbols.js';
+import { bindThis } from '@/decorators.js';
+import type { AbuseUserReportsRepository, MiAbuseUserReport, MiUser, UsersRepository } from '@/models/_.js';
+import { AbuseReportNotificationService } from '@/core/AbuseReportNotificationService.js';
+import { QueueService } from '@/core/QueueService.js';
+import { InstanceActorService } from '@/core/InstanceActorService.js';
+import { ApRendererService } from '@/core/activitypub/ApRendererService.js';
+import { ModerationLogService } from '@/core/ModerationLogService.js';
+import { IdService } from './IdService.js';
+
+@Injectable()
+export class AbuseReportService {
+	constructor(
+		@Inject(DI.abuseUserReportsRepository)
+		private abuseUserReportsRepository: AbuseUserReportsRepository,
+		@Inject(DI.usersRepository)
+		private usersRepository: UsersRepository,
+		private idService: IdService,
+		private abuseReportNotificationService: AbuseReportNotificationService,
+		private queueService: QueueService,
+		private instanceActorService: InstanceActorService,
+		private apRendererService: ApRendererService,
+		private moderationLogService: ModerationLogService,
+	) {
+	}
+
+	/**
+	 * ユーザからの通報をDBに記録し、その内容を下記の手段で管理者各位に通知する.
+	 * - 管理者用Redisイベント
+	 * - EMail（モデレータ権限所有者ユーザ＋metaテーブルに設定されているメールアドレス）
+	 * - SystemWebhook
+	 *
+	 * @param params 通報内容. もし複数件の通報に対応した時のために、あらかじめ複数件を処理できる前提で考える
+	 * @see AbuseReportNotificationService.notify
+	 */
+	@bindThis
+	public async report(params: {
+		targetUserId: MiAbuseUserReport['targetUserId'],
+		targetUserHost: MiAbuseUserReport['targetUserHost'],
+		reporterId: MiAbuseUserReport['reporterId'],
+		reporterHost: MiAbuseUserReport['reporterHost'],
+		comment: string,
+	}[]) {
+		const entities = params.map(param => {
+			return {
+				id: this.idService.gen(),
+				targetUserId: param.targetUserId,
+				targetUserHost: param.targetUserHost,
+				reporterId: param.reporterId,
+				reporterHost: param.reporterHost,
+				comment: param.comment,
+			};
+		});
+
+		const reports = Array.of<MiAbuseUserReport>();
+		for (const entity of entities) {
+			const report = await this.abuseUserReportsRepository.insertOne(entity);
+			reports.push(report);
+		}
+
+		return Promise.all([
+			this.abuseReportNotificationService.notifyAdminStream(reports),
+			this.abuseReportNotificationService.notifySystemWebhook(reports, 'abuseReport'),
+			this.abuseReportNotificationService.notifyMail(reports),
+		]);
+	}
+
+	/**
+	 * 通報を解決し、その内容を下記の手段で管理者各位に通知する.
+	 * - SystemWebhook
+	 *
+	 * @param params 通報内容. もし複数件の通報に対応した時のために、あらかじめ複数件を処理できる前提で考える
+	 * @param operator 通報を処理したユーザ
+	 * @see AbuseReportNotificationService.notify
+	 */
+	@bindThis
+	public async resolve(
+		params: {
+			reportId: string;
+			forward: boolean;
+		}[],
+		operator: MiUser,
+	) {
+		const paramsMap = new Map(params.map(it => [it.reportId, it]));
+		const reports = await this.abuseUserReportsRepository.findBy({
+			id: In(params.map(it => it.reportId)),
+		});
+
+		for (const report of reports) {
+			// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
+			const ps = paramsMap.get(report.id)!;
+
+			await this.abuseUserReportsRepository.update(report.id, {
+				resolved: true,
+				assigneeId: operator.id,
+				forwarded: ps.forward && report.targetUserHost !== null,
+			});
+
+			if (ps.forward && report.targetUserHost != null) {
+				const actor = await this.instanceActorService.getInstanceActor();
+				const targetUser = await this.usersRepository.findOneByOrFail({ id: report.targetUserId });
+
+				// eslint-disable-next-line
+				const flag = this.apRendererService.renderFlag(actor, targetUser.uri!, report.comment);
+				const contextAssignedFlag = this.apRendererService.addContext(flag);
+				this.queueService.deliver(actor, contextAssignedFlag, targetUser.inbox, false);
+			}
+
+			this.moderationLogService
+				.log(operator, 'resolveAbuseReport', {
+					reportId: report.id,
+					report: report,
+					forwarded: ps.forward && report.targetUserHost !== null,
+				})
+				.then();
+		}
+
+		return this.abuseUserReportsRepository.findBy({ id: In(reports.map(it => it.id)) })
+			.then(reports => this.abuseReportNotificationService.notifySystemWebhook(reports, 'abuseReportResolved'));
+	}
+}
--- a/packages/backend/src/core/CoreModule.ts
+++ b/packages/backend/src/core/CoreModule.ts
@@ -5,6 +5,13 @@

 import { Module } from '@nestjs/common';
 import { FanoutTimelineEndpointService } from '@/core/FanoutTimelineEndpointService.js';
+import { AbuseReportService } from '@/core/AbuseReportService.js';
+import { SystemWebhookEntityService } from '@/core/entities/SystemWebhookEntityService.js';
+import {
+	AbuseReportNotificationRecipientEntityService,
+} from '@/core/entities/AbuseReportNotificationRecipientEntityService.js';
+import { AbuseReportNotificationService } from '@/core/AbuseReportNotificationService.js';
+import { SystemWebhookService } from '@/core/SystemWebhookService.js';
 import { AccountMoveService } from './AccountMoveService.js';
 import { AccountUpdateService } from './AccountUpdateService.js';
 import { AiService } from './AiService.js';
@@ -56,7 +63,7 @@ import { UserMutingService } from './UserMutingService.js';
 import { UserSuspendService } from './UserSuspendService.js';
 import { UserAuthService } from './UserAuthService.js';
 import { VideoProcessingService } from './VideoProcessingService.js';
-import { WebhookService } from './WebhookService.js';
+import { UserWebhookService } from './UserWebhookService.js';
 import { ProxyAccountService } from './ProxyAccountService.js';
 import { UtilityService } from './UtilityService.js';
 import { FileInfoService } from './FileInfoService.js';
@@ -144,6 +151,8 @@ import type { Provider } from '@nestjs/common';

