//==本JS是加载Lodop插件及CLodop服务的综合示例，可直接使用，建议看懂后融进自己页面程序==
import config from "@/utils/config";
var CreatedOKLodopObject, CLodopIsLocal, CLodopJsState;

//==判断是否需要CLodop(那些不支持插件的浏览器):==
export function needCLodop() {
  try {
    var ua = navigator.userAgent;
    if (ua.match(/Windows\sPhone/i)) return true;
    if (ua.match(/iPhone|iPod|iPad/i)) return true;
    if (ua.match(/Android/i)) return true;
    if (ua.match(/Edge\D?\d+/i)) return true;

    var verTrident = ua.match(/Trident\D?\d+/i);
    var verIE = ua.match(/MSIE\D?\d+/i);
    var verOPR = ua.match(/OPR\D?\d+/i);
    var verFF = ua.match(/Firefox\D?\d+/i);
    var x64 = ua.match(/x64/i);
    if (!verTrident && !verIE && x64) return true;
    else if (verFF) {
      verFF = verFF[0].match(/\d+/);
      if (verFF[0] >= 41 || x64) return true;
    } else if (verOPR) {
      verOPR = verOPR[0].match(/\d+/);
      if (verOPR[0] >= 32) return true;
    } else if (!verTrident && !verIE) {
      var verChrome = ua.match(/Chrome\D?\d+/i);
      if (verChrome) {
        verChrome = verChrome[0].match(/\d+/);
        if (verChrome[0] >= 41) return true;
      }
    }
    return false;
  } catch (err) {
    return true;
  }
}

//==加载引用CLodop的主JS,用双端口8000和18000(以防其中一个被占):==
export function loadCLodop() {
  if (CLodopJsState == "loading" || CLodopJsState == "complete") return;
  CLodopJsState = "loading";
  var head =
    document.head ||
    document.getElementsByTagName("head")[0] ||
    document.documentElement;
  var JS1 = document.createElement("script");
  var JS2 = document.createElement("script");
  JS1.src = "http://localhost:8000/CLodopfuncs.js?priority=1";
  JS2.src = "http://localhost:18000/CLodopfuncs.js";
  JS1.onload = JS2.onload = function () {
    CLodopJsState = "complete";
  };
  JS1.onerror = JS2.onerror = function () {
    CLodopJsState = "complete";
  };
  head.insertBefore(JS1, head.firstChild);
  head.insertBefore(JS2, head.firstChild);
  CLodopIsLocal = !!(JS1.src + JS2.src).match(/\/\/localho|\/\/127.0.0./i);
}

