drop group (#9942)

* drop group

* Update operations.ts

15 files changed, 4 insertions, 994 deletions

diff --git a/packages/backend/src/server/api/endpoints/antennas/create.ts b/packages/backend/src/server/api/endpoints/antennas/create.ts
index a1553b6a80..bc5d249ae5 100644
--- a/packages/backend/src/server/api/endpoints/antennas/create.ts
+++ b/packages/backend/src/server/api/endpoints/antennas/create.ts
@@ -1,7 +1,7 @@
 import { Inject, Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
 import { IdService } from '@/core/IdService.js';
-import type { UserListsRepository, UserGroupJoiningsRepository, AntennasRepository } from '@/models/index.js';
+import type { UserListsRepository, AntennasRepository } from '@/models/index.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { AntennaEntityService } from '@/core/entities/AntennaEntityService.js';
 import { DI } from '@/di-symbols.js';
@@ -22,12 +22,6 @@ export const meta = {
 			id: '95063e93-a283-4b8b-9aa5-bcdb8df69a7f',
 		},
 
-		noSuchUserGroup: {
-			message: 'No such user group.',
-			code: 'NO_SUCH_USER_GROUP',
-			id: 'aa3c0b9a-8cae-47c0-92ac-202ce5906682',
-		},
-
 		tooManyAntennas: {
 			message: 'You cannot create antenna any more.',
 			code: 'TOO_MANY_ANTENNAS',
@@ -46,9 +40,8 @@ export const paramDef = {
 	type: 'object',
 	properties: {
 		name: { type: 'string', minLength: 1, maxLength: 100 },
-		src: { type: 'string', enum: ['home', 'all', 'users', 'list', 'group'] },
+		src: { type: 'string', enum: ['home', 'all', 'users', 'list'] },
 		userListId: { type: 'string', format: 'misskey:id', nullable: true },
-		userGroupId: { type: 'string', format: 'misskey:id', nullable: true },
 		keywords: { type: 'array', items: {
 			type: 'array', items: {
 				type: 'string',
@@ -80,9 +73,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 		@Inject(DI.userListsRepository)
 		private userListsRepository: UserListsRepository,
 
-		@Inject(DI.userGroupJoiningsRepository)
-		private userGroupJoiningsRepository: UserGroupJoiningsRepository,
-
 		private antennaEntityService: AntennaEntityService,
 		private roleService: RoleService,
 		private idService: IdService,
@@ -97,7 +87,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			}
 
 			let userList;
-			let userGroupJoining;
 
 			if (ps.src === 'list' && ps.userListId) {
 				userList = await this.userListsRepository.findOneBy({
@@ -108,15 +97,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				if (userList == null) {
 					throw new ApiError(meta.errors.noSuchUserList);
 				}
-			} else if (ps.src === 'group' && ps.userGroupId) {
-				userGroupJoining = await this.userGroupJoiningsRepository.findOneBy({
-					userGroupId: ps.userGroupId,
-					userId: me.id,
-				});
-
-				if (userGroupJoining == null) {
-					throw new ApiError(meta.errors.noSuchUserGroup);
-				}
 			}
 
 			const antenna = await this.antennasRepository.insert({
@@ -126,7 +106,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				name: ps.name,
 				src: ps.src,
 				userListId: userList ? userList.id : null,
-				userGroupJoiningId: userGroupJoining ? userGroupJoining.id : null,
 				keywords: ps.keywords,
 				excludeKeywords: ps.excludeKeywords,
 				users: ps.users,
diff --git a/packages/backend/src/server/api/endpoints/antennas/update.ts b/packages/backend/src/server/api/endpoints/antennas/update.ts
index 1955eac949..3f85442131 100644
--- a/packages/backend/src/server/api/endpoints/antennas/update.ts
+++ b/packages/backend/src/server/api/endpoints/antennas/update.ts
@@ -1,6 +1,6 @@
 import { Inject, Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
-import type { AntennasRepository, UserListsRepository, UserGroupJoiningsRepository } from '@/models/index.js';
+import type { AntennasRepository, UserListsRepository } from '@/models/index.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { AntennaEntityService } from '@/core/entities/AntennaEntityService.js';
 import { DI } from '@/di-symbols.js';
@@ -25,12 +25,6 @@ export const meta = {
 			code: 'NO_SUCH_USER_LIST',
 			id: '1c6b35c9-943e-48c2-81e4-2844989407f7',
 		},
-
-		noSuchUserGroup: {
-			message: 'No such user group.',
-			code: 'NO_SUCH_USER_GROUP',
-			id: '109ed789-b6eb-456e-b8a9-6059d567d385',
-		},
 	},
 
 	res: {
