let temporaryVariable_preText = ""; // 上次播报的语音，不充分播报
let temporaryVariable_isAudio = true; // 播放状态，是否开启

// 防抖函数
function debounce(func, wait) {
    let timeout;
    return function (...args) {
        const context = this;
        clearTimeout(timeout);
        timeout = setTimeout(() => func.apply(context, args), wait);
        return () => clearTimeout(timeout); // 返回一个取消函数
    };
}

// 语音播报 播报dom的内容
function speechDomText(event) {
    // console.log("speechDomText", event);
    event.stopPropagation();

    let str = "";

    if (
        event && event.target
    ) {
        let nodeName = event.target.nodeName
        if (nodeName == "BUTTON" || nodeName == "DIV") {
            str = event.target.innerText;
        }
    }

    if (str && str !== "") {
        voiceBroadcast(str);
    }
}

// 使用防抖函数包装 speechDomText
const debouncedSpeechDomText = debounce(speechDomText, 500);

function speechDomTextBarrier(event) {
    // console.log("speechDomTextBarrier", event);
    event.stopPropagation();

    let str = "";

    if (
        event &&
        event.target &&
        (event.target.ariaLabel || event.target.ariaDescription)
    ) {
        str = event.target.ariaLabel || event.target.ariaDescription;
    }

    if (str && str !== "") {
        voiceBroadcast(str);
    }
}

// 使用防抖函数包装 speechDomTextBarrier，增加防抖时间
const debouncedSpeechDomTextBarrier = debounce(speechDomTextBarrier, 2000);

// 游戏专用的语音播报函数，增加更长的防抖时间
function speechDomTextBarrierGame(event) {
    // console.log("speechDomTextBarrierGame", event);
    event.stopPropagation();

    let str = "";

    if (
        event &&
        event.target &&
        (event.target.ariaLabel || event.target.ariaDescription)
    ) {
        str = event.target.ariaLabel || event.target.ariaDescription;
    }

    if (str && str !== "") {
        // 检查虚拟老师是否正在播放语音，如果是则跳过播报
        if (window.virtualTeacherPlaying || (window.virtualTeacher && window.virtualTeacher.isPlaying)) {
            console.log('虚拟老师正在播放语音，跳过游戏名称播报:', str);
            return;
        }
        voiceBroadcast(str);
    }
}

// 使用更长的防抖时间包装游戏语音播报
const debouncedSpeechDomTextBarrierGame = debounce(speechDomTextBarrierGame, 3000);

// 设置是否语音播报
function setIsAudio(event) {
    temporaryVariable_isAudio = !temporaryVariable_isAudio;
    event.target.innerText = temporaryVariable_isAudio ? "📢" : "🔇";
    voiceBroadcast(temporaryVariable_isAudio ? "开启语音播报" : "关闭语音播报");
}

// 调用讯飞接口播报语音
function voiceBroadcast(text) {
    if (temporaryVariable_preText == text || !temporaryVariable_isAudio) {
        return
    }
    
    // 检查虚拟老师是否正在播放语音，如果是则跳过播报
    if (window.virtualTeacherPlaying || (window.virtualTeacher && window.virtualTeacher.isPlaying)) {
        console.log('虚拟老师正在播放语音，跳过无障碍播报:', text);
        return;
    }
    
    temporaryVariable_preText = text;

    const audioPlayer = document.getElementById('audioPlayer');

    const vcn = ["xiaoyan", "aisjiuxu", "aisxping", "aisjinger", "aisbabyxu", "x4_lingxiaoqi_cts", "x4_lingyouyou", "x4_lingfeizhe_zl"];

    $.ajax({
        url: 'http://rgclass.iflysse.com:8200/text2audio',
        type: 'POST',
        contentType: 'application/x-www-form-urlencoded',
        data: {
            text: text,
            vcn: vcn[6],
            speed: 50
        },
        headers: {
            'Cache-Control': 'no-store'
        },
        success: function (data) {

            let timer01 = setTimeout(function () {
                const url = `http://rgclass.iflysse.com:8200${data}`;
                audioPlayer.src = url;
                audioPlayer.load();
                audioPlayer.play();
                clearTimeout(timer01);
                // console.log("text2audio success", url, audioPlayer);
            }, 800);

        },
        error: function (jqXHR, textStatus, errorThrown) {
            console.error('text2audio error:', textStatus, errorThrown);
        }
    });

    let timer02 = setTimeout(function () {
        temporaryVariable_preText = "";
        clearTimeout(timer02);
    }, 5000);
}