/* ********用户自定义配置区开始******** */
var oaldpeCfg = {
    // 【配置项1：是否显示中文翻译】（点击"词性导航"白色块可显示/隐藏中文翻译）
    // 选项（默认为false）：false=不显示，true=显示
    showTranslation: false,

    // 【配置项2：是否显示词性导航栏】
    // 选项（默认为true）：false=不显示，true=显示
    showNavbar: true,

    // 【配置项15：是否选中词性导航all：是否选中词性导航all】
    // 选项（默认为true）：false=否，true=是
    selectNavbarAll: true,

    // 【配置项17：是否启用英文点译功能】（单句显示/隐藏中文）
    // 选项（默认为true）：false=否，true=是
    touchToTranslate: true,

    // 【配置项3：是否显示音节划分】（点击单词可切换音节划分）
    // 选项（默认为true）：false=不显示，true=显示
    showSyllable: true,

    // 【配置项4：是否简化词性】（如verb简化为v.）
    // 选项（默认为true）：false=不简化，true=简化
    simplifyPos: true,

    // 【配置项5：是否简化语法】（如[transitive]简化为[t]）
    // 选项（默认为true）：false=不简化，true=简化
    simplifyGrammar: true,

    // 【配置项6：是否简化非例句中的something、somebody为sth、sb】
    // 选项（默认为true）：false=不简化，true=简化
    simplifySthSb: true,

    // 【配置项7：是否展开折叠块1】（绿虚线折叠区）
    // 选项（默认为true）：false=不展开，true=展开
    unfoldBox1: true,

    // 【配置项8：是否展开折叠块2】（浅红色折叠区）
    // 选项（默认为false）：false=不展开，true=展开
    unfoldBox2: false,

    // 【配置项9：是否展开折叠块3】（Idiom、Phrasal verbs）
    // 选项（默认为false）：false=不展开，true=展开
    unfoldBox3: false,

    // 【配置项10：是否展开义项】
    // 选项（默认为true）：false=否，true=是
    unfoldSense: true,

    // 【配置项11：点击Idioms、Phrasal verbs跳转后，自动展开内容】
    // 选项（默认为true）：false=不展开，true=展开
    jumpsBox3Unfold: true,

    // 【配置项12：点击小火箭返回后，自动折叠内容】
    // 选项（默认为true）：false=不折叠，true=折叠
    leavesBox3Fold: true,

    // 【配置项13：给粗体固定句式添加荧光笔下划线】
    // 选项（默认为true）：false=不添加，true=添加
    phrasesAddUnderline: true,

    // 【配置项14：是否使用普通样式的义项序号】
    // 选项（默认为false）：false=否，true=是
    normalSenseNumber: false,

    // 【配置项16：是否全局使用普通英文字体】
    // 选项（默认为false）：false=否，true=是
    normalEnglishFont: false,

    // 【配置项18：官方例句发音选项】（如果为0或1，则可删除oald.3.mdd文件）
    // 选项（默认为2）：0-不启用官方例句发音，1-启用官方在线例句发音，2-启用官方离线例句发音.ogg 3-启用官方离线例句发音.mp3（需要去网盘“文件替换”文件夹里下载oaldpe.3.mdd替换掉原来的文件）
    // （电脑欧路、IOS等不支持选项2，可填选项3）
    officialExPronOpt: 3,

    // 【配置项19：无官方例句发音时，是否启用在线TTS发音】（需要高版本浏览器内核。发音图标为灰色。Mdict和电脑欧路暂不支持。）
    // 选项（默认为true）：false=否，true=是
    enableOnlineTTS: true,

    // 【配置项20：是否在手机欧路词典里使用更大的屏宽】
    // 选项（默认为true）：false=否，true=是
    widerScreenEudic: true,

    // 【配置项21：是否使用台湾繁体中文翻译】
    // 选项（默认为false）：false=否，true=是
    showTraditional: false,

    // 【配置项22：离线图片翻译选项】（当【配置项27：是否使用在线图片】设置为true时，图片翻译无效）
    // 选项（默认为1）：0-不使用翻译，1-简体中文翻译，2-港版繁体翻译
    imgTranslationOpt: 1,

    // 【配置项23：使用预设主题】（此设置可能会覆盖某些配置项）
    // 选项（默认为0）：0-默认主题（不做任何修改），1-官网主题，2-欢迎大家分享自己的主题，后续更新可以加上。
    applyPresetTheme: 0,

    // 【配置项24：TTS英音发音配置】
    // 选项（默认为英音男1）：英音男1，英音男2，英音女1，英音女2，英音女3
    britishTTS: "英音男1",

    // 【配置项25：TTS美音发音配置】
    // 选项（默认为美音女1）：美音男1，美音男2，美音男3，美音男4，美音男5，美音女1，美音女2，美音女3，美音女4
    americanTTS: "美音女1",

    // 【配置项26：是否使用在线单词发音】（如果为true，则可删除oaldpe.1.mdd）
    // 选项（默认为false）：true=是，false=否
    onlineWordPron: false,

    // 【配置项27：是否使用在线图片】（如果为true，则可删除oaldpe.2.mdd。注：在线图片无中文翻译）
    // 选项（默认为false）：true=是，false=否
    onlineImage: false,

    // 【配置项28：是否隐藏手机欧路自带的hr标签】
    // 选项（默认为true）：true=是，false=否
    hideEudicAPPHr: true,

    // 【配置项29：是否在导航栏每个选项首尾加宽留白】（方便双击或单击时不会点到文字而触发查词功能）
    // 选项（默认为true）：true=是，false=否
    NavbarMargin: true,

    // 【配置项30：自定义折叠块2开关】（浅红色折叠区）
    // 选项（默认都为true）：false=不显示，true=显示
    box2ShowSwitch: {
        "verbforms": true, // 动词形式
        "wordorigin": true, // 词源
        "colloc": true,     // 词语搭配
        "snippet": true,   // 牛津搭配词典
        "wordfinder": true, // 联想词
        "extra_examples": true, // 更多例句
        "cult": true,       // 文化
        "synonyms": true,   // 同义词辨析
        "which_word": true, // 词语辨析
        "homophone": true,  // 同音词
        "more_about": true, // 词语辨析
        "mlt": true,        // 同类词语学习
        "wordfamily": true, // 词族
        "grammar": true,    // 语法说明
        "express": true,    // 情景表达
        "langbank": true,   // 用语库
        "vocab": true,      // 词汇扩充
        "british_american": true,  // 英式 / 美式
        "more_about": true, // 补充说明
    },

    // 【配置项31：自定义折叠块3开关】（Idioms、Phrasal verbs）
    // 选项（默认都为true）：false=不显示，true=显示
    box3ShowSwitch: {
        "idioms": true, // 习语
        "phrasal_verb_links": true, // 短语动词
    },

    // 【配置项32：其他显示开关】
    // 选项（默认都为true）：false=不显示，true=显示
    othersShowSwitch: {
        "h2.shcut": true, // 整个box1标题(包含英文和翻译)
        ".box_title unboxx": true, // box2标题翻译（浅红色折叠区）
        "h2.shcut shcut": true,  // box1标题翻译（绿虚线折叠区）
        ".symbols": true, // 钥匙图标
        ".phonetics": true, // 单词发音
        ".sense .def": true, // 义项英文
        ".examples": true, // 例句
        ".grammar": true, // 语法，如[transitive]或[t]
        ".cf": true, // 固定搭配，如take sth with you
        ".topic-g": true, // Topics
        ".use": true, // 用法，如(not used in the progressive tenses 不用于进行时)
        ".xrefs[xt='see']": true, // see also
        ".xrefs[xt='cp']": true, // 对比
        ".xrefs[xt='nsyn'], .oaldpe .xrefs[xt='syn']": true, // 同义词
        ".xrefs[xt='opp']": true, // 反义词
        ".labels": true, // 标签，如(informal非正式用语)
        ".pos": true, // 词性，如verb或v.
        ".dis-g": true, // 主要用于，如(of machines, etc.机器等)(of verbs, nouns, etc.动词、名词等)
        ".variants": true, // 变体，如(also break time)
        ".un[un=help]": true, // 帮助
        ".inflections": true, // 词形变化，如(plural As, A's, a's)
        "div#ox-enlarge": true, // 图片
    },