@@ -45,9 +39,8 @@ export const paramDef = {
 	properties: {
 		antennaId: { type: 'string', format: 'misskey:id' },
 		name: { type: 'string', minLength: 1, maxLength: 100 },
-		src: { type: 'string', enum: ['home', 'all', 'users', 'list', 'group'] },
+		src: { type: 'string', enum: ['home', 'all', 'users', 'list'] },
 		userListId: { type: 'string', format: 'misskey:id', nullable: true },
-		userGroupId: { type: 'string', format: 'misskey:id', nullable: true },
 		keywords: { type: 'array', items: {
 			type: 'array', items: {
 				type: 'string',
@@ -78,9 +71,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 
 		@Inject(DI.userListsRepository)
 		private userListsRepository: UserListsRepository,
-
-		@Inject(DI.userGroupJoiningsRepository)
-		private userGroupJoiningsRepository: UserGroupJoiningsRepository,
 		
 		private antennaEntityService: AntennaEntityService,
 		private globalEventService: GlobalEventService,
@@ -97,7 +87,6 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			}
 
 			let userList;
-			let userGroupJoining;
 
 			if (ps.src === 'list' && ps.userListId) {
 				userList = await this.userListsRepository.findOneBy({
@@ -108,22 +97,12 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				if (userList == null) {
 					throw new ApiError(meta.errors.noSuchUserList);
 				}
-			} else if (ps.src === 'group' && ps.userGroupId) {
-				userGroupJoining = await this.userGroupJoiningsRepository.findOneBy({
-					userGroupId: ps.userGroupId,
-					userId: me.id,
-				});
-
-				if (userGroupJoining == null) {
-					throw new ApiError(meta.errors.noSuchUserGroup);
-				}
 			}
 
 			await this.antennasRepository.update(antenna.id, {
 				name: ps.name,
 				src: ps.src,
 				userListId: userList ? userList.id : null,
-				userGroupJoiningId: userGroupJoining ? userGroupJoining.id : null,
 				keywords: ps.keywords,
 				excludeKeywords: ps.excludeKeywords,
 				users: ps.users,
diff --git a/packages/backend/src/server/api/endpoints/i/user-group-invites.ts b/packages/backend/src/server/api/endpoints/i/user-group-invites.ts
deleted file mode 100644
index 1ad2f7d68f..0000000000
--- a/packages/backend/src/server/api/endpoints/i/user-group-invites.ts
+++ /dev/null
@@ -1,69 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import type { UserGroupInvitationsRepository } from '@/models/index.js';
-import { QueryService } from '@/core/QueryService.js';
-import { UserGroupInvitationEntityService } from '@/core/entities/UserGroupInvitationEntityService.js';
-import { DI } from '@/di-symbols.js';
-
-export const meta = {
-	tags: ['account', 'groups'],
-
-	requireCredential: true,
-
-	kind: 'read:user-groups',
-
-	res: {
-		type: 'array',
-		optional: false, nullable: false,
-		items: {
-			type: 'object',
-			optional: false, nullable: false,
-			properties: {
-				id: {
-					type: 'string',
-					optional: false, nullable: false,
-					format: 'id',
-				},
-				group: {
-					type: 'object',
-					optional: false, nullable: false,
-					ref: 'UserGroup',
-				},
-			},
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		limit: { type: 'integer', minimum: 1, maximum: 100, default: 10 },
-		sinceId: { type: 'string', format: 'misskey:id' },
-		untilId: { type: 'string', format: 'misskey:id' },
-	},
-	required: [],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.userGroupInvitationsRepository)
-		private userGroupInvitationsRepository: UserGroupInvitationsRepository,
-
-		private userGroupInvitationEntityService: UserGroupInvitationEntityService,
-		private queryService: QueryService,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			const query = this.queryService.makePaginationQuery(this.userGroupInvitationsRepository.createQueryBuilder('invitation'), ps.sinceId, ps.untilId)
-				.andWhere('invitation.userId = :meId', { meId: me.id })
-				.leftJoinAndSelect('invitation.userGroup', 'user_group');
-
-			const invitations = await query
-				.take(ps.limit)
-				.getMany();
-
-			return await this.userGroupInvitationEntityService.packMany(invitations);
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/users/groups/create.ts b/packages/backend/src/server/api/endpoints/users/groups/create.ts
deleted file mode 100644
index 24dbf5ca3c..0000000000
--- a/packages/backend/src/server/api/endpoints/users/groups/create.ts
