// ==UserScript==
// @name         超星学习通助手 (合并版)
// @version 1.2.1
// @description  自定义AI + 本地AI + 题库 的合并版本
// @namespace    https://github.com/chaoxing-assistant
// @homepage     https://scriptcat.org/zh-CN/script-show-page/6637
// @supportURL   https://scriptcat.org/zh-CN/script-show-page/6637
// @match        *://*.chaoxing.com/*
// @match        *://*.edu.cn/*
// @connect      127.0.0.1
// @connect      *

// @run-at       document-end
// @grant        unsafeWindow
// @grant        GM_xmlhttpRequest
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        GM_deleteValue
// @grant        GM_info
// @grant        GM_getResourceText
// @require      https://cdn.bootcdn.net/ajax/libs/jquery/3.7.1/jquery.min.js
// @require      https://gptjs.808860.xyz/libs/TyprMd5.js
// @require      https://cdnjs.cloudflare.com/ajax/libs/lz-string/1.5.0/lz-string.min.js
// @resource     Table https://gptjs.808860.xyz/libs/table.json
// @icon         data:image/svg+xml;base64,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
// ==/UserScript==

(function() {
'use strict';

var SCRIPT_VERSION = '1.2.1';

/* ========================= 设置 ========================= */
var setting = {
    showBox: 1, task: 0, video: 1, audio: 1, rate: 1, review: 0,
    work: 1, time: 2000, sub: 0, force: 0,
    examTurn: 0, examTurnTime: 0, goodStudent: 0, alterTitle: 1,
    apiUrl: 'http://127.0.0.1:11434/api/generate',
    apiModel: 'qwen3.5:0.8b',
    apiKey: ''
};

var _w = unsafeWindow, _l = location, _d = _w.document;
var $ = _w.jQuery || top.jQuery;
var UE = _w.UE;
var md5 = md5 || window.md5;
var _mlist, _defaults, _domList, $subBtn, $saveBtn, $frame_c, $okBtn;


var _currentQuestionMeta = null;
var _nextAiAllowedAt = 0;
/* ========================= 存储工具（统一键名） ========================= */
// 修复：gmGet/gmSet 同时检查 cx.* 和 GPTJsSetting.* 两套键名，
// 确保合并版（cx.*）与原版UI面板（GPTJsSetting.*）的读写一致
function gmGet(key) {
    try { var v = GM_getValue(key); if (v !== undefined && v !== null) return String(v); } catch(e) {}
    try { var v = localStorage.getItem('cx.' + key); if (v !== null) return v; } catch(e) {}
    try { var v = localStorage.getItem('GPTJsSetting.' + key); if (v !== null) return v; } catch(e) {}
    return null;
}
function gmSet(key, val) {
    try { GM_setValue(key, val); } catch(e) {}
    try { localStorage.setItem('cx.' + key, val); } catch(e) {}
    try { localStorage.setItem('GPTJsSetting.' + key, val); } catch(e) {}
}
function gmRemove(key) {
    try { GM_deleteValue(key); } catch(e) {}
    try { localStorage.removeItem('cx.' + key); } catch(e) {}
    try { localStorage.removeItem('GPTJsSetting.' + key); } catch(e) {}
}

function markAnswered(qIdx) { try { var list = JSON.parse(localStorage.getItem('cx.done') || '[]'); if (list.indexOf(qIdx) < 0) { list.push(qIdx); localStorage.setItem('cx.done', JSON.stringify(list)); } } catch(e) {} }
function isAnswered(qIdx) { try { return JSON.parse(localStorage.getItem('cx.done') || '[]').indexOf(qIdx) >= 0; } catch(e) { return false; } }


if (gmGet('time') !== null) { var _t = parseFloat(gmGet('time')); if (isFinite(_t) && _t >= 0) setting.time = _t * 1000; }


/* ========================= 工具函数 ========================= */
function getCk(name) { var m = document.cookie.match(new RegExp('[;\\s+]?' + name + '=([^;]*)')); return m ? m.pop() : null; }
function getStr(str, start, end) { var r = str.match(new RegExp(start + '(.*?)' + end)); return r ? r[1] : null; }
function tidyStr(s) { if (!s) return null; return s.replace(/<(?!img).*?>/g, '').replace(/^【.*?】\s*/, '').replace(/\s*（\d+\.\d+分）$/, '').replace(/&nbsp;/g, '').trim(); }
function tidyQuestion(s) { if (!s) return null; return s.replace(/<(?!img).*?>/g, '').replace(/^【.*?】\s*/, '').replace(/\s*（\d+\.\d+分）$/, '').replace(/^\d+[.、]/, '').replace(/&nbsp;/g, '').trim(); }
function parseUrlParams() { var q = window.location.search.substring(1), vars = q.split('&'), p = {}; for (var i = 0; i < vars.length; i++) { var pair = vars[i].split('='); p[pair[0]] = pair[1]; } return p; }
function waitForJQueryElement(selector) { return new Promise(function (resolve) { var iv = setInterval(function () { if ($(selector).length > 0) { clearInterval(iv); resolve(); } }, 500); }); }

function updateLocalStorage(event) {
    var checkbox = event.target;
    localStorage.setItem(checkbox.id, checkbox.checked);
}

function isFuzzyMatchEnabled() {
    var stored = localStorage.getItem('GPTJsSetting.fuzzyMatch');
    if (stored !== null) return stored === 'true';
    return true;
}

function checkBrowser() {
    var userAgent = navigator.userAgent;
    if (userAgent.indexOf('Chrome') == -1 || GM_info.scriptHandler != 'ScriptCat') {
        // 非推荐环境，但不弹出警告
    }
}
function isPaused() { return gmGet('isPaused') === 'true'; }
function isRedoMode() {
    var stored = localStorage.getItem('GPTJsSetting.redo');
    if (stored !== null) return stored === 'true';
    return !!setting.redo;
}

function getTaskParams() {
    try { var scripts = _d.scripts; for (var i = 0; i < scripts.length; i++) { var html = scripts[i].innerHTML; if (html.indexOf('mArg = "";') !== -1 && html.indexOf('==UserScript==') === -1) { return getStr(html.replace(/\s/g, ''), 'try{mArg=', ';}catch'); } } } catch (_) {} return null;
}

/* ========================= 日志 ========================= */
var _colorMap = { red: '#dc2626', green: '#059669', blue: '#2563eb', yellow: '#ca8a04', orange: '#ea580c', purple: '#7c3aed', pink: '#db2777', gray: '#64748b' };
function logger(str, color) {
    var t = new Date().toLocaleTimeString();
    var c = _colorMap[color] || color || '#334155';
    var $logContainer = $('#sa-log');
    if (!$logContainer.length) $logContainer = $('#ne-21log', window.parent.document);
    if (!$logContainer.length) $logContainer = $('#sa-log', window.parent.document);
    if (!$logContainer.length) return;
    var p = $('<p><span class="sa-time">[' + t + ']</span><span class="sa-msg" style="color:' + c + ';">' + str + '</span></p>');
    $logContainer.prepend(p);
    return p;
}
function updateLogEntry(p, str, color) { if (!p || !p.length) return; var c = _colorMap[color] || color || '#334155'; p.find('.sa-msg').css('color', c).html(str); }

/* ========================= F9 切换 ========================= */
function toggleBox() {
    var box = $('#sa-box');
    if (!box.length) try { box = $('#ne-21box', top.document); } catch (_) {}
    if (!box.length) return;
    if (gmGet('showBoxHide') === 'hide') { box.css('display', ''); gmSet('showBoxHide', 'show'); try { logger('F9 显示面板'); } catch (_) {} }
    else { box.css('display', 'none'); gmSet('showBoxHide', 'hide'); }
}
$(document).on('keydown.saf9', function (e) { if (e.keyCode === 120) toggleBox(); });
try { if (top !== window) $(top.document).on('keydown.saf9', function (e) { if (e.keyCode === 120) toggleBox(); }); } catch (_) {}

/* ========================= API 调用 ========================= */
function getApiConfig() { return { url: gmGet('apiUrl') || setting.apiUrl, model: gmGet('apiModel') || setting.apiModel, key: gmGet('apiKey') || setting.apiKey || '' }; }

function callApi(payload) {
    return new Promise(function (resolve, reject) {
        var cfg = getApiConfig();
        var isOllama = /\/api\/(generate|chat)/.test(cfg.url);
        var isOpenAI = /\/(v1\/)?chat\/completions/.test(cfg.url);
        var headers = { 'Content-Type': 'application/json' };
        if (cfg.key) headers['Authorization'] = 'Bearer ' + cfg.key;
        var body;
        if (isOllama) { body = JSON.stringify({ model: cfg.model, prompt: payload, stream: false }); }
        else if (isOpenAI) { body = JSON.stringify({ model: cfg.model, messages: [{ role: 'system', content: '你是一个学习助手，直接根据题目返回答案。单选题只返回选项文字。多选题用|分割。判断题只返回正确或错误。填空题用|分割。简答题50字左右。' }, { role: 'user', content: payload }], stream: false }); }
        else { body = JSON.stringify({ model: cfg.model, messages: [{ role: 'user', content: payload }], stream: false }); }
        GM_xmlhttpRequest({
            method: 'POST', url: cfg.url, headers: headers, data: body, timeout: 120000,
            onload: function (xhr) {
                if (xhr.status == 200) {
                    var txt = xhr.responseText;
                    try {
                        var obj = JSON.parse(txt);
                        var answer = '';
                        if (isOllama) answer = obj.response || obj.message || obj.text || '';
                        else if (isOpenAI) answer = (obj.choices && obj.choices[0] && obj.choices[0].message && obj.choices[0].message.content) || '';
                        else answer = obj.answer || obj.response || obj.text || txt;
                        if (typeof answer !== 'string') answer = String(answer);
                        answer = answer.replace(/^[A-Z]\s*\n\s*/, '').trim();
                        if (answer) { resolve(answer); return; }
                    } catch (e) { var raw = txt.trim(); if (raw) { resolve(raw); return; } }
                    reject({ c: 0, msg: '返回空 | ' + cfg.url });
                } else { reject({ c: xhr.status, msg: 'HTTP ' + xhr.status + ' | ' + cfg.url }); }
            },
            onerror: function () { reject({ c: -1, msg: '网络错误 | ' + cfg.url }); },
            ontimeout: function () { reject({ c: -2, msg: '超时 | ' + cfg.url }); }
        });
    });
}

/* ========================= 相似度匹配 ========================= */
function stringSimilarity(s1, s2) {
    if (!s1 && !s2) return 1; if (!s1 || !s2) return 0;
    s1 = s1.toLowerCase().trim(); s2 = s2.toLowerCase().trim();
    if (s1 === s2) return 1;
    var len1 = s1.length, len2 = s2.length;
    if (len1 === 0 || len2 === 0) return 0;
    var prev = [], curr = [];
    for (var j = 0; j <= len2; j++) prev[j] = j;
    for (var i = 1; i <= len1; i++) {
        curr[0] = i;
        for (var j = 1; j <= len2; j++) {
            if (s1[i-1] === s2[j-1]) { curr[j] = prev[j-1]; } else { curr[j] = 1 + Math.min(prev[j], curr[j-1], prev[j-1]); }
        }
        var tmp = prev; prev = curr; curr = tmp;
    }
    return 1 - prev[len2] / Math.max(len1, len2);
}
function findBestFuzzyMatch(options, answer, threshold) {
    if (!answer || !options || !options.length) return -1;
    threshold = threshold !== undefined ? threshold : 0.5;
    var bestIdx = -1, bestScore = 0;
    for (var i = 0; i < options.length; i++) { var score = stringSimilarity(options[i], answer); if (score > bestScore) { bestScore = score; bestIdx = i; } }
    return bestScore >= threshold ? bestIdx : -1;
}
function findFuzzyMatchMultiple(options, answer, threshold) {
    if (!answer || !options || !options.length) return [];
    threshold = threshold !== undefined ? threshold : 0.5;
    var parts = answer.split('|'), matched = [];
    for (var p = 0; p < parts.length; p++) {
        var part = parts[p].trim(); if (!part) continue;
        var bestIdx = -1, bestScore = 0;
        for (var i = 0; i < options.length; i++) { var score = stringSimilarity(options[i], part); if (score > bestScore) { bestScore = score; bestIdx = i; } }
        if (bestScore >= threshold && matched.indexOf(bestIdx) === -1) matched.push(bestIdx);
    }
    return matched;
}

