/**
 * 屏幕方向管理工具类
 * 用于检测和处理屏幕方向变化
 */
export default {
  /**
   * 监听屏幕方向变化
   * @param {Function} callback 方向变化时的回调函数
   * @returns {Object} 包含remove方法的对象，用于移除监听
   */
  onOrientationChange(callback) {
    // 监听window的orientationchange事件
    const handleOrientationChange = () => {
      const orientation = window.orientation || 0;
      const isLandscape = Math.abs(orientation) === 90;
      const isPortrait = orientation === 0 || orientation === 180;
      
      callback({
        orientation,
        isLandscape,
        isPortrait
      });
    };
    
    window.addEventListener('orientationchange', handleOrientationChange);
    
    // 立即执行一次回调，获取当前方向
    handleOrientationChange();
    
    // 返回移除监听的方法
    return {
      remove: () => {
        window.removeEventListener('orientationchange', handleOrientationChange);
      }
    };
  },
  
  /**
   * 获取当前屏幕方向
   * @returns {Object} 包含orientation、isLandscape、isPortrait属性的对象
   */
  getCurrentOrientation() {
    const orientation = window.orientation || 0;
    return {
      orientation,
      isLandscape: Math.abs(orientation) === 90,
      isPortrait: orientation === 0 || orientation === 180
    };
  },
  
  /**
   * 请求全屏显示
   * 对于视频播放等场景很有用
   * @param {HTMLElement} element 要全屏显示的元素，默认为document.documentElement
   */
  requestFullscreen(element = document.documentElement) {
    if (element.requestFullscreen) {
      element.requestFullscreen();
    } else if (element.mozRequestFullScreen) {
      element.mozRequestFullScreen();
    } else if (element.webkitRequestFullscreen) {
      element.webkitRequestFullscreen();
    } else if (element.msRequestFullscreen) {
      element.msRequestFullscreen();
    }
  },
  
  /**
   * 退出全屏
   */
  exitFullscreen() {
    if (document.exitFullscreen) {
      document.exitFullscreen();
    } else if (document.mozCancelFullScreen) {
      document.mozCancelFullScreen();
    } else if (document.webkitExitFullscreen) {
      document.webkitExitFullscreen();
    } else if (document.msExitFullscreen) {
      document.msExitFullscreen();
    }
  }
};