locales/en-US.yml

@@ -826,6 +826,7 @@ oauthErrorGoBack: "An error happened while trying to authenticate a 3rd party ap
     \ Please go back and try again."
 appAuthorization: "App authorization"
 noPermissionsRequested: "(No permissions requested.)"
+movedTo: "This user has moved to {handle}."
 _emailUnavailable:
   used: "This email address is already being used"
   format: "The format of this email address is invalid"
@@ -1303,6 +1304,7 @@ _notification:
     receiveFollowRequest: "Received follow requests"
     followRequestAccepted: "Accepted follow requests"
     groupInvited: "Group invitations"
+    move: "Others moving accounts"
     app: "Notifications from linked apps"
   _actions:
     followBack: "followed you back"

packages/backend/migration/1668977715500-movedTo.js

@@ -0,0 +1,35 @@
+export class movedTo1668977715500 {
+	name = 'movedTo1668977715500';
+
+	async up(queryRunner) {
+		await queryRunner.query(`ALTER TABLE "user" ADD "movedToId" character varying(32)`);
+		await queryRunner.query(`ALTER TABLE "notification" ADD "moveTargetId" character varying(32)`);
+		await queryRunner.query(`COMMENT ON COLUMN "notification"."moveTargetId" IS 'The ID of the moved to account.'`);
+		await queryRunner.query(`ALTER TABLE "user" ADD CONSTRAINT "FK_16fef167e4253ccdc8971b01f6e" FOREIGN KEY ("movedToId") REFERENCES "user"("id") ON DELETE SET NULL ON UPDATE NO ACTION`);
+		await queryRunner.query(`ALTER TABLE "notification" ADD CONSTRAINT "FK_078db271ad52ccc345b7b2b026a" FOREIGN KEY ("moveTargetId") REFERENCES "user"("id") ON DELETE CASCADE ON UPDATE NO ACTION`);
+		await queryRunner.query(`ALTER TYPE "notification_type_enum" ADD VALUE 'move'`);
+		await queryRunner.query(`ALTER TYPE "user_profile_mutingnotificationtypes_enum" ADD VALUE 'move'`);
+	}
+
+	async down(queryRunner) {
+		// remove 'move' from user muting notifications type enum
+		await queryRunner.query(`CREATE TYPE "public"."user_profile_mutingnotificationtypes_enum_old" AS ENUM('follow', 'mention', 'reply', 'renote', 'quote', 'reaction', 'pollVote', 'receiveFollowRequest', 'followRequestAccepted', 'groupInvited', 'app', 'pollEnded')`);
+		await queryRunner.query(`ALTER TABLE "user_profile" ALTER COLUMN "mutingNotificationTypes" DROP DEFAULT`);
+		await queryRunner.query(`ALTER TABLE "user_profile" ALTER COLUMN "mutingNotificationTypes" TYPE "public"."user_profile_mutingnotificationtypes_enum_old"[] USING "mutingNotificationTypes"::"text"::"public"."user_profile_mutingnotificationtypes_enum_old"[]`);
+		await queryRunner.query(`ALTER TABLE "user_profile" ALTER COLUMN "mutingNotificationTypes" SET DEFAULT '{}'`);
+		await queryRunner.query(`DROP TYPE "public"."user_profile_mutingnotificationtypes_enum"`);
+		await queryRunner.query(`ALTER TYPE "public"."user_profile_mutingnotificationtypes_enum_old" RENAME TO "user_profile_mutingnotificationtypes_enum"`);
+
+		// remove 'move' from notification type enum
+		await queryRunner.query(`DELETE FROM "notification" WHERE "type" = 'move'`);
+		await queryRunner.query(`CREATE TYPE "public"."notification_type_enum_old" AS ENUM('follow', 'mention', 'reply', 'renote', 'quote', 'reaction', 'pollVote', 'pollEnded', 'receiveFollowRequest', 'followRequestAccepted', 'groupInvited', 'app')`);
+		await queryRunner.query(`ALTER TABLE "notification" ALTER COLUMN "type" TYPE "public"."notification_type_enum_old" USING "type"::"text"::"public"."notification_type_enum_old"`);
+		await queryRunner.query(`DROP TYPE "public"."notification_type_enum"`);
+		await queryRunner.query(`ALTER TYPE "public"."notification_type_enum_old" RENAME TO "notification_type_enum"`);
+
+		await queryRunner.query(`ALTER TABLE "notification" DROP CONSTRAINT "FK_078db271ad52ccc345b7b2b026a"`);
+		await queryRunner.query(`ALTER TABLE "user" DROP CONSTRAINT "FK_16fef167e4253ccdc8971b01f6e"`);
+		await queryRunner.query(`ALTER TABLE "notification" DROP COLUMN "moveTargetId"`);
+		await queryRunner.query(`ALTER TABLE "user" DROP COLUMN "movedToId"`);
+	}
+}

packages/backend/src/models/entities/notification.ts

@@ -52,19 +52,20 @@ export class Notification {
 	public notifier: User | null;
 
