import { fail, redirect } from '@sveltejs/kit';
import { redeemOtp } from '$lib/server/member-otp';
import { slugify, handle } from '@shared/slugify';
import { setSessionCookie, clearLegacyCookies } from '$lib/server/session';

export const actions = {
	default: async (event) => {
		const fd = await event.request.formData();
		const famName = (fd.get('family') || '').toString().trim();
		const name = (fd.get('name') || '').toString().trim();
		const otp = (fd.get('otp') || '').toString().trim();

		if (!famName) return fail(400, { error: 'Enter your family name.', famName, name, otp });
		if (!name) return fail(400, { error: 'Enter your name.', famName, name, otp });
		if (!otp) return fail(400, { error: 'Enter the code shown by your parent.', famName, name, otp });

		const famSlug = slugify(famName);
		try {
			const token = await redeemOtp({ famSlug, username: name, otp });
			clearLegacyCookies(event.cookies);
			setSessionCookie(event.cookies, token);
		} catch (e) {
			return fail(400, {
				error: e instanceof Error ? e.message : 'Join failed',
				famName,
				name,
				otp
			});
		}

		const handleName = handle(name);
		throw redirect(303, `/${famSlug}/${encodeURIComponent(handleName)}`);
	}
};