import { Unauthorized } from 'http-errors';<% if (i18n) { %>
import { i18n as I18n } from 'i18next';<% } %>
import { <% if (i18n) { %>Inject, <% } %>Service } from 'typedi';
import { UserModel } from '../models';

@Service()
export default class AuthService {<% if (i18n) { %>
  @Inject('i18n')
  i18n!: I18n;
<% } %>
  /**
   * Authenticates a user and returns a JWT token.
   */
  async login(email: string, password: string): Promise<string> {
    // Check if a user with this email exists
    const user = await UserModel.findOne({
      attributes: {
        include: ['password'],
      },
      where: { email },
    });

    if (!user) {
      throw new Unauthorized(<% if (i18n) { %>this.i18n.t('errors:invalidCredentials')<% } else { %>'Invalid credentials.'<% } %>);
    }

    // Check if passwords match
    const passwordMatch = await user.comparePassword(password);

    if (!passwordMatch) {
      throw new Unauthorized(<% if (i18n) { %>this.i18n.t('errors:invalidCredentials')<% } else { %>'Invalid credentials.'<% } %>);
    }

    // Generate JWT
    const token = await user.generateJWT();

    return token;
  }
}