/** 与 tzzx 页 VIEWPORT_HEIGHT_OFFSET 保持一致 */
const VIEWPORT_HEIGHT_OFFSET = 100;

export function getViewportIframeFallbackHeight() {
  return Math.max(window.innerHeight - VIEWPORT_HEIGHT_OFFSET, 480);
}

export function isAllowedIframeMessageOrigin(origin) {
  if (!origin) return false;
  if (origin === window.location.origin) return true;
  try {
    const host = window.location.hostname;
    if (host === 'localhost' || host === '127.0.0.1') return true;
  } catch (e) {
    return false;
  }
  return false;
}