+++ /dev/null
@@ -1,72 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import ms from 'ms';
-import type { UserGroupsRepository, UserGroupJoiningsRepository } from '@/models/index.js';
-import { IdService } from '@/core/IdService.js';
-import type { UserGroup } from '@/models/entities/UserGroup.js';
-import type { UserGroupJoining } from '@/models/entities/UserGroupJoining.js';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import { UserGroupEntityService } from '@/core/entities/UserGroupEntityService.js';
-import { DI } from '@/di-symbols.js';
-
-export const meta = {
-	tags: ['groups'],
-
-	requireCredential: true,
-
-	kind: 'write:user-groups',
-
-	description: 'Create a new group.',
-
-	limit: {
-		duration: ms('1hour'),
-		max: 10,
-	},
-
-	res: {
-		type: 'object',
-		optional: false, nullable: false,
-		ref: 'UserGroup',
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		name: { type: 'string', minLength: 1, maxLength: 100 },
-	},
-	required: ['name'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.userGroupsRepository)
-		private userGroupsRepository: UserGroupsRepository,
-
-		@Inject(DI.userGroupJoiningsRepository)
-		private userGroupJoiningsRepository: UserGroupJoiningsRepository,
-
-		private userGroupEntityService: UserGroupEntityService,
-		private idService: IdService,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			const userGroup = await this.userGroupsRepository.insert({
-				id: this.idService.genId(),
-				createdAt: new Date(),
-				userId: me.id,
-				name: ps.name,
-			} as UserGroup).then(x => this.userGroupsRepository.findOneByOrFail(x.identifiers[0]));
-
-			// Push the owner
-			await this.userGroupJoiningsRepository.insert({
-				id: this.idService.genId(),
-				createdAt: new Date(),
-				userId: me.id,
-				userGroupId: userGroup.id,
-			} as UserGroupJoining);
-
-			return await this.userGroupEntityService.pack(userGroup);
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/users/groups/delete.ts b/packages/backend/src/server/api/endpoints/users/groups/delete.ts
deleted file mode 100644
index d238ae9f16..0000000000
--- a/packages/backend/src/server/api/endpoints/users/groups/delete.ts
+++ /dev/null
@@ -1,53 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import type { UserGroupsRepository } from '@/models/index.js';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import { DI } from '@/di-symbols.js';
-import { ApiError } from '../../../error.js';
-
-export const meta = {
-	tags: ['groups'],
-
-	requireCredential: true,
-
-	kind: 'write:user-groups',
-
-	description: 'Delete an existing group.',
-
-	errors: {
-		noSuchGroup: {
-			message: 'No such group.',
-			code: 'NO_SUCH_GROUP',
-			id: '63dbd64c-cd77-413f-8e08-61781e210b38',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		groupId: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['groupId'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.userGroupsRepository)
-		private userGroupsRepository: UserGroupsRepository,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			const userGroup = await this.userGroupsRepository.findOneBy({
-				id: ps.groupId,
-				userId: me.id,
-			});
-
-			if (userGroup == null) {
-				throw new ApiError(meta.errors.noSuchGroup);
-			}
-
-			await this.userGroupsRepository.delete(userGroup.id);
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/users/groups/invitations/accept.ts b/packages/backend/src/server/api/endpoints/users/groups/invitations/accept.ts
deleted file mode 100644
index f154a57f61..0000000000
--- a/packages/backend/src/server/api/endpoints/users/groups/invitations/accept.ts
+++ /dev/null
@@ -1,72 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import type { UserGroupInvitationsRepository, UserGroupJoiningsRepository } from '@/models/index.js';
-import { IdService } from '@/core/IdService.js';
-import type { UserGroupJoining } from '@/models/entities/UserGroupJoining.js';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import { DI } from '@/di-symbols.js';
-import { ApiError } from '../../../../error.js';
-
-export const meta = {
-	tags: ['groups', 'users'],
-
-	requireCredential: true,
-
-	kind: 'write:user-groups',
-
-	description: 'Join a group the authenticated user has been invited to.',
