function bin2hex(s) {
  var i,
    l,
    o = "",
    n;
  s += "";
  for (i = 0, l = s.length; i < l; i++) {
    n = s.charCodeAt(i).toString(16)
    o += n.length < 2 ? "0" + n : n;
  }
  return o;
}

function getCanvas() {
  var canvas = document.createElement("canvas");
  var ctx = canvas.getContext("2d");
  ctx.fillStyle = "#f60";
  ctx.fillRect(125, 1, 62, 20);
  var b64 = canvas.toDataURL().replace("data:image/png;base64,", "");
  var bin = atob(b64);
  var crc = bin2hex(bin.slice(-16, -12));
  return crc;
}

function getOsInfo() {
  var userAgent = navigator.userAgent.toLowerCase();
  var name = "Unknown";
  var version = "Unknown";
  if (userAgent.indexOf("win") > -1) {
    name = "Windows";
    if (userAgent.indexOf("windows nt 5.0") > -1) {
      version = "Windows 2000";
    } else if (
      userAgent.indexOf("windows nt 5.1") > -1 ||
      userAgent.indexOf("windows nt 5.2") > -1
    ) {
      version = "Windows XP";
    } else if (userAgent.indexOf("windows nt 6.0") > -1) {
      version = "Windows Vista";
    } else if (
      userAgent.indexOf("windows nt 6.1") > -1 ||
      userAgent.indexOf("windows 7") > -1
    ) {
      version = "Windows 7";
    } else if (
      userAgent.indexOf("windows nt 6.2") > -1 ||
      userAgent.indexOf("windows 8") > -1
    ) {
      version = "Windows 8";
    } else if (userAgent.indexOf("windows nt 6.3") > -1) {
      version = "Windows 8.1";
    } else if (
      userAgent.indexOf("windows nt 6.2") > -1 ||
      userAgent.indexOf("windows nt 10.0") > -1
    ) {
      version = "Windows 10";
    } else {
      version = "Unknown";
    }
  } else if (userAgent.indexOf("iphone") > -1) {
    name = "Iphone";
  } else if (userAgent.indexOf("mac") > -1) {
    name = "Mac";
  } else if (
    userAgent.indexOf("x11") > -1 ||
    userAgent.indexOf("unix") > -1 ||
    userAgent.indexOf("sunname") > -1 ||
    userAgent.indexOf("bsd") > -1
  ) {
    name = "Unix";
  } else if (userAgent.indexOf("linux") > -1) {
    if (userAgent.indexOf("android") > -1) {
      name = "Android"
    } else {
      name = "Linux";
    }
  } else {
    name = "Unknown";
  }
  var os = new Object();
  os.name = name;
  os.version = version;
  return os;
  //document.write("系统：" + os.name + "版本:" + os.name)
}
function getBrowerInfo() {
  var Browser =
    Browser ||
    (function (window) {
      var document = window.document,
        navigator = window.navigator,
        agent = navigator.userAgent.toLowerCase(),
        //IE8+支持.返回浏览器渲染当前文档所用的模式
        //IE6,IE7:undefined.IE8:8(兼容模式返回7).IE9:9(兼容模式返回7||8)
        //IE10:10(兼容模式7||8||9)
        IEMode = document.documentMode,
        //chorme
        chrome = window.chrome || false,
        System = {
          //user-agent
          agent: agent,
          //是否为IE
          isIE: /trident/.test(agent),
          //Gecko内核
          isGecko: agent.indexOf("gecko") > 0 && agent.indexOf("like gecko") < 0,
          //webkit内核
          isWebkit: agent.indexOf("webkit") > 0,
          //是否为标准模式
          isStrict: document.compatMode === "CSS1Compat",
          //是否支持subtitle
          supportSubTitle: function () {
            return "track" in document.createElement("track");
          },
          //是否支持scoped
          supportScope: function () {
            return "scoped" in document.createElement("style");
          },

