import { stringify } from '@brillout/json-serializer/stringify'; /* eslint-disable-line import/extensions */

import { fetchScenes } from '../scenes.js';
import { parseActorIdentifier } from '../query.js';
import redis from '../redis.js';

async function getIdsBySlug(slugs, domain) {
	const ids = await Promise.all(slugs.map(async (slug) => {
		if (!slug) {
			return null;
		}

		if (Number(slug)) {
			return Number(slug); // already an ID or missing
		}

		const id = await redis.hGet(`traxxx:${domain}:id_by_slug`, slug);

		return Number(id);
	}));

	return ids.filter(Boolean);
}

export async function curateScenesQuery(query) {
	return {
		scope: query.scope || 'latest',
		actorIds: [query.actorId, ...(query.actors?.split(',') || []).map((identifier) => parseActorIdentifier(identifier)?.id)].filter(Boolean),
		tagIds: await getIdsBySlug([query.tagSlug, ...(query.tags?.split(',') || [])], 'tags'),
		entityId: query.e ? await getIdsBySlug([query.e], 'entities').then(([id]) => id) : query.entityId,
	};
}

export async function fetchScenesApi(req, res) {
	const {
		scenes,
		aggActors,
		aggTags,
		aggChannels,
		limit,
		total,
	} = await fetchScenes(await curateScenesQuery(req.query), {
		page: Number(req.query.page) || 1,
		limit: Number(req.query.limit) || 30,
	});

	res.send(stringify({
		scenes,
		aggActors,
		aggTags,
		aggChannels,
		limit,
		total,
	}));
}