    // 【配置项33：自定义CSS样式】
    // 选项（默认都为空）：不为空=使用自定义，为空=不使用自定义
    // 示例1：{"color": "red"}
    // 示例2：{"color": "#BE002F", "font-size": "20px"}
    // 示例3：{"font-weight": "bold", "font-style": "italic"}
    // 示例4：{"background-color": "green", "font-style": "normal"}
    customizeCSS: {
        ".examples li .x": {}, // 例句英文
        ".examples li .x chn": {}, // 例句中文
        ".def": {}, // 义项的英文释义
        "deft > chn": {}, // 权威中文释义
        "h1.headword": {}, // 词头
        ".oaldpe-nav": {}, // 导航栏
        ".oaldpe-nav span": {}, // 导航栏选项
        ".pos": {}, // 词性，如verb或v.
        ".cf": {}, // 固定搭配，如take sth with you
        ".grammar": {}, // 语法，如[transitive]或[t]
        "div.li_sense_before": {}, // 义项数字

    },

    // 【配置项34：是否展开折叠块2的子标题栏下的内容】（浅红色折叠区）
    // 选项（默认为true）：false=不展开，true=展开
    unfoldBox2Subtitle: true,

    // 【配置项35：例句前的固定搭配使用代字号】（如把take sth with you替换为~ sth with you）
    // 选项（默认为true）：false=不使用，true=使用
    usePlaceholder: true,

};
/* ********用户自定义配置区结束******** */


(function () {
    var _userAgent = navigator.userAgent.toLowerCase();
    if ((/windows\snt/.test(_userAgent)
        && /chrome|firefox/.test(_userAgent)) || jQuery('.gdarticle').css('-webkit-column-gap') == '1px') {
        console.log('Windows Chrome/firefox detected.');
        if (/windows\snt/.test(_userAgent) && /chrome|firefox/.test(_userAgent))
            $("a.speaker").click(function () {
                fSound = $(this).attr('href');
                fSound = fSound.replace('sound://', '');
                (new Audio(fSound)).play();
            });
        return jQuery;
    } else {
        return jQuery.noConflict(true)
    }
})()

(function ($) {
    // avoiding repeated loading
    if ($(".oaldpe #is-oaldpe-loaded").length) {
        return;
    } else {
        $('<div id="is-oaldpe-loaded" style="display: none;"></div>').appendTo('.oaldpe');
    }

    // variable declaration area
    const OALDPE_NAVBAR_CLASS = "oaldpe-nav";
    const OALDPE_NAVBAR_SELECTOR = "." + OALDPE_NAVBAR_CLASS;

    const OALDPE_PREFIX_FULL_IMAGE =  "https://www.oxfordlearnersdictionaries.com/media/english/fullsize/";
    const OALDPE_PREFIX_THUMB_IMAGE = "https://www.oxfordlearnersdictionaries.com/media/english/thumb/";
    const OALDPE_PREFIX_WORD_UK = "https://www.oxfordlearnersdictionaries.com/media/english/uk_pron/";
    const OALDPE_PREFIX_WORD_US = "https://www.oxfordlearnersdictionaries.com/media/english/us_pron/";
    const OALDPE_PREFIX_EXAMPLE = "https://oxford-x-file.oss-cn-hangzhou.aliyuncs.com/audio/xgs/xgs_audio/";

    const OALDPE_POS = {
        "noun": "n.",
        "adjective": "adj.",
        "adverb": "adv.",
        "abbreviation": "abbr.",
        "adverb, adjective": "adv., adj.",
        "verb": "v.",
        "phrasal verb": "phrasal v.",
        "exclamation": "interj.",
        "idiom": "idiom",
        "conjunction": "conj.",
        "preposition": "prep.",
        "modal verb": "modal v.",
        "combining form": "combining form",
        "prefix": "prefix",
        "linking verb": "linking v.",
        "suffix": "suffix",
        "number": "num.",
        "pronoun": "pron.",
        "ordinal number": "ordinal num.",
        "determiner": "det.",
        "auxiliary verb": "aux. v.",
        "indefinite article": "indefinite a.",
        "definite article": "definite a.",
        "infinitive marker": "infinitive marker",
        "symbol": "symbol",
        "adjective, adverb": "adj., adv.",
        "adverb, preposition": "adv., prep.",
        "noun, adjective": "n., adj.",
        "short form": "short form",
        "noun, exclamation": "n., interj.",
        "exclamation, noun": "interj., n.",
        "determiner, pronoun": "det., pron.",
        "preposition, adverb": "prep., adv.",
        "adjective, exclamation": "adj., interj.",
        "preposition, conjunction, adverb": "prep., conj., adv.",
        "adjective, adverb, exclamation": "adj., adv., interj.",
        "adjective, noun": "adj., n.",
        "adverb, exclamation": "adv., interj.",
        "noun, determiner": "n., det.",
        "determiner, pronoun, adverb": "det., pron., adv.",
        "conjunction, preposition": "conj., prep.",
        "adverb, pronoun, conjunction": "adv., pron., conj.",
        "determiner, adjective": "det., adj.",
        "determiner, ordinal number": "det., ordinal num.",
        "noun, abbreviation": "n., abbr.",
        "exclamation, adjective": "interj., adj.",
        "conjunction, adverb": "conj., adv.",
        "adjective, pronoun": "adj., pron.",
        "number, determiner": "num., det.",
        "noun, verb": "n., v.",
        "pronoun, determiner": "pron., det.",
        "preposition, conjunction": "prep., conj.",
        "exclamation, adverb, pronoun": "interj., adv., pron.",
        "adverb, conjunction": "adv., conj.",
        "adverb, noun": "adv., n.",
    }
    const OALDPE_GRAMMAR = {
        "[uncountable]": "[U]",
        "[only before noun]": "[only bf N]",
        "[singular]": "[sing]",
        "[countable]": "[C]",
        "[countable, uncountable]": "[C, U]",
        "[after noun]": "[aft N]",
        "[not before noun]": "[not bf N]",
        "[usually before noun]": "[usu bf N]",
        "[usually singular]": "[usu sing]",
        "[uncountable, countable]": "[U, C]",
        "[intransitive, transitive]": "[I, T]",
        "[usually passive]": "[usu psv]",
        "[plural]": "[pl]",
        "[transitive]": "[T]",
        "[uncountable, singular]": "[U, sing]",
        "[intransitive]": "[I]",
        "[often passive]": "[oft psv]",
        "[not usually before noun]": "[not usu bf N]",
        "[singular, uncountable]": "[sing, U]",
        "[uncountable, plural]": "[U, pl]",
        "[usually plural]": "[usu pl]",
        "[countable, usually plural]": "[C, usu pl]",
        "[uncountable, countable, usually singular]": "[U, C, usu sing]",
        "[transitive, intransitive]": "[T, I]",
        "[intransitive, transitive, often passive]": "[I, T, oft psv]",
        "[transitive, often passive]": "[T, oft psv]",
        "[countable, usually singular]": "[C, usu sing]",
        "[countable + singular or plural verb]": "[C + sing or pl V]",
        "[uncountable + singular or plural verb]": "[U + sing or pl V]",
        "[transitive, usually passive]": "[T, usu psv]",
        "[transitive, often passive, intransitive]": "[T, oft psv, I]",
        "[no passive]": "[no psv]",
        "[countable, usually singular, uncountable]": "[C, usu sing, U]",
        "[countable, usually plural, uncountable]": "[C, usu pl, U]",
        "[plural, singular or plural verb]": "[pl, sing or pl V]",
        "[singular + singular or plural verb]": "[sing + sing or pl V]",
        "[countable, singular, uncountable]": "[C, sing, U]",
        "[intransitive, transitive, no passive]": "[I, T, no psv]",
        "[transitive, no passive]": "[T, no psv]",
        "[uncountable, countable, usually plural]": "[U, C, usu pl]",
        "[plural, uncountable]": "[pl, U]",
        "[countable + singular or plural verb, uncountable]": "[C + sing or pl V, U]",
        "[transitive, intransitive, often passive]": "[T, I, oft psv]",
        "[intransitive, transitive, usually passive]": "[I, T, usu psv]",
        "[transitive, usually passive, intransitive]": "[T, usu psv, I]",
        "[countable, plural]": "[C, pl]",
        "[singular or plural verb]": "[sing or pl V]",
        "[countable, uncountable + singular or plural verb]": "[C, U + sing or pl V]",
        "[uncountable + singular or plural verb, countable]": "[U + sing or pl V, C]",
        "[countable, singular]": "[C, sing]",
        "[uncountable, countable, singular]": "[U, C, sing]",
        "[countable, singular + singular or plural verb]": "[C, sing + sing or pl V]",
        "[singular + singular or plural verb, uncountable]": "[sing + sing or pl V, U]",
        "[transitive, no passive, intransitive]": "[T, no psv, I]",
        "[usually singular, uncountable]": "[usu sing, U]",
        "[transitive, intransitive, usually passive]": "[T, I, usu psv]",
    }