 	/**
-	 * 通知の種類。
-	 * follow - フォローされた
-	 * mention - 投稿で自分が言及された
-	 * reply - (自分または自分がWatchしている)投稿が返信された
-	 * renote - (自分または自分がWatchしている)投稿がRenoteされた
-	 * quote - (自分または自分がWatchしている)投稿が引用Renoteされた
-	 * reaction - (自分または自分がWatchしている)投稿にリアクションされた
-	 * pollVote - (自分または自分がWatchしている)投稿のアンケートに投票された
-	 * pollEnded - 自分のアンケートもしくは自分が投票したアンケートが終了した
-	 * receiveFollowRequest - フォローリクエストされた
-	 * followRequestAccepted - 自分の送ったフォローリクエストが承認された
-	 * groupInvited - グループに招待された
-	 * app - アプリ通知
+	 * Type of notification.
+	 * follow - notifier followed notifiee
+	 * mention - notifiee was mentioned
+	 * reply - notifiee (author or watching) was replied to
+	 * renote - notifiee (author or watching) was renoted
+	 * quote - notifiee (author or watching) was quoted
+	 * reaction - notifiee (author or watching) had a reaction added to the note
+	 * pollVote - new vote in a poll notifiee authored or watched
+	 * pollEnded - notifiee's poll ended
+	 * receiveFollowRequest - notifiee received a new follow request
+	 * followRequestAccepted - notifier accepted notifees follow request
+	 * groupInvited - notifiee was invited into a group
+	 * move - notifier moved
+	 * app - custom application notification
 	 */
 	@Index()
 	@Column('enum', {
@@ -129,6 +130,19 @@ export class Notification {
 	})
 	public choice: number | null;
 
+	@Column({
+		...id(),
+		nullable: true,
+		comment: 'The ID of the moved to account.',
+	})
+	public moveTargetId: User['id'] | null;
+
+	@ManyToOne(() => User, {
+		onDelete: 'CASCADE',
+	})
+	@JoinColumn()
+	public moveTarget: User | null;
+
 	/**
 	 * アプリ通知のbody
 	 */

packages/backend/src/models/entities/user.ts

@@ -1,4 +1,4 @@
-import { Entity, Column, Index, OneToOne, JoinColumn, PrimaryColumn } from 'typeorm';
+import { Entity, Column, Index, OneToOne, ManyToOne, JoinColumn, PrimaryColumn } from 'typeorm';
 import { id } from '../id.js';
 import { DriveFile } from './drive-file.js';
 
@@ -230,6 +230,18 @@ export class User {
 	})
 	public federateBlocks: boolean;
 
+	@Column({
+		...id(),
+		nullable: true,
+	})
+	public movedToId: User['id'] | null;
+
+	@ManyToOne(() => User, {
+		onDelete: 'SET NULL'
+	})
+	@JoinColumn()
+	public movedTo: User | null;
+
 	constructor(data: Partial<User>) {
 		if (data == null) return;
 

packages/backend/src/models/repositories/notification.ts

@@ -44,6 +44,9 @@ export const NotificationRepository = db.getRepository(Notification).extend({
 			...(notification.type === 'groupInvited' ? {
 				invitation: UserGroupInvitations.pack(notification.userGroupInvitationId!),
 			} : {}),
+			...(notification.type === 'move' ? {
+				moveTarget: Users.pack(notification.moveTarget ?? notification.moveTargetId),
+			} : {}),
 			...(notification.type === 'app' ? {
 				body: notification.customBody,
 				header: notification.customHeader || token?.name,

packages/backend/src/models/repositories/user.ts

@@ -300,6 +300,10 @@ export const UserRepository = db.getRepository(User).extend({
 				}),
 			emojis: populateEmojis(user.emojis, user.host),
 			onlineStatus: this.getOnlineStatus(user),
+			movedTo: !user.movedToId ? undefined : this.pack(user.movedTo ?? user.movedToId, me, {
+				...opts,
+				detail: false,
+			}),
 
