なんかもうめっちゃ変えた

packages/backend/src/core/ProxyAccountService.ts

@@ -0,0 +1,22 @@
+import { Inject, Injectable } from '@nestjs/common';
+import { UsersRepository } from '@/models/index.js';
+import type { ILocalUser, User } from '@/models/entities/User.js';
+import { DI } from '@/di-symbols.js';
+import { MetaService } from './MetaService.js';
+
+@Injectable()
+export class ProxyAccountService {
+	constructor(
+		@Inject(DI.usersRepository)
+		private usersRepository: UsersRepository,
+
+		private metaService: MetaService,
+	) {
+	}
+
+	public async fetch(): Promise<ILocalUser | null> {
+		const meta = await this.metaService.fetch();
+		if (meta.proxyAccountId == null) return null;
+		return await this.usersRepository.findOneByOrFail({ id: meta.proxyAccountId }) as ILocalUser;
+	}
+}