 //#region 文字列ベースでのinjection用(循環参照対応のため)
 const $LoggerService: Provider = { provide: 'LoggerService', useExisting: LoggerService };
+const $AbuseReportService: Provider = { provide: 'AbuseReportService', useExisting: AbuseReportService };
+const $AbuseReportNotificationService: Provider = { provide: 'AbuseReportNotificationService', useExisting: AbuseReportNotificationService };
 const $AccountMoveService: Provider = { provide: 'AccountMoveService', useExisting: AccountMoveService };
 const $AccountUpdateService: Provider = { provide: 'AccountUpdateService', useExisting: AccountUpdateService };
 const $AiService: Provider = { provide: 'AiService', useExisting: AiService };
@@ -196,7 +205,8 @@ const $UserMutingService: Provider = { provide: 'UserMutingService', useExisting
 const $UserSuspendService: Provider = { provide: 'UserSuspendService', useExisting: UserSuspendService };
 const $UserAuthService: Provider = { provide: 'UserAuthService', useExisting: UserAuthService };
 const $VideoProcessingService: Provider = { provide: 'VideoProcessingService', useExisting: VideoProcessingService };
-const $WebhookService: Provider = { provide: 'WebhookService', useExisting: WebhookService };
+const $UserWebhookService: Provider = { provide: 'UserWebhookService', useExisting: UserWebhookService };
+const $SystemWebhookService: Provider = { provide: 'SystemWebhookService', useExisting: SystemWebhookService };
 const $UtilityService: Provider = { provide: 'UtilityService', useExisting: UtilityService };
 const $FileInfoService: Provider = { provide: 'FileInfoService', useExisting: FileInfoService };
 const $SearchService: Provider = { provide: 'SearchService', useExisting: SearchService };
@@ -225,6 +235,7 @@ const $ChartManagementService: Provider = { provide: 'ChartManagementService', u

 const $AbuseUserReportEntityService: Provider = { provide: 'AbuseUserReportEntityService', useExisting: AbuseUserReportEntityService };
 const $AnnouncementEntityService: Provider = { provide: 'AnnouncementEntityService', useExisting: AnnouncementEntityService };
+const $AbuseReportNotificationRecipientEntityService: Provider = { provide: 'AbuseReportNotificationRecipientEntityService', useExisting: AbuseReportNotificationRecipientEntityService };
 const $AntennaEntityService: Provider = { provide: 'AntennaEntityService', useExisting: AntennaEntityService };
 const $AppEntityService: Provider = { provide: 'AppEntityService', useExisting: AppEntityService };
 const $AuthSessionEntityService: Provider = { provide: 'AuthSessionEntityService', useExisting: AuthSessionEntityService };
@@ -258,6 +269,7 @@ const $FlashLikeEntityService: Provider = { provide: 'FlashLikeEntityService', u
 const $RoleEntityService: Provider = { provide: 'RoleEntityService', useExisting: RoleEntityService };
 const $ReversiGameEntityService: Provider = { provide: 'ReversiGameEntityService', useExisting: ReversiGameEntityService };
 const $MetaEntityService: Provider = { provide: 'MetaEntityService', useExisting: MetaEntityService };
+const $SystemWebhookEntityService: Provider = { provide: 'SystemWebhookEntityService', useExisting: SystemWebhookEntityService };

 const $ApAudienceService: Provider = { provide: 'ApAudienceService', useExisting: ApAudienceService };
 const $ApDbResolverService: Provider = { provide: 'ApDbResolverService', useExisting: ApDbResolverService };
@@ -285,6 +297,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 	],
 	providers: [
 		LoggerService,
+		AbuseReportService,
+		AbuseReportNotificationService,
 		AccountMoveService,
 		AccountUpdateService,
 		AiService,
@@ -337,7 +351,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		UserSuspendService,
 		UserAuthService,
 		VideoProcessingService,
-		WebhookService,
+		UserWebhookService,
+		SystemWebhookService,
 		UtilityService,
 		FileInfoService,
 		SearchService,
@@ -366,6 +381,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting

 		AbuseUserReportEntityService,
 		AnnouncementEntityService,
+		AbuseReportNotificationRecipientEntityService,
 		AntennaEntityService,
 		AppEntityService,
 		AuthSessionEntityService,
@@ -399,6 +415,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		RoleEntityService,
 		ReversiGameEntityService,
 		MetaEntityService,
+		SystemWebhookEntityService,

 		ApAudienceService,
 		ApDbResolverService,
@@ -422,6 +439,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting

 		//#region 文字列ベースでのinjection用(循環参照対応のため)
 		$LoggerService,
+		$AbuseReportService,
+		$AbuseReportNotificationService,
 		$AccountMoveService,
 		$AccountUpdateService,
 		$AiService,
@@ -474,7 +493,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		$UserSuspendService,
 		$UserAuthService,
 		$VideoProcessingService,
-		$WebhookService,
+		$UserWebhookService,
+		$SystemWebhookService,
 		$UtilityService,
 		$FileInfoService,
 		$SearchService,
@@ -503,6 +523,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting

 		$AbuseUserReportEntityService,
 		$AnnouncementEntityService,
+		$AbuseReportNotificationRecipientEntityService,
 		$AntennaEntityService,
 		$AppEntityService,
 		$AuthSessionEntityService,
@@ -536,6 +557,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		$RoleEntityService,
 		$ReversiGameEntityService,
 		$MetaEntityService,
+		$SystemWebhookEntityService,

 		$ApAudienceService,
 		$ApDbResolverService,
@@ -560,6 +582,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 	exports: [
 		QueueModule,
 		LoggerService,
+		AbuseReportService,
+		AbuseReportNotificationService,
 		AccountMoveService,
 		AccountUpdateService,
 		AiService,
@@ -612,7 +636,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		UserSuspendService,
 		UserAuthService,
 		VideoProcessingService,
-		WebhookService,
+		UserWebhookService,
+		SystemWebhookService,
 		UtilityService,
 		FileInfoService,
 		SearchService,
@@ -640,6 +665,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting

 		AbuseUserReportEntityService,
 		AnnouncementEntityService,
+		AbuseReportNotificationRecipientEntityService,
 		AntennaEntityService,
 		AppEntityService,
 		AuthSessionEntityService,
@@ -673,6 +699,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		RoleEntityService,
 		ReversiGameEntityService,
 		MetaEntityService,
+		SystemWebhookEntityService,

 		ApAudienceService,
 		ApDbResolverService,
@@ -696,6 +723,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting

 		//#region 文字列ベースでのinjection用(循環参照対応のため)
 		$LoggerService,
+		$AbuseReportService,
+		$AbuseReportNotificationService,
 		$AccountMoveService,
 		$AccountUpdateService,
 		$AiService,
@@ -748,7 +777,8 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		$UserSuspendService,
 		$UserAuthService,
 		$VideoProcessingService,
-		$WebhookService,
+		$UserWebhookService,
+		$SystemWebhookService,
 		$UtilityService,
 		$FileInfoService,
 		$SearchService,
@@ -776,6 +806,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting

 		$AbuseUserReportEntityService,
 		$AnnouncementEntityService,
+		$AbuseReportNotificationRecipientEntityService,
 		$AntennaEntityService,
 		$AppEntityService,
 		$AuthSessionEntityService,
@@ -809,6 +840,7 @@ const $ApQuestionService: Provider = { provide: 'ApQuestionService', useExisting
 		$RoleEntityService,
 		$ReversiGameEntityService,
 		$MetaEntityService,
+		$SystemWebhookEntityService,

 		$ApAudienceService,
 		$ApDbResolverService,
--- a/packages/backend/src/core/EmailService.ts
+++ b/packages/backend/src/core/EmailService.ts
@@ -16,6 +16,7 @@ import type { UserProfilesRepository } from '@/models/_.js';
 import { LoggerService } from '@/core/LoggerService.js';
 import { bindThis } from '@/decorators.js';
 import { HttpRequestService } from '@/core/HttpRequestService.js';
+import { QueueService } from '@/core/QueueService.js';