 			...(opts.detail ? {
 				url: profile!.url,

packages/backend/src/remote/activitypub/kernel/index.ts

@@ -4,7 +4,7 @@ import { Resolver } from '@/remote/activitypub/resolver.js';
 import { extractDbHost } from '@/misc/convert-host.js';
 import { shouldBlockInstance } from '@/misc/should-block-instance.js';
 import { apLogger } from '../logger.js';
-import { IObject, isCreate, isDelete, isUpdate, isRead, isFollow, isAccept, isReject, isAdd, isRemove, isAnnounce, isLike, isUndo, isBlock, isCollectionOrOrderedCollection, isCollection, isFlag, getApId } from '../type.js';
+import { IObject, isCreate, isDelete, isUpdate, isRead, isFollow, isAccept, isReject, isAdd, isRemove, isAnnounce, isLike, isUndo, isBlock, isCollectionOrOrderedCollection, isCollection, isFlag, isMove, getApId } from '../type.js';
 import create from './create/index.js';
 import performDeleteActivity from './delete/index.js';
 import performUpdateActivity from './update/index.js';
@@ -19,6 +19,7 @@ import add from './add/index.js';
 import remove from './remove/index.js';
 import block from './block/index.js';
 import flag from './flag/index.js';
+import { move } from './move/index.js';
 
 export async function performActivity(actor: CacheableRemoteUser, activity: IObject, resolver: Resolver): Promise<void> {
 	if (isCollectionOrOrderedCollection(activity)) {
@@ -73,6 +74,8 @@ async function performOneActivity(actor: CacheableRemoteUser, activity: IObject,
 		await block(actor, activity);
 	} else if (isFlag(activity)) {
 		await flag(actor, activity);
+	} else if (isMove(activity)) {
+		await move(actor, activity, resolver);
 	} else {
 		apLogger.warn(`unrecognized activity type: ${(activity as any).type}`);
 	}

packages/backend/src/remote/activitypub/kernel/move/index.ts

@@ -0,0 +1,62 @@
+import { IsNull } from 'typeorm';
+import { CacheableRemoteUser } from '@/models/entities/user.js';
+import { resolvePerson } from '@/remote/activitypub/models/person.js';
+import { Followings, Users } from '@/models/index.js';
+import { createNotification } from '@/services/create-notification.js';
+import Resolver from '../../resolver.js';
+import { IMove, isActor, getApId } from '../../type.js';
+
+export async function move(actor: CacheableRemoteUser, activity: IMove, resolver: Resolver): Promise<void> {
+	// actor is not move origin
+	if (activity.object == null || getApId(activity.object) !== actor.uri) return;
+
+	// actor already moved
+	if (actor.movedTo != null) return;
+
+	// no move target
+	if (activity.target == null) return;
+
+	/* the database resolver can not be used here, because:
+	 * 1. It must be ensured that the latest data is used.
+	 * 2. The AP representation is needed, because `alsoKnownAs`
+	 *    is not stored in the database.
+	 * This also checks whether the move target is blocked
+	 */
+	const movedToAp = await resolver.resolve(getApId(activity.target));
+
+	// move target is not an actor
+	if (!isActor(movedToAp)) return;
+
+	// move destination has not accepted
+	if (!Array.isArray(movedToAp.alsoKnownAs) || !movedToAp.alsoKnownAs.includes(actor.id)) return;
+
+	// ensure the user exists
+	const movedTo = await resolvePerson(getApId(activity.target), resolver, movedToAp);
+	// move target is already suspended
+	if (movedTo.isSuspended) return;
+
+	// process move for local followers
+	const followings = Followings.find({
+		select: {
+			followerId: true,
+		},
+		where: {
+			followeeId: actor.id,
+			followerHost: IsNull(),
+		},
+	});
+
+	await Promise.all([
+		Users.update(actor.id, {
+			movedToId: movedTo.id,
+		}),
+		...followings.map(async (following) => {
+			// TODO: autoAcceptMove?
+
+			await createNotification(following.followerId, 'move', {
+				notifierId: actor.id,
+				moveTargetId: movedTo.id,
+			});
+		}),
+	]);
+}

packages/backend/src/remote/activitypub/models/person.ts

@@ -39,7 +39,7 @@ const summaryLength = 2048;
  * @param x Fetched object
  * @param uri Fetch target URI
  */
-function validateActor(x: IObject): IActor {
+async function validateActor(x: IObject, resolver: Resolver): Promise<IActor> {
 	if (x == null) {
 		throw new Error('invalid Actor: object is null');
 	}
@@ -61,6 +61,22 @@ function validateActor(x: IObject): IActor {
 		throw new StatusError('cannot resolve local user', 400, 'cannot resolve local user');
 	}
 