/* ========================= 判断题解析 ========================= */
function parseJudgeAnswer(agrs) {
    if (!agrs) return null;
    var s = agrs.replace(/[。，.,!！\s]/g, '').toLowerCase();
    var tw = ['正确','是','对','√','t','true','ri','right','yes'];
    var fw = ['错误','否','错','×','f','false','wr','wrong','no'];
    for (var i = 0; i < tw.length; i++) { if (s === tw[i]) return 'true'; }
    for (var i = 0; i < fw.length; i++) { if (s === fw[i]) return 'false'; }
    for (var i = 0; i < fw.length; i++) { if (s.indexOf(fw[i]) !== -1) return 'false'; }
    for (var i = 0; i < tw.length; i++) { if (s.indexOf(tw[i]) !== -1) return 'true'; }
    return null;
}
function findJudgeOptionIndex(options, isTrue) {
    var words = isTrue ? ['正确','是','对','√','T','ri'] : ['错误','否','错','×','F','wr'];
    for (var i = 0; i < options.length; i++) { for (var j = 0; j < words.length; j++) { if (options[i].indexOf(words[j]) !== -1) return i; } }
    return -1;
}

function findAnswerTextareas(container) {
    if (!container || !container.length) return $();
    var eles = container.find('textarea[name^="answerEditor"]');
    if (eles.length > 0) return eles;
    eles = container.find('.subEditor textarea, .Answer .divText textarea, .stem_answer textarea, .edui-editor textarea');
    if (eles.length > 0) return eles;
    return container.find('textarea');
}

var _typeNames = {0:'单选题',1:'多选题',2:'填空题',3:'判断题',4:'简答题',5:'写作题',6:'翻译题'};
var _typeMap = {单选题:0,单项选择题:0,单选:0,选择题:0,多选题:1,多项选择题:1,多选:1,填空题:2,填空:2,判断题:3,是非题:3,判断:3,简答题:4,简答:4,问答题:4,名词解释:4,论述题:4,论述:4,计算题:4,计算:4,分录题:4,资料题:4,作图题:4,其他:4,其它:4,阅读理解:4,阅读:4,阅读题:4,理解题:4,完形填空:4,完形:4,综合题:4,写作题:5,翻译题:6};

/* ========================= Prompt 构建 ========================= */
function buildPrompt(opts) {
    opts = opts || {};
    var q = opts.question != null ? String(opts.question) : '';
    var obj = {};
    if (opts.type) obj.type = String(opts.type);
    if (opts.answer_format) obj.answer_format = String(opts.answer_format);
    obj.question = q;
    if (Array.isArray(opts.options) && opts.options.length > 0) { obj.options = opts.options.map(function (s) { return String(s == null ? '' : s).trim(); }); }
    var payload = JSON.stringify(obj, null, 2);
    var display = q;
    if (obj.options && obj.options.length) display += '\n' + obj.options.join(' | ');
    return { payload: payload, display: display };
}

/* ========================= 本地题库 ========================= */
function getBank() { try { return JSON.parse(gmGet('questionBank') || '{}'); } catch (e) { return {}; } }
function saveBank(bank) { try { gmSet('questionBank', JSON.stringify(bank)); } catch (e) {} }
function extractQuestionText(payloadStr) { try { var obj = JSON.parse(payloadStr); return { text: obj.question || '', options: obj.options || [] }; } catch (e) { return { text: '', options: [] }; } }

/* ========================= 获取答案 ========================= */
function getAnswer(type, question, retryCount) {
    retryCount = retryCount || 0;
    var payload, display;
    if (question && typeof question === 'object' && question.payload != null) { payload = String(question.payload); display = question.display != null ? String(question.display) : payload; }
    else { payload = question == null ? '' : String(question); display = payload; }

    var useBank = gmGet('useBank') !== 'false';
    if (useBank) {
        var qi = extractQuestionText(payload);
        var qText = qi.text || display || '';
        if (qText) {
            var bankKey = (typeof md5 === 'function') ? md5(qText) : qText;
            var bank = getBank();
            var entry = bank[bankKey];
            if (entry && entry.answer) {
                var match = true;
                if (entry.options && entry.options.length > 0 && qi.options && qi.options.length > 0 && JSON.stringify(entry.options) !== JSON.stringify(qi.options)) match = false;
                if (match) {
                    if (_currentQuestionMeta && entry.type) _currentQuestionMeta.typeName = entry.type;
                    var pref = '';
                    if (_currentQuestionMeta) { pref = '第' + ((_currentQuestionMeta.index != null ? _currentQuestionMeta.index : -1) + 1); if (_currentQuestionMeta.total) pref += '/' + _currentQuestionMeta.total; pref += '题 [' + (_currentQuestionMeta.typeName || '未知') + '] '; }
                    logger(pref + '本地题库命中: ' + entry.answer, 'green');
                    return Promise.resolve(entry.answer);
                }
            }
        }
    }

    var prefix = '';
    if (_currentQuestionMeta) { prefix = '第' + ((_currentQuestionMeta.index != null ? _currentQuestionMeta.index : -1) + 1); if (_currentQuestionMeta.total) prefix += '/' + _currentQuestionMeta.total; prefix += '题 [' + (_currentQuestionMeta.typeName || '未知') + '] '; }
    logger(prefix + '题目:' + display, 'pink');

    var thinkHtml = '<span class="sa-spinner"></span>AI 思考中' + (retryCount > 0 ? ' (第' + (retryCount+1) + '次)' : '');
    var thinkLog = logger(thinkHtml, 'gray');

    return new Promise(function (resolve, reject) {
        var requestCompleted = false, longWaitTimer = null;
        var interval = Math.min(60000, setting.time !== undefined ? setting.time : 2500);
        var now = Date.now();
        var wait = Math.max(0, _nextAiAllowedAt - now);
        _nextAiAllowedAt = Math.max(now, _nextAiAllowedAt) + interval;
        if (wait > 0) updateLogEntry(thinkLog, '等待 ' + Math.round(wait/1000) + 's 后发起请求...', 'gray');

        longWaitTimer = setTimeout(function () {
            if (!requestCompleted) { requestCompleted = true; updateLogEntry(thinkLog, '超时重试... (第' + (retryCount+1) + '次)', 'orange'); getAnswer(type, question, retryCount + 1).then(resolve).catch(reject); }
        }, 300000 + wait);

        setTimeout(function () {
            if (requestCompleted) return;
            if (wait > 0) updateLogEntry(thinkLog, 'AI 思考中... (第' + (retryCount+1) + '次)', 'gray');
            callApi(payload).then(function (answer) {
                if (requestCompleted) return;
                requestCompleted = true; clearTimeout(longWaitTimer);
                if (useBank) {
                    var qi2 = extractQuestionText(payload);
                    var qText2 = qi2.text || display || '';
                    if (qText2) {
                        var c = answer.replace(/^[A-Z]\s*\n\s*/, '').trim();
                        var tName = _typeNames[type] || (_currentQuestionMeta ? _currentQuestionMeta.typeName : '') || '';
                        if (!tName && qi2.options) { if (qi2.options.length === 2) tName = '判断题'; else if (qi2.options.length > 2) tName = '多选题'; else tName = '单选题'; }
                        var k = (typeof md5 === 'function') ? md5(qText2) : qText2;
                        var b = getBank();
                        if (!b[k]) { b[k] = {text:qText2,options:qi2.options,answer:c,type:tName,savedAt:Date.now()}; saveBank(b); }
                    }
                }
                updateLogEntry(thinkLog, '答案: ' + answer, 'purple');
                resolve(answer.replace(/^[A-Z]\s*\n\s*/, '').trim());
            }).catch(function (err) {
                if (requestCompleted) return;
                requestCompleted = true; clearTimeout(longWaitTimer);
                var msg = (err && err.msg) ? err.msg : 'API 调用失败';
                updateLogEntry(thinkLog, msg, 'red');
                gmSet('sub', 'false');
                reject({ c: err ? err.c || 0 : 0 });
            });
        }, wait);
    });
}

/* ========================= 防休眠 ========================= */
// Web Audio 静音振荡器（缓解浏览器对隐藏标签页的节流）
var _ne21AntiSleepStarted = false;
function setupAntiSleep() {
    if (_ne21AntiSleepStarted) return;
    var AC = window.AudioContext || window.webkitAudioContext;
    if (!AC) return;
    function tryStart() {
        if (_ne21AntiSleepStarted) return;
        try {
            var ac = new AC();
            var osc = ac.createOscillator();
            var gain = ac.createGain();
            gain.gain.value = 0;
            osc.connect(gain);
            gain.connect(ac.destination);
            osc.start();
            _ne21AntiSleepStarted = true;
            document.addEventListener('visibilitychange', function () {
                try { if (ac.state === 'suspended') ac.resume(); } catch (_) {}
            });
        } catch (_) {}
    }
    tryStart();
    if (!_ne21AntiSleepStarted) {
        var onUserGesture = function () {
            tryStart();
            if (_ne21AntiSleepStarted) {
                document.removeEventListener('click', onUserGesture, true);
                document.removeEventListener('keydown', onUserGesture, true);
                document.removeEventListener('touchstart', onUserGesture, true);
            }
        };
        document.addEventListener('click', onUserGesture, true);
        document.addEventListener('keydown', onUserGesture, true);
        document.addEventListener('touchstart', onUserGesture, true);
    }
}
function setupAutoRefresh() {
    var stored = localStorage.getItem('GPTJsSetting.autoRefresh');
    var enabled = stored !== null ? (stored === 'true') : false;
    if (!enabled) return;
    var minutes = parseInt(localStorage.getItem('GPTJsSetting.autoRefreshMinutes'), 10);
    if (!isFinite(minutes) || minutes < 5) minutes = 30;
    setTimeout(function () {
        logger('已达到自动刷新时间（' + minutes + '分钟），3 秒后刷新页面...', 'orange');
        setTimeout(function () { try { window.location.reload(); } catch (_) {} }, 3000);
    }, minutes * 60 * 1000);
}

/* ========================= 课程导航 ========================= */
function refreshCourseList() {
    var p = parseUrlParams();
    return new Promise(function (resolve) {
        $.ajax({ url: _l.protocol + '//' + _l.host + '/mycourse/studentstudycourselist?courseId=' + p['courseid'] + '&chapterId=' + p['knowledgeid'] + '&clazzid=' + p['clazzid'] + '&mooc2=1', type: 'GET', dataType: 'html', success: function (res) { resolve(res); } });
    });
}
function clickNextPageBtn() { var btn = top.document.querySelector('#mainid > .prev_next.next'); if (btn) { btn.click(); return true; } return false; }
function clickNextChapterBtn() { var btn = top.document.querySelector('#mainid > .prev_next.next'); if (btn) { btn.click(); return true; } var fb = top.document.querySelector('#prevNextFocusNext'); if (fb) { fb.click(); return true; } return false; }
function detectSubTabPosition() {
    try {
        var selectors = ['#prev_tab > li', '.prev_ul > li', '#prevTabBox > li'];
        for (var i = 0; i < selectors.length; i++) {
            var nodes = top.document.querySelectorAll(selectors[i]);
            if (!nodes || nodes.length === 0) continue;
            var tabs = Array.prototype.slice.call(nodes);
            var activeIdx = -1;
            for (var j = 0; j < tabs.length; j++) { if (tabs[j].classList && tabs[j].classList.contains('active')) { activeIdx = j; break; } }
            if (activeIdx === -1) continue;
            return { activeIndex: activeIdx, total: tabs.length, hasNext: activeIdx < tabs.length - 1 };
        }
        var currents = top.document.querySelector('span.currents');
        if (currents) { var sib = currents.nextElementSibling; while (sib) { if (sib.tagName === 'SPAN') return { activeIndex: 0, total: 2, hasNext: true }; sib = sib.nextElementSibling; } }
    } catch (_) {}
    return null;
}
function toNext() {
    if (isPaused()) { setTimeout(toNext, 3000); return; }

    refreshCourseList().then(function (res) {
        var sub = detectSubTabPosition();
        if (sub && sub.hasNext) { logger('本课时还有下一页 (' + (sub.activeIndex+1) + '/' + sub.total + ')', 'blue'); setTimeout(function () { if (!clickNextPageBtn()) clickNextChapterBtn(); }, 5000); return; }
        if (setting.review || !setting.work) { logger('切换到下一章节', 'blue'); setTimeout(function () { clickNextChapterBtn(); }, 5000); return; }
        var list = [];
        $(res).find('li').each(function () { var curid = $(this).find('.posCatalog_select').attr('id'), status = $(this).find('.prevHoverTips').text(), name = $(this).find('.posCatalog_name').attr('title'); if (curid && curid.indexOf('cur') !== -1) list.push({curid:curid,status:status,name:name}); });
        var curId = $('#coursetree', window.parent.document).find('.posCatalog_active').attr('id');
        var idx = list.findIndex(function (item) { return item.curid == curId; });
        for (idx; idx < list.length - 1; idx++) {
            if (list[idx].status.indexOf('待完成') !== -1) { var sub2 = detectSubTabPosition(); if (sub2 && sub2.hasNext) { setTimeout(function () { if (!clickNextPageBtn()) clickNextChapterBtn(); }, 5000); return; } }
            var next = list[idx + 1];
            if (next.status.indexOf('待完成') !== -1) { setTimeout(function () { clickNextChapterBtn(); }, 5000); return; }
            else if (next.status.indexOf('闯关') !== -1) { logger('闯关模式，请手动完成', 'red'); return; }
            else if (next.status.indexOf('开放') !== -1) { logger('章节未开放', 'red'); return; }
        }
        logger('此课程处理完毕', 'green');
    });
}