@Injectable()
 export class EmailService {
@@ -32,6 +33,7 @@ export class EmailService {
 		private loggerService: LoggerService,
 		private utilityService: UtilityService,
 		private httpRequestService: HttpRequestService,
+		private queueService: QueueService,
 	) {
 		this.logger = this.loggerService.getLogger('email');
 	}
--- a/packages/backend/src/core/GlobalEventService.ts
+++ b/packages/backend/src/core/GlobalEventService.ts
@@ -18,6 +18,7 @@ import type { MiAbuseUserReport } from '@/models/AbuseUserReport.js';
 import type { MiSignin } from '@/models/Signin.js';
 import type { MiPage } from '@/models/Page.js';
 import type { MiWebhook } from '@/models/Webhook.js';
+import type { MiSystemWebhook } from '@/models/SystemWebhook.js';
 import type { MiMeta } from '@/models/Meta.js';
 import { MiAvatarDecoration, MiReversiGame, MiRole, MiRoleAssignment } from '@/models/_.js';
 import type { Packed } from '@/misc/json-schema.js';
@@ -227,6 +228,9 @@ export interface InternalEventTypes {
 	webhookCreated: MiWebhook;
 	webhookDeleted: MiWebhook;
 	webhookUpdated: MiWebhook;
+	systemWebhookCreated: MiSystemWebhook;
+	systemWebhookDeleted: MiSystemWebhook;
+	systemWebhookUpdated: MiSystemWebhook;
 	antennaCreated: MiAntenna;
 	antennaDeleted: MiAntenna;
 	antennaUpdated: MiAntenna;
--- a/packages/backend/src/core/NoteCreateService.ts
+++ b/packages/backend/src/core/NoteCreateService.ts
@@ -38,7 +38,7 @@ import InstanceChart from '@/core/chart/charts/instance.js';
 import ActiveUsersChart from '@/core/chart/charts/active-users.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { NotificationService } from '@/core/NotificationService.js';
-import { WebhookService } from '@/core/WebhookService.js';
+import { UserWebhookService } from '@/core/UserWebhookService.js';
 import { HashtagService } from '@/core/HashtagService.js';
 import { AntennaService } from '@/core/AntennaService.js';
 import { QueueService } from '@/core/QueueService.js';
@@ -205,7 +205,7 @@ export class NoteCreateService implements OnApplicationShutdown {
 		private federatedInstanceService: FederatedInstanceService,
 		private hashtagService: HashtagService,
 		private antennaService: AntennaService,
-		private webhookService: WebhookService,
+		private webhookService: UserWebhookService,
 		private featuredService: FeaturedService,
 		private remoteUserResolveService: RemoteUserResolveService,
 		private apDeliverManagerService: ApDeliverManagerService,
@@ -606,7 +606,7 @@ export class NoteCreateService implements OnApplicationShutdown {
 			this.webhookService.getActiveWebhooks().then(webhooks => {
 				webhooks = webhooks.filter(x => x.userId === user.id && x.on.includes('note'));
 				for (const webhook of webhooks) {
-					this.queueService.webhookDeliver(webhook, 'note', {
+					this.queueService.userWebhookDeliver(webhook, 'note', {
 						note: noteObj,
 					});
 				}
@@ -633,7 +633,7 @@ export class NoteCreateService implements OnApplicationShutdown {

 						const webhooks = (await this.webhookService.getActiveWebhooks()).filter(x => x.userId === data.reply!.userId && x.on.includes('reply'));
 						for (const webhook of webhooks) {
-							this.queueService.webhookDeliver(webhook, 'reply', {
+							this.queueService.userWebhookDeliver(webhook, 'reply', {
 								note: noteObj,
 							});
 						}
@@ -656,7 +656,7 @@ export class NoteCreateService implements OnApplicationShutdown {

 					const webhooks = (await this.webhookService.getActiveWebhooks()).filter(x => x.userId === data.renote!.userId && x.on.includes('renote'));
 					for (const webhook of webhooks) {
-						this.queueService.webhookDeliver(webhook, 'renote', {
+						this.queueService.userWebhookDeliver(webhook, 'renote', {
 							note: noteObj,
 						});
 					}
@@ -788,7 +788,7 @@ export class NoteCreateService implements OnApplicationShutdown {

 			const webhooks = (await this.webhookService.getActiveWebhooks()).filter(x => x.userId === u.id && x.on.includes('mention'));
 			for (const webhook of webhooks) {
-				this.queueService.webhookDeliver(webhook, 'mention', {
+				this.queueService.userWebhookDeliver(webhook, 'mention', {
 					note: detailPackedNote,
 				});
 			}
--- a/packages/backend/src/core/QueueModule.ts
+++ b/packages/backend/src/core/QueueModule.ts
@@ -7,10 +7,17 @@ import { Inject, Module, OnApplicationShutdown } from '@nestjs/common';
 import * as Bull from 'bullmq';
 import { DI } from '@/di-symbols.js';
 import type { Config } from '@/config.js';
-import { QUEUE, baseQueueOptions } from '@/queue/const.js';
+import { baseQueueOptions, QUEUE } from '@/queue/const.js';
 import { allSettled } from '@/misc/promise-tracker.js';
+import {
+	DeliverJobData,
+	EndedPollNotificationJobData,
+	InboxJobData,
+	RelationshipJobData,
+	UserWebhookDeliverJobData,
+	SystemWebhookDeliverJobData,
+} from '../queue/types.js';
 import type { Provider } from '@nestjs/common';
-import type { DeliverJobData, InboxJobData, EndedPollNotificationJobData, WebhookDeliverJobData, RelationshipJobData } from '../queue/types.js';

 export type SystemQueue = Bull.Queue<Record<string, unknown>>;
 export type EndedPollNotificationQueue = Bull.Queue<EndedPollNotificationJobData>;
@@ -19,7 +26,8 @@ export type InboxQueue = Bull.Queue<InboxJobData>;
 export type DbQueue = Bull.Queue;
 export type RelationshipQueue = Bull.Queue<RelationshipJobData>;
 export type ObjectStorageQueue = Bull.Queue;
-export type WebhookDeliverQueue = Bull.Queue<WebhookDeliverJobData>;
+export type UserWebhookDeliverQueue = Bull.Queue<UserWebhookDeliverJobData>;
+export type SystemWebhookDeliverQueue = Bull.Queue<SystemWebhookDeliverJobData>;

 const $system: Provider = {
 	provide: 'queue:system',
@@ -63,9 +71,15 @@ const $objectStorage: Provider = {
 	inject: [DI.config],
 };

-const $webhookDeliver: Provider = {
-	provide: 'queue:webhookDeliver',
-	useFactory: (config: Config) => new Bull.Queue(QUEUE.WEBHOOK_DELIVER, baseQueueOptions(config, QUEUE.WEBHOOK_DELIVER)),
+const $userWebhookDeliver: Provider = {
+	provide: 'queue:userWebhookDeliver',
+	useFactory: (config: Config) => new Bull.Queue(QUEUE.USER_WEBHOOK_DELIVER, baseQueueOptions(config, QUEUE.USER_WEBHOOK_DELIVER)),
+	inject: [DI.config],
+};
+
+const $systemWebhookDeliver: Provider = {
+	provide: 'queue:systemWebhookDeliver',
+	useFactory: (config: Config) => new Bull.Queue(QUEUE.SYSTEM_WEBHOOK_DELIVER, baseQueueOptions(config, QUEUE.SYSTEM_WEBHOOK_DELIVER)),
 	inject: [DI.config],
 };

