import { v4 as uuidv4 } from "uuid";
import { getCookie, removeCookie, setCookie } from "./cookie";

const DEVICE_ID_KEY = "x-device-id";
const COOKIE_DOMAIN = process.env.NEXT_PUBLIC_COOKIE_DOMAIN;

export function getOrCreateDeviceId(): string {
  const existing = getCookie(DEVICE_ID_KEY);
  if (existing) return existing;

  const id = uuidv4();
  const isHttps =
    typeof window !== "undefined" && window.location.protocol === "https:";
  setCookie(DEVICE_ID_KEY, id, {
    secure: isHttps,
    sameSite: "lax",
    domain: COOKIE_DOMAIN,
    path: "/",
    expires: 365,
  });

  return id;
}

export function clearDeviceId(): void {
  removeCookie(DEVICE_ID_KEY, { domain: COOKIE_DOMAIN, path: "/" });
}