middleware.ts

import { NextRequest, NextResponse } from 'next/server';

import { getToken } from 'next-auth/jwt';

export const middleware = async (request: NextRequest) => {
	const publicRoutes = [/\/invoices\/view/];
	const token = await getToken({ req: request });
	const isRootRoute = request.nextUrl.pathname === '/';
	const excludePattern =
		/^\/(?!api|auth|api\/register|_next\/static|_next\/image|images|assets|favicon.ico|invoices\/view\/[a-zA-Z0-9]{12}).*/;

	if (!excludePattern.test(request.nextUrl.pathname) || isRootRoute) {
		return NextResponse.next();
	}

	if (publicRoutes.some(pattern => pattern.test(request.nextUrl.pathname))) {
		return NextResponse.next();
	}

	if (!token) {
		const url = request.nextUrl.clone();
		url.searchParams.set('callbackUrl', url.pathname);
		url.pathname = '/auth/sign-in';
		return NextResponse.redirect(url);
	}

	return NextResponse.next();
};