@@ -80,7 +94,8 @@ const $webhookDeliver: Provider = {
 		$db,
 		$relationship,
 		$objectStorage,
-		$webhookDeliver,
+		$userWebhookDeliver,
+		$systemWebhookDeliver,
 	],
 	exports: [
 		$system,
@@ -90,7 +105,8 @@ const $webhookDeliver: Provider = {
 		$db,
 		$relationship,
 		$objectStorage,
-		$webhookDeliver,
+		$userWebhookDeliver,
+		$systemWebhookDeliver,
 	],
 })
 export class QueueModule implements OnApplicationShutdown {
@@ -102,7 +118,8 @@ export class QueueModule implements OnApplicationShutdown {
 		@Inject('queue:db') public dbQueue: DbQueue,
 		@Inject('queue:relationship') public relationshipQueue: RelationshipQueue,
 		@Inject('queue:objectStorage') public objectStorageQueue: ObjectStorageQueue,
-		@Inject('queue:webhookDeliver') public webhookDeliverQueue: WebhookDeliverQueue,
+		@Inject('queue:userWebhookDeliver') public userWebhookDeliverQueue: UserWebhookDeliverQueue,
+		@Inject('queue:systemWebhookDeliver') public systemWebhookDeliverQueue: SystemWebhookDeliverQueue,
 	) {}

 	public async dispose(): Promise<void> {
@@ -117,7 +134,8 @@ export class QueueModule implements OnApplicationShutdown {
 			this.dbQueue.close(),
 			this.relationshipQueue.close(),
 			this.objectStorageQueue.close(),
-			this.webhookDeliverQueue.close(),
+			this.userWebhookDeliverQueue.close(),
+			this.systemWebhookDeliverQueue.close(),
 		]);
 	}

--- a/packages/backend/src/core/QueueService.ts
+++ b/packages/backend/src/core/QueueService.ts
@@ -8,15 +8,33 @@ import { Inject, Injectable } from '@nestjs/common';
 import type { IActivity } from '@/core/activitypub/type.js';
 import type { MiDriveFile } from '@/models/DriveFile.js';
 import type { MiWebhook, webhookEventTypes } from '@/models/Webhook.js';
+import type { MiSystemWebhook, SystemWebhookEventType } from '@/models/SystemWebhook.js';
 import type { Config } from '@/config.js';
 import { DI } from '@/di-symbols.js';
 import { bindThis } from '@/decorators.js';
 import type { Antenna } from '@/server/api/endpoints/i/import-antennas.js';
-import type { DbQueue, DeliverQueue, EndedPollNotificationQueue, InboxQueue, ObjectStorageQueue, RelationshipQueue, SystemQueue, WebhookDeliverQueue } from './QueueModule.js';
-import type { DbJobData, DeliverJobData, RelationshipJobData, ThinUser } from '../queue/types.js';
+import { ApRequestCreator } from '@/core/activitypub/ApRequestService.js';
+import type {
+	DbJobData,
+	DeliverJobData,
+	RelationshipJobData,
+	SystemWebhookDeliverJobData,
+	ThinUser,
+	UserWebhookDeliverJobData,
+} from '../queue/types.js';
+import type {
+	DbQueue,
+	DeliverQueue,
+	EndedPollNotificationQueue,
+	InboxQueue,
+	ObjectStorageQueue,
+	RelationshipQueue,
+	SystemQueue,
+	UserWebhookDeliverQueue,
+	SystemWebhookDeliverQueue,
+} from './QueueModule.js';
 import type httpSignature from '@peertube/http-signature';
 import type * as Bull from 'bullmq';
-import { ApRequestCreator } from '@/core/activitypub/ApRequestService.js';

@Injectable()
 export class QueueService {
@@ -31,7 +49,8 @@ export class QueueService {
 		@Inject('queue:db') public dbQueue: DbQueue,
 		@Inject('queue:relationship') public relationshipQueue: RelationshipQueue,
 		@Inject('queue:objectStorage') public objectStorageQueue: ObjectStorageQueue,
-		@Inject('queue:webhookDeliver') public webhookDeliverQueue: WebhookDeliverQueue,
+		@Inject('queue:userWebhookDeliver') public userWebhookDeliverQueue: UserWebhookDeliverQueue,
+		@Inject('queue:systemWebhookDeliver') public systemWebhookDeliverQueue: SystemWebhookDeliverQueue,
 	) {
 		this.systemQueue.add('tickCharts', {
 		}, {
@@ -431,9 +450,13 @@ export class QueueService {
 		});
 	}

+	/**
+	 * @see UserWebhookDeliverJobData
+	 * @see WebhookDeliverProcessorService
+	 */
 	@bindThis
-	public webhookDeliver(webhook: MiWebhook, type: typeof webhookEventTypes[number], content: unknown) {
-		const data = {
+	public userWebhookDeliver(webhook: MiWebhook, type: typeof webhookEventTypes[number], content: unknown) {
+		const data: UserWebhookDeliverJobData = {
 			type,
 			content,
 			webhookId: webhook.id,
@@ -444,7 +467,33 @@ export class QueueService {
 			eventId: randomUUID(),
 		};

-		return this.webhookDeliverQueue.add(webhook.id, data, {
+		return this.userWebhookDeliverQueue.add(webhook.id, data, {
+			attempts: 4,
+			backoff: {
+				type: 'custom',
+			},
+			removeOnComplete: true,
+			removeOnFail: true,
+		});
+	}
+
+	/**
+	 * @see SystemWebhookDeliverJobData
+	 * @see WebhookDeliverProcessorService
+	 */
+	@bindThis
+	public systemWebhookDeliver(webhook: MiSystemWebhook, type: SystemWebhookEventType, content: unknown) {
+		const data: SystemWebhookDeliverJobData = {
+			type,
+			content,
+			webhookId: webhook.id,
+			to: webhook.url,
+			secret: webhook.secret,
+			createdAt: Date.now(),
+			eventId: randomUUID(),
+		};
+
+		return this.systemWebhookDeliverQueue.add(webhook.id, data, {
 			attempts: 4,
 			backoff: {
 				type: 'custom',
--- a/packages/backend/src/core/RoleService.ts
+++ b/packages/backend/src/core/RoleService.ts
@@ -410,14 +410,32 @@ export class RoleService implements OnApplicationShutdown, OnModuleInit {
 	}

 	@bindThis
-	public async getModeratorIds(includeAdmins = true): Promise<MiUser['id'][]> {
+	public async getModeratorIds(includeAdmins = true, excludeExpire = false): Promise<MiUser['id'][]> {
 		const roles = await this.rolesCache.fetch(() => this.rolesRepository.findBy({}));
-		const moderatorRoles = includeAdmins ? roles.filter(r => r.isModerator || r.isAdministrator) : roles.filter(r => r.isModerator);
-		const assigns = moderatorRoles.length > 0 ? await this.roleAssignmentsRepository.findBy({
-			roleId: In(moderatorRoles.map(r => r.id)),
-		}) : [];
+		const moderatorRoles = includeAdmins
+			? roles.filter(r => r.isModerator || r.isAdministrator)
+			: roles.filter(r => r.isModerator);
+
 		// TODO: isRootなアカウントも含める
-		return assigns.map(a => a.userId);
+		const assigns = moderatorRoles.length > 0
+			? await this.roleAssignmentsRepository.findBy({ roleId: In(moderatorRoles.map(r => r.id)) })
+			: [];
+
+		const now = Date.now();
+		const result = [
+			// Setを経由して重複を除去（ユーザIDは重複する可能性があるので）
+			...new Set(
+				assigns
+					.filter(it =>
+						(excludeExpire)
+							? (it.expiresAt == null || it.expiresAt.getTime() > now)
+							: true,
+					)
+					.map(a => a.userId),
+			),
+		];
+
+		return result.sort((x, y) => x.localeCompare(y));
 	}

