import qs from 'qs';
export function getMobileOperatingSystem() {
  // #ifdef H5
  const userAgent = navigator.userAgent || navigator.vendor || window.opera;

  // Windows Phone must come first because its UA also contains "Android"
  if (/windows phone/i.test(userAgent)) {
    return "Windows Phone";
  }

  if (/android/i.test(userAgent)) {
    return "Android";
  }

  // iOS detection from: http://stackoverflow.com/a/9039885/177710
  if (/iPad|iPhone|iPod/.test(userAgent) && !window.MSStream) {
    return "iOS";
  }

  return "unknown";
  // #endif

  // #ifndef H5
  return "unknown";
  // #endif
}


export function getQueryParam() {
  // let query: Record<string, string> = {};
  let query = {};
  query = location.search
    .slice(1)
    .split('&')
    .map((p) => p.split('='))
    // .reduce((obj: Record<string, string>, pair) => {
    .reduce((obj, pair) => {
      const [key, value] = pair.map(decodeURIComponent);
      obj[key] = value;
      return obj;
    }, {});
  return query;
}

// 
export function isInWeixinH5() {
  // TODO: 发布前取消注释
  return navigator.userAgent.toLowerCase().indexOf("micromessenger") !== -1;
  // return true;
}


// 判断当前运行平台
export function getPlatform() {
  const userAgent = navigator.userAgent.toLowerCase()
  // 微信小程序
  if (/miniprogram/g.test(userAgent)) {
    return "miniprogram"
  }
  // 微信公众号
  if (/micromessenger/g.test(userAgent)) {
    return "micromessenger"
  }
  // TODO: 发布前取消注释
  return 'browser'
}

export function getUrlParams(url = window.location.href) {
const str = `${url}`.split('?')[1]
  if(!str) return {}
  return qs.parse(str);
}