@earnaha/auth0-action-helper/src/pre.user.registration.js

AHA auth0 action helper

/* eslint-disable no-unused-vars */
const BaseHelper = require('./base.js');

class PreUserRegistrationHelper extends BaseHelper {
	/**
	 * https://auth0.com/docs/customize/actions/flows-and-triggers/pre-user-registration-flow
	 * Handler that will be called during the execution of a PreUserRegistration flow.
	 * @param {Event} event - Details about the context and user that is attempting to register.
	 * @param {PreUserRegistrationAPI} api - Interface whose methods can be used to change the behavior of the signup.
	 */
	async exec(event, api) {
		super.LOGGER.setMeta({
			email: event?.user?.email,
			connection: event?.connection?.name,
		});

		// TIP: in this action, user hasn't complete created
		// i.e. event.user doesn't have user_id
		const connName = event?.connection?.name;
		if (connName && connName === super.DEFAULT_CONN) {
			const userToken = await super.getUserToken();
			const existingUsers = await super.formUsersHavingTheSameEmail(
				event,
				userToken,
			);
			super.LOG.debug(
				{ existingUsers },
				`PreUserRegistration.exec | existing users`,
			);
			// 3rd-party-auth users having the same email already exist!!
			if (existingUsers.otherAuthUsers.length > 0) {
				api.access.deny('Account already in use.');
			}
		}
	}
}

module.exports = PreUserRegistrationHelper;