// 检查浏览器是否支持全屏 API
function isFullscreenSupported() {
  return (
    document.fullscreenEnabled ||
    document.webkitFullscreenEnabled ||
    document.mozFullScreenEnabled ||
    document.msFullscreenEnabled
  );
}

// 进入全屏模式
function requestFullscreen(element) {
  if (element.requestFullscreen) {
    element.requestFullscreen();
  } else if (element.webkitRequestFullscreen) {
    element.webkitRequestFullscreen();
  } else if (element.mozRequestFullScreen) {
    element.mozRequestFullScreen();
  } else if (element.msRequestFullscreen) {
    element.msRequestFullscreen();
  }
}

// 退出全屏模式
function exitFullscreen() {
  if (document.exitFullscreen) {
    document.exitFullscreen();
  } else if (document.webkitExitFullscreen) {
    document.webkitExitFullscreen();
  } else if (document.mozCancelFullScreen) {
    document.mozCancelFullScreen();
  } else if (document.msExitFullscreen) {
    document.msExitFullscreen();
  }
}

// 检查当前是否处于全屏状态
function isFullscreen() {
  return (
    document.fullscreenElement ||
    document.webkitFullscreenElement ||
    document.mozFullScreenElement ||
    document.msFullscreenElement
  );
}


export {
  isFullscreenSupported,
  requestFullscreen,
  exitFullscreen,
  isFullscreen,
};