 	@bindThis
--- a/packages/backend/src/core/SystemWebhookService.ts
+++ b/packages/backend/src/core/SystemWebhookService.ts
@@ -0,0 +1,233 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import * as Redis from 'ioredis';
+import type { MiUser, SystemWebhooksRepository } from '@/models/_.js';
+import { DI } from '@/di-symbols.js';
+import { bindThis } from '@/decorators.js';
+import { GlobalEvents, GlobalEventService } from '@/core/GlobalEventService.js';
+import { MiSystemWebhook, type SystemWebhookEventType } from '@/models/SystemWebhook.js';
+import { IdService } from '@/core/IdService.js';
+import { QueueService } from '@/core/QueueService.js';
+import { ModerationLogService } from '@/core/ModerationLogService.js';
+import { LoggerService } from '@/core/LoggerService.js';
+import Logger from '@/logger.js';
+import type { OnApplicationShutdown } from '@nestjs/common';
+
+@Injectable()
+export class SystemWebhookService implements OnApplicationShutdown {
+	private logger: Logger;
+	private activeSystemWebhooksFetched = false;
+	private activeSystemWebhooks: MiSystemWebhook[] = [];
+
+	constructor(
+		@Inject(DI.redisForSub)
+		private redisForSub: Redis.Redis,
+		@Inject(DI.systemWebhooksRepository)
+		private systemWebhooksRepository: SystemWebhooksRepository,
+		private idService: IdService,
+		private queueService: QueueService,
+		private moderationLogService: ModerationLogService,
+		private loggerService: LoggerService,
+		private globalEventService: GlobalEventService,
+	) {
+		this.redisForSub.on('message', this.onMessage);
+		this.logger = this.loggerService.getLogger('webhook');
+	}
+
+	@bindThis
+	public async fetchActiveSystemWebhooks() {
+		if (!this.activeSystemWebhooksFetched) {
+			this.activeSystemWebhooks = await this.systemWebhooksRepository.findBy({
+				isActive: true,
+			});
+			this.activeSystemWebhooksFetched = true;
+		}
+
+		return this.activeSystemWebhooks;
+	}
+
+	/**
+	 * SystemWebhook の一覧を取得する.
+	 */
+	@bindThis
+	public async fetchSystemWebhooks(params?: {
+		ids?: MiSystemWebhook['id'][];
+		isActive?: MiSystemWebhook['isActive'];
+		on?: MiSystemWebhook['on'];
+	}): Promise<MiSystemWebhook[]> {
+		const query = this.systemWebhooksRepository.createQueryBuilder('systemWebhook');
+		if (params) {
+			if (params.ids && params.ids.length > 0) {
+				query.andWhere('systemWebhook.id IN (:...ids)', { ids: params.ids });
+			}
+			if (params.isActive !== undefined) {
+				query.andWhere('systemWebhook.isActive = :isActive', { isActive: params.isActive });
+			}
+			if (params.on && params.on.length > 0) {
+				query.andWhere(':on <@ systemWebhook.on', { on: params.on });
+			}
+		}
+
+		return query.getMany();
+	}
+
+	/**
+	 * SystemWebhook を作成する.
+	 */
+	@bindThis
+	public async createSystemWebhook(
+		params: {
+			isActive: MiSystemWebhook['isActive'];
+			name: MiSystemWebhook['name'];
+			on: MiSystemWebhook['on'];
+			url: MiSystemWebhook['url'];
+			secret: MiSystemWebhook['secret'];
+		},
+		updater: MiUser,
+	): Promise<MiSystemWebhook> {
+		const id = this.idService.gen();
+		await this.systemWebhooksRepository.insert({
+			...params,
+			id,
+		});
+
+		const webhook = await this.systemWebhooksRepository.findOneByOrFail({ id });
+		this.globalEventService.publishInternalEvent('systemWebhookCreated', webhook);
+		this.moderationLogService
+			.log(updater, 'createSystemWebhook', {
+				systemWebhookId: webhook.id,
+				webhook: webhook,
+			})
+			.then();
+
+		return webhook;
+	}
+
+	/**
+	 * SystemWebhook を更新する.
+	 */
+	@bindThis
+	public async updateSystemWebhook(
+		params: {
+			id: MiSystemWebhook['id'];
+			isActive: MiSystemWebhook['isActive'];
+			name: MiSystemWebhook['name'];
+			on: MiSystemWebhook['on'];
+			url: MiSystemWebhook['url'];
+			secret: MiSystemWebhook['secret'];
+		},
+		updater: MiUser,
+	): Promise<MiSystemWebhook> {
+		const beforeEntity = await this.systemWebhooksRepository.findOneByOrFail({ id: params.id });
+		await this.systemWebhooksRepository.update(beforeEntity.id, {
+			updatedAt: new Date(),
+			isActive: params.isActive,
+			name: params.name,
+			on: params.on,
+			url: params.url,
+			secret: params.secret,
+		});
+
+		const afterEntity = await this.systemWebhooksRepository.findOneByOrFail({ id: beforeEntity.id });
+		this.globalEventService.publishInternalEvent('systemWebhookUpdated', afterEntity);
+		this.moderationLogService
+			.log(updater, 'updateSystemWebhook', {
+				systemWebhookId: beforeEntity.id,
+				before: beforeEntity,
+				after: afterEntity,
+			})
+			.then();
+
+		return afterEntity;
+	}
+
+	/**
+	 * SystemWebhook を削除する.
+	 */
+	@bindThis
+	public async deleteSystemWebhook(id: MiSystemWebhook['id'], updater: MiUser) {
+		const webhook = await this.systemWebhooksRepository.findOneByOrFail({ id });
+		await this.systemWebhooksRepository.delete(id);
+
+		this.globalEventService.publishInternalEvent('systemWebhookDeleted', webhook);
+		this.moderationLogService
+			.log(updater, 'deleteSystemWebhook', {
+				systemWebhookId: webhook.id,
+				webhook,
+			})
+			.then();
+	}
+
+	/**
+	 * SystemWebhook をWebhook配送キューに追加する
+	 * @see QueueService.systemWebhookDeliver
+	 */
+	@bindThis
+	public async enqueueSystemWebhook(webhook: MiSystemWebhook | MiSystemWebhook['id'], type: SystemWebhookEventType, content: unknown) {
+		const webhookEntity = typeof webhook === 'string'
+			? (await this.fetchActiveSystemWebhooks()).find(a => a.id === webhook)
+			: webhook;
+		if (!webhookEntity || !webhookEntity.isActive) {
+			this.logger.info(`Webhook is not active or not found : ${webhook}`);
+			return;
+		}
+
+		if (!webhookEntity.on.includes(type)) {
+			this.logger.info(`Webhook ${webhookEntity.id} is not listening to ${type}`);
+			return;
+		}
+
+		return this.queueService.systemWebhookDeliver(webhookEntity, type, content);
+	}
+
+	@bindThis
+	private async onMessage(_: string, data: string): Promise<void> {
+		const obj = JSON.parse(data);
+		if (obj.channel !== 'internal') {
+			return;
+		}
+
+		const { type, body } = obj.message as GlobalEvents['internal']['payload'];
+		switch (type) {
+			case 'systemWebhookCreated': {
+				if (body.isActive) {
+					this.activeSystemWebhooks.push(MiSystemWebhook.deserialize(body));
+				}
+				break;
+			}
+			case 'systemWebhookUpdated': {
+				if (body.isActive) {
+					const i = this.activeSystemWebhooks.findIndex(a => a.id === body.id);
+					if (i > -1) {
+						this.activeSystemWebhooks[i] = MiSystemWebhook.deserialize(body);
+					} else {
+						this.activeSystemWebhooks.push(MiSystemWebhook.deserialize(body));
+					}
+				} else {
+					this.activeSystemWebhooks = this.activeSystemWebhooks.filter(a => a.id !== body.id);
+				}
+				break;
+			}
+			case 'systemWebhookDeleted': {
+				this.activeSystemWebhooks = this.activeSystemWebhooks.filter(a => a.id !== body.id);
+				break;
+			}
+			default:
+				break;
+		}
+	}
+
+	@bindThis
+	public dispose(): void {
+		this.redisForSub.off('message', this.onMessage);
+	}
+
+	@bindThis
+	public onApplicationShutdown(signal?: string | undefined): void {
+		this.dispose();
+	}
+}
--- a/packages/backend/src/core/UserBlockingService.ts
+++ b/packages/backend/src/core/UserBlockingService.ts
@@ -16,7 +16,7 @@ import Logger from '@/logger.js';
 import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { ApRendererService } from '@/core/activitypub/ApRendererService.js';
 import { LoggerService } from '@/core/LoggerService.js';
-import { WebhookService } from '@/core/WebhookService.js';
+import { UserWebhookService } from '@/core/UserWebhookService.js';
 import { bindThis } from '@/decorators.js';
 import { CacheService } from '@/core/CacheService.js';
 import { UserFollowingService } from '@/core/UserFollowingService.js';
@@ -46,7 +46,7 @@ export class UserBlockingService implements OnModuleInit {
 		private idService: IdService,
 		private queueService: QueueService,
 		private globalEventService: GlobalEventService,
-		private webhookService: WebhookService,
+		private webhookService: UserWebhookService,
 		private apRendererService: ApRendererService,
 		private loggerService: LoggerService,
 	) {
@@ -121,7 +121,7 @@ export class UserBlockingService implements OnModuleInit {

