'use strict';

const fs = require('fs');
const moment = require('moment');

const knex = require('../knex');

async function save() {
	const filename = `alerts-${moment().format('YYYY-MM-DD_hh_mm')}.json`;

	const alerts = await knex('alerts')
		.select([
			'alerts.*',
			'users.username',
			'actors.slug as actor_slug',
			'actors_entities.slug as actor_entity_slug',
			'actors_entities.type as actor_entity_type',
			'entities.slug as entity_slug',
			'entities.type as entity_type',
			'stashes.slug as stash_slug',
			'tags.slug as tag_slug',
		])
		.leftJoin('users', 'users.id', 'alerts.user_id')
		.leftJoin('alerts_actors', 'alerts_actors.alert_id', 'alerts.id')
		.leftJoin('alerts_entities', 'alerts_entities.alert_id', 'alerts.id')
		.leftJoin('alerts_stashes', 'alerts_stashes.alert_id', 'alerts.id')
		.leftJoin('alerts_tags', 'alerts_tags.alert_id', 'alerts.id')
		.leftJoin('actors', 'actors.id', 'alerts_actors.actor_id')
		.leftJoin('entities', 'entities.id', 'alerts_entities.entity_id')
		.leftJoin('tags', 'tags.id', 'alerts_tags.tag_id')
		.leftJoin('stashes', 'stashes.id', 'alerts_stashes.stash_id')
		.leftJoin('entities as actors_entities', 'actors_entities.id', 'actors.entity_id');

	let savedAlerts = 0;

	await alerts.reduce(async (chain, alert) => {
		await chain;

		const curatedAlert = JSON.stringify({
			username: alert.username,
			notify: alert.notify,
			email: alert.email,
			createdAt: alert.created_at,
			actorSlug: alert.actor_slug,
			actorEntitySlug: alert.actor_entity_slug,
			actorEntityType: alert.actor_entity_type,
			entitySlug: alert.entity_slug,
			entityType: alert.entity_type,
			stashSlug: alert.stash_slug,
			tagSlug: alert.tag_slug,
		});

		await fs.promises.appendFile(filename, `${curatedAlert}\n`);

		console.log(`Saved ${alert.username} alert`);

		savedAlerts += 1;
	}, Promise.resolve());

	console.log(`Saved ${savedAlerts} alerts to ${filename}`);

	process.exit();
}

save();