    var globalAudio = new Audio();
    var conciseMeaning = !oaldpeCfg.unfoldSense;

    // main

    initialize();

    fnSimplifyPos(oaldpeCfg.simplifyPos);
    
    fnShowNavbar(oaldpeCfg.showNavbar);

    fnShowTraditional(oaldpeCfg.showTraditional);

    fnUnfoldBox1(oaldpeCfg.unfoldBox1);

    fnUnfoldBox2(oaldpeCfg.unfoldBox2);

    fnUnfoldBox3(oaldpeCfg.unfoldBox3);

    fnUnfoldSense(oaldpeCfg.unfoldSense);

    fnBox2ShowSwitch(oaldpeCfg.box2ShowSwitch);

    fnSimplifySthSb(oaldpeCfg.simplifySthSb);

    fnPhrasesAddUnderline(oaldpeCfg.phrasesAddUnderline);

    fnNormalSenseNumber(oaldpeCfg.normalSenseNumber);

    fnHideEudicAPPHr(oaldpeCfg.hideEudicAPPHr);

    fnSelectNavbarAll(oaldpeCfg.selectNavbarAll);

    fnOnlineImage(oaldpeCfg.onlineImage);
    
    fnSimplifyGrammar(oaldpeCfg.simplifyGrammar);

    fnNormalEnglishFont(oaldpeCfg.normalEnglishFont);

    fnShowSyllable(oaldpeCfg.showSyllable);

    fnShowTranslation(oaldpeCfg.showTranslation);

    fnBox3ShowSwitch(oaldpeCfg.box3ShowSwitch);

    fnEnableOnlineTTS(oaldpeCfg.enableOnlineTTS);

    fnOthersShowSwitch(oaldpeCfg.othersShowSwitch);

    addRocketAndReturn();

    fnWiderScreenEudic(oaldpeCfg.widerScreenEudic);

    scrollingAndJumping();

    fnImgTranslationOpt(oaldpeCfg.imgTranslationOpt);

    imageZoomEvent();

    fnOfficialExPronOpt(oaldpeCfg.officialExPronOpt);

    fnApplyPresetTheme(oaldpeCfg.applyPresetTheme);

    addBox2Toggle();

    fnCustomizeCSS(oaldpeCfg.customizeCSS);
    
    fnOnlineWordPron(oaldpeCfg.onlineWordPron);

    fnUsePlaceholder(oaldpeCfg.usePlaceholder);    

    termNumberClickEvent();

    extendTranslationAreaForExamples();

    fnUnfoldBox2Subtitle(oaldpeCfg.unfoldBox2Subtitle);

    fnTouchToTranslate(oaldpeCfg.touchToTranslate);


    // main end

    // alert(navigator.userAgent.toLowerCase());

    // function declaration area

    function fnUsePlaceholder(itemValue) {
        itemValue && $(".oaldpe .cf").each(function() {
            _$headword = $(this).parents(".senses_multiple, .sense_single").prev().find(".headword");
            _headword = _$headword.text().replace("·", "");
            if (_headword !== "") {
                $(this).text($(this).text().replace(_headword, "~"))
                console.log("ok");
            } else {
                console.log("no");
            }
        });
    }

    function fnUnfoldBox2Subtitle(itemValue) {
        if (!itemValue)
            $(".collapse > .unbox > .body > .unbox+.bullet").hide();

        $(".collapse > .unbox > .body > .unbox").click(function(e) {
            if ($(this).next().hasClass("bullet") && ($(e.target).is($(this)))) {
                e.stopPropagation();
                $(this).next().slideToggle("fast");
            }
        })
    }

    function initialize() {
        $(".oaldpe").show();

        // 兼容DictTango
        // 实现idioms和prasal verbs的滚动跳转
        // $(".oaldpe .jumplinks a.Ref").each(function() {  
        //     var _objHref = $(this).attr("href");
        //     _objHref = _objHref.replace("entry://", "");
        //     if ($(this).attr("href") !== _objHref)
        //         $(this).attr("href", _objHref);
        //     $(".oaldpe").before(`<div>kkkk</div>`);

        // });
    }

    function extendTranslationAreaForExamples() {
        if (oaldpeCfg.officialExPronOpt === 0 || oaldpeCfg.enableOnlineTTS === false) {
            $('.oaldpe example-audio, .oaldpe example-audio-ai').filter(function() {
                return !$(this).is(":visible");
            }).prev().addClass('inlineblock');
        }
    }

    function fnTouchToTranslate(itemValue) {
        if (!itemValue) 
            return;

        // examples
        $(".oaldpe ul.examples > li").click(function(e) {
            e.stopPropagation();
            $(this).find("chn").each(function() {
                if (!$(this).parent().is("labelx")) {
                    $(this).slideToggle("fast");
                } else {
                    $(this).fadeToggle("fast");
                }
            })
            box3RefreshHeight();
        });

        // ask-after: .webtop > .variants or .use
        $(".oaldpe .top-container .webtop .variants, .oaldpe .top-container .webtop .use").click(function(e) {
            e.stopPropagation();
            $(this).find("chn").fadeToggle("fast");
        })


        // title of box1
        $('.oaldpe h2')
        .each(function() {  
            $(this).contents().wrap('<div class="h2content"></div>');  
        })
        .find("div.h2content, chn")
        .click(function(e) {
            if ($(e.target).is('chn')) {
                e.stopPropagation(); 
                $(e.target).fadeToggle("fast");
            } else if ($(e.target).is('.h2content')) {
                _$chn = $(e.target).next().find("chn");
                if (_$chn.parent().is(":visible")) {
                    _$chn.fadeToggle("fast");
                    e.stopPropagation(); 
                }
            }
        });