 				const webhooks = (await this.webhookService.getActiveWebhooks()).filter(x => x.userId === follower.id && x.on.includes('unfollow'));
 				for (const webhook of webhooks) {
-					this.queueService.webhookDeliver(webhook, 'unfollow', {
+					this.queueService.userWebhookDeliver(webhook, 'unfollow', {
 						user: packed,
 					});
 				}
--- a/packages/backend/src/core/UserFollowingService.ts
+++ b/packages/backend/src/core/UserFollowingService.ts
@@ -16,7 +16,7 @@ import { isDuplicateKeyValueError } from '@/misc/is-duplicate-key-value-error.js
 import type { Packed } from '@/misc/json-schema.js';
 import InstanceChart from '@/core/chart/charts/instance.js';
 import { FederatedInstanceService } from '@/core/FederatedInstanceService.js';
-import { WebhookService } from '@/core/WebhookService.js';
+import { UserWebhookService } from '@/core/UserWebhookService.js';
 import { NotificationService } from '@/core/NotificationService.js';
 import { DI } from '@/di-symbols.js';
 import type { FollowingsRepository, FollowRequestsRepository, InstancesRepository, UserProfilesRepository, UsersRepository } from '@/models/_.js';
@@ -82,7 +82,7 @@ export class UserFollowingService implements OnModuleInit {
 		private metaService: MetaService,
 		private notificationService: NotificationService,
 		private federatedInstanceService: FederatedInstanceService,
-		private webhookService: WebhookService,
+		private webhookService: UserWebhookService,
 		private apRendererService: ApRendererService,
 		private accountMoveService: AccountMoveService,
 		private fanoutTimelineService: FanoutTimelineService,
@@ -331,7 +331,7 @@ export class UserFollowingService implements OnModuleInit {

 				const webhooks = (await this.webhookService.getActiveWebhooks()).filter(x => x.userId === follower.id && x.on.includes('follow'));
 				for (const webhook of webhooks) {
-					this.queueService.webhookDeliver(webhook, 'follow', {
+					this.queueService.userWebhookDeliver(webhook, 'follow', {
 						user: packed,
 					});
 				}
@@ -345,7 +345,7 @@ export class UserFollowingService implements OnModuleInit {

 				const webhooks = (await this.webhookService.getActiveWebhooks()).filter(x => x.userId === followee.id && x.on.includes('followed'));
 				for (const webhook of webhooks) {
-					this.queueService.webhookDeliver(webhook, 'followed', {
+					this.queueService.userWebhookDeliver(webhook, 'followed', {
 						user: packed,
 					});
 				}
@@ -398,7 +398,7 @@ export class UserFollowingService implements OnModuleInit {

 				const webhooks = (await this.webhookService.getActiveWebhooks()).filter(x => x.userId === follower.id && x.on.includes('unfollow'));
 				for (const webhook of webhooks) {
-					this.queueService.webhookDeliver(webhook, 'unfollow', {
+					this.queueService.userWebhookDeliver(webhook, 'unfollow', {
 						user: packed,
 					});
 				}
@@ -740,7 +740,7 @@ export class UserFollowingService implements OnModuleInit {