/* ========================= 任务调度 ========================= */
function switchMission() { _mlist.splice(0, 1); _domList.splice(0, 1); setTimeout(missonStart, 5000); }

function missonStart() {
    if (isPaused()) { setTimeout(missonStart, 3000); return; }
    if (_mlist.length <= 0) { logger('所有任务处理完毕', 'green'); return toNext(); }
    var type = _mlist[0]['type'], dom = _domList[0], task = _mlist[0];
    if (type == undefined) type = _mlist[0]['property']['module'];
    switch (type) {
        case 'video': { var mod = _mlist[0]['property']['module']; if (mod === 'insertvideo' || mod === 'insertaudio') { logger('处理' + (mod === 'insertaudio' ? '音频' : '视频'), 'purple'); missonVideo(dom, task); } else { logger('未知类型跳过', 'red'); switchMission(); } break; }
        case 'workid': logger('处理测验', 'purple'); missonWork(dom, task); break;
        case 'document': logger('处理文档', 'purple'); missonDoucument(dom, task); break;
        case 'read': logger('处理阅读', 'purple'); missonRead(dom, task); break;
        case 'insertbook': logger('处理读书', 'purple'); missonBook(dom, task); break;
        default: { var g = ['insertimage','insertanswerquestion','insertshare','insertquestion','insertdiscuss','insertsubject']; if (g.indexOf(type) !== -1) logger('跳过' + type, 'red'); else logger('不支持:' + type + '，跳过', 'red'); switchMission(); }
    }
}

/* ========================= 倍速 ========================= */
function getRate() { var stored = gmGet('rate'); var n = stored !== null ? parseFloat(stored) : (setting.rate || 1); if (!isFinite(n) || n <= 0) n = 1; if (n > 16) n = 16; return n; }
function isPlaybackRateDisabled(doc) { try { return doc.querySelectorAll('.vjs-playback-rate .vjs-menu-content .vjs-menu-item').length === 0; } catch (_) { return false; } }
function hookMediaRate(media, rate) {
    try { media.playbackRate = rate; } catch (_) {}
    try { Object.defineProperty(media, 'playbackRate', { configurable: true, get: function () { return rate; }, set: function () {} }); } catch (_) { try { media.addEventListener('ratechange', function () { if (media.playbackRate !== rate) try { media.playbackRate = rate; } catch (__) {} }); } catch (___) {} }
}

/* ========================= 视频/音频处理 ========================= */
function missonVideo(dom, obj) {
    var prop = obj.property, name = prop.name, isAudio = prop.module === 'insertaudio', label = isAudio ? '音频' : '视频';
    if (isAudio ? !setting.audio : !setting.video) { logger('不处理' + label + '任务', 'red'); return setTimeout(switchMission, 3000); }
    if (!setting.review && obj.isPassed === true && !isRedoMode()) { logger(label + '已完成', 'green'); return switchMission(); }
    var target = dom.length > 0 ? dom[0] : null;
    if (!target) { logger('未找到iframe，3秒重试', 'orange'); return setTimeout(function () { missonVideo(dom, obj); }, 3000); }
    logger('处理' + label + '：' + name);
    var executed = false, doc = target.contentDocument || target.contentWindow.document, iv = setInterval(function () {
        if (isPaused()) return;
        var media = doc.querySelector('video'); if (!media) { media = doc.querySelector('audio'); }
        if (media && !executed) {
            executed = true; clearInterval(iv);
            var userRate = getRate(), rateDisabled = !isAudio && isPlaybackRateDisabled(doc), finalRate = rateDisabled ? 1 : userRate;
            logger(name + ' 播放 (' + finalRate + 'x)', 'green');
            media.pause(); media.muted = true; hookMediaRate(media, finalRate); media.play();
            var resume = function () { if (isPaused()) return; if (media.paused) media.play(); };
            media.addEventListener('pause', resume);
            var restored = finalRate <= 1;
            if (!restored) { var onUpdate = function () { if (!restored && isFinite(media.duration) && media.duration - media.currentTime < 10) { restored = true; try { delete media.playbackRate; } catch (_) {} hookMediaRate(media, 1); media.removeEventListener('timeupdate', onUpdate); } }; media.addEventListener('timeupdate', onUpdate); }
            media.addEventListener('ended', function () { logger(name + ' 播放完成', 'green'); media.removeEventListener('pause', resume); setTimeout(switchMission, 1000); });
        }
    }, 2500);
}

/* ========================= 文档/阅读/读书 ========================= */
function missonBook(dom, obj) { if (isPaused()) { setTimeout(function () { missonBook(dom, obj); }, 3000); return; } if (obj.job === undefined && !isRedoMode()) { logger('读书已完成', 'green'); return switchMission(); } $.ajax({ url: _l.protocol + '//' + _l.host + '/ananas/job?jobid=' + obj.property.jobid + '&knowledgeid=' + _defaults.knowledgeid + '&courseid=' + _defaults.courseid + '&clazzid=' + _defaults.clazzId + '&jtoken=' + obj.jtoken + '&_dc=' + Date.now(), method: 'GET', success: function (res) { logger('读书: ' + (res.status ? res.msg : '异常'), res.status ? 'green' : 'red'); switchMission(); } }); }
function missonDoucument(dom, obj) { if (isPaused()) { setTimeout(function () { missonDoucument(dom, obj); }, 3000); return; } if (obj.job === undefined && !isRedoMode()) { logger('文档已完成', 'green'); return switchMission(); } $.ajax({ url: _l.protocol + '//' + _l.host + '/ananas/job/document?jobid=' + obj.property.jobid + '&knowledgeid=' + _defaults.knowledgeid + '&courseid=' + _defaults.courseid + '&clazzid=' + _defaults.clazzId + '&jtoken=' + obj.jtoken + '&_dc=' + Date.now(), method: 'GET', success: function (res) { logger('文档: ' + (res.status ? res.msg : '异常'), res.status ? 'green' : 'red'); switchMission(); } }); }
function missonRead(dom, obj) { if (isPaused()) { setTimeout(function () { missonRead(dom, obj); }, 3000); return; } if (obj.job === undefined && !isRedoMode()) { logger('阅读已完成', 'green'); return switchMission(); } $.ajax({ url: _l.protocol + '//' + _l.host + '/ananas/job/readv2?jobid=' + obj.property.jobid + '&knowledgeid=' + _defaults.knowledgeid + '&courseid=' + _defaults.courseid + '&clazzid=' + _defaults.clazzId + '&jtoken=' + obj.jtoken + '&_dc=' + Date.now(), method: 'GET', success: function (res) { logger('阅读: ' + (res.status ? res.msg : '异常'), res.status ? 'green' : 'red'); switchMission(); } }); }

/* ========================= 测验处理（手机版） ========================= */
function missonWork(dom, obj) {
    if (!setting.work) {
        logger('用户设置不自动处理测验，准备处理下一个任务', 'green')
        switchMission()
        return
    }
    var isDo = false;
    if (setting.task) {
        logger("当前只处理任务点任务", 'red')
        isDo = obj.jobid != undefined
    } else {
        logger("当前默认处理所有任务（包括非任务点任务）", 'red')
        isDo = true
    }
    if (!isDo) {
        logger('用户设置只处理属于任务点的任务，准备处理下一个任务', 'green')
        switchMission()
        return
    }
    if (obj.jobid !== undefined) {
        var phoneWeb = _l.protocol + '//' + _l.host + '/work/phone/work?workId=' + obj.jobid.replace('work-', '') + '&courseId=' + _defaults.courseid + '&clazzId=' + _defaults.clazzId + '&knowledgeId=' + _defaults.knowledgeid + '&jobId=' + obj.jobid + '&enc=' + obj.enc;
        setTimeout(function () { startDoPhoneCyWork(0, dom, phoneWeb); }, 300);
    } else {
        setTimeout(function () { startDoCyWork(0, dom); }, 300);
    }
}

/* ========================= getElement（修复：原来缺失的函数） ========================= */
// 轮询在 iframe 子文档中查找匹配选择器的元素
function getElement(containerDoc, selector, maxAttempts) {
    maxAttempts = maxAttempts || 60;
    return new Promise(function (resolve) {
        var retries = 0;
        var check = function () {
            try {
                var el = containerDoc.querySelector(selector);
                if (el) return resolve(el);
            } catch (e) {}
            retries++;
            if (retries >= maxAttempts) return resolve(null);
            setTimeout(check, 1000);
        };
        check();
    });
}

/* ========================= 轮询查找 iframe 元素 ========================= */
function pollForElement(iframeDom, selector, interval, maxAttempts) {
    interval = interval || 2000;
    maxAttempts = (typeof maxAttempts === 'number' && maxAttempts > 0) ? maxAttempts : 60;
    return new Promise(function (resolve) {
        var attempts = 0;
        var check = function () {
            try {
                var doc = $(iframeDom).contents()[0];
                if (doc) {
                    var el = doc.querySelector(selector);
                    if (el) return resolve(el);
                }
            } catch (e) {}
            attempts++;
            if (attempts >= maxAttempts) {
                logger('框架等待超时（' + Math.round(attempts * interval / 1000) + 's），上层将重试或跳过', 'red');
                return resolve(null);
            }
            if (attempts % 15 === 0) {
                logger('框架仍在加载中，已等待' + (attempts * interval / 1000) + '秒...请耐心等待', 'orange');
            }
            setTimeout(check, interval);
        };
        check();
    });
}

/* ========================= startDoPhoneCyWork ========================= */
function startDoPhoneCyWork(index, doms, phoneWeb) {
    if (isPaused()) {
        setTimeout(function () { startDoPhoneCyWork(index, doms, phoneWeb); }, 3000);
        return;
    }
    logger('正在加载测验...', 'purple');
    // 直接导航 iframe，从 iframe 真实 DOM 检查状态（比 XHR 可靠）
    var iframeEl = doms.length ? doms[0] : doms;
    if (!iframeEl) {
        logger('没有 iframe，跳过测验', 'red');
        _mlist.splice(0,1); _domList.splice(0,1);
        return setTimeout(missonStart, 2000);
    }
    $(iframeEl).attr('src', phoneWeb);
    waitForIframeContent(iframeEl, function (loadedDoc) {
        if (!loadedDoc) {
            logger('iframe 加载失败，跳过测验', 'red');
            _mlist.splice(0,1); _domList.splice(0,1);
            return setTimeout(missonStart, 3000);
        }
        // 主检测：从 iframe 内标准状态元素获取
        var workStatus = $(loadedDoc).find('.testTit_status').text().trim() || $(loadedDoc).find('.newTestTitle').text().trim() || '';
        var isCompleted = workStatus.indexOf('已完成') !== -1;
        if (!isCompleted && !workStatus) {
            // 保底检测：完成后页面可能无状态元素，但会显示特殊标记
            isCompleted = $(loadedDoc).find('.prevHoverTips:contains(已完成)').length > 0
                || $(loadedDoc).find('.posCatalog_select:contains(已完成)').length > 0
                || $(loadedDoc).find('[class*="finish"],[class*="complete"]').length > 0
                || $(loadedDoc).find('.catalogueIcon:contains(完成)').length > 0;
        }
        logger('测验状态: ' + (workStatus || (isCompleted ? '已完成' : '待做')), 'blue');
        if (isCompleted) {
            logger('测验已完成，跳过', 'green');
            _mlist.splice(0,1); _domList.splice(0,1);
            return setTimeout(missonStart, 3000);
        }
        if (workStatus.indexOf('待批阅') !== -1) {
            logger('测验待批阅，跳过', 'red');
            _mlist.splice(0,1); _domList.splice(0,1);
            return setTimeout(missonStart, 5000);
        }
        logger('开始答题', 'green');
        doPhoneWorkIframe(iframeEl);
    });
}

// 等 iframe 内容加载完成
function waitForIframeContent(iframeEl, callback) {
    var retries = 0;
    var check = function () {
        try {
            var doc = iframeEl.contentDocument || iframeEl.contentWindow.document;
            if (doc && doc.body && doc.body.innerHTML && doc.body.innerHTML.length > 100) {
                callback(doc);
                return;
            }
        } catch (e) {}
        retries++;
        if (retries > 120) {
            logger('iframe 加载超时，尝试继续', 'orange');
            callback(null);
            return;
        }
        if (retries % 15 === 0) {
            logger('等待 iframe 加载中，已等' + (retries) + '秒...', 'orange');
        }
        setTimeout(check, 1000);
    };
    setTimeout(check, 1000);
}

/* ========================= doPhoneWork ========================= */
function doPhoneWorkIframe(iframeEl) {
    try {
        var doc = iframeEl.contentDocument || iframeEl.contentWindow.document;
        var $doc = $(doc);
        var form = $doc.find('.Wrappadding form');
        if (!form.length) form = $doc.find('form');
        $subBtn = form.find('.zquestions .zsubmit .btn-ok-bottom');
        $okBtn = $doc.find('#okBtn');
        $saveBtn = form.find('.zquestions .zsubmit .btn-save');
        var timuList = form.find('.zquestions .Py-mian1, .zquestions .TiMu, .CeYan .TiMu');
        if (timuList.length === 0) {
            timuList = $doc.find('.Py-mian1, .TiMu, .Zy_TItle, .questionLi, .mark_table .whiteDiv .questionLi, [class*="TiMu"], [class*="question"]');
        }
        // 检测：如果找不到题目或提交按钮，说明可能已提交/页面结构异常
        if (timuList.length === 0 && $subBtn.length === 0) {
            logger('未找到题目，测验可能已提交通过，跳过', 'orange');
            _mlist.splice(0,1); _domList.splice(0,1);
            return setTimeout(missonStart, 3000);
        }
        logger('找到 ' + timuList.length + ' 道题', 'blue');
        startDoPhoneTimu(0, timuList);
    } catch (e) {
        logger('iframe 内容不可访问: ' + e.message, 'red');
        _mlist.splice(0,1); _domList.splice(0,1);
        setTimeout(missonStart, 3000);
    }
}