-
-	errors: {
-		noSuchInvitation: {
-			message: 'No such invitation.',
-			code: 'NO_SUCH_INVITATION',
-			id: '98c11eca-c890-4f42-9806-c8c8303ebb5e',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		invitationId: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['invitationId'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.userGroupInvitationsRepository)
-		private userGroupInvitationsRepository: UserGroupInvitationsRepository,
-
-		@Inject(DI.userGroupJoiningsRepository)
-		private userGroupJoiningsRepository: UserGroupJoiningsRepository,
-
-		private idService: IdService,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			// Fetch the invitation
-			const invitation = await this.userGroupInvitationsRepository.findOneBy({
-				id: ps.invitationId,
-			});
-
-			if (invitation == null) {
-				throw new ApiError(meta.errors.noSuchInvitation);
-			}
-
-			if (invitation.userId !== me.id) {
-				throw new ApiError(meta.errors.noSuchInvitation);
-			}
-
-			// Push the user
-			await this.userGroupJoiningsRepository.insert({
-				id: this.idService.genId(),
-				createdAt: new Date(),
-				userId: me.id,
-				userGroupId: invitation.userGroupId,
-			} as UserGroupJoining);
-
-			this.userGroupInvitationsRepository.delete(invitation.id);
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/users/groups/invitations/reject.ts b/packages/backend/src/server/api/endpoints/users/groups/invitations/reject.ts
deleted file mode 100644
index 1fd3b2f4b3..0000000000
--- a/packages/backend/src/server/api/endpoints/users/groups/invitations/reject.ts
+++ /dev/null
@@ -1,57 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import type { UserGroupInvitationsRepository } from '@/models/index.js';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import { DI } from '@/di-symbols.js';
-import { ApiError } from '../../../../error.js';
-
-export const meta = {
-	tags: ['groups', 'users'],
-
-	requireCredential: true,
-
-	kind: 'write:user-groups',
-
-	description: 'Delete an existing group invitation for the authenticated user without joining the group.',
-
-	errors: {
-		noSuchInvitation: {
-			message: 'No such invitation.',
-			code: 'NO_SUCH_INVITATION',
-			id: 'ad7471d4-2cd9-44b4-ac68-e7136b4ce656',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		invitationId: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['invitationId'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.userGroupInvitationsRepository)
-		private userGroupInvitationsRepository: UserGroupInvitationsRepository,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			// Fetch the invitation
-			const invitation = await this.userGroupInvitationsRepository.findOneBy({
-				id: ps.invitationId,
-			});
-
-			if (invitation == null) {
-				throw new ApiError(meta.errors.noSuchInvitation);
-			}
-
-			if (invitation.userId !== me.id) {
-				throw new ApiError(meta.errors.noSuchInvitation);
-			}
-
-			await this.userGroupInvitationsRepository.delete(invitation.id);
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/users/groups/invite.ts b/packages/backend/src/server/api/endpoints/users/groups/invite.ts
deleted file mode 100644
index 2e040c0601..0000000000
--- a/packages/backend/src/server/api/endpoints/users/groups/invite.ts
+++ /dev/null
@@ -1,122 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import type { UserGroupsRepository, UserGroupJoiningsRepository, UserGroupInvitationsRepository } from '@/models/index.js';
-import { IdService } from '@/core/IdService.js';
-import type { UserGroupInvitation } from '@/models/entities/UserGroupInvitation.js';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import { GetterService } from '@/server/api/GetterService.js';
-import { CreateNotificationService } from '@/core/CreateNotificationService.js';
-import { DI } from '@/di-symbols.js';
-import { ApiError } from '../../../error.js';
-
-export const meta = {
-	tags: ['groups', 'users'],
-
-	requireCredential: true,
-
-	kind: 'write:user-groups',
-
-	description: 'Invite a user to an existing group.',
-
-	errors: {
-		noSuchGroup: {
-			message: 'No such group.',
-			code: 'NO_SUCH_GROUP',
-			id: '583f8bc0-8eee-4b78-9299-1e14fc91e409',
-		},
-
-		noSuchUser: {
-			message: 'No such user.',
-			code: 'NO_SUCH_USER',
