const SESSION_COOKIE = 'nxtgauge_admin_session';
const SESSION_VALUE = 'internal_management';
const SESSION_TTL_SECONDS = 60 * 60 * 12;

export function hasAdminSession(): boolean {
  if (typeof document === 'undefined') return false;
  // Check cookie exists
  const hasCookie = document.cookie.split(';').some((entry) => entry.trim() === `${SESSION_COOKIE}=${SESSION_VALUE}`);
  // Also check if sessionStorage has a valid token as fallback
  const hasToken = (() => {
    try {
      const token = sessionStorage.getItem('nxtgauge_admin_access_token');
      return Boolean(token && token.trim().length > 0);
    } catch {
      return false;
    }
  })();
  return hasCookie || hasToken;
}

export function setAdminSession(): void {
  if (typeof document === 'undefined') return;
  document.cookie = `${SESSION_COOKIE}=${SESSION_VALUE}; Path=/; Max-Age=${SESSION_TTL_SECONDS}; SameSite=Lax`;
}

export function clearAdminSession(): void {
  if (typeof document === 'undefined') return;
  document.cookie = `${SESSION_COOKIE}=; Path=/; Max-Age=0; SameSite=Lax`;
}