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/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
import { Inject, Injectable, OnApplicationShutdown, OnModuleInit } from '@nestjs/common';
import * as Redis from 'ioredis';
import { ModuleRef } from '@nestjs/core';
import type { MiMeta, UserListMembershipsRepository } from '@/models/_.js';
import type { MiUser } from '@/models/User.js';
import type { MiUserList } from '@/models/UserList.js';
import type { MiUserListMembership } from '@/models/UserListMembership.js';
import { IdService } from '@/core/IdService.js';
import type { GlobalEvents, InternalEventTypes } from '@/core/GlobalEventService.js';
import { GlobalEventService } from '@/core/GlobalEventService.js';
import { DI } from '@/di-symbols.js';
import { UserEntityService } from '@/core/entities/UserEntityService.js';
import { bindThis } from '@/decorators.js';
import { QueueService } from '@/core/QueueService.js';
import { QuantumKVCache } from '@/misc/QuantumKVCache.js';
import { RoleService } from '@/core/RoleService.js';
import { SystemAccountService } from '@/core/SystemAccountService.js';
import { InternalEventService } from '@/core/InternalEventService.js';
@Injectable()
export class UserListService implements OnApplicationShutdown, OnModuleInit {
public static TooManyUsersError = class extends Error {};
public membersCache: QuantumKVCache<Set<string>>;
private roleService: RoleService;
constructor(
private moduleRef: ModuleRef,
@Inject(DI.redis)
private redisClient: Redis.Redis,
@Inject(DI.redisForSub)
private redisForSub: Redis.Redis,
@Inject(DI.userListMembershipsRepository)
private userListMembershipsRepository: UserListMembershipsRepository,
@Inject(DI.meta)
private readonly meta: MiMeta,
private userEntityService: UserEntityService,
private idService: IdService,
private globalEventService: GlobalEventService,
private queueService: QueueService,
private systemAccountService: SystemAccountService,
private readonly internalEventService: InternalEventService,
) {
this.membersCache = new QuantumKVCache<Set<string>>(this.internalEventService, 'userListMembers', {
lifetime: 1000 * 60 * 30, // 30m
fetcher: (key) => this.userListMembershipsRepository.find({ where: { userListId: key }, select: ['userId'] }).then(xs => new Set(xs.map(x => x.userId))),
});
this.internalEventService.on('userListMemberAdded', this.onMessage);
this.internalEventService.on('userListMemberRemoved', this.onMessage);
}
async onModuleInit() {
this.roleService = this.moduleRef.get('RoleService');
}
@bindThis
private async onMessage<E extends 'userListMemberAdded' | 'userListMemberRemoved'>(body: InternalEventTypes[E], type: E): Promise<void> {
{
switch (type) {
case 'userListMemberAdded': {
const { userListId, memberId } = body;
const members = this.membersCache.get(userListId);
if (members) {
members.add(memberId);
}
break;
}
case 'userListMemberRemoved': {
const { userListId, memberId } = body;
const members = this.membersCache.get(userListId);
if (members) {
members.delete(memberId);
}
break;
}
default:
break;
}
}
}
@bindThis
public async addMember(target: MiUser, list: MiUserList, me: MiUser) {
const currentCount = await this.userListMembershipsRepository.countBy({
userListId: list.id,
});
if (currentCount >= (await this.roleService.getUserPolicies(me.id)).userEachUserListsLimit) {
throw new UserListService.TooManyUsersError();
}
await this.userListMembershipsRepository.insert({
id: this.idService.gen(),
userId: target.id,
userListId: list.id,
userListUserId: list.userId,
} as MiUserListMembership);
this.globalEventService.publishInternalEvent('userListMemberAdded', { userListId: list.id, memberId: target.id });
this.globalEventService.publishUserListStream(list.id, 'userAdded', await this.userEntityService.pack(target));
// このインスタンス内にこのリモートユーザーをフォローしているユーザーがいなくても投稿を受け取るためにダミーのユーザーがフォローしたということにする
if (this.userEntityService.isRemoteUser(target) && this.meta.enableProxyAccount) {
const proxy = await this.systemAccountService.fetch('proxy');
this.queueService.createFollowJob([{ from: { id: proxy.id }, to: { id: target.id } }]);
}
}
@bindThis
public async removeMember(target: MiUser, list: MiUserList) {
await this.userListMembershipsRepository.delete({
userId: target.id,
userListId: list.id,
});
this.globalEventService.publishInternalEvent('userListMemberRemoved', { userListId: list.id, memberId: target.id });
this.globalEventService.publishUserListStream(list.id, 'userRemoved', await this.userEntityService.pack(target));
}
@bindThis
public async updateMembership(target: MiUser, list: MiUserList, options: { withReplies?: boolean }) {
const membership = await this.userListMembershipsRepository.findOneBy({
userId: target.id,
userListId: list.id,
});
if (membership == null) {
throw new Error('User is not a member of the list');
}
await this.userListMembershipsRepository.update({
id: membership.id,
}, {
withReplies: options.withReplies,
});
}
@bindThis
public dispose(): void {
this.internalEventService.off('userListMemberAdded', this.onMessage);
this.internalEventService.off('userListMemberRemoved', this.onMessage);
this.membersCache.dispose();
}
@bindThis
public onApplicationShutdown(signal?: string | undefined): void {
this.dispose();
}
}
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