-			id: 'da52de61-002c-475b-90e1-ba64f9cf13a8',
-		},
-
-		alreadyAdded: {
-			message: 'That user has already been added to that group.',
-			code: 'ALREADY_ADDED',
-			id: '7e35c6a0-39b2-4488-aea6-6ee20bd5da2c',
-		},
-
-		alreadyInvited: {
-			message: 'That user has already been invited to that group.',
-			code: 'ALREADY_INVITED',
-			id: 'ee0f58b4-b529-4d13-b761-b9a3e69f97e6',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		groupId: { type: 'string', format: 'misskey:id' },
-		userId: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['groupId', 'userId'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.userGroupsRepository)
-		private userGroupsRepository: UserGroupsRepository,
-
-		@Inject(DI.userGroupInvitationsRepository)
-		private userGroupInvitationsRepository: UserGroupInvitationsRepository,
-
-		@Inject(DI.userGroupJoiningsRepository)
-		private userGroupJoiningsRepository: UserGroupJoiningsRepository,
-
-		private idService: IdService,
-		private getterService: GetterService,
-		private createNotificationService: CreateNotificationService,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			// Fetch the group
-			const userGroup = await this.userGroupsRepository.findOneBy({
-				id: ps.groupId,
-				userId: me.id,
-			});
-
-			if (userGroup == null) {
-				throw new ApiError(meta.errors.noSuchGroup);
-			}
-
-			// Fetch the user
-			const user = await this.getterService.getUser(ps.userId).catch(err => {
-				if (err.id === '15348ddd-432d-49c2-8a5a-8069753becff') throw new ApiError(meta.errors.noSuchUser);
-				throw err;
-			});
-
-			const joining = await this.userGroupJoiningsRepository.findOneBy({
-				userGroupId: userGroup.id,
-				userId: user.id,
-			});
-
-			if (joining) {
-				throw new ApiError(meta.errors.alreadyAdded);
-			}
-
-			const existInvitation = await this.userGroupInvitationsRepository.findOneBy({
-				userGroupId: userGroup.id,
-				userId: user.id,
-			});
-
-			if (existInvitation) {
-				throw new ApiError(meta.errors.alreadyInvited);
-			}
-
-			const invitation = await this.userGroupInvitationsRepository.insert({
-				id: this.idService.genId(),
-				createdAt: new Date(),
-				userId: user.id,
-				userGroupId: userGroup.id,
-			} as UserGroupInvitation).then(x => this.userGroupInvitationsRepository.findOneByOrFail(x.identifiers[0]));
-
-			// 通知を作成
-			this.createNotificationService.createNotification(user.id, 'groupInvited', {
-				notifierId: me.id,
-				userGroupInvitationId: invitation.id,
-			});
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/users/groups/joined.ts b/packages/backend/src/server/api/endpoints/users/groups/joined.ts
deleted file mode 100644
index 8daee3a6f5..0000000000
--- a/packages/backend/src/server/api/endpoints/users/groups/joined.ts
+++ /dev/null
@@ -1,61 +0,0 @@
-import { Not, In } from 'typeorm';
-import { Inject, Injectable } from '@nestjs/common';
-import type { UserGroupsRepository, UserGroupJoiningsRepository } from '@/models/index.js';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import { UserGroupEntityService } from '@/core/entities/UserGroupEntityService.js';
-import { DI } from '@/di-symbols.js';
-
-export const meta = {
-	tags: ['groups', 'account'],
-
-	requireCredential: true,
-
-	kind: 'read:user-groups',
-
-	description: 'List the groups that the authenticated user is a member of.',
-
-	res: {
-		type: 'array',
-		optional: false, nullable: false,
-		items: {
-			type: 'object',
-			optional: false, nullable: false,
-			ref: 'UserGroup',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {},
-	required: [],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.userGroupsRepository)
-		private userGroupsRepository: UserGroupsRepository,
-
-		@Inject(DI.userGroupJoiningsRepository)
-		private userGroupJoiningsRepository: UserGroupJoiningsRepository,
-
-		private userGroupEntityService: UserGroupEntityService,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			const ownedGroups = await this.userGroupsRepository.findBy({
-				userId: me.id,
-			});
-
-			const joinings = await this.userGroupJoiningsRepository.findBy({
-				userId: me.id,
-				...(ownedGroups.length > 0 ? {
-					userGroupId: Not(In(ownedGroups.map(x => x.id))),
-				} : {}),
-			});
-