        // global click event for sense
        $(".oaldpe li.sense .unbox").click(function(e) {
            e.stopPropagation(); 
        });
        $(".oaldpe li.sense").click(function(e) {
            e.stopPropagation(); 
            $(this).find("span.def").siblings("deft, .sensetop, .labels, .dis-g, .use, .variants").find("chn").fadeToggle("fast");
            box3RefreshHeight();
        });

        // light red background area
        $(".oaldpe span.un").click(function(e) {
            e.stopPropagation(); 
            $(this).find("chn").fadeToggle("fast");
            box3RefreshHeight();
        });

        // box2 event
        var _$unboxs = $('.oaldpe .collapse > .unbox');
        _$unboxs.each(function() {
            // title of box2
            $(this).find(".box_title div.text_title").click(function(e) {
                _$chn = $(this).siblings("unboxx").find("chn")
                if (_$chn.parent().is(":visible")) {
                    e.stopPropagation(); 
                    _$chn.fadeToggle("fast");
                    box3RefreshHeight();
                }
            })
            $(this).find(".box_title chn").click(function(e) {
                e.stopPropagation(); 
                $(this).fadeToggle("fast");
            });

            // Collocations 词语搭配: gospel-2(Collocations), word title
            $(this).find(".body > .unbox").click(function(e) {
                if (!($(e.target).is($(this)))) {
                    e.stopPropagation();
                    $(this).find("chn").fadeToggle("fast");
                    box3RefreshHeight();
                }
            });

            // Collocations 词语搭配: gospel-2, 所有义项
            $(this).find(".body > .bullet > li.li").click(function(e) {
                if ($(this).find(".item").length === 0) {
                    e.stopPropagation();
                    $(this).find("chn").fadeToggle("fast");
                    box3RefreshHeight();
                }
            });

            // Synonyms 同义词辨析：take-2(所有义项)
            $(this).find(".defpara").click(function(e) {
                _$chn = $(this).children("undt").find("chn")
                if (_$chn.length) {
                    e.stopPropagation(); 
                    _$chn.fadeToggle("fast");
                    box3RefreshHeight();
                }
            });
            // Synonyms 同义词辨析：take-2(p标签翻译)
            $(this).find(".body > span.p, .unbox .defpara .eb_undt").click(function(e) {
                e.stopPropagation(); 
                $(this).find("chn").fadeToggle("fast");
            });

            // Which Word? 词语辨析：take-4(the definition)
            $(this).find(".body > ul.bullet > li > .item")
            .click(function(e){
                e.stopPropagation();
                $(this).children("undt").find("chn").fadeToggle("fast");
                box3RefreshHeight();
            });
        });

    }

    function termNumberClickEvent() {
        $(".oaldpe .li_sense_before, .oaldpe .idm").click(function(e) {
            e.stopPropagation(); 
            if ($(this).hasClass("li_sense_before")) {
                var _$objEle = $(this).next();
            } else {
                var _$objEle = $(this).parents(".idm-g");
            }
            _isVisible = _$objEle.find(".examples, .collapse, .un, .xrefs, .topic-g, div#ox-enlarge").is(":visible");

            if (_isVisible) {
                _$objEle.children(".examples, .collapse, .un, .xrefs, .topic-g").slideUp("fast");
                _$objEle.find("div#ox-enlarge").slideUp("fast");
            } else {
                _$objEle.children(".examples, .collapse, .un, .xrefs, .topic-g").slideDown("fast");
                _$objEle.find("div#ox-enlarge").slideDown("fast");
            }
        });
    }

    function addBox2Toggle() {
        $(".oaldpe .box_title").click(function(e) {  
            e.stopPropagation(); 
            $(this).next().slideToggle("fast").parent().toggleClass("is-active");
            box3RefreshHeight();
        });
    }

    function fnApplyPresetTheme(itemValue) {
        if (itemValue === 1) {
            fnNormalEnglishFont(true);
            fnPhrasesAddUnderline(false);
            fnNormalSenseNumber(true);
            fnSimplifyPos(false);
            fnSimplifyGrammar(false);
            $(".oaldpe ul.examples > li > .exText > .x").css("color", "black");
            $(".oaldpe h1.headword").css("color", "#1A3561");
            $(".oaldpe .pos").css({"font-style": "italic", "color": "#333333", "border-color": "transparent", "background-color": "transparent", "font-weight": "normal"});
            $(".oaldpe div.li_sense_before").css({"font-family": "unset", "font-style": "unset"});
        }
    }

    function fnOfficialExPronOpt(itemValue) {
        if (itemValue === 0) {
            $('.oaldpe example-audio').addClass('audio_hide');  
            return;
        } 

        // 启用官方例句在线发音
        (itemValue === 1) && $(".oaldpe example-audio a")
        .each(function(){
            var _thisHref = $(this).attr("href");
            if (isGoldenDict())
                _thisHref = _thisHref.replace(getLastSlashContent(_thisHref), "sound:/");

            var newHref = OALDPE_PREFIX_EXAMPLE + _thisHref.replace("sound://", "").replace(".ogg", ".wav");
            $(this).attr("href", newHref);
        })
        .click(function(e){
            var _thisHref = $(this).attr("href");
            if (_thisHref.startsWith("http") && (_thisHref.endsWith(".mp3")
                || _thisHref.endsWith(".wav") || _thisHref.endsWith(".ogg"))) {

                console.log("---------- play online");
                e.preventDefault();
                e.stopPropagation();

                !globalAudio.paused && globalAudio.pause();
                globalAudio.src = _thisHref;
                globalAudio.play();

            }
        });

        // 启用官方例句离线发音
        (itemValue === 2 || itemValue === 3) 
            && $(".oaldpe example-audio a").click(function(e){
            var _thisHref = $(this).attr("href");

            if ((_thisHref.startsWith("sound://") || (_thisHref.startsWith("gdau://"))) && (_thisHref.endsWith(".mp3")
                || _thisHref.endsWith(".wav") || _thisHref.endsWith(".ogg"))) {

                e.stopPropagation();

                if (itemValue === 3)
                    _thisHref = _thisHref.replace("%23", "_").replace(".ogg", ".mp3").replace(".wav", ".mp3");

                if (oaldpeCfg.enableOnlineTTS && !isEudicPC() && !isGoldenDict()) {
                    !globalAudio.paused && globalAudio.pause();
                    globalAudio.src = _thisHref.replace("sound://", "");
                    globalAudio.play();
                    e.preventDefault();
                } else {
                    // 不启用TTS时或特殊词典，使用系统默认发音
                    $(this).attr("href", _thisHref);
                }

