fairnesscoop / pictyschool

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

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

import { UserLoginQuery } from './UserLoginQuery';

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

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

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

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

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

@QueryHandler(UserLoginQuery)

export class UserLoginQueryHandler {

  constructor(

    @Inject('IUserRepository')

    private readonly userRepository: IUserRepository,

    @Inject('IPasswordEncoder')

    private readonly passwordEncoder: IPasswordEncoder

  ) {}

  public async execute(query: UserLoginQuery): Promise<UserView> {

    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(), query.password))

    ) {

      throw new PasswordNotMatchException();

    }

    return new UserView(

      user.getId(),

      user.getFirstName(),

      user.getLastName(),

      user.getEmail(),

      user.getRole(),

      user.getApiToken()

    );

  }

}