export const SESSION_IDLE_SECONDS = 30 * 24 * 60 * 60;
export const SESSION_EXPIRY_HEADER = "X-Foundry-Session-Expires-In";
export function sessionMaxAge(value: unknown, fallback = SESSION_IDLE_SECONDS) {
  const seconds = typeof value === "number" ? value : typeof value === "string" && /^\d+$/.test(value) ? Number(value) : NaN;
  return Number.isSafeInteger(seconds) && seconds >= 0 ? Math.min(seconds, SESSION_IDLE_SECONDS) : fallback;
}
export function sessionCookie(value: string, maxAge: number, secure: boolean) {
  return `foundry_session=${encodeURIComponent(value)}; HttpOnly; SameSite=Lax; Path=/; Max-Age=${sessionMaxAge(maxAge)}${secure ? "; Secure" : ""}`;
}