-			return await Promise.all(joinings.map(x => this.userGroupEntityService.pack(x.userGroupId)));
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/users/groups/leave.ts b/packages/backend/src/server/api/endpoints/users/groups/leave.ts
deleted file mode 100644
index 846f80e64d..0000000000
--- a/packages/backend/src/server/api/endpoints/users/groups/leave.ts
+++ /dev/null
@@ -1,66 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import type { UserGroupsRepository, UserGroupJoiningsRepository } from '@/models/index.js';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import { DI } from '@/di-symbols.js';
-import { ApiError } from '../../../error.js';
-
-export const meta = {
-	tags: ['groups', 'users'],
-
-	requireCredential: true,
-
-	kind: 'write:user-groups',
-
-	description: 'Leave a group. The owner of a group can not leave. They must transfer ownership or delete the group instead.',
-
-	errors: {
-		noSuchGroup: {
-			message: 'No such group.',
-			code: 'NO_SUCH_GROUP',
-			id: '62780270-1f67-5dc0-daca-3eb510612e31',
-		},
-
-		youAreOwner: {
-			message: 'Your are the owner.',
-			code: 'YOU_ARE_OWNER',
-			id: 'b6d6e0c2-ef8a-9bb8-653d-79f4a3107c69',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		groupId: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['groupId'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.userGroupsRepository)
-		private userGroupsRepository: UserGroupsRepository,
-
-		@Inject(DI.userGroupJoiningsRepository)
-		private userGroupJoiningsRepository: UserGroupJoiningsRepository,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			// Fetch the group
-			const userGroup = await this.userGroupsRepository.findOneBy({
-				id: ps.groupId,
-			});
-
-			if (userGroup == null) {
-				throw new ApiError(meta.errors.noSuchGroup);
-			}
-
-			if (me.id === userGroup.userId) {
-				throw new ApiError(meta.errors.youAreOwner);
-			}
-
-			await this.userGroupJoiningsRepository.delete({ userGroupId: userGroup.id, userId: me.id });
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/users/groups/owned.ts b/packages/backend/src/server/api/endpoints/users/groups/owned.ts
deleted file mode 100644
index 0bc6e8b3fc..0000000000
--- a/packages/backend/src/server/api/endpoints/users/groups/owned.ts
+++ /dev/null
@@ -1,50 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import type { UserGroupsRepository } from '@/models/index.js';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import { UserGroupEntityService } from '@/core/entities/UserGroupEntityService.js';
-import { DI } from '@/di-symbols.js';
-
-export const meta = {
-	tags: ['groups', 'account'],
-
-	requireCredential: true,
-
-	kind: 'read:user-groups',
-
-	description: 'List the groups that the authenticated user is the owner of.',
-
-	res: {
-		type: 'array',
-		optional: false, nullable: false,
-		items: {
-			type: 'object',
-			optional: false, nullable: false,
-			ref: 'UserGroup',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {},
-	required: [],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.userGroupsRepository)
-		private userGroupsRepository: UserGroupsRepository,
-
-		private userGroupEntityService: UserGroupEntityService,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			const userGroups = await this.userGroupsRepository.findBy({
-				userId: me.id,
-			});
-
-			return await Promise.all(userGroups.map(x => this.userGroupEntityService.pack(x)));
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/users/groups/pull.ts b/packages/backend/src/server/api/endpoints/users/groups/pull.ts
deleted file mode 100644
index 409006b0b0..0000000000
--- a/packages/backend/src/server/api/endpoints/users/groups/pull.ts
+++ /dev/null
@@ -1,84 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import type { UserGroupsRepository, UserGroupJoiningsRepository } from '@/models/index.js';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import { GetterService } from '@/server/api/GetterService.js';
-import { DI } from '@/di-symbols.js';
-import { ApiError } from '../../../error.js';
-
-export const meta = {
-	tags: ['groups', 'users'],
-
-	requireCredential: true,
-
-	kind: 'write:user-groups',
-
-	description: 'Removes a specified user from a group. The owner can not be removed.',
-
-	errors: {
-		noSuchGroup: {
