export default function({ req }, inject) {
  console.log("devicetype...............");
  let deviceType = {};
  deviceType.ios = false;
  deviceType.android = false;
  deviceType.pc = false;
  deviceType.ios = false;
  deviceType.wx = false;
  deviceType.app = false;
  deviceType.spider = false;

  let cookie = "",
    ua = "";

  /** 通过UA判断设备类型 **/
  if (req && req.headers) {
    ua = (req && req.headers && req.headers["user-agent"]) || "";
  } else if (window && window.navigator) {
    ua = window.navigator.userAgent;
  }
  if (/(iPhone|iPad|iPod|iOS)/i.test(ua)) {
    deviceType.ios = true;
  } else if (/(Android)/i.test(ua)) {
    deviceType.android = true;
  } else {
    deviceType.pc = true;
  }

  /** 通过cookie 判断是不是APP **/
  if (req && req.headers) {
    cookie = req.headers.cookie || "";
  } else if (document) {
    cookie = document.cookie;
  }

  deviceType.app = judgeHasX_APP(cookie);

  /** 判断是不是 微信 **/
  if (/(MicroMessenger)/i.test(ua)) {
    deviceType.wx = true;
  }

  /**  判断是不是 蜘蛛 **/
  if (/(spider)/i.test(ua)) {
    deviceType.spider = true;
  }

  deviceType.isMobile = function() {
    return deviceType.ios || deviceType.android;
  };

  deviceType.isPC = function() {
    return deviceType.pc;
  };

  deviceType.isWx = function() {
    return deviceType.wx;
  };

  function judgeHasX_APP(cookiedata) {
    var cookies = cookiedata ? cookiedata.split("; ") : [];
    var i = 0;
    for (; i < cookies.length; i++) {
      var parts = cookies[i].split("=");
      var name = parts[0].replace(/(%[0-9A-Z]{2})+/g, decodeURIComponent);
      if (name === "x_app") {
        return true;
      }
    }
    return false;
  }
  inject && inject("deviceType", deviceType);
  return deviceType;
}