            }
        });
    }

    function imageZoomEvent() {
        $(".oaldpe #ox-enlarge").click(function (e) {
            e.stopPropagation(); 

            var _$fullsize = $(this).find("img.fullsize"),
                _$thumb = $(this).find("img.thumb");

            if (_$fullsize.css("display") === "block") {
                console.log("zoom out");
                _$fullsize.css("display", "none") && _$thumb.css("display", "block");
                $(this).css({"width": "100px", "height": "100px", "left": "0"});
                $(this).find("span.ox-enlarge-label").css({"position": "absolute", "margin": "0"});
            } else {
                console.log("zoom in");
                _$fullsize.css("display", "block") && _$thumb.css("display", "none");
                $(this).css({"width": "100%", "height": "auto", "left": "5px"});
                $(this).find("span.ox-enlarge-label").css({"position": "static", "margin": "0 5px 5px 0"});
            }
        });
    }
    function getLastSlashContent(str) {
      const lastSlashIndex = str.lastIndexOf('/');
      if (lastSlashIndex === -1) {
        return str;
      }
      return str.substring(0, lastSlashIndex);
    }

    function fnImgTranslationOpt(itemValue) {
        // 图片翻译：0-不使用翻译 1-简体中文翻译 2-台湾繁体翻译
        $(".oaldpe img.fullsize, .oaldpe img.thumb").each(function(){
            var _newSrc = $(this).attr("src");
            if (itemValue === 1) {
                _newSrc = _newSrc.replace("/oa10simp/", "/oa10simp/").replace("\\oa10simp\\", "\\oa10simp\\");
            } else if (itemValue === 2) {
                _newSrc = _newSrc.replace("/oa10simp/", "/oa10orth/").replace("\\oa10simp\\", "\\oa10orth\\");
            } else {
                _newSrc = _newSrc.replace("/oa10simp/", "/oa10src/").replace("\\oa10simp\\", "\\oa10src\\");
            }
            $(this).attr("src", _newSrc);
        });
    }

    function scrollingAndJumping() {
        // 实现idioms和prasal verbs的滚动跳转
        $(".oaldpe .jumplinks a.Ref").click(function(e) {  
            e.preventDefault();
            var objHref = $(this).attr("href");
            var heightSpace = 48; 

            // $(".oaldpe").before(`<div>${objHref}</div>`);
            // var _temp = $(objHref).length;
            // $(".oaldpe").before(`<div>${$(objHref).offset().top - heightSpace}</div>`);

            $('html, body').animate({   
                scrollTop: $(objHref).offset().top - heightSpace
            }, {
                duration: 300,    
                complete: function() {  
                    if (oaldpeCfg.jumpsBox3Unfold && $(this).is("html")) 
                        box3Unfold(objHref);
                }
            });
        });
    }

    function fnWiderScreenEudic(itemValue) {
        itemValue && isEudicAPP() && $(".oaldpe").parent().css({
            "margin": "5px 8px 5px 5px",
            "padding": "0"
        });
    }

    function box3Toggle($obj) {
        if ($obj.hasClass('expanded')) {
            $obj.animate({height: '26px'}, 180, function() {
                $obj.removeClass('expanded');
            });
        } else {
            var actualHeight = $obj.prop('scrollHeight') - 19.2;
            console.log("内容高度为："+actualHeight);
            $obj.animate({height: actualHeight + "px"}, 180, function() {
                $obj.addClass('expanded');
            });
        }
    }

    function box3Fold($obj) {
        $obj.parent().parent().css({height: '26px'}).removeClass('expanded');
    }

    function addRocketAndReturn() {
        var _$jumplinksA = $(".oaldpe .jumplinks a.Ref");
        $(".idioms > .idioms_heading, .phrasal_verb_links > .unbox").each(function(i) {
            var _titleHtml = $(this).hasClass("idioms_heading") 
                ? "<div class='idioms_title'></div>"
                : "<div class='phrasal_title'></div>"
            var _$box3Title = $(_titleHtml).click(function() {
                box3Toggle($(this).parent());
            });

            $(this).wrap(_$box3Title);

            var _$objEle = _$jumplinksA.eq(i);
            var _rocketHtml = $(this).hasClass("idioms_heading") 
                ? '<a class="idioms_back" style="cursor: pointer"></a>'
                : '<a class="phrasal_back" style="cursor: pointer"></a>'
            var _$returnRocket = $(_rocketHtml).click(function(e) {
                e.stopPropagation();
                // $(".oaldpe").before(`<div>${_$objEle}</div>`);
                if (oaldpeCfg.leavesBox3Fold)
                    box3Fold($(this));
                $('html, body').animate({ scrollTop: _$objEle.offset().top - 48 }, 300);
            });
            $(this).after(_$returnRocket);
        })        
    }

    function box3Unfold(objEleId) {
        var actualHeight = $(objEleId).prop('scrollHeight') - 19.2;
        console.log("内容高度为：" + actualHeight);
        $(objEleId).animate({height: actualHeight + "px"}, 180, function() {
            $(objEleId).addClass('expanded');
        });
    }

    function fnCustomizeCSS(itemValues) {
        var _keysWithFalseValue = Object.keys(itemValues)
            .filter(key => Object.keys(itemValues[key]).length !== 0);
        for (var i = 0; i < _keysWithFalseValue.length; i++) {
            _css = itemValues[_keysWithFalseValue[i]];
            _selector = ".oaldpe " + _keysWithFalseValue[i];
            $(_selector).css(_css);
        }
    }

    function fnOthersShowSwitch(itemValues) {
        var _keysWithFalseValue = Object.keys(itemValues)
            .filter(key => !itemValues[key]);
        if (_keysWithFalseValue.length) {
            var _selectors = _keysWithFalseValue.map(item => `.oaldpe ${item}`).join(' ,');
            $(_selectors).hide();
        }
    }

    function fnBox3ShowSwitch(itemValue) {
        if (!itemValue["idioms"])
            $(".oaldpe div.idioms[hclass='idioms']").hide();

        if (!itemValue["phrasal_verb_links"])
            $(".oaldpe aside.phrasal_verb_links[hclass='phrasal_verb_links']").hide();

        if (!itemValue["idioms"] && !itemValue["phrasal_verb_links"]) {
            $(".oaldpe span.jumplinks").hide();
        } else if (!itemValue["idioms"]) {
            $(".oaldpe span.jumplinks a.Ref[title='Idioms definition']").hide();
        } else if (!itemValue["phrasal_verb_links"]) {
            $(".oaldpe span.jumplinks a.Ref[title='Phrasal Verbs definition']").hide();
        }
    }

    function fnBox2ShowSwitch(itemValues) {
        var _keysWithFalseValue = Object.keys(itemValues).filter(key => !itemValues[key]);
        if (_keysWithFalseValue.length) {
            var _selectors = _keysWithFalseValue.map(item => `.oaldpe .collapse .unbox[unbox=${item}]`).join(', ');
            $(_selectors).closest('div.collapse').hide();
        }
    }

    function fnEnableOnlineTTS(itemValue) {
        !itemValue && $('.oaldpe example-audio-ai').addClass('audio_hide');    
        itemValue && $(".oaldpe example-audio-ai a.audio_uk,  .oaldpe example-audio-ai a.audio_us")
        .click(function(e){
            e.stopPropagation();
            e.preventDefault();
            globalAudio.src = ""; // 在ios上TTS要先把src设置为空，第一次播放才会发音

            selectedTTS = $(this).hasClass("audio_uk") ? oaldpeCfg.britishTTS : oaldpeCfg.americanTTS;
            eleExText = $(this).parent().siblings("div.exText").clone();
            eleExText.find(".cf, chn").remove();
            speak_text = eleExText.text().replace(/\(.*?\)/g, "");
            if (speak_text.includes("/")) {
                slash_word = speak_text.match(/\w+(?:\/\w+)+/)[0];
                splited_word = slash_word.split("/");
                list_result = [];
                for (each of splited_word) {
                    list_result.push(speak_text.replace(slash_word, each));
                }
                speak_text = list_result.join("\nor ");
            }
            speak(speak_text);
        });
    }

    function fnUnfoldSense(itemValue) {
        !itemValue && $(".oaldpe .li_sense_before").next().find(".examples, .collapse, .un, .xrefs, .topic-g").hide();
    }

    function fnUnfoldBox3(itemValue) {
        if (itemValue) {
            $(".oaldpe .idioms").addClass('expanded');
            $(".oaldpe .idioms").css("height", "auto");
            $(".oaldpe .phrasal_verb_links").addClass('expanded');
            $(".oaldpe .phrasal_verb_links").css("height", "auto");
        }
    }

    function fnUnfoldBox2(itemValue) {
        if (itemValue) {
            $(".oaldpe .box_title").parent().addClass("is-active");
            $(".oaldpe .box_title").next().show();