+	if (x.movedTo !== undefined) {
+		if (!(typeof x.movedTo === 'string' && x.movedTo.length > 0)) {
+			throw new Error('invalid Actor: wrong movedTo');
+		}
+		if (x.movedTo === uri) {
+			throw new Error('invalid Actor: moved to self');
+		}
+		// This may throw an exception if we cannot resolve the move target.
+		// If we are processing an incoming activity, this is desired behaviour
+		// because that will cause the activity to be retried.
+		await resolvePerson(x.movedTo, resolver)
+			.then(moveTarget => {
+				x.movedTo = moveTarget.id
+			});
+	}
+
 	if (!(typeof x.inbox === 'string' && x.inbox.length > 0)) {
 		throw new Error('invalid Actor: wrong inbox');
 	}
@@ -137,7 +153,7 @@ export async function fetchPerson(uri: string): Promise<CacheableUser | null> {
 export async function createPerson(value: string | IObject, resolver: Resolver): Promise<User> {
 	const object = await resolver.resolve(value) as any;
 
-	const person = validateActor(object);
+	const person = await validateActor(object, resolver);
 
 	apLogger.info(`Creating the Person: ${person.id}`);
 
@@ -177,6 +193,7 @@ export async function createPerson(value: string | IObject, resolver: Resolver):
 				isBot,
 				isCat: (person as any).isCat === true,
 				showTimelineReplies: false,
+				movedToId: person.movedTo,
 			})) as IRemoteUser;
 
 			await transactionalEntityManager.save(new UserProfile({
@@ -287,7 +304,7 @@ export async function updatePerson(value: IObject | string, resolver: Resolver):
 
 	const object = await resolver.resolve(value);
 
-	const person = validateActor(object);
+	const person = await validateActor(object, resolver);
 
 	apLogger.info(`Updating the Person: ${person.id}`);
 
@@ -328,6 +345,7 @@ export async function updatePerson(value: IObject | string, resolver: Resolver):
 		isCat: (person as any).isCat === true,
 		isLocked: !!person.manuallyApprovesFollowers,
 		isExplorable: !!person.discoverable,
+		movedToId: person.movedTo,
 	} as Partial<User>;
 
 	if (avatar) {
@@ -376,7 +394,7 @@ export async function updatePerson(value: IObject | string, resolver: Resolver):
  * If the target Person is registered in FoundKey, return it; otherwise, fetch it from a remote server and return it.
  * Fetch the person from the remote server, register it in FoundKey, and return it.
  */
-export async function resolvePerson(uri: string, resolver: Resolver): Promise<CacheableUser> {
+export async function resolvePerson(uri: string, resolver: Resolver, hint?: IObject): Promise<CacheableUser> {
 	if (typeof uri !== 'string') throw new Error('uri is not string');
 
 	//#region このサーバーに既に登録されていたらそれを返す
@@ -388,7 +406,7 @@ export async function resolvePerson(uri: string, resolver: Resolver): Promise<Ca
 	//#endregion
 
 	// リモートサーバーからフェッチしてきて登録
-	return await createPerson(uri, resolver);
+	return await createPerson(hint ?? uri, resolver);
 }
 
 export function analyzeAttachments(attachments: IObject | IObject[] | undefined) {

packages/backend/src/remote/activitypub/type.ts

@@ -296,6 +296,10 @@ export interface IFlag extends IActivity {
 	type: 'Flag';
 }
 
+export interface IMove extends IActivity {
+	type: 'Move';
+}
+
 export const isCreate = (object: IObject): object is ICreate => getApType(object) === 'Create';
 export const isDelete = (object: IObject): object is IDelete => getApType(object) === 'Delete';
 export const isUpdate = (object: IObject): object is IUpdate => getApType(object) === 'Update';
@@ -310,6 +314,7 @@ export const isLike = (object: IObject): object is ILike => getApType(object) ==
 export const isAnnounce = (object: IObject): object is IAnnounce => getApType(object) === 'Announce';
 export const isBlock = (object: IObject): object is IBlock => getApType(object) === 'Block';
 export const isFlag = (object: IObject): object is IFlag => getApType(object) === 'Flag';
+export const isMove = (object: IObject): object is IMove => getApType(object) === 'Move';
 
 export interface ILink {
 	href: string;