/* ========================= startDoPhoneTimu ========================= */
function startDoPhoneTimu(c, timuList) {
    var index = c;
    var TimuList = timuList;
    if (isPaused()) {
        setTimeout(function () { startDoPhoneTimu(c, timuList); }, 3000);
        return;
    }
    if (c == timuList.length) {
        var doSubmit = gmGet('sub') === 'true' || gmGet('force') === 'true';
        if (doSubmit) {
            logger('自动提交...', 'green');
            setTimeout(function () {
                $subBtn.click();
                setTimeout(function () {
                    $okBtn.click();
                    _mlist.splice(0,1); _domList.splice(0,1);
                    setTimeout(missonStart, 3000);
                }, 3000);
            }, 5000);
        } else {
            logger('测验处理完成，自动保存！', 'green');
            setTimeout(function () {
                $saveBtn.click();
                _mlist.splice(0,1); _domList.splice(0,1);
                setTimeout(missonStart, 3000);
            }, 5000);
        }
        return;
    }
    // 获取当前题目所属的window对象 (可能是iframe)
    let contextWindow = TimuList[index] ? (TimuList[index].ownerDocument.defaultView || unsafeWindow) : unsafeWindow;
    let questionFull = $(TimuList[index]).find('.Py-m1-title').html()
    let _question = tidyQuestion(questionFull).replace(/.*?\[.*?题\]\s*\n\s*/, '').trim()
    let typeName = questionFull.match(/.*?\[(.*?)]|$/)[1];
    let _type = _typeMap[typeName];
    let _a = []
    let _answerTmpArr
    var check_answer_flag = 0;

    // 如果题型不在预设类型中，根据DOM结构自动识别题型
    if (_type === undefined) {
        logger('未知题型: ' + typeName + '，尝试自动识别', 'blue');
        let singleChoiceList = $(TimuList[index]).find('.answerList.singleChoice li');
        let multiChoiceList = $(TimuList[index]).find('.answerList.multiChoice li');
        if (singleChoiceList && singleChoiceList.length > 0) { _type = 0; logger('自动识别为单选题', 'green'); }
        else if (multiChoiceList && multiChoiceList.length > 0) { _type = 1; logger('自动识别为多选题', 'green'); }
        else {
            let tkList = $(TimuList[index]).find('.blankList2 input');
            if (tkList && tkList.length > 0) { _type = 2; logger('自动识别为填空题', 'green'); }
            else {
                let panduanList = $(TimuList[index]).find('.answerList.panduan li');
                if (panduanList && panduanList.length > 0) { _type = 3; logger('自动识别为判断题', 'green'); }
                else {
                    let textareaList = $(TimuList[index]).find('textarea');
                    let editorList = $(TimuList[index]).find('.edui-editor');
                    if ((textareaList && textareaList.length > 0) || (editorList && editorList.length > 0)) { _type = 4; logger('自动识别为简答题或材料题', 'green'); }
                }
            }
        }
    }

    _currentQuestionMeta = { index: index, total: TimuList.length, typeName: typeName }
    switch (_type) {
        case 0: { // 单选题
            _answerTmpArr = $(TimuList[index]).find('.answerList.singleChoice li')
            let mergedAnswers = [];
            _answerTmpArr.each(function () {
                var answerText = $(this).text().replace(/[ABCD]/g, '').trim();
                mergedAnswers.push(answerText);
            });
            mergedAnswers = mergedAnswers.join("|");
            _question = buildPrompt({ type: '单选题', question: _question, options: mergedAnswers.split('|') })
            // 判断是否已作答（aria-label 兜底）
            for (let i = 0; i < _answerTmpArr.length; i++) {
                if ($(_answerTmpArr[i]).attr('aria-label')) {
                    logger(index + 1 + '此题已作答，准备切换下一题', 'green')
                    markAnswered(index);
                    check_answer_flag = 1;
                    setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, 30)
                    break
                }
            }
            if (check_answer_flag == 0) {
                getAnswer(_type, _question).then((agrs) => {
                    _answerTmpArr = $(TimuList[index]).find('.answerList.singleChoice li')
                    $.each(_answerTmpArr, (i, t) => {
                        _a.push(tidyStr($(t).html()).replace(/^[A-Z]\s*\n\s*/, '').trim())
                    })
                    let _i = _a.findIndex((item) => item == agrs)
                    if (_i == -1) { _i = findBestFuzzyMatch(_a, agrs) }
                    // 兜底：AI 有时会把单选题答案输出为多选格式(e.g. "能谈|爱谈")，拆开逐项匹配
                    if (_i == -1 && agrs.indexOf('|') !== -1) {
                        var parts = agrs.split('|');
                        for (var pi = 0; pi < parts.length; pi++) {
                            var p = parts[pi].trim();
                            if (!p) continue;
                            var matchIdx = _a.findIndex(function (item) { return item == p; });
                            if (matchIdx === -1) matchIdx = findBestFuzzyMatch(_a, p);
                            if (matchIdx !== -1) { _i = matchIdx; break; }
                        }
                    }
                    if (_i == -1) {
                        logger('AI未能完美匹配正确答案，请尝试更换更高级模型或手动选择，跳过此题', 'red')
                        gmSet('sub', 'false')
                        setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time)
                    } else {
                        $(_answerTmpArr[_i]).click()
                        markAnswered(index);
                        logger('自动答题成功，准备切换下一题', 'green')
                        setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time)
                    }
                }).catch((agrs) => { if (agrs && agrs['c'] == 0) { setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time) } })
            }
            break
        }
        case 1: { // 多选题
            _answerTmpArr = $(TimuList[index]).find('.answerList.multiChoice li')
            let mergedAnswers = [];
            _answerTmpArr.each(function () {
                var answerText = $(this).text().replace(/[ABCD]/g, '').trim();
                mergedAnswers.push(answerText);
            });
            mergedAnswers = mergedAnswers.join("|");
            _question = buildPrompt({ type: '多选题', question: _question, options: mergedAnswers.split('|'), answer_format: "用'|'分割多个答案" })
            for (let i = 0; i < _answerTmpArr.length; i++) {
                if ($(_answerTmpArr[i]).attr('aria-label')) {
                    logger(index + 1 + '此题已作答，准备切换下一题', 'green')
                    markAnswered(index);
                    check_answer_flag = 1;
                    setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, 30)
                    break
                }
            }
            if (check_answer_flag == 0) {
                getAnswer(_type, _question).then((agrs) => {
                    if (agrs == '暂无答案') {
                        logger('AI未能完美匹配正确答案，请尝试更换更高级模型或手动选择，跳过此题', 'red')
                        gmSet('sub', 'false')
                        setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time)
                    } else {
                        _answerTmpArr = $(TimuList[index]).find('.answerList.multiChoice li')
                        let _multiOptions = []
                        $.each(_answerTmpArr, (i, t) => { _multiOptions.push(tidyStr($(t).html()).replace(/^[A-Z]\s*\n\s*/, '').trim()) })
                        // 多选匹配：先精确匹配，再模糊匹配
                        let _matchedAny = false
                        // 原版方式：点父元素 + 写隐藏 input
                        // 多选操作：点 li + 操作内部 checkbox + 点子元素
                        function _checkOpt(el) {
                            if (!el || !el.length) return;
                            var raw = el[0] || el;
                            // 找内部 checkbox
                            var cb = $(raw).find('input[type="checkbox"]')[0];
                            if (cb) {
                                cb.checked = true;
                                try { cb.dispatchEvent(new Event('change', {bubbles:true})); } catch(e) {}
                                try { cb.dispatchEvent(new Event('input', {bubbles:true})); } catch(e) {}
                                try { cb.click(); } catch(e) {}
                            }
                            // 点击 li + 父 + 子
                            try { raw.click(); } catch(e) {}
                            try { $(raw).parent().click(); } catch(e) {}
                            try { $(raw).trigger('mousedown'); } catch(e) {}
                            $(raw).find('a,span,label').each(function(){
                                try { this.click(); } catch(e){}
                            });
                        }
                        $.each(_answerTmpArr, function(i) {
                            if (agrs.indexOf(_multiOptions[i]) != -1) {
                                _matchedAny = true;
                                setTimeout(function() { _checkOpt($(_answerTmpArr[i])); }, 300 * i);
                            }
                        });
                        if (!_matchedAny) {
                            var fuzzyIndices = findFuzzyMatchMultiple(_multiOptions, agrs);
                            for (var fi = 0; fi < fuzzyIndices.length; fi++) {
                                (function(idx) {
                                    setTimeout(function() { _checkOpt($(_answerTmpArr[idx])); }, 300 * fi);
                                })(fuzzyIndices[fi]);
                            }
                        }
                        setTimeout(function() {
                            markAnswered(index);
                            logger('自动答题成功，准备切换下一题', 'green');
                            setTimeout(function() { startDoPhoneTimu(index + 1, TimuList); }, setting.time);
                        }, 1500);
                    }
                }).catch((agrs) => { if (agrs && agrs['c'] == 0) { setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time) } })
            }
            break
        }
        case 2: { // 填空题
            let tkList = $(TimuList[index]).find('.blankList2 input')
            let tkEditorBlocks = $(TimuList[index]).find('[data-editorindex]')
            if (tkEditorBlocks && tkEditorBlocks.length > 0) {
                let firstTextarea = $(TimuList[index]).find('textarea[name^="answer"]')
                if (firstTextarea.length > 0 && $(firstTextarea[0]).val() && $(firstTextarea[0]).val().trim() !== '' && !isRedoMode()) {
                    logger("此题已作答,跳过", "green");
                    markAnswered(index);
                    setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, 30);
                    break
                }
                _question = buildPrompt({ type: '填空题', question: _question, answer_format: "多个填空用'|'分隔" })
                getAnswer(_type, _question).then((agrs) => {
                    if (agrs == '暂无答案') {
                        logger('AI未能完美匹配正确答案，请尝试更换更高级模型或手动选择，跳过此题', 'red')
                        gmSet('sub', 'false')
                        setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time)
                        return
                    }
                    let answers = agrs.split('|')
                    let editorBlocks = $(TimuList[index]).find('[data-editorindex]')
                    $.each(editorBlocks, (i, block) => {
                        let editorIndex = $(block).attr('data-editorindex')
                        let itemId = $(block).attr('data-itemid')
                        let answerContent = answers[i] || answers[0] || agrs
                        setTimeout(() => {
                            try {
                                let ueditor = null
                                if (contextWindow.editors && contextWindow.editors[editorIndex]) ueditor = contextWindow.editors[editorIndex].ueditor
                                if (!ueditor && contextWindow.UE && contextWindow.UE.instants) ueditor = contextWindow.UE.instants['ueditorInstant' + editorIndex]
                                if (!ueditor && itemId && contextWindow.UE && contextWindow.UE.getEditor) ueditor = contextWindow.UE.getEditor('ananas-editor-answer' + itemId)
                                if (ueditor) { ueditor.setContent(answerContent); logger(`填空题第${i + 1}空已填入 (Index: ${editorIndex})`, 'green') }
                                else { logger(`填空题第${i + 1}空未找到编辑器实例 (Index: ${editorIndex})`, 'yellow') }
                                if (itemId) {
                                    let textarea = $('#answer' + itemId)
                                    if (textarea.length > 0) { textarea.val(answerContent); try { if (textarea[0].value === answerContent) { textarea[0].dispatchEvent(new Event('change')); textarea[0].dispatchEvent(new Event('input')) } } catch (e) {} }
                                }
                            } catch (e) { logger('填空题填入详情失败：' + e.message, 'red') }
                        }, 500 * (i + 1))
                    })
                    markAnswered(index);
                    setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time + 300 * editorBlocks.length)
                }).catch((agrs) => { if (agrs && agrs['c'] == 0) { setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time) } })
            } else if (tkList && tkList.length > 0) {
                if ($(tkList[0]).val() && $(tkList[0]).val().trim() !== '' && !isRedoMode()) {
                    logger("此题已作答,跳过", "green");
                    markAnswered(index);
                    setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, 30);
                    break
                }
                getAnswer(_type, _question).then((agrs) => {
                    if (agrs == '暂无答案') { logger('AI未能完美匹配正确答案，请尝试更换更高级模型或手动选择，跳过此题', 'red'); gmSet('sub', 'false'); setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time); return }
                    let answers = agrs.split('|')
                    let inputList = $(TimuList[index]).find('.blankList2 input')
                    $.each(inputList, (i, t) => { setTimeout(() => { $(t).val(answers[i] || answers[0] || agrs); $(t).trigger('input').trigger('change') }, 200) })
                    setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time)
                }).catch((agrs) => { if (agrs && agrs['c'] == 0) { setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time) } })
            } else {
                logger('未找到填空题输入区域，跳过此题', 'red')
                gmSet('sub', 'false')
                setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time)
            }
            break
        }
        case 3: { // 判断题
            _answerTmpArr = $(TimuList[index]).find('.answerList.panduan li')
            $.each(_answerTmpArr, (i, t) => { _a.push($(t).text().trim()) })
            for (let i = 0; i < _answerTmpArr.length; i++) {
                if ($(_answerTmpArr[i]).attr('aria-label')) {
                    logger(index + 1 + '此题已作答，准备切换下一题', 'green');
                    markAnswered(index);
                    check_answer_flag = 1;
                    setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, 30)
                    break
                }
            }
            if (check_answer_flag == 0) {
                _question = buildPrompt({ type: '判断题', question: _question, answer_format: "只回答正确或错误" })
                getAnswer(_type, _question).then((agrs) => {
                    let judgeResult = parseJudgeAnswer(agrs)
                    if (judgeResult === null) { logger('答案匹配出错，准备切换下一题', 'red'); setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time); return }
                    let _i = findJudgeOptionIndex(_a, judgeResult === 'true')
                    if (_i === -1) { logger('未匹配到正确选项，跳过', 'red'); setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time); return }
                    setTimeout(() => { $(_answerTmpArr[_i]).click(); logger('自动答题成功，准备切换下一题', 'green'); setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time) }, 300)
                }).catch((agrs) => { if (agrs && agrs['c'] == 0) { setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time) } })
            }
            break
        }
        case 4: { // 简答题或材料题
            _question = buildPrompt({ type: '简答题或材料题', question: _question })
            let jdEditorBlocks = $(TimuList[index]).find('[data-editorindex]')
            let jdTextareas = $(TimuList[index]).find('textarea[name^="answer"]')
            if (jdEditorBlocks && jdEditorBlocks.length > 0) {
                if (jdTextareas.length > 0 && $(jdTextareas[0]).val() && $(jdTextareas[0]).val().trim() !== '' && !isRedoMode()) {
                    logger(index + 1 + '简答题已作答，准备切换下一题', 'green');
                    markAnswered(index);
                    setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, 30); break
                }
                getAnswer(_type, _question).then((agrs) => {
                    if (agrs == '暂无答案') { logger('AI无法匹配答案，请手动完成', 'red'); gmSet('sub', 'false'); setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time); return }
                    let firstBlock = jdEditorBlocks.first()
                    if (firstBlock.length > 0) {
                        let editorIndex = firstBlock.attr('data-editorindex'); let itemId = firstBlock.attr('data-itemid')
                        if (!itemId && jdTextareas.length > 0) { let tid = $(jdTextareas[0]).attr('id'); if (tid) itemId = tid.replace('answer', '') }
                        setTimeout(() => {
                            try {
                                let ueditor = null
                                if (contextWindow.editors && contextWindow.editors[editorIndex]) ueditor = contextWindow.editors[editorIndex].ueditor
                                if (!ueditor && contextWindow.UE && contextWindow.UE.instants) ueditor = contextWindow.UE.instants['ueditorInstant' + editorIndex]
                                if (!ueditor && itemId && contextWindow.UE && contextWindow.UE.getEditor) ueditor = contextWindow.UE.getEditor('ananas-editor-answer' + itemId)
                                if (ueditor) { ueditor.setContent(agrs); logger(`简答题已填入`, 'green') }
                                else { logger(`简答题未找到编辑器实例`, 'yellow') }
                                if (jdTextareas.length > 0) { let ta = $(jdTextareas[0]); ta.val(agrs); try { ta[0].dispatchEvent(new Event('change')); ta[0].dispatchEvent(new Event('input')) } catch (e) {} }
                            } catch (e) { logger('简答题填入失败：' + e.message, 'red'); if (jdTextareas.length > 0) { $(jdTextareas[0]).val(agrs); logger('简答题通过textarea填入答案', 'blue') } }
                        }, 500)
                    } else { if (jdTextareas.length > 0) { $(jdTextareas[0]).val(agrs); logger('简答题通过textarea填入答案', 'blue') } }
                    setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time)
                }).catch((agrs) => { if (agrs && agrs['c'] == 0) { setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time) } })
            } else if (jdTextareas && jdTextareas.length > 0) {
                if ($(jdTextareas[0]).val() && $(jdTextareas[0]).val().trim() !== '' && !isRedoMode()) {
                    logger(index + 1 + '简答题已作答，准备切换下一题', 'green'); setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, 30)
                } else {
                    getAnswer(_type, _question).then((agrs) => {
                        if (agrs == '暂无答案') { logger('AI无法匹配答案，请手动完成', 'red'); gmSet('sub', 'false') }
                        else { $(jdTextareas[0]).val(agrs); $(jdTextareas[0]).trigger('input').trigger('change'); markAnswered(index); logger('简答题自动答题成功，准备切换下一题', 'green') }
                        setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time)
                    }).catch((agrs) => { if (agrs && agrs['c'] == 0) { setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time) } })
                }
            } else {
                logger('无法找到简答题输入区域，请手动完成', 'red'); gmSet('sub', 'false'); setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time)
            }
            break
        }
        case 5: {
            getAnswer(_type, _question).then((agrs) => { gmSet('sub', 'false'); logger('此类型题目无法区分单/多选，请手动选择答案', 'red'); setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time) }).catch((agrs) => { if (agrs && agrs['c'] == 0) { setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time) } })
            break
        }
        default:
            logger('暂不支持处理此类型题目：' + typeName + '，跳过！请手动作答。', 'red')
            gmSet('sub', 'false')
            setTimeout(() => { startDoPhoneTimu(index + 1, TimuList) }, setting.time)
            break
    }
}

