import root from "$lib/Utility/root";
import { decodeAuthCookieOrNull } from "$lib/Effect/authCookie";
import type { Handle, RequestEvent } from "@sveltejs/kit";

const redirectWithParameters = (
	event: RequestEvent<Partial<Record<string, string>>, string | null>,
	path: string,
) => {
	return Response.redirect(
		root(
			`${path}${
				event.url.searchParams.toString().length > 0
					? `?${event.url.searchParams.toString()}`
					: ""
			}`,
		),
		307,
	);
};

export const handle: Handle = async ({ event, resolve }) => {
	const { cookies } = event;
	const user = cookies.get("user");

	if (user) {
		const decodedUser = decodeAuthCookieOrNull(user);

		if (decodedUser) event.locals.user = decodedUser;
		else cookies.delete("user", { path: "/" });
	}

	switch (event.url.pathname) {
		case "/birthdays":
			return redirectWithParameters(event, "/tools/birthdays");
		case "/wrapped":
			return redirectWithParameters(event, "/tools/wrapped");
	}

	return await resolve(event);
};