export const CHECKOUT_DURATION_MS = 60 * 60 * 1000;

export function checkoutNow(): number {
  return Date.now();
}

export function checkoutExpiresAt(createdAt: Date): number {
  return createdAt.getTime() + CHECKOUT_DURATION_MS;
}

export function checkoutExpired(createdAt: Date, now = Date.now()): boolean {
  return now >= checkoutExpiresAt(createdAt);
}