/* ========================= PC版测验处理（startDoCyWork / doWork / startDoWork） ========================= */
function startDoCyWork(index, doms) {
    if (isPaused()) { setTimeout(function () { startDoCyWork(index, doms); }, 3000); return; }
    if (index == doms.length) { logger('全部测验处理完毕', 'green'); return setTimeout(switchMission, 5000); }
    var rawIframe = doms[index];
    if (!rawIframe) { return setTimeout(function () { startDoCyWork(index, doms); }, 5000); }
    function waitForContent(retry) {
        retry = retry || 0;
        if (retry > 40) { _domList.splice(0,1); logger('加载超时跳过', 'red'); return setTimeout(switchMission, 2000); }
        try {
            var doc = rawIframe.contentDocument || rawIframe.contentWindow.document;
            if (doc && doc.body && doc.body.innerHTML && doc.body.innerHTML.length > 100) { processFrame(rawIframe); }
            else { setTimeout(function () { waitForContent(retry + 1); }, 500); }
        } catch (e) { setTimeout(function () { waitForContent(retry + 1); }, 500); }
    }
    function processFrame(iframe) {
        var doc = iframe.contentDocument || iframe.contentWindow.document;
        var workStatus = $(doc).find('.testTit_status, .newTestTitle').first().text().trim() || '待做';
        logger('测验状态: ' + workStatus, 'blue');
        var nested = $(doc).find('iframe').first();
        if (nested.length && nested[0].contentDocument) { var ndoc = nested[0].contentDocument || nested[0].contentWindow.document; if (ndoc && ndoc.body) { doc = ndoc; workStatus = $(doc).find('.testTit_status, .newTestTitle').first().text().trim() || workStatus; } }
        if (workStatus.indexOf('已完成') !== -1) {
            if (isRedoMode()) { logger('已完成，重做模式继续', 'blue'); setTimeout(function () { doWork(index, doms, iframe); }, 300); }
            else { logger('已完成跳过', 'green'); _mlist.splice(0,1); _domList.splice(0,1); setTimeout(function () { startDoCyWork(index+1, doms); }, 2000); }
            return;
        }
        if (workStatus.indexOf('待做') !== -1 || workStatus.indexOf('待完成') !== -1 || workStatus.indexOf('重做') !== -1 || workStatus.indexOf('未达到') !== -1) { setTimeout(function () { doWork(index, doms, iframe); }, 5000); }
        else if (workStatus.indexOf('待批阅') !== -1) { _mlist.splice(0,1); _domList.splice(0,1); setTimeout(function () { startDoCyWork(index+1, doms); }, 5000); }
        else { _mlist.splice(0,1); _domList.splice(0,1); logger('未知状态[' + workStatus + ']跳过', 'red'); setTimeout(function () { startDoCyWork(index+1, doms); }, 2000); }
    }
    waitForContent(0);
}

function doWork(index, doms, dom) {
    var doc; try { doc = dom.contentDocument || dom.contentWindow.document; } catch (e) { doc = null; }
    if (!doc || !doc.body) { _mlist.splice(0,1); _domList.splice(0,1); logger('iframe不可访问', 'red'); return setTimeout(function () { startDoCyWork(index+1, doms); }, 2000); }
    var nestedFrames = $(doc).find('iframe');
    for (var ni = 0; ni < nestedFrames.length; ni++) { var ndoc; try { ndoc = nestedFrames[ni].contentDocument || nestedFrames[ni].contentWindow.document; } catch (e) { continue; } if (!ndoc || !ndoc.body || ndoc.body.innerHTML.length < 100) continue; doc = ndoc; break; }
    $frame_c = $(doc);
    $subBtn = $frame_c.find('.ZY_sub .btnSubmit, .submitBtn, .btn-ok-bottom');
    $saveBtn = $frame_c.find('.ZY_sub .btnSave');
    var allQ = $frame_c.find('.zquestions .Py-mian1, .Py-mian1, .CeYan .TiMu, .TiMu, .questionLi');
    var realQ = []; allQ.each(function () { if ($(this).find('.Py-m1-title, .Zy_TItle, .mark_name').length > 0) realQ.push(this); });
    logger('找到 ' + realQ.length + ' 道题', 'blue');
    if (realQ.length > 0) { startDoWork(index, doms, 0, $(realQ)); }
    else { _mlist.splice(0,1); _domList.splice(0,1); logger('找不到有效题目跳过', 'red'); setTimeout(function () { startDoCyWork(index+1, doms); }, 2000); }
}

