// ==UserScript==
// @name         超星MOOC人脸信息采集跳过（updateqrstatus版）
// @namespace    http://tampermonkey.net/
// @version      3.0.0
// @description  新版「人脸信息采集」跳过：读隐藏表单参数 -> POST updateqrstatus 标记已采集，并摘除弹窗/强制播放
// @author       焱炆
// @match        https://mooc1.chaoxing.com/*
// @match        https://mooc1-2.chaoxing.com/*
// @match        https://mooc2-1.chaoxing.com/*
// @match        https://mooc1-1.chaoxing.com/*
// @run-at       document-start
// @grant        unsafeWindow
// @grant        GM_xmlhttpRequest
// @connect      mooc1-api.chaoxing.com
// @connect      pan-yz.chaoxing.com
// @connect      passport2-api.chaoxing.com
// ==/UserScript==

(function () {
    'use strict';

    const log = (m) => console.log('[采集跳过] ' + m);
    const warn = (m) => console.warn('[采集跳过] ' + m);
    const win = (typeof unsafeWindow !== 'undefined') ? unsafeWindow : window;

    // 从主页面隐藏 input 读参数
    function val(id) {
        const el = document.getElementById(id);
        return el ? (el.value || '').trim() : '';
    }

    // 新版视频采集的真实参数名（带 Qr 后缀 / video 前缀）
    function getQRParams() {
        return {
            uuid: val('videouuid'),
            qrcEnc: val('videoqrcEnc'),
            courseId: val('fccourseIdQr'),
            clazzId: val('fcclazzIdQr'),
            chapterId: val('fcchapterIdQr'),
            cpi: val('fccpiQr')
        };
    }

    // 生成随机 objectId（超星只要求非空，服务端不校验真实性）
    function randOid() {
        const chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';
        let s = '';
        for (let i = 0; i < 32; i++) s += chars[Math.floor(Math.random() * chars.length)];
        return s;
    }

    let submitted = new Set(); // 已提交过的 uuid，避免重复打接口

    // 核心：POST updateqrstatus，把当前 uuid 标记为已采集
    function submitPass() {
        const p = getQRParams();
        const uuid = p.uuid, clazzId = p.clazzId, courseId = p.courseId, qrcEnc = p.qrcEnc;
        if (!uuid || !clazzId || !courseId) {
            return false;
        }
        if (submitted.has(uuid)) {
            return true;
        }
        submitted.add(uuid);

        const oid = randOid();
        const failCount = (() => {
            const e = document.querySelector('.faceVideoCheckFailCount');
            return e ? (e.textContent || '').trim() : '0';
        })();

        const data =
            'clazzId=' + encodeURIComponent(clazzId) +
            '&courseId=' + encodeURIComponent(courseId) +
            '&uuid=' + encodeURIComponent(uuid) +
            '&qrcEnc=' + encodeURIComponent(qrcEnc) +
            '&objectId=' + encodeURIComponent(oid) +
            '&failCount=' + encodeURIComponent(failCount) +
            '&compareResult=0';

        log('提交 updateqrstatus: uuid=' + uuid + ' clazzId=' + clazzId + ' courseId=' + courseId);

        GM_xmlhttpRequest({
            method: 'POST',
            url: 'https://mooc1-api.chaoxing.com/qr/updateqrstatus',
            data: data,
            headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
            onload: function (res) {
                log('updateqrstatus 响应: ' + res.status + ' ' + (res.responseText || '').slice(0, 300));
            },
            onerror: function (err) {
                warn('updateqrstatus 请求失败: ' + JSON.stringify(err));
                submitted.delete(uuid); // 失败则允许重试
            }
        });
        return true;
    }

    // 摘除弹窗
    function removeMasks() {
        const selectors = [
            '.chapterVideoFaceQrMaskDiv',
            '.faceCollectQrPop',
            '.faceCollectQrPopVideo',
            '.chapterVideoFaceMaskDiv',
            '.maskDiv1'
        ];
        selectors.forEach((sel) => {
            document.querySelectorAll(sel).forEach((el) => {
                if (el.style.display === 'none' || el.offsetParent === null) return;
                log('移除弹窗: ' + sel);
                el.style.display = 'none';
                el.style.visibility = 'hidden';
                if (el.parentNode) {
                    try { el.parentNode.removeChild(el); } catch (e) {}
                }
            });
        });
    }