          //获取IE的版本号
          ieVersion: function () {
            var rMsie = /(msie\s|trident.*rv:)([\w.]+)/;
            var ma = window.navigator.userAgent.toLowerCase()
            var match = rMsie.exec(ma);
            try {
              return match[2];
            } catch (e) {
              //									console.log("error");
              return IEMode;
            }
          },
          //Opera版本号
          operaVersion: function () {
            try {
              if (window.opera) {
                return agent.match(/opera.([\d.]+)/)[1];
              } else if (agent.indexOf("opr") > 0) {
                return agent.match(/opr\/([\d.]+)/)[1];
              }
            } catch (e) {
              return 0;
            }
          }
        };

      try {
        //浏览器类型(IE、Opera、Chrome、Safari、Firefox)
        System.type = System.isIE
          ? "IE"
          : window.opera || agent.indexOf("opr") > 0
            ? "Opera"
            : agent.indexOf("chrome") > 0
              ? "Chrome"
              : //safari也提供了专门的判定方式
              window.openDatabase
                ? "Safari"
                : agent.indexOf("firefox") > 0
                  ? "Firefox"
                  : "unknow";
        //版本号
        System.version = (System.type === "IE") ? System.ieVersion() :
          (System.type === "Firefox") ? agent.match(/firefox\/([\d.]+)/)[1] :
            (System.type === "Chrome") ? agent.match(/chrome\/([\d.]+)/)[1] :
              (System.type === "Opera") ? System.operaVersion() :
                (System.type === "Safari") ? agent.match(/version\/([\d.]+)/)[1] :
                  "0";

        //浏览器外壳
        System.shell = function () {

          if (agent.indexOf("edge") > 0) {
            System.version = agent.match(/edge\/([\d.]+)/)[1] || System.version;
            return "edge浏览器";
          }
          //遨游浏览器
          if (agent.indexOf("maxthon") > 0) {
            System.version = agent.match(/maxthon\/([\d.]+)/)[1] || System.version;
            return "傲游浏览器";
          }
          //QQ浏览器
          if (agent.indexOf("qqbrowser") > 0) {
            System.version = agent.match(/qqbrowser\/([\d.]+)/)[1] || System.version;
            return "QQ浏览器";
          }

          //搜狗浏览器
          if (agent.indexOf("se 2.x") > 0) {
            return '搜狗浏览器';
          }

          //Chrome:也可以使用window.chrome && window.chrome.webstore判断
          if (chrome && System.type !== "Opera") {
            var external = window.external,
              clientInfo = window.clientInformation,
              //客户端语言:zh-cn,zh.360下面会返回undefined
              clientLanguage = clientInfo.languages;

            //猎豹浏览器:或者agent.indexOf("lbbrowser")>0
            if (external && 'LiebaoGetVersion' in external) {
              return '猎豹浏览器';
            }
            //百度浏览器
            if (agent.indexOf("bidubrowser") > 0) {
              System.version = agent.match(/bidubrowser\/([\d.]+)/)[1] ||
                agent.match(/chrome\/([\d.]+)/)[1];
              return "百度浏览器";
            }
            //360极速浏览器和360安全浏览器
            if (System.supportSubTitle() && typeof clientLanguage === "undefined") {
              //object.key()返回一个数组.包含可枚举属性和方法名称
              var storeKeyLen = Object.keys(chrome.webstore).length,
                v8Locale = "v8Locale" in window;
              return storeKeyLen > 1 ? '360极速浏览器' : '360安全浏览器';
            }
            return "Chrome";
          }
          return System.type;
        };

        //浏览器名称(如果是壳浏览器,则返回壳名称)
        System.name = System.shell();
        //对版本号进行过滤过处理
        //	System.version = System.versionFilter(System.version);

      } catch (e) {
        //						console.log(e.message);
      }
      return {
        client: System
      };
    })(window);
  if (Browser.client.name == undefined || Browser.client.name == "") {
    Browser.client.name = "Unknown";
    Browser.client.version = "Unknown";
  } else if (Browser.client.version == undefined) {
    Browser.client.version = "Unknown";
  }
  //				document.write(Browser.client.name + " " + Browser.client.version);
  return Browser;
}


function GetCommonPms() {
  const v = "1.0.1";
  const did = getCanvas();
  const dh = getOsInfo().version;
  const BrowerInfo = getBrowerInfo();
  const db = BrowerInfo.client.name;
  const dv = BrowerInfo.client.version;
  const t = new Date().getTime();
  const pms = `v=${v}&&did=${did}&&dh=${dh}&&db=${db}&&dv=${dv}&&dm=&&lat=&&lng=&&t=${t}`;
  return pms;
}

export {
  GetCommonPms
};