function startDoWork(index, doms, c, TiMuList) {
    if (isPaused()) { setTimeout(function () { startDoWork(index, doms, c, TiMuList); }, 3000); return; }
    if (c == TiMuList.length) {
        if (gmGet('sub') === 'true' || gmGet('force') === 'true') {
            logger('自动提交...', 'green');
            setTimeout(function () { $subBtn.click(); setTimeout(function () { $frame_c.find('#confirmSubWin > div > div > a.bluebtn').click(); _mlist.splice(0,1); _domList.splice(0,1); setTimeout(function () { startDoCyWork(index+1, doms); }, 3000); }, 3000); }, 5000);
        }
        return;
    }
    var qFull = $(TiMuList[c]).find('.Zy_TItle.clearfix > div').html() || $(TiMuList[c]).html() || '';
    if (!qFull || qFull.trim() === '' || qFull.trim() === ' ') { logger('第' + (c+1) + '题空跳过', 'orange'); return setTimeout(function () { startDoWork(index, doms, c+1, TiMuList); }, 30); }
    var question = tidyQuestion(qFull);
    var typeName = (question.match(/^【(.*?)】/) || [,''])[1];
    var type = _typeMap[typeName];
    _currentQuestionMeta = { index: c, total: TiMuList.length, typeName: typeName };
    if (type === undefined) {
        var choiceList = $(TiMuList[c]).find('.Zy_ulTop li'), fillBlank = $(TiMuList[c]).find('.Zy_ulTk .XztiHover1'), editor = $(TiMuList[c]).find('.edui-editor');
        if (choiceList.length) { var hasCb = $(TiMuList[c]).find('input[type="checkbox"]').length > 0; type = (choiceList.length === 2 && $(choiceList[0]).text().match(/[对√]/)) ? 3 : (hasCb ? 1 : 0); }
        else if (fillBlank.length) type = 2;
        else type = 4;
    }
    var answerArr, opts = [];
    switch (type) {
        case 0:
            answerArr = $(TiMuList[c]).find('.Zy_ulTop li a');
            var _already = false; answerArr.each(function () { var $opt = $(this); if ($opt.attr('aria-label') || $opt.hasClass('cur') || $opt.parent().find('.check_answer').length > 0 || $opt.closest('li').find('.check_answer').length > 0 || ($opt.parent().attr('class')||'').indexOf('check') >= 0) _already = true; }); if (_already && !isRedoMode()) { markAnswered(c); logger('第' + (c+1) + '题已作答，跳过', 'green'); return setTimeout(function () { startDoWork(index, doms, c+1, TiMuList); }, 30); }
            var merged = []; answerArr.each(function () { merged.push($(this).text().replace(/[ABCD]/g,'').trim()); });
            question = buildPrompt({ type:'单选题', question:question, options:merged });
            answerArr.each(function (i, t) { opts.push(tidyStr($(t).html())); });
            getAnswer(type, question).then(function (agrs) {
                if (gmGet('alterTitle') !== 'false') $(TiMuList[c]).find('.Zy_TItle.clearfix > div').append('<p></p>' + agrs);
                var idx = opts.indexOf(agrs); if (idx === -1) idx = findBestFuzzyMatch(opts, agrs);
                if (idx !== -1) { $(answerArr[idx]).parent().click(); markAnswered(c); }
                setTimeout(function () { startDoWork(index, doms, c+1, TiMuList); }, setting.time);
            });
            break;
        case 1:
            answerArr = $(TiMuList[c]).find('.Zy_ulTop li a');
            var _already = false; answerArr.each(function () { var $opt = $(this); if ($opt.attr('aria-label') || $opt.hasClass('cur') || $opt.parent().find('.check_answer').length > 0 || $opt.closest('li').find('.check_answer').length > 0 || ($opt.parent().attr('class')||'').indexOf('check') >= 0) _already = true; }); if (_already && !isRedoMode()) { logger('第' + (c+1) + '题已作答，跳过', 'green'); return setTimeout(function () { startDoWork(index, doms, c+1, TiMuList); }, 30); }
            var merged2 = []; answerArr.each(function () { merged2.push($(this).text().replace(/[ABCD]/g,'').trim()); });
            question = buildPrompt({ type:'多选题', question:question, options:merged2, answer_format:"用'|'分割多个答案" });
            getAnswer(type, question).then(function (agrs) {
                opts = []; answerArr.each(function (i, t) { opts.push(tidyStr($(t).html())); });
                var clicked = []; answerArr.each(function (i, t) { if (agrs.indexOf(opts[i]) !== -1) { $(answerArr[i]).parent().click(); clicked.push(['A','B','C','D','E','F','G'][i]); } });
                if (clicked.length === 0) { var fuzzy = findFuzzyMatchMultiple(opts, agrs); for (var fi = 0; fi < fuzzy.length; fi++) { $(answerArr[fuzzy[fi]]).parent().click(); clicked.push(['A','B','C','D','E','F','G'][fuzzy[fi]]); } }
                if (clicked.length > 0) { var firstLi = $(TiMuList[c]).find('.Zy_ulTop li:first'), onclickAttr = firstLi.attr('onclick') || '', idMatch = onclickAttr.match(/addcheck\((\d+)/); if (idMatch) $(TiMuList[c]).find('#answer' + idMatch[1]).val(clicked.join('')); }
                setTimeout(function () { startDoWork(index, doms, c+1, TiMuList); }, setting.time);
            }).catch(function () { setTimeout(function () { startDoWork(index, doms, c+1, TiMuList); }, setting.time); });
            break;
        case 2:
            question = buildPrompt({ type:'填空题', question:question, answer_format:"用'|'分割多个答案" });
            var taList = $(TiMuList[c]).find('.Zy_ulTk .XztiHover1');
            getAnswer(type, question).then(function (agrs) {
                var as = agrs.split('|');
                taList.each(function (i, t) { setTimeout(function () { $(t).find('textarea').html('<p>' + (as[i]||as[0]) + '</p>'); }, 300); });
                setTimeout(function () { startDoWork(index, doms, c+1, TiMuList); }, setting.time);
            });
            break;
        case 3:
            answerArr = $(TiMuList[c]).find('.Zy_ulTop li a');
            answerArr.each(function (i, t) { opts.push(tidyStr($(t).html())); });
            question = buildPrompt({ type:'判断题', question:question, answer_format:"只回答正确或错误" });
            getAnswer(type, question).then(function (agrs) {
                if (gmGet('alterTitle') !== 'false') $(TiMuList[c]).find('.Zy_TItle.clearfix > div').append('<p></p>' + agrs);
                agrs = '正确|是|对|√|T|ri'.indexOf(agrs) !== -1 ? '对' : '错';
                var idx = opts.indexOf(agrs); if (idx === -1) idx = findBestFuzzyMatch(opts, agrs);
                if (idx !== -1) $(answerArr[idx]).parent().click(); markAnswered(c);
                setTimeout(function () { startDoWork(index, doms, c+1, TiMuList); }, setting.time);
            });
            break;
        case 4: case 5: case 6:
            var xContainer = $(TiMuList[c]).find('.Zy_ulTk .XztiHover1');
            if (!xContainer.length) xContainer = $(TiMuList[c]);
            var ueIframe = xContainer.find('iframe[id^="ueditor_"]');
            if (!ueIframe.length) ueIframe = $(TiMuList[c]).find('iframe');
            if (ueIframe.length) {
                var types = {4:'简答题',5:'写作题',6:'翻译题'}, fmts = {4:'用50字简要回答',5:'用英文根据题目进行写作',6:'中文英文互译'};
                var p = buildPrompt({ type:types[type]||'简答题', question:question, answer_format:fmts[type]||'简要回答' });
                getAnswer(type, p).then(function (agrs) {
                    ueIframe.each(function (fi, frame) { setTimeout(function () { try { var fDoc = frame.contentDocument || frame.contentWindow.document; if (fDoc && fDoc.body) fDoc.body.innerHTML = '<p>' + agrs.replace(/\n/g,'<br>') + '</p>'; } catch (ef) {} }, 200 + fi*300); });
                    var ta = xContainer.find('textarea'); if (!ta.length) ta = $(TiMuList[c]).find('textarea');
                    ta.each(function (ti, t) { var tid = $(t).attr('id')||$(t).attr('name'); if (tid) { try { UE.getEditor(tid).setContent(agrs); } catch (e) {} } $(t).val(agrs); $(t).html('<p>' + agrs + '</p>'); });
                    logger('已填入答案', 'green');
                    setTimeout(function () { startDoWork(index, doms, c+1, TiMuList); }, setting.time + 400);
                }).catch(function () { setTimeout(function () { startDoWork(index, doms, c+1, TiMuList); }, setting.time); });
            } else { logger('未找到答题框', 'orange'); setTimeout(function () { startDoWork(index, doms, c+1, TiMuList); }, setting.time); }
            break;
        default: setTimeout(function () { startDoWork(index, doms, c+1, TiMuList); }, setting.time);
    }
}

/* ========================= 考试处理 ========================= */
function missonExam() { logger('处理考试', 'green'); var list = $('.mark_table .whiteDiv .questionLi, .mark_table .questionLi'); if (list.length === 0) list = $('.questionLi'); doExam(0, list); }
function toNextExam() { if (gmGet('examTurn') === 'true') { var delay = Math.floor(Math.random() * 4000) + 3000; setTimeout(function () { var n = $('.nextBtn:visible:first'); if (n.length) n.click(); }, delay); } }

function doExam(index, TiMuList) {
    if (isPaused()) { setTimeout(function () { doExam(index, TiMuList); }, 3000); return; }
    if (index >= TiMuList.length) { logger('考试处理完毕', 'green'); if (gmGet('sub') === 'true' || gmGet('force') === 'true') { var s = $('.examSubmitBtn:visible:first'); if (s.length) setTimeout(function () { s.click(); }, 3000); } return; }
    var timu = $(TiMuList[index]), typeName = timu.attr('typename') || '';
    var qType = _typeMap[typeName];
    if (qType === undefined) {
        var ansP = timu.find('.clearfix.answerBg .fl.answer_p'), textareas = timu.find('textarea[name^="answerEditor"], .subEditor textarea');
        if (ansP.length) { qType = timu.find('.clearfix.answerBg input[type="checkbox"]').length > 0 ? 1 : 0; } else if (textareas.length) qType = 4;
        else { logger('未知题型:' + typeName, 'red'); toNextExam(); return; }
    }
    var qFull = timu.find('.mark_name').html() || '', question = tidyQuestion(qFull).replace(/^[(].*?[)]/, '').trim();
    _currentQuestionMeta = { index: index, total: TiMuList.length, typeName: typeName };
    var ansdom = timu.find('.stem_answer');
    switch (qType) {
        case 0: {
            var ansArr = ansdom.find('.clearfix.answerBg .fl.answer_p');
            var merged = []; ansArr.each(function () { merged.push($(this).text().replace(/[ABCD]/g,'').trim()); });
            question = buildPrompt({ type:'单选题', question:question, options:merged });
            var answered = false; ansArr.each(function () { if (($(this).parent().find('span').attr('class')||'').indexOf('check_answer') !== -1) answered = true; });
            if (answered && !isRedoMode()) { toNextExam(); break; }
            getAnswer(qType, question).then(function (agrs) {
                if (gmGet('alterTitle') !== 'false') timu.find('.mark_name').append('<p></p>' + agrs);
                var opts = []; ansArr.each(function (i, t) { opts.push(tidyStr($(t).html())); });
                var idx = opts.indexOf(agrs); if (idx === -1) idx = findBestFuzzyMatch(opts, agrs);
                if (idx !== -1) {
                    if (gmGet('goodStudent') === 'true') $(ansArr[idx]).parent().find('span').css('font-weight','bold');
                    else $(ansArr[idx]).parent().click();
                }
                toNextExam();
            });
            break;
        }
        case 1: {
            var ansArr2 = ansdom.find('.clearfix.answerBg .fl.answer_p');
            var merged2 = []; ansArr2.each(function () { merged2.push($(this).text().replace(/[ABCD]/g,'').trim()); });
            question = buildPrompt({ type:'多选题', question:question, options:merged2, answer_format:"用'|'分割多个答案" });
            getAnswer(qType, question).then(function (agrs) {
                if (gmGet('alterTitle') !== 'false') timu.find('.mark_name').append('<p></p>' + agrs);
                var opts = []; ansArr2.each(function (i, t) { opts.push(tidyStr($(t).html())); });
                ansArr2.each(function (i, t) { if (agrs.indexOf(opts[i]) !== -1) { if (gmGet('goodStudent') === 'true') $(ansArr2[i]).parent().find('span').css('font-weight','bold'); else $(ansArr2[i]).parent().click(); } });
                var fuzzy = findFuzzyMatchMultiple(opts, agrs);
                for (var fi = 0; fi < fuzzy.length; fi++) { (function(idx) { if (gmGet('goodStudent') === 'true') $(ansArr2[idx]).parent().find('span').css('font-weight','bold'); else $(ansArr2[idx]).parent().click(); })(fuzzy[fi]); }
                toNextExam();
            });
            break;
        }
        case 2: { var taList = ansdom.find('.Answer .divText .subEditor textarea'); question = buildPrompt({ type:'填空题', question:question, answer_format:"用'|'分割多个答案" }); getAnswer(qType, question).then(function (agrs) { var as = agrs.split('|'); taList.each(function (i, t) { var id = $(t).attr('id'); setTimeout(function () { UE.getEditor(id).setContent(as[i]); }, 300); }); toNextExam(); }); break; }
        case 3: {
            var ansArr3 = ansdom.find('.clearfix.answerBg .fl.answer_p');
            question = buildPrompt({ type:'判断题', question:question, answer_format:"只回答正确或错误" });
            getAnswer(qType, question).then(function (agrs) {
                if (gmGet('alterTitle') !== 'false') timu.find('.mark_name').append('<p></p>' + agrs);
                var opts = []; ansArr3.each(function (i, t) { opts.push($(t).text().trim()); });
                var judge = parseJudgeAnswer(agrs);
                if (judge !== null) { var idx = findJudgeOptionIndex(opts, judge === 'true'); if (idx !== -1) { if (gmGet('goodStudent') === 'true') $(ansArr3[idx]).parent().find('span').css('font-weight','bold'); else $(ansArr3[idx]).parent().click(); } }
                toNextExam();
            });
            break;
        }
        case 4: case 5: case 6: {
            var taList = findAnswerTextareas(ansdom); if (!taList.length) { toNextExam(); break; }
            var types = {4:'简答题',5:'写作题',6:'翻译题'}, fmts = {4:'用50字简要回答',5:'用英文根据题目进行写作',6:'中文英文互译'};
            var p = buildPrompt({ type:types[qType]||typeName, question:question, answer_format:fmts[qType]||'简要回答' });
            getAnswer(qType, p).then(function (agrs) { taList.each(function (i, t) { var id = $(t).attr('id')||$(t).attr('name'); setTimeout(function () { try { UE.getEditor(id).setContent(agrs); } catch (e) { $(t).val(agrs); } }, 300 + i*200); }); setTimeout(toNextExam, 300 + 200*taList.length); });
            break;
        }
        default: toNextExam();
    }
}

