'use strict';

const config = require('config');

const logger = require('./logger')(__filename);
const argv = require('./argv');
const knex = require('./knex');
const whereOr = require('./utils/where-or');

function curateEntity(entity, includeParameters = false) {
	const curatedEntity = {
		id: entity.id,
		name: entity.name,
		url: entity.url,
		description: entity.description,
		slug: entity.slug,
		independent: !!entity.parameters && entity.parameters.independent,
		parameters: includeParameters ? entity.parameters : null,
		network: {
			id: entity.network_id,
			name: entity.network_name,
			description: entity.network_description,
			slug: entity.network_slug,
			url: entity.network_url,
			parameters: includeParameters ? entity.network_parameters : null,
		},
	};

	return curatedEntity;
}

async function curateEntities(entities, includeParameters) {
	return Promise.all(entities.map(async entity => curateEntity(entity, includeParameters)));
}

async function findSiteByUrl(url) {
	const { origin, hostname, pathname } = new URL(url);
	// const domain = hostname.replace(/www.|tour./, '');
	const dirUrl = `${origin}${pathname.split('/').slice(0, 2).join('/')}`; // allow for sites on URI directory

	const site = await knex('sites')
		.leftJoin('networks', 'sites.network_id', 'networks.id')
		.select(
			'sites.*',
			'networks.name as network_name', 'networks.slug as network_slug', 'networks.url as network_url', 'networks.description as network_description', 'networks.parameters as network_parameters',
		)
		.where('sites.url', url)
		.orWhere('sites.url', origin)
		.orWhere('sites.url', origin.replace(/www\.|tour\./, ''))
		.orWhere('sites.url', `https://www.${hostname}`)
		.orWhere('sites.url', `http://www.${hostname}`)
		.orWhere('sites.url', dirUrl)
	// .orWhere('sites.url', 'like', `%${domain}`)
		.first();

	if (site) {
		const curatedSite = curateSite(site, true, false);

		return curatedSite;
	}

	return null;
}

async function fetchEntitiesFromArgv() {
	const rawEntities = await knex.raw(`
		WITH RECURSIVE temp AS (
			SELECT id, parent_id, name, slug, type FROM entities WHERE slug IN (?)
			UNION
				SELECT entities.id, entities.parent_id, entities.name, entities.slug, entities.type FROM entities
				INNER JOIN temp ON temp.id = entities.parent_id
		) SELECT * FROM temp;
	`, argv.sites || argv.networks || argv.entities);

	console.log(rawEntities.rows);

	const curatedEntities = await curateEntities(rawEntities.rows, true);
	logger.info(`Found ${curatedEntities.length} entities in database`);

	console.log(curatedEntities);

	return curatedEntities;
}

async function fetchEntitiesFromConfig() {
	const rawSites = await knex('entities')
		.select('entities.*')
		.leftJoin('entities as entities_parents', 'entities_parents.id', 'entities.id')
		.where((builder) => {
			if (config.include) {
				builder.whereIn('entities.slug', config.include);
			}
		})
		.whereNot((builder) => {
			builder.whereIn('entities.slug', config.exclude || []);
		});

	const curatedSites = await curateSites(rawSites, true);
	logger.info(`Found ${curatedSites.length} sites in database`);

	return curatedSites;
}

async function fetchIncludedEntities() {
	if (argv.networks || argv.sites) {
		return fetchEntitiesFromArgv();
	}

	return fetchEntitiesFromConfig();
}

async function fetchSites(queryObject) {
	const sites = await knex('sites')
		.where(builder => whereOr(queryObject, 'sites', builder))
		.select(
			'sites.*',
			'networks.name as network_name', 'networks.slug as network_slug', 'networks.url as network_url', 'networks.description as network_description', 'networks.parameters as network_parameters',
		)
		.leftJoin('networks', 'sites.network_id', 'networks.id')
		.limit(100);

	return curateSites(sites);
}

async function fetchSitesFromReleases() {
	const sites = await knex('releases')
		.select('site_id', '')
		.leftJoin('sites', 'sites.id', 'releases.site_id')
		.groupBy('sites.id')
		.limit(100);

	return curateSites(sites);
}

module.exports = {
	curateEntity,
	curateEntities,
	fetchIncludedEntities,
	fetchSites,
	fetchEntitiesFromConfig,
	fetchEntitiesFromArgv,
	fetchSitesFromReleases,
	findSiteByUrl,
};