'use strict';

const knex = require('./knex');
const { HttpError } = require('./errors');

async function addAlert(alert, sessionUser) {
	if (!sessionUser) {
		throw new HttpError('You are not authenthicated', 401);
	}

	if (!alert.actors?.length > 0 && !alert.tags?.length > 0 && !alert.entity) {
		throw new HttpError('Alert must contain at least one actor, tag or entity', 400);
	}

	const [alertId] = await knex('alerts')
		.insert({
			user_id: sessionUser.id,
			notify: alert.notify,
			email: alert.email,
		})
		.returning('id');

	await Promise.all([
		alert.actors?.length > 0 && knex('alerts_actors')
			.insert(alert.actors.map(actorId => ({
				alert_id: alertId,
				actor_id: actorId,
			}))),
		alert.tags?.length > 0 && knex('alerts_tags')
			.insert(alert.tags.map(tagId => ({
				alert_id: alertId,
				tag_id: tagId,
			}))),
		alert.stashes?.length > 0 && knex('alerts_stashes')
			.insert(alert.stashes.map(stashId => ({
				alert_id: alertId,
				stash_id: stashId,
			}))),
		alert.entity && knex('alerts_entities').insert({
			alert_id: alertId,
			entity_id: alert.entity,
		}),
	]);

	return alertId;
}

async function removeAlert(alertId) {
	await knex('alerts').where('id', alertId).delete();
}

module.exports = {
	addAlert,
	removeAlert,
};