/* ========================= 考试预览 ========================= */
function missonExamPreview() { logger('处理考试预览', 'green'); var list = $('.mark_table .questionLi'); logger('共 ' + list.length + ' 题', 'blue'); doExamPreview(0, list); }
function getExamPreviewType(timu) {
    var typeName = timu.attr('typename');
    if (typeName && _typeMap[typeName] !== undefined) return { type: _typeMap[typeName], typeName: typeName };
    var text = timu.find('.colorShallow').text() || timu.find('.mark_name').text() || '';
    var m = text.match(/(单选题|多选题|填空题|判断题|简答题|论述题|写作题|翻译题)/);
    if (m && _typeMap[m[1]] !== undefined) return { type: _typeMap[m[1]], typeName: m[1] };
    var opts = timu.find('.answerBg .answer_p');
    if (opts.length) return { type: timu.find('.answerBg input[type="checkbox"]').length > 0 ? 1 : 0, typeName: typeName || (opts.length > 2 ? '多选题' : '单选题') };
    var tas = timu.find('textarea[name^="answerEditor"], .subEditor textarea');
    if (tas.length) return { type: 4, typeName: typeName || '简答题' };
    return { type: undefined, typeName: typeName || '未知' };
}
function doExamPreview(index, TiMuList) {
    if (isPaused()) { setTimeout(function () { doExamPreview(index, TiMuList); }, 3000); return; }
    if (index >= TiMuList.length) { logger('预览答题完成', 'green'); return; }
    var timu = $(TiMuList[index]), info = getExamPreviewType(timu), type = info.type, typeName = info.typeName;
    var qFull = timu.find('.mark_name').html() || '', question = tidyQuestion(qFull).replace(/^[(].*?[)]/, '').trim();
    _currentQuestionMeta = { index: index, total: TiMuList.length, typeName: typeName };
    function nextSoon() { setTimeout(function () { doExamPreview(index+1, TiMuList); }, (setting.time||2500) + Math.floor(Math.random()*1500)); }
    if (type === undefined) { logger('第' + (index+1) + '题无法识别', 'red'); return nextSoon(); }
    switch (type) {
        case 0: {
            var ans = timu.find('.answerBg .answer_p'); if (!ans.length) return nextSoon();
            var merged = []; ans.each(function () { merged.push($(this).text().replace(/[ABCD]/g,'').trim()); });
            question = buildPrompt({ type:'单选题', question:question, options:merged });
            getAnswer(type, question).then(function (agrs) {
                var opts = []; ans.each(function (i, t) { opts.push(tidyStr($(t).html())); });
                var idx = opts.indexOf(agrs); if (idx === -1) idx = findBestFuzzyMatch(opts, agrs);
                if (idx !== -1) { if (gmGet('goodStudent') === 'true') $(ans[idx]).parent().find('span').css('font-weight','bold'); else $(ans[idx]).parent().click(); }
                nextSoon();
            });
            break;
        }
        case 1: {
            var ans2 = timu.find('.answerBg .answer_p'); if (!ans2.length) return nextSoon();
            var merged2 = []; ans2.each(function () { merged2.push($(this).text().replace(/[ABCD]/g,'').trim()); });
            question = buildPrompt({ type:'多选题', question:question, options:merged2, answer_format:"用'|'分割多个答案" });
            getAnswer(type, question).then(function (agrs) {
                var opts2 = []; ans2.each(function (i, t) { opts2.push(tidyStr($(t).html())); });
                ans2.each(function (i, t) { if (agrs.indexOf(opts2[i]) !== -1) $(this).click(); });
                var fuzzy = findFuzzyMatchMultiple(opts2, agrs);
                for (var fi = 0; fi < fuzzy.length; fi++) $(ans2[fuzzy[fi]]).click();
                nextSoon();
            });
            break;
        }
        case 2: { var ta = findAnswerTextareas(timu); if (!ta.length) return nextSoon(); question = buildPrompt({ type:'填空题', question:question, answer_format:"用'|'分割多个答案" }); getAnswer(type, question).then(function (agrs) { var as = agrs.split('|'); ta.each(function (i, t) { var id = $(t).attr('id'); setTimeout(function () { try { UE.getEditor(id).setContent(as[i]); } catch (e) {} }, 300); }); nextSoon(); }); break; }
        case 3: {
            var ans3 = timu.find('.answerBg .answer_p'); if (!ans3.length) return nextSoon();
            question = buildPrompt({ type:'判断题', question:question, answer_format:"只回答正确或错误" });
            getAnswer(type, question).then(function (agrs) {
                var opts3 = []; ans3.each(function (i, t) { opts3.push($(t).text().trim()); });
                var judge = parseJudgeAnswer(agrs);
                if (judge !== null) { var idx = findJudgeOptionIndex(opts3, judge === 'true'); if (idx !== -1) { if (gmGet('goodStudent') === 'true') $(ans3[idx]).parent().find('span').css('font-weight','bold'); else $(ans3[idx]).parent().click(); } }
                nextSoon();
            });
            break;
        }
        case 4: case 5: case 6: {
            var ta2 = findAnswerTextareas(timu); if (!ta2.length) return nextSoon();
            var types = {4:'简答题',5:'写作题',6:'翻译题'}, fmts = {4:'用50字简要回答',5:'用英文根据题目进行写作',6:'中文英文互译'};
            var p = buildPrompt({ type:types[type]||typeName, question:question, answer_format:fmts[type]||'简要回答' });
            getAnswer(type, p).then(function (agrs) { ta2.each(function (i, t) { var id = $(t).attr('id')||$(t).attr('name'); setTimeout(function () { try { UE.getEditor(id).setContent(agrs); } catch (e) { $(t).val(agrs); } }, 300 + i*200); }); nextSoon(); });
            break;
        }
        default: nextSoon();
    }
}

/* ========================= 作业处理 ========================= */
function missonHomeWork() { logger('处理作业', 'green'); var form = $('.mark_table form'); var list = form.find('.questionLi'); doHomeWork(0, list); }
function doHomeWork(index, TiMuList) {
    if (isPaused()) { setTimeout(function () { doHomeWork(index, TiMuList); }, 3000); return; }
    if (index >= TiMuList.length) { logger('作业全部完成', 'green'); return; }
    var typeName = $(TiMuList[index]).attr('typename') || $(TiMuList[index]).find('.colorShallow').text() || '';
    var m = typeName.match(/(单选题|多选题|填空题|判断题|简答题|写作题|翻译题)/);
    if (m) typeName = m[1];
    var type = _typeMap[typeName];
    var qFull = $(TiMuList[index]).find('.mark_name').html() || '', question = tidyQuestion(qFull).replace(/^[(].*?[)]/, '').trim();
    _currentQuestionMeta = { index: index, total: TiMuList.length, typeName: typeName };
    if (type === undefined) {
        var opts = $(TiMuList[index]).find('.stem_answer .answer_p'), ta = $(TiMuList[index]).find('.stem_answer textarea');
        if (opts.length > 0) type = $(TiMuList[index]).find('.stem_answer input[type="checkbox"]').length > 0 ? 1 : 0;
        else if (ta.length > 0) type = 4;
        else { logger('未知题型:' + typeName, 'red'); return setTimeout(function () { doHomeWork(index+1, TiMuList); }, setting.time); }
    }
    function nextQ() { setTimeout(function () { doHomeWork(index+1, TiMuList); }, setting.time); }
    switch (type) {
        case 0: { var ans = $(TiMuList[index]).find('.stem_answer .answer_p'); if (!ans.length) return nextQ(); var merged = []; ans.each(function () { merged.push($(this).text().replace(/[ABCD]/g,'').trim()); }); question = buildPrompt({ type:'单选题', question:question, options:merged }); getAnswer(type, question).then(function (agrs) { if (gmGet('alterTitle') !== 'false') $(TiMuList[index]).find('.mark_name').append('<p></p>' + agrs); var opts = []; ans.each(function (i, t) { opts.push(tidyStr($(t).html())); }); var idx = opts.indexOf(agrs); if (idx === -1) idx = findBestFuzzyMatch(opts, agrs); if (idx !== -1) { var cls = $(ans[idx]).parent().find('span').attr('class')||''; if (cls.indexOf('check_answer') === -1) $(ans[idx]).parent().click(); } nextQ(); }).catch(function () { nextQ(); }); break; }
        case 1: { var ans = $(TiMuList[index]).find('.stem_answer .answer_p'); if (!ans.length) return nextQ(); var merged = []; ans.each(function () { merged.push($(this).text().replace(/[ABCD]/g,'').trim()); }); question = buildPrompt({ type:'多选题', question:question, options:merged, answer_format:"用'|'分割多个答案" }); getAnswer(type, question).then(function (agrs) { if (gmGet('alterTitle') !== 'false') $(TiMuList[index]).find('.mark_name').append('<p></p>' + agrs); var opts = []; ans.each(function (i, t) { opts.push(tidyStr($(t).html())); }); ans.each(function (i, t) { if (agrs.indexOf(opts[i]) !== -1) { var cls = $(ans[i]).parent().find('span').attr('class')||''; if (cls.indexOf('check_answer_dx') === -1) $(ans[i]).parent().click(); } }); var fuzzy = findFuzzyMatchMultiple(opts, agrs); for (var fi = 0; fi < fuzzy.length; fi++) { (function(idx) { var cls = $(ans[idx]).parent().find('span').attr('class')||''; if (cls.indexOf('check_answer_dx') === -1) $(ans[idx]).parent().click(); })(fuzzy[fi]); } nextQ(); }).catch(function () { nextQ(); }); break; }
        case 2: { question = buildPrompt({ type:'填空题', question:question, answer_format:"用'|'分割多个答案" }); var textareas = findAnswerTextareas($(TiMuList[index])); if (!textareas.length) { logger('未找到填空区域', 'red'); return nextQ(); } getAnswer(type, question).then(function (agrs) { var parts = agrs.split('|'); textareas.each(function (i, t) { setTimeout(function () { try { UE.getEditor($(t).attr('id')||$(t).attr('name')).setContent(parts[i]||parts[0]||agrs); } catch (e) {} }, 300 + i*200); }); setTimeout(function () { doHomeWork(index+1, TiMuList); }, setting.time + 200*textareas.length); }); break; }
        case 3: { var ans = $(TiMuList[index]).find('.stem_answer .answer_p'); if (!ans.length) return nextQ(); question = buildPrompt({ type:'判断题', question:question, answer_format:"只回答正确或错误" }); getAnswer(type, question).then(function (agrs) { if (gmGet('alterTitle') !== 'false') $(TiMuList[index]).find('.mark_name').append('<p></p>' + agrs); var opts = []; ans.each(function (i, t) { opts.push($(t).text().trim()); }); var judge = parseJudgeAnswer(agrs); if (judge !== null) { var idx = findJudgeOptionIndex(opts, judge === 'true'); if (idx !== -1) $(ans[idx]).parent().click(); } nextQ(); }); break; }
        case 4: case 5: case 6: { var textareas = findAnswerTextareas($(TiMuList[index])); if (!textareas.length) { logger('未找到答题区域', 'red'); return nextQ(); } var types = {4:'简答题',5:'写作题',6:'翻译题'}, fmts = {4:'用50字简要回答',5:'用英文根据题目进行写作',6:'中文英文互译'}; var p = buildPrompt({ type:types[type]||typeName, question:question, answer_format:fmts[type]||'简要回答' }); getAnswer(type, p).then(function (agrs) { textareas.each(function (i, t) { setTimeout(function () { try { UE.getEditor($(t).attr('id')||$(t).attr('name')).setContent(agrs); } catch (e) {} }, 300 + i*200); }); setTimeout(function () { doHomeWork(index+1, TiMuList); }, setting.time + 200*textareas.length); }); break; }
        default: nextQ();
    }
}

/* ========================= 字体解密 ========================= */
function base64ToUint8Array(base64) { var data = window.atob(base64); var buffer = new Uint8Array(data.length); for (var i = 0; i < data.length; ++i) buffer[i] = data.charCodeAt(i); return buffer; }
function decryptFont() {
    var $tip = $('style:contains(font-cxsecret)');
    if (!$tip.length) return;
    try {
        var fontBase64 = $tip.text().match(/base64,([\w\W]+?)'/)[1];
        if (typeof Typr === 'undefined') return;
        var font = Typr.parse(base64ToUint8Array(fontBase64))[0];
        var table = JSON.parse(GM_getResourceText('Table'));
        var match = {};
        for (var i = 19968; i < 40870; i++) {
            $tip = Typr.U.codeToGlyph(font, i);
            if (!$tip) continue;
            $tip = Typr.U.glyphToPath(font, $tip);
            $tip = md5(JSON.stringify($tip)).slice(24);
            match[i] = table[$tip];
        }
        $('.font-cxsecret').html(function (index, html) {
            $.each(match, function (key, value) {
                key = String.fromCharCode(key);
                key = new RegExp(key, 'g');
                value = String.fromCharCode(value);
                html = html.replace(key, value);
            });
            return html;
        }).removeClass('font-cxsecret');
    } catch (e) {}
}

/* ========================= UI 浮窗 ========================= */
function loadPresets() { try { return JSON.parse(gmGet('presets') || '[]'); } catch(e) { return []; } }
function savePresets(arr) { try { gmSet('presets', JSON.stringify(arr)); } catch(e) {} }
function buildPresetOptions() {
    var presets = loadPresets();
    var html = '<option value="">-- 选择预设 --</option>';
    for (var i = 0; i < presets.length; i++) { html += '<option value="' + i + '">' + presets[i].name.replace(/"/g,'&quot;') + '</option>'; }
    return html;
}
function applyPreset(idx) {
    var presets = loadPresets();
    if (!presets[idx]) return;
    var p = presets[idx];
    $('#sa-set-provider').val(p.provider || 'ollama');
    $('#sa-set-url').val(p.url || '');
    $('#sa-set-model').val(p.model || '');
    $('#sa-set-key').val(p.key || '');
    logger('已加载预设: ' + p.name, 'green');
}

