fairnesscoop / permacoop

import {QueryHandler} from '@nestjs/cqrs';

import {Inject} from '@nestjs/common';

import {LoginQuery} from './LoginQuery';

import {AuthenticatedView} from '../View/AuthenticatedView';

import {IUserRepository} from 'src/Domain/HumanResource/User/Repository/IUserRepository';

import {IPasswordEncoder} from 'src/Application/IPasswordEncoder';

import {PasswordNotMatchException} from 'src/Domain/HumanResource/User/Exception/PasswordNotMatchException';

import {UserNotFoundException} from 'src/Domain/HumanResource/User/Exception/UserNotFoundException';

@QueryHandler(LoginQuery)

export class LoginQueryHandler {

  constructor(

    @Inject('IUserRepository')

    private readonly userRepository: IUserRepository,

    @Inject('IPasswordEncoder')

    private readonly passwordEncoder: IPasswordEncoder

  ) {}

  public async execute(query: LoginQuery): Promise<AuthenticatedView> {

    const {password} = query;

    const email = query.email.toLowerCase();

    const user = await this.userRepository.findOneByEmail(email);

    if (!user) {

      throw new UserNotFoundException();

    }

    if (

      false ===

      (await this.passwordEncoder.compare(user.getPassword(), password))

    ) {

      throw new PasswordNotMatchException();

    }

    return new AuthenticatedView(

      user.getId(),

      user.getFirstName(),

      user.getLastName(),

      user.getEmail(),

      user.getRole(),

      user.getApiToken()

    );

  }

}