if (needCLodop()) {
  loadCLodop();
} //加载

//==获取LODOP对象主过程,判断是否安装、需否升级:==
export function getLodop(oOBJECT, oEMBED) {
  var strHtmInstall =
    "<br><font color='#FF00FF'><a href='" +
    `${config.BASE_API}/template/install_lodop32.exe` +
    "' target='_self'>打印控件未安装!点击这里执行安装,安装后请刷新页面或重新进入。</a></font>";
  var strHtmUpdate =
    "<br><font color='#FF00FF'><a href='" +
    `${config.BASE_API}/template/install_lodop32.exe` +
    "' target='_self'>打印控件需要升级!点击这里执行升级,升级后请重新进入。</a></font>";
  var strHtm64_Install =
    "<br><font color='#FF00FF'><a href='" +
    `${config.BASE_API}/template/install_lodop64.exe` +
    "' target='_self'>打印控件未安装!点击这里执行安装,安装后请刷新页面或重新进入。</a></font>";
  var strHtm64_Update =
    "<br><font color='#FF00FF'><a href='" +
    `${config.BASE_API}/template/install_lodop64.exe` +
    "' target='_self'>打印控件需要升级!点击这里执行升级,升级后请重新进入。</a></font>";
  var strHtmFireFox =
    "<br><br><font color='#FF00FF'>（注意：如曾安装过Lodop旧版附件npActiveXPLugin,请在【工具】->【附加组件】->【扩展】中先卸它）</font>";
  var strHtmChrome =
    "<br><br><font color='#FF00FF'>(如果此前正常，仅因浏览器升级或重安装而出问题，需重新执行以上安装）</font>";
  var strCLodopInstall_1 =
    "<br><font color='#FF00FF'><a href='" +
    `${config.BASE_API}/template/CLodop_Setup_for_Win32NT.exe` +
    "' target='_self'>Web打印服务CLodop未安装启动，点击这里下载执行安装</a>";
  var strCLodopInstall_2 =
    "<br>（若此前已安装过，可<a href='CLodop.protocol:setup' target='_self'>点这里直接再次启动</a>）";
  var strCLodopInstall_3 = "，成功后请刷新本页面。</font>";
  var strCLodopUpdate =
    "<br><font color='#FF00FF'><a href='" +
    `${config.BASE_API}/template/CLodop_Setup_for_Win32NT.exe` +
    "' target='_self'>Web打印服务CLodop需升级!点击这里执行升级,升级后请刷新页面。</a></font>";
  var LODOP;
  try {
    var ua = navigator.userAgent;
    var isIE = !!ua.match(/MSIE/i) || !!ua.match(/Trident/i);
    if (needCLodop()) {
      try {
        // LODOP = getCLodop();
      } catch (err) {
        console.log(err);
      }
      if (!LODOP && CLodopJsState !== "complete") {
        if (CLodopJsState == "loading")
          alert("网页还没下载完毕，请稍等一下再操作.");
        else alert("没有加载CLodop的主js，请先调用loadCLodop过程.");
        return;
      }
      if (!LODOP) {
        document.body.innerHTML =
          strCLodopInstall_1 +
          (CLodopIsLocal ? strCLodopInstall_2 : "") +
          strCLodopInstall_3 +
          document.body.innerHTML;
        return;
      } else {
        // eslint-disable-next-line no-undef
        if (CLODOP.CVERSION < "4.1.0.4") {
          document.body.innerHTML = strCLodopUpdate + document.body.innerHTML;
        }
        if (oEMBED && oEMBED.parentNode) oEMBED.parentNode.removeChild(oEMBED); //清理旧版无效元素
        if (oOBJECT && oOBJECT.parentNode)
          oOBJECT.parentNode.removeChild(oOBJECT);
      }
    } else {
      var is64IE = isIE && !!ua.match(/x64/i);
      //==如果页面有Lodop就直接使用,否则新建:==
      if (oOBJECT || oEMBED) {
        if (isIE) LODOP = oOBJECT;
        else LODOP = oEMBED;
      } else if (!CreatedOKLodopObject) {
        LODOP = document.createElement("object");
        LODOP.setAttribute("width", 0);
        LODOP.setAttribute("height", 0);
        LODOP.setAttribute(
          "style",
          "position:absolute;left:0px;top:-100px;width:0px;height:0px;"
        );
        if (isIE)
          LODOP.setAttribute(
            "classid",
            "clsid:2105C259-1E0C-4534-8141-A753534CB4CA"
          );
        else LODOP.setAttribute("type", "application/x-print-lodop");
        document.documentElement.appendChild(LODOP);
        CreatedOKLodopObject = LODOP;
      } else LODOP = CreatedOKLodopObject;
      //==Lodop插件未安装时提示下载地址:==
      if (!LODOP || !LODOP.VERSION) {
        if (ua.indexOf("Chrome") >= 0)
          document.body.innerHTML = strHtmChrome + document.body.innerHTML;
        if (ua.indexOf("Firefox") >= 0)
          document.body.innerHTML = strHtmFireFox + document.body.innerHTML;
        document.body.innerHTML =
          (is64IE ? strHtm64_Install : strHtmInstall) + document.body.innerHTML;
        return LODOP;
      }
    }
    if (LODOP.VERSION < "6.2.2.6") {
      if (!needCLodop())
        document.body.innerHTML =
          (is64IE ? strHtm64_Update : strHtmUpdate) + document.body.innerHTML;
    }
    //===如下空白位置适合调用统一功能(如注册语句、语言选择等):==

    //=======================================================
    return LODOP;
  } catch (err) {
    alert("getLodop出错:" + err);
  }
}