// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
import type {NextApiRequest, NextApiResponse} from "next";
import {app} from "@/firebase";
import {getFirestore, doc, getDoc, deleteDoc, setDoc} from "firebase/firestore";
import {withIronSessionApiRoute} from "iron-session/next";
import {sessionOptions} from "@/lib/session";
import {PERMISSIONS} from "@/constants/userPermissions";

const db = getFirestore(app);

export default withIronSessionApiRoute(handler, sessionOptions);

async function handler(req: NextApiRequest, res: NextApiResponse) {
	if (req.method === "GET") return get(req, res);
	if (req.method === "DELETE") return del(req, res);
	if (req.method === "PATCH") return patch(req, res);
}

async function get(req: NextApiRequest, res: NextApiResponse) {
	if (!req.session.user) {
		res.status(401).json({ok: false});
		return;
	}

	const {id} = req.query as {id: string};

	const docRef = doc(db, "packages", id);
	const docSnap = await getDoc(docRef);

	if (docSnap.exists()) {
		res.status(200).json({
			id: docSnap.id,
			...docSnap.data(),
			module,
		});
	} else {
		res.status(404).json(undefined);
	}
}

async function patch(req: NextApiRequest, res: NextApiResponse) {
	if (!req.session.user) {
		res.status(401).json({ok: false});
		return;
	}

	const {id} = req.query as {id: string};

	const docRef = doc(db, "packages", id);
	const docSnap = await getDoc(docRef);

	if (docSnap.exists()) {
		if (!["developer", "admin"].includes(req.session.user.type)) {
			res.status(403).json({ok: false});
			return;
		}

		await setDoc(docRef, req.body, {merge: true});

		res.status(200).json({ok: true});
	} else {
		res.status(404).json({ok: false});
	}
}

async function del(req: NextApiRequest, res: NextApiResponse) {
	if (!req.session.user) {
		res.status(401).json({ok: false});
		return;
	}

	const {id} = req.query as {id: string};

	const docRef = doc(db, "packages", id);
	const docSnap = await getDoc(docRef);

	if (docSnap.exists()) {
		if (!["developer", "admin"].includes(req.session.user.type)) {
			res.status(403).json({ok: false});
			return;
		}

		await deleteDoc(docRef);

		res.status(200).json({ok: true});
	} else {
		res.status(404).json({ok: false});
	}
}