-			message: 'No such group.',
-			code: 'NO_SUCH_GROUP',
-			id: '4662487c-05b1-4b78-86e5-fd46998aba74',
-		},
-
-		noSuchUser: {
-			message: 'No such user.',
-			code: 'NO_SUCH_USER',
-			id: '0b5cc374-3681-41da-861e-8bc1146f7a55',
-		},
-
-		isOwner: {
-			message: 'The user is the owner.',
-			code: 'IS_OWNER',
-			id: '1546eed5-4414-4dea-81c1-b0aec4f6d2af',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		groupId: { type: 'string', format: 'misskey:id' },
-		userId: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['groupId', 'userId'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.userGroupsRepository)
-		private userGroupsRepository: UserGroupsRepository,
-
-		@Inject(DI.userGroupJoiningsRepository)
-		private userGroupJoiningsRepository: UserGroupJoiningsRepository,
-
-		private getterService: GetterService,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			// Fetch the group
-			const userGroup = await this.userGroupsRepository.findOneBy({
-				id: ps.groupId,
-				userId: me.id,
-			});
-
-			if (userGroup == null) {
-				throw new ApiError(meta.errors.noSuchGroup);
-			}
-
-			// Fetch the user
-			const user = await this.getterService.getUser(ps.userId).catch(err => {
-				if (err.id === '15348ddd-432d-49c2-8a5a-8069753becff') throw new ApiError(meta.errors.noSuchUser);
-				throw err;
-			});
-
-			if (user.id === userGroup.userId) {
-				throw new ApiError(meta.errors.isOwner);
-			}
-
-			// Pull the user
-			await this.userGroupJoiningsRepository.delete({ userGroupId: userGroup.id, userId: user.id });
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/users/groups/show.ts b/packages/backend/src/server/api/endpoints/users/groups/show.ts
deleted file mode 100644
index 2b0f403f33..0000000000
--- a/packages/backend/src/server/api/endpoints/users/groups/show.ts
+++ /dev/null
@@ -1,74 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import type { UserGroupsRepository, UserGroupJoiningsRepository } from '@/models/index.js';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import { UserGroupEntityService } from '@/core/entities/UserGroupEntityService.js';
-import { DI } from '@/di-symbols.js';
-import { ApiError } from '../../../error.js';
-
-export const meta = {
-	tags: ['groups', 'account'],
-
-	requireCredential: true,
-
-	kind: 'read:user-groups',
-
-	description: 'Show the properties of a group.',
-
-	res: {
-		type: 'object',
-		optional: false, nullable: false,
-		ref: 'UserGroup',
-	},
-
-	errors: {
-		noSuchGroup: {
-			message: 'No such group.',
-			code: 'NO_SUCH_GROUP',
-			id: 'ea04751e-9b7e-487b-a509-330fb6bd6b9b',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		groupId: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['groupId'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.userGroupsRepository)
-		private userGroupsRepository: UserGroupsRepository,
-
-		@Inject(DI.userGroupJoiningsRepository)
-		private userGroupJoiningsRepository: UserGroupJoiningsRepository,
-
-		private userGroupEntityService: UserGroupEntityService,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			// Fetch the group
-			const userGroup = await this.userGroupsRepository.findOneBy({
-				id: ps.groupId,
-			});
-
-			if (userGroup == null) {
-				throw new ApiError(meta.errors.noSuchGroup);
-			}
-
-			const joining = await this.userGroupJoiningsRepository.findOneBy({
-				userId: me.id,
-				userGroupId: userGroup.id,
-			});
-
-			if (joining == null && userGroup.userId !== me.id) {
-				throw new ApiError(meta.errors.noSuchGroup);
-			}
-
-			return await this.userGroupEntityService.pack(userGroup);
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/users/groups/transfer.ts b/packages/backend/src/server/api/endpoints/users/groups/transfer.ts
deleted file mode 100644
index 3130d98ed1..0000000000
--- a/packages/backend/src/server/api/endpoints/users/groups/transfer.ts
+++ /dev/null
@@ -1,100 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import type { UserGroupsRepository, UserGroupJoiningsRepository } from '@/models/index.js';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import { UserGroupEntityService } from '@/core/entities/UserGroupEntityService.js';
-import { GetterService } from '@/server/api/GetterService.js';
-import { DI } from '@/di-symbols.js';