 		const webhooks = (await this.webhookService.getActiveWebhooks()).filter(x => x.userId === follower.id && x.on.includes('unfollow'));
 		for (const webhook of webhooks) {
-			this.queueService.webhookDeliver(webhook, 'unfollow', {
+			this.queueService.userWebhookDeliver(webhook, 'unfollow', {
 				user: packedFollowee,
 			});
 		}
--- a/packages/backend/src/core/UserWebhookService.ts
+++ b/packages/backend/src/core/UserWebhookService.ts
@@ -0,0 +1,99 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import * as Redis from 'ioredis';
+import type { WebhooksRepository } from '@/models/_.js';
+import type { MiWebhook } from '@/models/Webhook.js';
+import { DI } from '@/di-symbols.js';
+import { bindThis } from '@/decorators.js';
+import { GlobalEvents } from '@/core/GlobalEventService.js';
+import type { OnApplicationShutdown } from '@nestjs/common';
+
+@Injectable()
+export class UserWebhookService implements OnApplicationShutdown {
+	private activeWebhooksFetched = false;
+	private activeWebhooks: MiWebhook[] = [];
+
+	constructor(
+		@Inject(DI.redisForSub)
+		private redisForSub: Redis.Redis,
+		@Inject(DI.webhooksRepository)
+		private webhooksRepository: WebhooksRepository,
+	) {
+		this.redisForSub.on('message', this.onMessage);
+	}
+
+	@bindThis
+	public async getActiveWebhooks() {
+		if (!this.activeWebhooksFetched) {
+			this.activeWebhooks = await this.webhooksRepository.findBy({
+				active: true,
+			});
+			this.activeWebhooksFetched = true;
+		}
+
+		return this.activeWebhooks;
+	}
+
+	@bindThis
+	private async onMessage(_: string, data: string): Promise<void> {
+		const obj = JSON.parse(data);
+		if (obj.channel !== 'internal') {
+			return;
+		}
+
+		const { type, body } = obj.message as GlobalEvents['internal']['payload'];
+		switch (type) {
+			case 'webhookCreated': {
+				if (body.active) {
+					this.activeWebhooks.push({ // TODO: このあたりのデシリアライズ処理は各modelファイル内に関数としてexportしたい
+						...body,
+						latestSentAt: body.latestSentAt ? new Date(body.latestSentAt) : null,
+						user: null, // joinなカラムは通常取ってこないので
+					});
+				}
+				break;
+			}
+			case 'webhookUpdated': {
+				if (body.active) {
+					const i = this.activeWebhooks.findIndex(a => a.id === body.id);
+					if (i > -1) {
+						this.activeWebhooks[i] = { // TODO: このあたりのデシリアライズ処理は各modelファイル内に関数としてexportしたい
+							...body,
+							latestSentAt: body.latestSentAt ? new Date(body.latestSentAt) : null,
+							user: null, // joinなカラムは通常取ってこないので
+						};
+					} else {
+						this.activeWebhooks.push({ // TODO: このあたりのデシリアライズ処理は各modelファイル内に関数としてexportしたい
+							...body,
+							latestSentAt: body.latestSentAt ? new Date(body.latestSentAt) : null,
+							user: null, // joinなカラムは通常取ってこないので
+						});
+					}
+				} else {
+					this.activeWebhooks = this.activeWebhooks.filter(a => a.id !== body.id);
+				}
+				break;
+			}
+			case 'webhookDeleted': {
+				this.activeWebhooks = this.activeWebhooks.filter(a => a.id !== body.id);
+				break;
+			}
+			default:
+				break;
+		}
+	}
+
+	@bindThis
+	public dispose(): void {
+		this.redisForSub.off('message', this.onMessage);
+	}
+
+	@bindThis
+	public onApplicationShutdown(signal?: string | undefined): void {
+		this.dispose();
+	}
+}
--- a/packages/backend/src/core/WebhookService.ts
+++ b/packages/backend/src/core/WebhookService.ts
@@ -1,97 +0,0 @@
-/*
- * SPDX-FileCopyrightText: syuilo and misskey-project
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-import { Inject, Injectable } from '@nestjs/common';
-import * as Redis from 'ioredis';
-import type { WebhooksRepository } from '@/models/_.js';
-import type { MiWebhook } from '@/models/Webhook.js';
-import { DI } from '@/di-symbols.js';
-import { bindThis } from '@/decorators.js';
-import type { GlobalEvents } from '@/core/GlobalEventService.js';
-import type { OnApplicationShutdown } from '@nestjs/common';
-
-@Injectable()
-export class WebhookService implements OnApplicationShutdown {
-	private webhooksFetched = false;
-	private webhooks: MiWebhook[] = [];
-
-	constructor(
-		@Inject(DI.redisForSub)
-		private redisForSub: Redis.Redis,
-
-		@Inject(DI.webhooksRepository)
-		private webhooksRepository: WebhooksRepository,
-	) {
-		//this.onMessage = this.onMessage.bind(this);
-		this.redisForSub.on('message', this.onMessage);
-	}
-
-	@bindThis
-	public async getActiveWebhooks() {
-		if (!this.webhooksFetched) {
-			this.webhooks = await this.webhooksRepository.findBy({
-				active: true,
-			});
-			this.webhooksFetched = true;
-		}
-
-		return this.webhooks;
-	}
-
-	@bindThis
-	private async onMessage(_: string, data: string): Promise<void> {
-		const obj = JSON.parse(data);
-
-		if (obj.channel === 'internal') {
-			const { type, body } = obj.message as GlobalEvents['internal']['payload'];
-			switch (type) {
-				case 'webhookCreated':
-					if (body.active) {
-						this.webhooks.push({ // TODO: このあたりのデシリアライズ処理は各modelファイル内に関数としてexportしたい
-							...body,
-							latestSentAt: body.latestSentAt ? new Date(body.latestSentAt) : null,
-							user: null, // joinなカラムは通常取ってこないので
-						});
-					}
-					break;
-				case 'webhookUpdated':
-					if (body.active) {
-						const i = this.webhooks.findIndex(a => a.id === body.id);
-						if (i > -1) {
-							this.webhooks[i] = { // TODO: このあたりのデシリアライズ処理は各modelファイル内に関数としてexportしたい
-								...body,
-								latestSentAt: body.latestSentAt ? new Date(body.latestSentAt) : null,
-								user: null, // joinなカラムは通常取ってこないので
-							};
-						} else {
-							this.webhooks.push({ // TODO: このあたりのデシリアライズ処理は各modelファイル内に関数としてexportしたい
-								...body,
-								latestSentAt: body.latestSentAt ? new Date(body.latestSentAt) : null,
-								user: null, // joinなカラムは通常取ってこないので
-							});
-						}
-					} else {
-						this.webhooks = this.webhooks.filter(a => a.id !== body.id);
-					}
-					break;
-				case 'webhookDeleted':
-					this.webhooks = this.webhooks.filter(a => a.id !== body.id);
-					break;
-				default:
-					break;
-			}
-		}
-	}
-
-	@bindThis
-	public dispose(): void {
-		this.redisForSub.off('message', this.onMessage);
-	}
-
-	@bindThis
-	public onApplicationShutdown(signal?: string | undefined): void {
-		this.dispose();
-	}
-}
--- a/packages/backend/src/core/activitypub/ApInboxService.ts
+++ b/packages/backend/src/core/activitypub/ApInboxService.ts
@@ -29,6 +29,7 @@ import { bindThis } from '@/decorators.js';
 import type { MiRemoteUser } from '@/models/User.js';
 import { isNotNull } from '@/misc/is-not-null.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
+import { AbuseReportService } from '@/core/AbuseReportService.js';
 import { getApHrefNullable, getApId, getApIds, getApType, isAccept, isActor, isAdd, isAnnounce, isBlock, isCollection, isCollectionOrOrderedCollection, isCreate, isDelete, isFlag, isFollow, isLike, isMove, isPost, isReject, isRemove, isTombstone, isUndo, isUpdate, validActor, validPost } from './type.js';
 import { ApNoteService } from './models/ApNoteService.js';
 import { ApLoggerService } from './ApLoggerService.js';
@@ -57,9 +58,6 @@ export class ApInboxService {
 		@Inject(DI.followingsRepository)
 		private followingsRepository: FollowingsRepository,

-		@Inject(DI.abuseUserReportsRepository)
-		private abuseUserReportsRepository: AbuseUserReportsRepository,
-
 		@Inject(DI.followRequestsRepository)
 		private followRequestsRepository: FollowRequestsRepository,