        } else {
            $(".oaldpe .box_title").parent().removeClass("is-active");
            $(".oaldpe .box_title").next().hide();
        }        
    }

    function fnUnfoldBox1(itemValue) {
        !itemValue && $(".oaldpe h2").siblings().hide();

        $(".oaldpe h2").click(function(e) {
            e.stopPropagation();
            $(this).siblings().slideToggle("fast");
        });
    }

    function fnSimplifySthSb(itemValue) {
        itemValue && $('.oaldpe .cf,.x,.def').each(function() {  
            _newHtml = $(this).html().replace(/something/g, 'sth').replace(/somebody/g,'sb');
            $(this).html(_newHtml);  
        });        
    }

    function fnPhrasesAddUnderline(itemValue) {
        if (itemValue) {
            $('.oaldpe .cf').addClass('underline');
        } else {
            $('.oaldpe .cf').removeClass('underline');
        }
    }

    function fnNormalSenseNumber(itemValue) {
        !itemValue && $('.oaldpe div.li_sense_before').addClass('colored');
    }

    function fnShowNavbar(itemValue) {
        if (!itemValue)
            return;

        addNavigation();

        var doubleClickTimer;
        $(OALDPE_NAVBAR_SELECTOR).find("span")
        .on("click", function() {
            if ($(this).hasClass("active")) {
                clearTimeout(doubleClickTimer);
                _$thisObj = $(this);
                doubleClickTimer = setTimeout(function() {
                    console.log("navbar: chinese_toggle");
                    chineseToggle();
                }, 250);
            } else {
                console.log("navbar: index is changed");
                $(this).siblings().removeClass('active');
                $(this).addClass('active');
                showHideEntry($(this).text() === "All" ? -1 : $(this).index());
            }
        })
        .on("dblclick", function() {
            if ($(this).hasClass("active")) {
                clearTimeout(doubleClickTimer);
                console.log("navbar: doubleClick");

                const _selectors = {
                    allExpand: [
                        ".oaldpe .sense .examples",
                        ".oaldpe .sense .collapse",
                        ".oaldpe .sense .un",
                        ".oaldpe .sense .xrefs",
                        ".oaldpe .sense .topic-g",
                    ],
                    h2: ".oaldpe h2",
                    box2: ".oaldpe .box_title",
                    box3: [
                        ".oaldpe .idioms",
                        ".oaldpe .phrasal_verb_links"
                    ],
                    box3Phrasal: "",
                    enlargeImage: ".oaldpe div#ox-enlarge",
                };

                if (conciseMeaning) {
                    // 全部展开
                    $(_selectors.allExpand.join(", ")).slideDown("fast");

                    // 折叠块2>折叠
                    $(_selectors.box2).parent().addClass("is-active");
                    $(_selectors.box2).next().slideDown("fast");

                    // 折叠块3>展开
                    $(_selectors.box3.join(", ")).addClass('expanded').css("height", "auto");

                    // 图片
                    $(_selectors.enlargeImage).slideDown("fast");
                } else {
                    // 全部折叠
                    $(_selectors.allExpand.join(", ")).slideUp("fast");
                    $(_selectors.h2).siblings().slideDown("fast");

                    // 折叠块2>折叠
                    $(_selectors.box2).parent().removeClass("is-active");
                    $(_selectors.box2).next().slideUp("fast");

                    // 折叠块3>折叠
                    $(_selectors.box3.join(", ")).css("height", "26px").removeClass('expanded'); 

                    // 图片
                    $(_selectors.enlargeImage).slideUp("fast");
                }
                conciseMeaning = !conciseMeaning;
            }
        });
    }

    function addNavigation() {
        // 已添加不添加
        if ($(".oaldpe-nav").length)
            return;
        // if ($(".oaldpe-nav").length)
        //     return;

        var _$eles = $(".oaldpe .oald");
        // 没有entry不添加
        if (_$eles.length < 1)
            return;

        var container = $("<div></div>").addClass(OALDPE_NAVBAR_CLASS);
        for (var i = 0; i < _$eles.length; i++) {
            var _$sp = $("<span></span>");
            var _$pos = _$eles.eq(i).find(".pos").eq(0);
            _$pos = _$pos.length && _$pos.text();
            _$pos = !_$pos ? _$eles.eq(i).find(".headword").text() : _$pos;
            _$sp.text(OALDPE_POS[_$pos] ? OALDPE_POS[_$pos] : _$pos);
            if (!oaldpeCfg.selectNavbarAll && i === 0) {
                _$sp.addClass("active");
            }
            container.append(_$sp);
        }

        // 添加All
        var _$spAll = $("<span>All</span>");
        oaldpeCfg.selectNavbarAll && _$spAll.addClass('active');
        container.append(_$spAll);
        
        showHideEntry(oaldpeCfg.selectNavbarAll ? -1 : 0);

        // 不能加在.oaldpe里
        // $(".oaldpe").prepend(container);
        container.insertBefore($(".oaldpe").eq(0));

        if (oaldpeCfg.NavbarMargin)
            $(".oaldpe-nav span").css({"padding": ".2rem 1.2rem"})
    }

    function showHideEntry(index) {
        var _$eles = $(".oaldpe .oald");
        for (var i = 0; i < _$eles.length; i++) {
            if (index === i || index < 0) {
                _$eles.eq(i).show();
            } else {
                _$eles.eq(i).hide();
            }
        }
    }

    function fnSelectNavbarAll(itemValue) {
        // 词性导航滚动到最右边
        if (itemValue && oaldpeCfg.showNavbar) {
            var _$navbar = $(".oaldpe-nav");
            // 由于手机欧路滚动失效，所以加10000个像素
            _$navbar.scrollLeft(_$navbar.scrollLeft() + _$navbar.width() + 10000);
        }
    }

    function fnShowTranslation(itemValue) {
        !itemValue && $(".oaldpe chn").hide();
    }

    function fnShowSyllable(itemValue) {
        $(".oaldpe .headword")
        .click(function(e) {
            e.stopPropagation();
            var selection = window.getSelection();
            if (selection.toString().length > 0 && this.contains(selection.anchorNode)) {
                // $(this).trigger('textSelected', [selection]);
                console.log("有文本被选中");
            } else {
                toggleSyllable($(this));
            }
        })
        .each(function() {
            if (!itemValue)
                toggleSyllable($(this));
        });        
    }

    function fnNormalEnglishFont(itemValue) {
        if (itemValue) {
            $(".oaldpe h1.headword, h2.h, h1.headword .st ,.pos ,.symbols a span.opal_symbol,.cf,div.li_sense_before,ul.examples > li > .x ,jumplink,.jumplink ,span.unx ,.oaldpe-nav ,.examples li span.labels, .examples li div.exText span.x").addClass('normal_eglFont');
            $(".oaldpe").find('.oaldpe-nav').addClass('normal_eglFont');
        }
    }

    function fnSimplifyGrammar(itemValue) {
        itemValue && $(".oaldpe .grammar").each(function() {
            $(this).text(OALDPE_GRAMMAR[$(this).text()]);
        });
    }

    function fnSimplifyPos(itemValue) {
        itemValue && $(".oaldpe .pos").each(function(){
            $(this).text(OALDPE_POS[$(this).text()]);
        });
    }

    function fnOnlineImage(itemValue) {
        itemValue && $(".oaldpe div#ox-enlarge img").each(function(){
            $(this).attr("src", getOnlineImageUrl($(this).attr("src")));
        });
    }

