const RUNTIME_ROLES = new Set(['stable', 'candidate']);

export function resolvePortalRuntimeRole(env = process.env) {
  const configured = String(env.MEMIND_RUNTIME_ROLE ?? '').trim().toLowerCase();
  return RUNTIME_ROLES.has(configured) ? configured : 'stable';
}

export function isPassiveCanaryRuntime(env = process.env) {
  return (
    resolvePortalRuntimeRole(env) === 'candidate'
    && String(env.MEMIND_CANARY_PASSIVE_RUNTIME ?? '1').trim() !== '0'
  );
}