packages/client/src/components/notification.vue

@@ -15,6 +15,7 @@
 			<i v-else-if="notification.type === 'quote'" class="fas fa-quote-left"></i>
 			<i v-else-if="notification.type === 'pollVote'" class="fas fa-poll-h"></i>
 			<i v-else-if="notification.type === 'pollEnded'" class="fas fa-poll-h"></i>
+			<i v-else-if="notification.type === 'move'" class="fas fa-suitcase"></i>
 			<!-- notification.reaction が null になることはまずないが、ここでoptional chaining使うと一部ブラウザで刺さるので念の為 -->
 			<MkEmoji
 				v-else-if="notification.type === 'reaction'"
@@ -86,6 +87,14 @@
 				<button class="_textButton" @click="rejectGroupInvitation()">{{ i18n.ts.reject }}</button>
 			</div>
 		</span>
+		<span v-if="notification.type === 'move'" class="text" style="opacity: 0.6;">
+			<I18n :src="i18n.ts.movedTo">
+				<template #handle>
+					<MkAcct :user="notification.moveTarget"/>
+				</template>
+			</I18n>
+			<div v-if="full"><MkFollowButton :user="notification.moveTarget" :full="true"/></div>
+		</span>
 		<span v-if="notification.type === 'app'" class="text">
 			<Mfm :text="notification.body" :nowrap="!full"/>
 		</span>

packages/client/src/pages/user/home.vue

@@ -9,6 +9,16 @@
 			<div class="profile">
 				<MkRemoteCaution v-if="user.host != null" :href="user.url" class="warn"/>
 
+				<MkInfo v-if="user.movedTo" class="moved">
+					<I18n :src="i18n.ts.movedTo" tag="span">
+						<template #handle>
+							<MkA :to="userPage(user.movedTo)" style="color: var(--accent);">
+								<MkAcct :user="user.movedTo"/>
+							</MkA>
+						</template>
+					</I18n>
+				</MkInfo>
+
 				<div :key="user.id" class="_block main">
 					<div class="banner-container" :style="style">
 						<div ref="bannerEl" class="banner" :style="style"></div>
@@ -193,6 +203,10 @@ onUnmounted(() => {
 
 		> .profile {
 
+			> .moved {
+				margin-bottom: 1em;
+			}
+
 			> .main {
 				position: relative;
 				overflow: hidden;

packages/foundkey-js/src/consts.ts

@@ -1,4 +1,4 @@
-export const notificationTypes = ['follow', 'mention', 'reply', 'renote', 'quote', 'reaction', 'pollVote', 'pollEnded', 'receiveFollowRequest', 'followRequestAccepted', 'groupInvited', 'app'] as const;
+export const notificationTypes = ['follow', 'mention', 'reply', 'renote', 'quote', 'reaction', 'pollVote', 'pollEnded', 'receiveFollowRequest', 'followRequestAccepted', 'groupInvited', 'move', 'app'] as const;
 
 export const noteNotificationTypes = ['mention', 'reply', 'renote', 'quote', 'reaction', 'pollVote', 'pollEnded'] as const;
 

packages/foundkey-js/src/entities.ts

@@ -28,6 +28,7 @@ export type UserLite = {
 		faviconUrl: Instance['faviconUrl'];
 		themeColor: Instance['themeColor'];
 	};
+	movedTo?: UserLite;
 };
 
 export type UserDetailed = UserLite & {
@@ -223,6 +224,11 @@ export type Notification = {
 	invitation: UserGroup;
 	user: User;
 	userId: User['id'];
+} | {
+	type: 'move',
+	user: User;
+	userId: User['id'];
+	moveTarget: User;
 } | {
 	type: 'app';
 	header?: string | null;

packages/sw/src/scripts/create-notification.ts

@@ -217,6 +217,20 @@ async function composeNotification<K extends keyof pushNotificationDataMap>(data
 						],
 					}];
 
+				case 'move':
+					return [t('_notification.moved', { name: getUserName(data.body.user) }), {
+						body: getUserName(data.body.moveTarget),
+						icon: data.body.moveTarget.avatarUrl,
+						badge: iconUrl('suitcase'),
+						data,
+						action: [
+							{
+								action: 'accept',
+								title: t('follow'),
+							},
+						],
+					}];
+
 				case 'app':
 						return [data.body.header || data.body.body, {
 							body: data.body.header && data.body.body,

packages/sw/src/sw.ts

@@ -96,6 +96,9 @@ self.addEventListener('notificationclick', <K extends keyof pushNotificationData
 							case 'groupInvited':
 								await swos.api('users/groups/invitations/accept', id, { invitationId: data.body.invitation.id });
 								break;
+							case 'move':
+								await swos.api('following/create', id, { userId: data.body.moveTarget.id });
+								break;
 						}
 						break;
 					case 'reject':