    function fnOnlineWordPron(itemValue) {
        itemValue && $('.oaldpe .audio_play_button')
        .each(function(){
            $(this).attr("href", getOnlineWordPronUrl($(this).attr("href")));
        })
        .click(function(e){
            e.preventDefault();
            globalAudio.paused || globalAudio.pause();
            globalAudio.src = $(this).attr("href");
            globalAudio.play();
        });        
    }

    function fnHideEudicAPPHr(itemValue) {
        itemValue && isEudicAPP() && $(".oaldpe").parent().find("hr").not('.oaldpe hr').hide();
    }

    function fnShowTraditional(itemValue) {
        if (itemValue) {
            $(".oaldpe chn.simple").remove();
        } else {
            $(".oaldpe chn.traditional").remove();
        }
    }

    function box3RefreshHeight() {
        $(".oaldpe .idioms.expanded").css("height", "auto");
        $(".oaldpe .phrasal_verb_links.expanded").css("height", "auto");
    }

    function chineseToggle() {
        if (oaldpeCfg.showTranslation) {
            $(".oaldpe chn").fadeOut("fast");
        } else {
            $(".oaldpe chn").fadeIn("fast");
        }
        oaldpeCfg.showTranslation = !oaldpeCfg.showTranslation;        

        box3RefreshHeight();
    }

    function isEudic() {
        var ua = navigator.userAgent.toLowerCase();
        return ua.indexOf("eudic") > -1;
    }

    function isEudicAPP() {
        var ua = navigator.userAgent.toLowerCase();
        return (ua.indexOf("eudic") > -1) && (ua.indexOf("android") > -1 || ua.indexOf("iphone") > -1);
    }

    function isEudicAPPIphone() {
        var ua = navigator.userAgent.toLowerCase();
        return ua.indexOf("eudic") > -1 && ua.indexOf("iphone") > -1;
    }

    function isEudicAPPAndroid() {
        var ua = navigator.userAgent.toLowerCase();
        return ua.indexOf("eudic") > -1 && ua.indexOf("android") > -1;
    }

    function isEudicPC() {
        var ua = navigator.userAgent.toLowerCase();
        return ua.indexOf("eudic") > -1 && ua.indexOf("windows") > -1;
    }

    function isGoldenDict() {
        var ua = navigator.userAgent.toLowerCase();
        return ua.indexOf("goldendict") > -1;
    }



    function getOnlineImageUrl(src) {
        var _parts = src.split('/');
        var _name = _parts[_parts.length - 1];
        _parts = _name.split('_');
        _name = _name.replace("fullsize_", "").replace("thumb_", "").replace(".jpg", ".png");
        _imgSrc = _name.substring(0, 1) + '/' + replaceWithUnderscores(_name).substring(0, 3) + '/' + replaceWithUnderscores(_name).substring(0, 5) + '/' + _name;
        return (_parts[0] === "fullsize" ? OALDPE_PREFIX_FULL_IMAGE : OALDPE_PREFIX_THUMB_IMAGE) + _imgSrc;
    }

    function replaceWithUnderscores(str) {
        return str.replace(/\..+/, match => {
            return '_'.repeat(match.length);
        });
    }

    function getOnlineWordPronUrl(src) {
        var parts = src.split('/');
        var name = parts[parts.length - 1];
        return (name.indexOf("_gb_") > -1 ? OALDPE_PREFIX_WORD_UK : OALDPE_PREFIX_WORD_US) + name.substring(0, 1) + '/' + name.substring(0, 3) + '/' + name.substring(0, 5) + '/' + name;
    }

    function toggleSyllable($obj) {
        if ($obj.attr("syllable")) {
            $obj.text($obj.text().indexOf("·") > -1 ? $obj.text().replace(/·/g, "") : $obj.attr("syllable"));
        }
    }

    // the end 

    // region tts 功能
    var ttsConfig = {
        "美音女1": {
            locale: "en-US",
            voice: "en-US-MichelleNeural",
            pitch: "+0Hz",
            rate: "+0%",
            volume: "+0%",
        },
        "美音女2": {
            locale: "en-US",
            voice: "en-US-AriaNeural",
            pitch: "+0Hz",
            rate: "+20%",
            volume: "+0%",
        },
        "美音女3": {
            locale: "en-US",
            voice: "en-US-AnaNeural",
            pitch: "+0Hz",
            rate: "+20%",
            volume: "+0%",
        },
        "美音女4": {
            locale: "en-US",
            voice: "en-US-JennyNeural",
            pitch: "+0Hz",
            rate: "+0%",
            volume: "+0%",
        },
        "美音男1": {
            locale: "en-US",
            voice: "en-US-ChristopherNeural",
            pitch: "+0Hz",
            rate: "+0%",
            volume: "+0%",
        },
        "美音男2": {
            locale: "en-US",
            voice: "en-US-EricNeural",
            pitch: "+0Hz",
            rate: "+0%",
            volume: "+0%",
        },
        "美音男3": {
            locale: "en-US",
            voice: "en-US-GuyNeural",
            pitch: "+0Hz",
            rate: "+0%",
            volume: "+0%",
        },
        "美音男4": {
            locale: "en-US",
            voice: "en-US-RogerNeural",
            pitch: "+0Hz",
            rate: "+0%",
            volume: "+0%",
        },
        "美音男5": {
            locale: "en-US",
            voice: "en-US-SteffanNeural",
            pitch: "+0Hz",
            rate: "+0%",
            volume: "+0%",
        },
        "英音女1": {
            locale: "en-GB",
            voice: "en-GB-SoniaNeural",
            pitch: "+0Hz",
            rate: "+0%",
            volume: "+0%",
        },
        "英音女2": {
            locale: "en-GB",
            voice: "en-GB-MaisieNeural",
            pitch: "+0Hz",
            rate: "+0%",
            volume: "+0%",
        },
        "英音女3": {
            locale: "en-GB",
            voice: "en-GB-LibbyNeural",
            pitch: "+0Hz",
            rate: "+0%",
            volume: "+0%",
        },
        "英音男1": {
            locale: "en-GB",
            voice: "en-GB-RyanNeural",
            pitch: "+0Hz",
            rate: "+0%",
            volume: "+0%",
        },
        "英音男2": {
            locale: "en-GB",
            voice: "en-GB-ThomasNeural",
            pitch: "+0Hz",
            rate: "+0%",
            volume: "+0%",
        },
    }

    var selectedTTS = "美音女1";

    function create_edge_TTS(
        timeout = 10,
        auto_reconnect = true) {

        const TRUSTED_CLIENT_TOKEN = "6A5AA1D4EAFF4E9FB37E23D68491D6F4";
        const VOICES_URL = `https://speech.platform.bing.com/consumer/speech/synthesize/readaloud/voices/list?trustedclienttoken=${TRUSTED_CLIENT_TOKEN}`;
        const SYNTH_URL = `wss://speech.platform.bing.com/consumer/speech/synthesize/readaloud/edge/v1?TrustedClientToken=${TRUSTED_CLIENT_TOKEN}`;
        const BINARY_DELIM = "Path:audio\r\n";
        const VOICE_LANG_REGEX = /\w{2}-\w{2}/;

        let _outputFormat = "audio-24khz-48kbitrate-mono-mp3";
        /* 修改发音人和语言 */
        let _voiceLocale = 'en-US',
            _voice = 'en-US-MichelleNeural',
            // 调整音色
            _pitch = '+0Hz',
            // 调整速度
            _rate = '+20%',
            // 调整音量
            _volume = '+0%';

        const _queue = {
            message: [],
            url_resolve: {},
            url_reject: {},
        };

        let ready = false;

        function _SSMLTemplate(input) {
            return `<speak version="1.0" xmlns="http://www.w3.org/2001/10/synthesis" xmlns:mstts="https://www.w3.org/2001/mstts" xml:lang="${ttsConfig[selectedTTS].voiceLocale}">
                      <voice name="${ttsConfig[selectedTTS].voice}">
                       <prosody pitch="${ttsConfig[selectedTTS].pitch}" rate="${ttsConfig[selectedTTS].rate}" volume="${ttsConfig[selectedTTS].volume}">${input}</prosody>
                      </voice>
                  </speak>`;
        }

        function uuidv4() {
            return ([1e7] + -1e3 + -4e3 + -8e3 + -1e11).replace(/[018]/g, c =>
                (c ^ crypto.getRandomValues(new Uint8Array(1))[0] & 15 >> c / 4).toString(16));
        }

        let socket = null;
        create_new_ws();

        function setFormat(format) {
            if (format)
                _outputFormat = format;