-import { ApiError } from '../../../error.js';
-
-export const meta = {
-	tags: ['groups', 'users'],
-
-	requireCredential: true,
-
-	kind: 'write:user-groups',
-
-	description: 'Transfer ownership of a group from the authenticated user to another user.',
-
-	res: {
-		type: 'object',
-		optional: false, nullable: false,
-		ref: 'UserGroup',
-	},
-
-	errors: {
-		noSuchGroup: {
-			message: 'No such group.',
-			code: 'NO_SUCH_GROUP',
-			id: '8e31d36b-2f88-4ccd-a438-e2d78a9162db',
-		},
-
-		noSuchUser: {
-			message: 'No such user.',
-			code: 'NO_SUCH_USER',
-			id: '711f7ebb-bbb9-4dfa-b540-b27809fed5e9',
-		},
-
-		noSuchGroupMember: {
-			message: 'No such group member.',
-			code: 'NO_SUCH_GROUP_MEMBER',
-			id: 'd31bebee-196d-42c2-9a3e-9474d4be6cc4',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		groupId: { type: 'string', format: 'misskey:id' },
-		userId: { type: 'string', format: 'misskey:id' },
-	},
-	required: ['groupId', 'userId'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.userGroupsRepository)
-		private userGroupsRepository: UserGroupsRepository,
-
-		@Inject(DI.userGroupJoiningsRepository)
-		private userGroupJoiningsRepository: UserGroupJoiningsRepository,
-
-		private userGroupEntityService: UserGroupEntityService,
-		private getterService: GetterService,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			// Fetch the group
-			const userGroup = await this.userGroupsRepository.findOneBy({
-				id: ps.groupId,
-				userId: me.id,
-			});
-
-			if (userGroup == null) {
-				throw new ApiError(meta.errors.noSuchGroup);
-			}
-
-			// Fetch the user
-			const user = await this.getterService.getUser(ps.userId).catch(err => {
-				if (err.id === '15348ddd-432d-49c2-8a5a-8069753becff') throw new ApiError(meta.errors.noSuchUser);
-				throw err;
-			});
-
-			const joining = await this.userGroupJoiningsRepository.findOneBy({
-				userGroupId: userGroup.id,
-				userId: user.id,
-			});
-
-			if (joining == null) {
-				throw new ApiError(meta.errors.noSuchGroupMember);
-			}
-
-			await this.userGroupsRepository.update(userGroup.id, {
-				userId: ps.userId,
-			});
-
-			return await this.userGroupEntityService.pack(userGroup.id);
-		});
-	}
-}
diff --git a/packages/backend/src/server/api/endpoints/users/groups/update.ts b/packages/backend/src/server/api/endpoints/users/groups/update.ts
deleted file mode 100644
index 5af849de14..0000000000
--- a/packages/backend/src/server/api/endpoints/users/groups/update.ts
+++ /dev/null
@@ -1,68 +0,0 @@
-import { Inject, Injectable } from '@nestjs/common';
-import type { UserGroupsRepository } from '@/models/index.js';
-import { Endpoint } from '@/server/api/endpoint-base.js';
-import { UserGroupEntityService } from '@/core/entities/UserGroupEntityService.js';
-import { DI } from '@/di-symbols.js';
-import { ApiError } from '../../../error.js';
-
-export const meta = {
-	tags: ['groups'],
-
-	requireCredential: true,
-
-	kind: 'write:user-groups',
-
-	description: 'Update the properties of a group.',
-
-	res: {
-		type: 'object',
-		optional: false, nullable: false,
-		ref: 'UserGroup',
-	},
-
-	errors: {
-		noSuchGroup: {
-			message: 'No such group.',
-			code: 'NO_SUCH_GROUP',
-			id: '9081cda3-7a9e-4fac-a6ce-908d70f282f6',
-		},
-	},
-} as const;
-
-export const paramDef = {
-	type: 'object',
-	properties: {
-		groupId: { type: 'string', format: 'misskey:id' },
-		name: { type: 'string', minLength: 1, maxLength: 100 },
-	},
-	required: ['groupId', 'name'],
-} as const;
-
-// eslint-disable-next-line import/no-default-export
-@Injectable()
-export default class extends Endpoint<typeof meta, typeof paramDef> {
-	constructor(
-		@Inject(DI.userGroupsRepository)
-		private userGroupsRepository: UserGroupsRepository,
-
-		private userGroupEntityService: UserGroupEntityService,
-	) {
-		super(meta, paramDef, async (ps, me) => {
-			// Fetch the group
-			const userGroup = await this.userGroupsRepository.findOneBy({
-				id: ps.groupId,
-				userId: me.id,
-			});
-
-			if (userGroup == null) {
-				throw new ApiError(meta.errors.noSuchGroup);
-			}
-
-			await this.userGroupsRepository.update(userGroup.id, {
-				name: ps.name,
-			});
-
-			return await this.userGroupEntityService.pack(userGroup.id);
-		});
-	}
-}