@@ -68,6 +66,7 @@ export class ApInboxService {
 		private utilityService: UtilityService,
 		private idService: IdService,
 		private metaService: MetaService,
+		private abuseReportService: AbuseReportService,
 		private userFollowingService: UserFollowingService,
 		private apAudienceService: ApAudienceService,
 		private reactionService: ReactionService,
@@ -545,14 +544,13 @@ export class ApInboxService {
 		});
 		if (users.length < 1) return 'skip';

-		await this.abuseUserReportsRepository.insert({
-			id: this.idService.gen(),
+		await this.abuseReportService.report([{
 			targetUserId: users[0].id,
 			targetUserHost: users[0].host,
 			reporterId: actor.id,
 			reporterHost: actor.host,
 			comment: `${activity.content}\n${JSON.stringify(uris, null, 2)}`,
-		});
+		}]);

 		return 'ok';
 	}
--- a/packages/backend/src/core/entities/AbuseReportNotificationRecipientEntityService.ts
+++ b/packages/backend/src/core/entities/AbuseReportNotificationRecipientEntityService.ts
@@ -0,0 +1,88 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import { In } from 'typeorm';
+import { DI } from '@/di-symbols.js';
+import type { AbuseReportNotificationRecipientRepository, MiAbuseReportNotificationRecipient } from '@/models/_.js';
+import { bindThis } from '@/decorators.js';
+import { UserEntityService } from '@/core/entities/UserEntityService.js';
+import { Packed } from '@/misc/json-schema.js';
+import { SystemWebhookEntityService } from '@/core/entities/SystemWebhookEntityService.js';
+import { isNotNull } from '@/misc/is-not-null.js';
+
+@Injectable()
+export class AbuseReportNotificationRecipientEntityService {
+	constructor(
+		@Inject(DI.abuseReportNotificationRecipientRepository)
+		private abuseReportNotificationRecipientRepository: AbuseReportNotificationRecipientRepository,
+		private userEntityService: UserEntityService,
+		private systemWebhookEntityService: SystemWebhookEntityService,
+	) {
+	}
+
+	@bindThis
+	public async pack(
+		src: MiAbuseReportNotificationRecipient['id'] | MiAbuseReportNotificationRecipient,
+		opts?: {
+			users: Map<string, Packed<'UserLite'>>,
+			webhooks: Map<string, Packed<'SystemWebhook'>>,
+		},
+	): Promise<Packed<'AbuseReportNotificationRecipient'>> {
+		const recipient = typeof src === 'object'
+			? src
+			: await this.abuseReportNotificationRecipientRepository.findOneByOrFail({ id: src });
+		const user = recipient.userId
+			? (opts?.users.get(recipient.userId) ?? await this.userEntityService.pack<'UserLite'>(recipient.userId))
+			: undefined;
+		const webhook = recipient.systemWebhookId
+			? (opts?.webhooks.get(recipient.systemWebhookId) ?? await this.systemWebhookEntityService.pack(recipient.systemWebhookId))
+			: undefined;
+
+		return {
+			id: recipient.id,
+			isActive: recipient.isActive,
+			updatedAt: recipient.updatedAt.toISOString(),
+			name: recipient.name,
+			method: recipient.method,
+			userId: recipient.userId ?? undefined,
+			user: user,
+			systemWebhookId: recipient.systemWebhookId ?? undefined,
+			systemWebhook: webhook,
+		};
+	}
+
+	@bindThis
+	public async packMany(
+		src: MiAbuseReportNotificationRecipient['id'][] | MiAbuseReportNotificationRecipient[],
+	): Promise<Packed<'AbuseReportNotificationRecipient'>[]> {
+		const objs = src.filter((it): it is MiAbuseReportNotificationRecipient => typeof it === 'object');
+		const ids = src.filter((it): it is MiAbuseReportNotificationRecipient['id'] => typeof it === 'string');
+		if (ids.length > 0) {
+			objs.push(
+				...await this.abuseReportNotificationRecipientRepository.findBy({ id: In(ids) }),
+			);
+		}
+
+		const userIds = objs.map(it => it.userId).filter(isNotNull);
+		const users: Map<string, Packed<'UserLite'>> = (userIds.length > 0)
+			? await this.userEntityService.packMany(userIds)
+				.then(it => new Map(it.map(it => [it.id, it])))
+			: new Map();
+
+		const systemWebhookIds = objs.map(it => it.systemWebhookId).filter(isNotNull);
+		const systemWebhooks: Map<string, Packed<'SystemWebhook'>> = (systemWebhookIds.length > 0)
+			? await this.systemWebhookEntityService.packMany(systemWebhookIds)
+				.then(it => new Map(it.map(it => [it.id, it])))
+			: new Map();
+
+		return Promise
+			.all(
+				objs.map(it => this.pack(it, { users: users, webhooks: systemWebhooks })),
+			)
+			.then(it => it.sort((a, b) => a.id.localeCompare(b.id)));
+	}
+}
+
--- a/packages/backend/src/core/entities/SystemWebhookEntityService.ts
+++ b/packages/backend/src/core/entities/SystemWebhookEntityService.ts
@@ -0,0 +1,74 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable } from '@nestjs/common';
+import { In } from 'typeorm';
+import { DI } from '@/di-symbols.js';
+import type { MiSystemWebhook, SystemWebhooksRepository } from '@/models/_.js';
+import { bindThis } from '@/decorators.js';
+import { Packed } from '@/misc/json-schema.js';
+
+@Injectable()
+export class SystemWebhookEntityService {
+	constructor(
+		@Inject(DI.systemWebhooksRepository)
+		private systemWebhooksRepository: SystemWebhooksRepository,
+	) {
+	}
+
+	@bindThis
+	public async pack(
+		src: MiSystemWebhook['id'] | MiSystemWebhook,
+		opts?: {
+			webhooks: Map<string, MiSystemWebhook>
+		},
+	): Promise<Packed<'SystemWebhook'>> {
+		const webhook = typeof src === 'object'
+			? src
+			: opts?.webhooks.get(src) ?? await this.systemWebhooksRepository.findOneByOrFail({ id: src });
+
+		return {
+			id: webhook.id,
+			isActive: webhook.isActive,
+			updatedAt: webhook.updatedAt.toISOString(),
+			latestSentAt: webhook.latestSentAt?.toISOString() ?? null,
+			latestStatus: webhook.latestStatus,
+			name: webhook.name,
+			on: webhook.on,
+			url: webhook.url,
+			secret: webhook.secret,
+		};
+	}
+
+	@bindThis
+	public async packMany(src: MiSystemWebhook['id'][] | MiSystemWebhook[]): Promise<Packed<'SystemWebhook'>[]> {
+		if (src.length === 0) {
+			return [];
+		}
+
+		const webhooks = Array.of<MiSystemWebhook>();
+		webhooks.push(
+			...src.filter((it): it is MiSystemWebhook => typeof it === 'object'),
+		);
+
+		const ids = src.filter((it): it is MiSystemWebhook['id'] => typeof it === 'string');
+		if (ids.length > 0) {
+			webhooks.push(
+				...await this.systemWebhooksRepository.findBy({ id: In(ids) }),
+			);
+		}
+
+		return Promise
+			.all(
+				webhooks.map(x =>
+					this.pack(x, {
+						webhooks: new Map(webhooks.map(x => [x.id, x])),
+					}),
+				),
+			)
+			.then(it => it.sort((a, b) => a.id.localeCompare(b.id)));
+	}
+}
+