import { parse } from "macaddr";
import arp from "@network-utils/arp-lookup";
import find from "local-devices";

export const resolveMacToIp = async (mac: string): Promise<string | null> => {
  const mac2 = tidyMac(mac);
  let trial = 0;
  let ip =
    (await arp.toIP(mac2)) ??
    (await find()).find((devices) => devices.mac === mac2)?.ip;

  while (trial < 5 && !ip) {
    trial++;
    ip =
      (await arp.toIP(mac2)) ??
      (await find()).find((devices) => devices.mac === mac2)?.ip;
  }

  return ip;
};

const tidyMac = (mac: string): string => parse(mac).toString();