import type { Handle, HandleServerError } from '@sveltejs/kit';
import { validateSession, setSessionCookie, deleteSessionCookie } from '$lib/server/auth/index.js';

export const handleError: HandleServerError = async ({ error }) => {
	const message = error instanceof Error ? error.message : 'Unknown error';

	// Body size limit exceeded
	if (message.includes('exceeds limit')) {
		return {
			message: 'File too large. Maximum upload size is 50MB.'
		};
	}

	console.error('Unhandled error:', error);
	return { message: 'An unexpected error occurred.' };
};

export const handle: Handle = async ({ event, resolve }) => {
	const token = event.cookies.get('session');

	if (token) {
		const { session, user } = await validateSession(token);

		if (session && user) {
			event.locals.user = user;
			event.locals.session = session;

			// Refresh cookie if session was extended
			if (session.fresh) {
				setSessionCookie(event, token, session.expiresAt);
			}
		} else {
			event.locals.user = null;
			event.locals.session = null;
			deleteSessionCookie(event);
		}
	} else {
		event.locals.user = null;
		event.locals.session = null;
	}

	return resolve(event);
};