            /**/
            socket.send(`Content-Type:application/json; charset=utf-8\r\nPath:speech.config\r\n\r\n
                          {
                              "context": {
                                  "synthesis": {
                                      "audio": {
                                          "metadataoptions": {
                                              "sentenceBoundaryEnabled": "false",
                                              "wordBoundaryEnabled": "false"
                                          },
                                          "outputFormat": "${_outputFormat}" 
                                      }
                                  }
                              }
                          }
                      `);
        }

        async function createURL(requestId) {
            let index_message = 0;
            for (let message of _queue.message) {
                const isbinary = message instanceof Blob;

                if (!isbinary)
                    continue;

                const data = await message.text();

                //console.log(data); //does the message order change?
                //console.log(await event.data.arrayBuffer());

                const Id = /X-RequestId:(.*?)\r\n/gm.exec(data)[1];

                if (Id !== requestId)
                    continue;

                if (data.charCodeAt(0) === 0x00 && data.charCodeAt(1) === 0x67 && data.charCodeAt(2) === 0x58) {
                    // Last (empty) audio fragment
                    console.log(`Last (empty) audio fragment`)

                    const blob = new Blob(_queue[requestId], {
                        'type': 'audio/mp3'
                    });

                    _queue[requestId] = null; //release memory

                    const url = URL.createObjectURL(blob);
                    console.log(url)

                    //URL.revokeObjectURL(url);
                    _queue.url_resolve[requestId](url);

                    //return url

                } else {
                    const index = data.indexOf(BINARY_DELIM) + BINARY_DELIM.length;

                    const audioData = message.slice(index);
                    _queue[requestId].push(audioData);

                    _queue.message[index_message] = null; //release blob memory
                }

                ++index_message;
            }
        }

        function onopen(event) {
            console.log('open');
            //socket.send('Hello Server!');
            //socket.close()

            setFormat();
            ready = true;
        }

        async function onmessage(event) {
            const isbinary = event.data instanceof Blob;
            // console.log(`Message from server, type: ${typeof (event.data)} Blob: ${isbinary}`);

            _queue.message.push(event.data)

            if (!isbinary) {
                //console.log(event.data);
                const requestId = /X-RequestId:(.*?)\r\n/gm.exec(event.data)[1];

                if (event.data.includes("Path:turn.end")) {
                    // end of turn
                    createURL(requestId);
                }

            } else {
            }
        }

        function onerror(event) {
            ready = false;
            console.log('WebSocket error: ', event);
        }

        function onclose(event) {
            ready = false;
            console.log('WebSocket close: ', event); //may be closed by remote
        }

        function addSocketListeners() {
            socket.addEventListener('open', onopen);
            // Listen for messages
            socket.addEventListener('message', onmessage);

            // Listen for possible errors
            socket.addEventListener('error', onerror);

            // Listen for possible errors
            socket.addEventListener('close', onclose);
        }

        function create_new_ws() {
            //try {
            // Create WebSocket connection.
            socket = new WebSocket(SYNTH_URL);
            addSocketListeners();
        }

        let toStream = function (input) {
            let requestSSML = _SSMLTemplate(input);
            const requestId = uuidv4().replace(/-/g, '');
            // const requestId = uuidv4().replaceAll('-', '');
            const request = `X-RequestId:${requestId}\r\nContent-Type:application/ssml+xml\r\nPath:ssml\r\n\r\n
                      ` + requestSSML.trim();

            _queue[requestId] = [];

            return new Promise((resolve, reject) => {
                _queue.url_resolve[requestId] = resolve,
                    _queue.url_reject[requestId] = reject;

                if (!ready) {
                    if (auto_reconnect) {
                        create_new_ws();
                        socket.addEventListener('open', _ => socket.send(request));

                        setTimeout(_ => {
                            if (!ready)
                                reject('reconnect timeout')
                        }, timeout * 1000);
                    } else
                        reject('socket error or timeout');
                } else {
                    socket.send(request)
                }

            });

        }

        async function play(input, play_count = 1, play_span = 5000) {
            const url = await toStream(input);

            let play_resolve = function () {
            };
            // globalAudio.pause();
            !globalAudio.paused && globalAudio.pause();

            globalAudio.src = url;
            // var audio = new Audio(url);
            console.log('before play' + globalAudio.duration) //NaN
            //let play_count = 3; //repeat times
            globalAudio.onended = (e) => {
                console.log(e);
                if (--play_count > 0) {
                    console.log("play----");
                    setTimeout(_ => globalAudio.play(), play_span);
                } else {
                    //URL.revokeObjectURL(url);
                    play_resolve(url);
                    console.log('play end');
                }
            }

            await globalAudio.play();
            console.log('after play' + globalAudio.duration);

            return new Promise((resolve, reject) => {
                play_resolve = resolve
            });

        }

        return new Promise((resolve, reject) => {
            setTimeout(_ => reject('socket open timeout'), timeout * 1000);
            // Connection opened
            socket.addEventListener('open', function (event) {

                resolve({
                    _: play,
                    toStream,
                    setVoice: (voice, locale) => {
                        _voice = voice;
                        if (!locale) {
                            const voiceLangMatch = VOICE_LANG_REGEX.exec(_voice);
                            if (!voiceLangMatch)
                                throw new Error("Could not infer voiceLocale from voiceName!");
                            _voiceLocale = voiceLangMatch[0];
                        } else {
                            _voiceLocale = locale;
                        }
                    },
                    setFormat,
                    isReady: _ => ready
                })
            });
        });

    }

    var tts;

    async function init() {
        tts = await create_edge_TTS();
    }

    typeof Promise !== "undefined" && init();

    //-------------------------------

    async function speak(chn) {
        try {
            await tts._(chn)
        } catch (e) {
            console.log('catch error:')
            console.log(e)
        }
    }

});



/*
Words used for testing

"wordorigin":               // 词源
"wordfinder":               // 联想词horse
"cult":                     // 文化football
"synonyms":                 // 同义词辨析like, awful
"which_word":               // 词语辨析like, about
"colloc":                   // 词语搭配show(n.1)
"homophone":                // 同音词or
"more_about":               // 词语辨析
"mlt":                      // 同类词语学习a, up, or, be,mere
"wordfamily":               // 词族
"grammar":                  // 语法说明if, like, very
"express":                  // 情景表达like
"langbank":                 // 用语库for, up, like, about
"vocab":                    // 词汇扩充
"british_american":         // 英式 / 美式
"snippet":                  // 牛津搭配词典
"extra_examples":           // 更多例句
"verbforms":                // 动词形式
"more_about":               // 补充说明like
*/