import { BadRequest, NotFound } from 'http-errors';<% if (i18n) { %>
import { i18n as I18n } from 'i18next';<% } %>
import { <% if (i18n) { %>Inject, <% } %>Service } from 'typedi';
import { userDTO } from '../dto';
import { UserModel } from '../models';
import { CreateUserDTO, User } from '../types';

@Service()
export default class UserService {<% if (i18n) { %>
  @Inject('i18n')
  i18n!: I18n;
<% } %>
  /**
   * Returns the details of a user or throws a `NotFound` error if not found.
   */
  async getUserById(userId: string): Promise<User> {
    const user = await UserModel.findByPk(userId);

    if (!user) {
      throw new NotFound(<% if (i18n) { %>this.i18n.t('errors:userNotFound')<% } else { %>'User not found.'<% } %>);
    }

    return userDTO(user);
  }

  /**
   * Creates a new user or throws a `BadRequest` error if a user with the same email address already exists.
   */
  async createUser(userDetails: CreateUserDTO): Promise<User> {
    const existingUser = await UserModel.findOne({ where: { email: userDetails.email } });

    if (existingUser) {
      throw new BadRequest(<% if (i18n) { %>this.i18n.t('errors:emailAlreadyUsed')<% } else { %>'An account with this email address already exists.'<% } %>);
    }

    const user = await UserModel.create(userDetails);

    return userDTO(user);
  }
}