Sharkey/packages/backend/src/core/InstanceActorService.ts

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/*
* SPDX-FileCopyrightText: syuilo and other misskey contributors
* SPDX-License-Identifier: AGPL-3.0-only
*/
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import { Inject, Injectable } from '@nestjs/common';
import { IsNull } from 'typeorm';
import type { MiLocalUser } from '@/models/entities/User.js';
import type { UsersRepository } from '@/models/_.js';
import { MemorySingleCache } from '@/misc/cache.js';
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import { DI } from '@/di-symbols.js';
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import { CreateSystemUserService } from '@/core/CreateSystemUserService.js';
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import { bindThis } from '@/decorators.js';
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const ACTOR_USERNAME = 'instance.actor' as const;
@Injectable()
export class InstanceActorService {
private cache: MemorySingleCache<MiLocalUser>;
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constructor(
@Inject(DI.usersRepository)
private usersRepository: UsersRepository,
private createSystemUserService: CreateSystemUserService,
) {
this.cache = new MemorySingleCache<MiLocalUser>(Infinity);
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}
@bindThis
public async getInstanceActor(): Promise<MiLocalUser> {
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const cached = this.cache.get();
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if (cached) return cached;
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const user = await this.usersRepository.findOneBy({
host: IsNull(),
username: ACTOR_USERNAME,
}) as MiLocalUser | undefined;
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if (user) {
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this.cache.set(user);
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return user;
} else {
const created = await this.createSystemUserService.createSystemUser(ACTOR_USERNAME) as MiLocalUser;
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this.cache.set(created);
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return created;
}
}
}