var CreatedOKLodop7766 = null;

//= ===判断是否需要安装CLodop云打印服务器:====
const needCLodop = () => {
    try {
        var ua = navigator.userAgent;
        if (ua.match(/Windows\sPhone/i) != null) return true;
        if (ua.match(/iPhone|iPod/i) != null) return true;
        if (ua.match(/Android/i) != null) return true;
        if (ua.match(/Edge\D?\d+/i) != null) return true;
        if (ua.match(/QQBrowser/i) != null) return false;
        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 == null && verIE == null && x64 !== null) {
            return true;
        } else if (verFF !== null) {
            verFF = verFF[0].match(/\d+/);
            if (verFF[0] >= 42) return true;
        } else if (verOPR !== null) {
            verOPR = verOPR[0].match(/\d+/);
            if (verOPR[0] >= 32) return true;
        } else if (verTrident == null && verIE == null) {
            var verChrome = ua.match(/Chrome\D?\d+/i);
            if (verChrome !== null) {
                verChrome = verChrome[0].match(/\d+/);
                if (verChrome[0] >= 42) return true;
            }
        }
        return false;
    } catch (err) {
        return true;
    }
};

//= ===获取LODOP对象的主过程：====
const getLodop = (oOBJECT, oEMBED) => {
    var strHtmInstall = "<br><font color='#FF00FF'>打印控件未安装!点击这里<a href='install_lodop32.exe' target='_self'>执行安装</a>,安装后请刷新页面或重新进入。</font>";
    var strHtmUpdate = "<br><font color='#FF00FF'>打印控件需要升级!点击这里<a href='install_lodop32.exe' target='_self'>执行升级</a>,升级后请重新进入。</font>";
    var strHtm64Install = "<br><font color='#FF00FF'>打印控件未安装!点击这里<a href='install_lodop64.exe' target='_self'>执行安装</a>,安装后请刷新页面或重新进入。</font>";
    var strHtm64Update = "<br><font color='#FF00FF'>打印控件需要升级!点击这里<a href='install_lodop64.exe' target='_self'>执行升级</a>,升级后请重新进入。</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 = "<br><font color='#FF00FF'>CLodop云打印服务(localhost本地)未安装启动!点击这里<a href='CLodop_Setup_for_Win32NT.exe' target='_self'>执行安装</a>,安装后请刷新页面。</font>";
    var strCLodopUpdate = "<br><font color='#FF00FF'>CLodop云打印服务需升级!点击这里<a href='CLodop_Setup_for_Win32NT.exe' target='_self'>执行升级</a>,升级后请刷新页面。</font>";
    var LODOP;
    try {
        var isIE = navigator.userAgent.indexOf('MSIE') >= 0 || navigator.userAgent.indexOf('Trident') >= 0;
        if (needCLodop()) {
            try {
                LODOP = getCLodop();
            } catch (err) {}
            if (!LODOP && document.readyState !== 'complete') {
                alert('C-Lodop没准备好，请稍后再试！');
                return;
            }
            if (!LODOP) {
                if (isIE) document.write(strCLodopInstall);
                else {
                    document.documentElement.innerHTML = strCLodopInstall + document.documentElement.innerHTML;
                }
                return;
            } else {
                if (CLODOP.CVERSION < '2.0.6.8') {
                    if (isIE) document.write(strCLodopUpdate);
                    else {
                        document.documentElement.innerHTML = strCLodopUpdate + document.documentElement.innerHTML;
                    }
                }
                if (oEMBED && oEMBED.parentNode) oEMBED.parentNode.removeChild(oEMBED);
                if (oOBJECT && oOBJECT.parentNode) oOBJECT.parentNode.removeChild(oOBJECT);
            }
        } else {
            var is64IE = isIE && navigator.userAgent.indexOf('x64') >= 0;
            //= ====如果页面有Lodop就直接使用，没有则新建:==========
            if (oOBJECT !== undefined || oEMBED !== undefined) {
                if (isIE) LODOP = oOBJECT;
                else LODOP = oEMBED;
            } else if (CreatedOKLodop7766 == null) {
                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);
                CreatedOKLodop7766 = LODOP;
            } else LODOP = CreatedOKLodop7766;
            //= ====Lodop插件未安装时提示下载地址:==========
            if (LODOP == null || typeof LODOP.VERSION === 'undefined') {
                if (navigator.userAgent.indexOf('Chrome') >= 0) {
                    document.documentElement.innerHTML = strHtmChrome + document.documentElement.innerHTML;
                }
                if (navigator.userAgent.indexOf('Firefox') >= 0) {
                    document.documentElement.innerHTML = strHtmFireFox + document.documentElement.innerHTML;
                }
                if (is64IE) document.write(strHtm64Install);
                else if (isIE) document.write(strHtmInstall);
                else {
                    document.documentElement.innerHTML = strHtmInstall + document.documentElement.innerHTML;
                }
                return LODOP;
            }
        }
        if (LODOP.VERSION < '6.2.0.8') {
            if (needCLodop()) {
                document.documentElement.innerHTML = strCLodopUpdate + document.documentElement.innerHTML;
            } else if (is64IE) document.write(strHtm64Update);
            else if (isIE) document.write(strHtmUpdate);
            else {
                document.documentElement.innerHTML = strHtmUpdate + document.documentElement.innerHTML;
            }
            return LODOP;
        }
        //= ==如下空白位置适合调用统一功能(如注册语句、语言选择等):===
        LODOP.SET_LICENSES('上海汽车信息产业投资有限公司', '1A1683BD13ED8A56138F8BF8328862FF', '', '');

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

//= ===页面引用CLodop云打印必须的JS文件：====
if (needCLodop()) {
    var head = document.head || document.getElementsByTagName('head')[0] || document.documentElement;
    var oscript = document.createElement('script');
    oscript.src = 'http://localhost:8000/CLodopfuncs.js?priority=1';
    head.insertBefore(oscript, head.firstChild);

    // oscript = document.createElement("script");
    // oscript.src = "http://192.168.7.153:8000/CLodopfuncs.js?priority=2";
    // head.insertBefore( oscript,head.firstChild );
}

export default {
    needCLodop,
    getLodop
};
