import type { Handle } from '@sveltejs/kit';
import { redirect } from '@sveltejs/kit';
import { apiClient } from '$lib/server/api';

const PUBLIC_ROUTES = ['/login', '/register', '/invite'];

const STATIC_PREFIXES = ['/_app/', '/favicon'];

function isPublicRoute(pathname: string): boolean {
	if (STATIC_PREFIXES.some((prefix) => pathname.startsWith(prefix))) {
		return true;
	}
	return PUBLIC_ROUTES.some((route) => pathname === route || pathname.startsWith(route + '/'));
}

function loginRedirect(pathname: string): never {
	const target = '/login?redirect=' + encodeURIComponent(pathname);
	redirect(302, target);
}

export const handle: Handle = async ({ event, resolve }) => {
	if (isPublicRoute(event.url.pathname)) {
		return resolve(event);
	}

	const sessionCookie = event.cookies.get('session');
	if (!sessionCookie) {
		loginRedirect(event.url.pathname);
	}

	const api = apiClient(event.fetch);
	const { data, error } = await api.GET('/v1/auth/me');

	if (error || !data?.data) {
		loginRedirect(event.url.pathname);
	}

	const user = data.data;
	event.locals.benutzer = {
		id: user.id!,
		name: user.displayName!,
		rolle: user.householdRole as 'planer' | 'mitglied'
	};
	event.locals.haushalt = {
		id: user.householdId!,
		name: user.householdName!
	};

	return resolve(event);
};