about authentication in nestjs

[betelgense]

Following the Nestjs documentation you can see that the user service is injected, but in this case what should the approach be? Inject the userRepo? use the QueryBus of find-users? create a service in the user module just to satisfy the authentication service?

import { Injectable, UnauthorizedException } from '@nestjs/common';
import { UsersService } from '../users/users.service';

@Injectable()
export class AuthService {
  constructor(private usersService: UsersService) {}

  async signIn(username: string, pass: string): Promise<any> {
    const user = await this.usersService.findOne(username);
    if (user?.password !== pass) {
      throw new UnauthorizedException();
    }
    const { password, ...result } = user;
    // TODO: Generate a JWT and return it here
    // instead of the user object
    return result;
  }
}

Thanks in advance

[Sairyss]

If you have a query for findUsers, use that. Otherwise injecting userRepo is an option too.