    // 强制播放器继续：找到视频元素强行 play
    function forcePlay() {
        try {
            const videos = document.querySelectorAll('video');
            videos.forEach((v) => {
                if (v.paused) {
                    const p = v.play();
                    if (p && p.catch) p.catch(() => {});
                }
            });
            if (videos.length) log('已强制播放 ' + videos.length + ' 个视频');
        } catch (e) {}
        // 超星常用：关闭遮罩后调用自身的 play
        try {
            if (win.player && typeof win.player.play === 'function') {
                win.player.play();
            }
        } catch (e) {}
    }

    let dumped = false;
    function dumpInputs() {
        if (dumped) return;
        dumped = true;
        const p = getQRParams();
        log('新版参数: uuid=' + p.uuid + ' qrcEnc=' + p.qrcEnc + ' courseId=' + p.courseId +
            ' clazzId=' + p.clazzId + ' chapterId=' + p.chapterId + ' cpi=' + p.cpi);
        log('fcqrimg存在=' + !!(document.getElementById('fcqrimg')));
        log('hasQR容器=' + !!(document.querySelector('.faceCollectQrPop, .faceCollectQrPopVideo')));
        log('videoCaptureGetQrStatuse=' + val('videoCaptureGetQrStatuse'));
    }

    function tick() {
        // 判断是否出现采集弹窗（任一特征命中）
        const hasQR = !!(document.getElementById('fcqrimg'));
        const hasMask = document.querySelector('.chapterVideoFaceQrMaskDiv, .faceCollectQrPop, .faceCollectQrPopVideo');

        if (hasQR || hasMask) {
            log('检测到人脸采集弹窗');
            dumpInputs();
            removeMasks();
            forcePlay();
        }
    }

    // 拦截 getqrstatus 的 fetch/XHR：直接伪造「已采集成功」响应
    // 真实成功结构（抓包所得）：{"code":"0","failCount":"0","videoFaceCaptureSuccessEnc":"...","compareResult":"0","status":2}
    let transportHooked = false;
    const FAKE_SUCCESS = JSON.stringify({
        code: '0',
        failCount: '0',
        videoFaceCaptureSuccessEnc: '024800adaf452a7daa71a9c57bb1eb14',
        compareResult: '0',
        status: 2
    });

    function observeGetQrStatus() {
        if (transportHooked) return;
        transportHooked = true;

        // fetch
        const origFetch = win.fetch;
        if (origFetch && !win.__qrFetchHooked) {
            win.__qrFetchHooked = true;
            win.fetch = function (url, opts) {
                const u = (typeof url === 'string') ? url : (url && url.url) || '';
                if (u.indexOf('getqrstatus') !== -1) {
                    log('伪造 getqrstatus 响应 -> status=2 (已采集)');
                    return Promise.resolve(new Response(FAKE_SUCCESS, {
                        status: 200,
                        headers: { 'Content-Type': 'application/json' }
                    }));
                }
                return origFetch.apply(win, arguments);
            };
        }

        // XMLHttpRequest
        const origXHR = win.XMLHttpRequest;
        if (origXHR && !win.__qrXHRHooked) {
            win.__qrXHRHooked = true;
            win.XMLHttpRequest = function () {
                const xhr = new origXHR();
                const origOpen = xhr.open;
                xhr.open = function (method, url) {
                    xhr.__isQR = (url && url.indexOf('getqrstatus') !== -1);
                    return origOpen.apply(xhr, arguments);
                };
                const origSend = xhr.send;
                xhr.send = function () {
                    if (xhr.__isQR) {
                        log('伪造 getqrstatus 响应 -> status=2 (已采集)');
                        Object.defineProperty(xhr, 'readyState', { value: 4 });
                        Object.defineProperty(xhr, 'status', { value: 200 });
                        Object.defineProperty(xhr, 'responseText', { value: FAKE_SUCCESS });
                        Object.defineProperty(xhr, 'response', { value: FAKE_SUCCESS });
                        try {
                            if (xhr.onreadystatechange) xhr.onreadystatechange();
                            if (xhr.onload) xhr.onload();
                        } catch (e) {}
                        return;
                    }
                    return origSend.apply(xhr, arguments);
                };
                return xhr;
            };
            try { win.XMLHttpRequest.prototype = origXHR.prototype; } catch (e) {}
        }
        log('已接管 getqrstatus，将始终返回已采集(status=2)');
    }

    function start() {
        log('启动完成，等待采集弹窗');
        // 提前接管 getqrstatus，轮询一启动就返回已采集
        observeGetQrStatus();
        setInterval(tick, 1500);
    }

    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', start);
    } else {
        start();
    }
})();