import { Injectable, UnauthorizedException } from '@nestjs/common';
import { PassportStrategy } from '@nestjs/passport';
import { Strategy } from 'passport-local';

import { AuthService } from '../auth.service';
import { Admin } from '@database/entities/admin.entity';

@Injectable()
export class LocalStrategy extends PassportStrategy(Strategy) {
  constructor(private readonly authService: AuthService) {
    super({
      usernameField: 'account',
      passwordField: 'password',
    });
  }

  async validate(account: string, password: string): Promise<Admin> {
    const admin = await this.authService.validateUser(account, password);
    if (!admin) {
      throw new UnauthorizedException('账号或密码错误');
    }
    return admin;
  }
}