/* ========================= 版本更新检查 ========================= */




function showBox() {
    if (!setting.showBox) return;
    if (top.document.querySelector('#sa-box') !== null) return;

    if (!top.document.getElementById('sa-style')) {
        var style = top.document.createElement('style');
        style.id = 'sa-style';
        style.textContent = '#sa-box{position:fixed;top:5%;right:5%;width:340px;z-index:99999;font-family:-apple-system,BlinkMacSystemFont,\"SF Pro Text\",\"Segoe UI\",\"PingFang SC\",\"Microsoft YaHei\",sans-serif;font-size:13px;color:#1e293b;background:rgba(255,255,255,.92);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.7);border-radius:20px;box-shadow:0 20px 48px -12px rgba(0,0,0,.3);overflow:hidden;}#sa-box .sa-header{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:rgba(255,255,255,.6);border-bottom:1px solid rgba(0,0,0,.06);cursor:move;user-select:none;}#sa-box .sa-title{font-weight:600;font-size:14px;display:flex;align-items:center;gap:8px;}#sa-box .sa-dot{width:8px;height:8px;border-radius:50%;background:#22c55e;display:inline-block;}#sa-box .sa-actions{display:flex;gap:6px;}#sa-box .sa-btn{border-radius:50%;border:1px solid rgba(0,0,0,.1);background:#fff;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;color:#475569;width:24px;height:24px;font-size:14px;padding:0;}#sa-box .sa-btn:hover{background:#f1f5f9;}#sa-box .sa-body{padding:12px 14px;}#sa-box .sa-info{font-size:12px;color:#64748b;margin-bottom:8px;padding:6px 10px;background:rgba(255,255,255,.5);border-radius:10px;}#sa-box .sa-info b{color:#1e293b;}#sa-box .sa-settings{background:rgba(255,255,255,.85);border-radius:12px;padding:10px 12px;margin:8px 0;font-size:12px;border:1px solid rgba(0,0,0,.06);}#sa-box .sa-settings label{display:flex;flex-direction:column;margin-bottom:6px;font-size:11px;color:#475569;}#sa-box .sa-settings input[type=text],#sa-box .sa-settings input[type=password],#sa-box .sa-settings select{margin-top:3px;padding:4px 8px;border-radius:8px;border:1px solid #ddd;font-size:12px;}#sa-box .sa-settings input[type=checkbox]{accent-color:#2563eb;margin:0;}#sa-box .sa-settings .sa-grid{display:grid;grid-template-columns:1fr 1fr;gap:6px;}#sa-box .sa-settings .sa-grid label{flex-direction:row;align-items:center;gap:6px;cursor:pointer;display:flex;flex-direction:row;}#sa-box .sa-settings .sa-save-btn,#sa-box .sa-settings .sa-test-btn{width:100%;padding:6px;border-radius:10px;border:none;cursor:pointer;font-size:12px;margin-top:4px;}#sa-box .sa-settings .sa-save-btn{background:#2563eb;color:#fff;}#sa-box .sa-settings .sa-test-btn{background:#22c55e;color:#fff;margin-left:4px;flex:1;}#sa-box #sa-log{max-height:140px;overflow-y:auto;padding:8px 10px;background:rgba(0,0,0,.04);border-radius:12px;font-family:monospace;font-size:11px;line-height:1.6;color:#475569;}#sa-box #sa-log:empty{display:none;}#sa-box #sa-log p{margin:0;padding:2px 0;word-break:break-all;}#sa-box #sa-log .sa-time{color:#94a3b8;margin-right:6px;}#sa-box .sa-spinner{display:inline-block;width:8px;height:8px;margin-right:4px;border:1.5px solid #cbd5e1;border-top-color:#475569;border-radius:50%;animation:sa-spin .8s linear infinite;vertical-align:-1px;}@keyframes sa-spin{to{transform:rotate(360deg)}}';
        top.document.head.appendChild(style);
    }

    var uid = getCk('_uid') || getCk('UID') || '-';
    var curModel = (gmGet('apiModel') || setting.apiModel || '未设置');
    
    var boxHtml = '<div id="sa-box"><div class="sa-header"><span class="sa-title"><span class="sa-dot"></span>学习通助手 v' + SCRIPT_VERSION + '</span><div class="sa-actions"><button class="sa-btn" id="sa-pause-btn" title="暂停/继续">⏸</button><button class="sa-btn" id="sa-close-btn" title="收起">−</button></div></div><div class="sa-body"><div class="sa-info">学习通账号 UID：<b>' + uid + '</b></div><div style="display:flex;align-items:center;gap:8px;margin:0 0 6px 0;"><span style="flex:1;font-size:12px;color:#475569;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;">🤖 ' + curModel + '</span><button id="sa-settings-btn" style="padding:5px 10px;border-radius:10px;border:1px solid #d1d5db;background:#fff;font-size:12px;cursor:pointer;white-space:nowrap;">⚙ 设置</button><button id="sa-update-btn" style="padding:5px 8px;border-radius:10px;border:1px solid #f59e0b;background:#fff;color:#f59e0b;font-size:12px;cursor:pointer;">🔄</button></div><div id="sa-settings-panel" class="sa-settings" style="display:none;"></div><div id="sa-log"></div></div></div>';
    $(boxHtml).appendTo('body');
    // 检查更新按钮事件（必须在面板创建时就绑定，不能等打开设置）
    $('#sa-update-btn').off('click').on('click', function () {
        logger('正在检查更新...', 'blue');
        GM_xmlhttpRequest({
            method: 'GET',
            url: 'https://scriptcat.org/api/v2/scripts/6637',
            timeout: 10000,
            onload: function (xhr) {
                if (xhr.status == 200) {
                    try {
                        var data = JSON.parse(xhr.responseText);
                        var latest = data.data && data.data.script && data.data.script.version;
                        if (!latest) { logger('未获取到版本信息', 'orange'); return; }
                        var cur = SCRIPT_VERSION.split('.').map(Number);
                        var lat = latest.split('.').map(Number);
                        var newer = false;
                        for (var i = 0; i < Math.max(cur.length, lat.length); i++) {
                            var cv = cur[i]||0, lv = lat[i]||0;
                            if (lv > cv) { newer = true; break; }
                            if (lv < cv) break;
                        }
                        if (newer) { logger('🎉 发现新版本 v' + latest + '！请到脚本管理器更新', 'green'); }
                        else { logger('✓ 当前 v' + SCRIPT_VERSION + ' 已是最新版', 'green'); }
                    } catch (e) { logger('解析失败: ' + e.message, 'red'); }
                } else { logger('检查更新失败: HTTP ' + xhr.status, 'red'); }
            },
            onerror: function () { logger('检查更新失败: 网络错误', 'red'); },
            ontimeout: function () { logger('检查更新超时', 'red'); }
        });
    });
    try { var sp = gmGet('boxPos'); if (sp) { var pp = JSON.parse(sp); $('#sa-box').css({left:pp.left+'px',top:pp.top+'px',right:'auto'}); } } catch (_) {}

    (function syncPause() { var paused = isPaused(); $('#sa-pause-btn').text(paused ? '▶' : '⏸').attr('title', paused ? '已暂停' : '运行中'); })();
    $('#sa-pause-btn').click(function () { var p = !isPaused(); gmSet('isPaused', p); $(this).text(p ? '▶' : '⏸').attr('title', p ? '已暂停' : '运行中'); logger(p ? '已暂停' : '已恢复', 'orange'); });

    $('#sa-close-btn').click(function () {
        var collapsed = $('#sa-box').hasClass('sa-collapsed');
        if (collapsed) { $('#sa-box').removeClass('sa-collapsed').find('.sa-body').show(); $(this).text('−'); }
        else { $('#sa-box').addClass('sa-collapsed').find('.sa-body').hide(); $(this).text('+'); }
    });

    // 重做/题目列表按钮
    var settingsVisible = false;
    function buildSettingsPanel() {
        var cp = 'custom';
        var curUrl = gmGet('apiUrl') || '';
        var curModel = gmGet('apiModel') || '';
        var curKey = gmGet('apiKey') || '';
        var presetOpts = buildPresetOptions();
        var panelHtml = '<label style="flex-direction:row;align-items:center;gap:8px;">预设 <select id="sa-preset-select" style="flex:1;padding:3px 6px;border-radius:8px;border:1px solid #ddd;font-size:12px;">' + presetOpts + '</select>'
            + '<button id="sa-preset-del" style="padding:3px 8px;border-radius:8px;border:1px solid #ddd;background:#fff;cursor:pointer;font-size:11px;">✕</button></label>'
            + '<hr style="margin:6px 0;border:0;border-top:1px dashed #ddd;">'
            + '<label>Provider <select id="sa-set-provider"><option value="ollama">Ollama</option><option value="custom">自定义</option></select></label>'
            + '<label>URL <input id="sa-set-url" value="' + curUrl.replace(/"/g,'&quot;') + '"></label>'
            + '<label>Model <input id="sa-set-model" value="' + curModel.replace(/"/g,'&quot;') + '"></label>'
            + '<label>API Key <input id="sa-set-key" type="password" value="' + curKey.replace(/"/g,'&quot;') + '" placeholder="仅 OpenAI/自定义需要"></label>'
            + '<hr style="margin:6px 0;border:0;border-top:1px dashed #ddd;">'
            + '<div class="sa-grid">'
            + '<label><input type="checkbox" id="sa-set-good"' + (gmGet('goodStudent')==='true'?' checked':'') + '>好学生</label>'
            + '<label><input type="checkbox" id="sa-set-sub"' + (gmGet('sub')==='true'?' checked':'') + '>自动提交</label>'
            + '<label><input type="checkbox" id="sa-set-turn"' + (gmGet('examTurn')==='true'?' checked':'') + '>考试跳转</label>'

            + '<label><input type="checkbox" id="sa-set-bank"' + (gmGet('useBank')!=='false'?' checked':'') + '>本地题库</label>'
            + '<label><input type="checkbox" id="sa-set-force"' + (gmGet('force')==='true'?' checked':'') + '>强制提交</label>'
            + '<label><input type="checkbox" id="sa-set-fuzzy"' + (gmGet('fuzzyMatch')!=='false'?' checked':'') + '>相似度匹配</label>'

            + '</div>'
            + '<hr style="margin:6px 0;border:0;border-top:1px dashed #ddd;">'
            + '<div style="display:flex;gap:8px;margin:8px 0;">'
            + '<button id="sa-bank-btn" style="flex:1;padding:5px 4px;border-radius:10px;border:1px solid #ddd;background:#fff;cursor:pointer;font-size:11px;">📚 题库统计</button>'
            + '<button id="sa-export-bank-btn" style="flex:1;padding:5px 4px;border-radius:10px;border:1px solid #2563eb;background:#fff;color:#2563eb;cursor:pointer;font-size:11px;">💾 导出</button>'
            + '<button id="sa-import-bank-btn" style="flex:1;padding:5px 4px;border-radius:10px;border:1px solid #059669;background:#fff;color:#059669;cursor:pointer;font-size:11px;">📥 导入</button>'
            + '<button id="sa-clear-bank-btn" style="flex:1;padding:5px 4px;border-radius:10px;border:1px solid #ddd;background:#fff;cursor:pointer;font-size:11px;">🗑 清空题库</button>'
            + '</div>'
            + '<div id="sa-bank-list" style="display:none;max-height:120px;overflow-y:auto;margin:4px 0;padding:6px 8px;background:rgba(0,0,0,.04);border-radius:8px;font-size:11px;line-height:1.5;"></div>'
            + '<label style="flex-direction:row;align-items:center;gap:8px;margin-top:4px;">答题间隔 <input type="number" id="sa-set-time" style="width:60px;padding:3px 6px;border-radius:6px;border:1px solid #ddd;font-size:12px;" min="0" max="60" step="0.5" value="' + ((gmGet('time') || setting.time/1000 || 2.5)) + '"> 秒</label>'
            + '<div style="display:flex;gap:8px;margin-top:8px;">'
            + '<button class="sa-save-btn">保存设置</button>'
            + '<button id="sa-save-preset-btn" style="flex:0.6;padding:6px;border-radius:10px;border:1px solid #2563eb;background:#fff;color:#2563eb;cursor:pointer;font-size:12px;">+ 存为预设</button>'
            + '<button class="sa-test-btn">测试连接</button>'
            + '</div>';
        $('#sa-settings-panel').html(panelHtml);

        $('#sa-preset-select').off('change').on('change', function() { var idx = $(this).val(); if (idx !== '') applyPreset(parseInt(idx)); });
        $('#sa-preset-del').off('click').on('click', function() {
            var idx = $('#sa-preset-select').val();
            if (idx === '') { logger('请先选择一个预设', 'orange'); return; }
            var presets = loadPresets(); presets.splice(parseInt(idx), 1); savePresets(presets);
            $('#sa-preset-select').val('').html(buildPresetOptions()); logger('预设已删除', 'orange');
        });
        $('#sa-save-preset-btn').off('click').on('click', function() {
            var name = prompt('预设名称：'); if (!name || name.trim() === '') return;
            var presets = loadPresets(); presets.push({ name: name.trim(), provider: $('#sa-set-provider').val(), url: $('#sa-set-url').val(), model: $('#sa-set-model').val(), key: $('#sa-set-key').val() });
            savePresets(presets); $('#sa-preset-select').html(buildPresetOptions()).val(String(presets.length - 1)); logger('预设已保存: ' + name, 'green');
        });
        $('.sa-test-btn').off('click').on('click', function() {
            var url = $('#sa-set-url').val(); var model = $('#sa-set-model').val(); var key = $('#sa-set-key').val();
            if (!url) { logger('请先填写 API URL', 'red'); return; }
            logger('测试连接: ' + url + ' [' + model + ']', 'blue');
            var isOllama = /\/api\/(generate|chat)/.test(url);
            var body = isOllama ? JSON.stringify({model:model, prompt:'ping', stream:false}) : JSON.stringify({model:model, messages:[{role:'user', content:'ping'}], stream:false});
            var headers = { 'Content-Type': 'application/json' };
            if (key) headers['Authorization'] = 'Bearer ' + key;
            GM_xmlhttpRequest({
                method:'POST', url:url, headers:headers, data:body, timeout:10000,
                onload: function(xhr) { if (xhr.status === 200) { logger('连接成功! (' + xhr.status + ')', 'green'); try { var r = JSON.parse(xhr.responseText); logger('模型: ' + (r.model || 'OK'), 'green'); } catch(e) {} } else { logger('HTTP ' + xhr.status + ' - 检查URL/模型名', 'red'); } },
                onerror: function() { logger('无法连接 - 服务未运行或地址不对', 'red'); },
                ontimeout: function() { logger('超时 - 检查网络和防火墙', 'red'); }
            });
        });
        $('#sa-bank-btn').off('click').on('click', function() {
            var bankData = JSON.parse(gmGet('questionBank') || '{}'); var keys = Object.keys(bankData); var $list = $('#sa-bank-list');
            if (keys.length === 0) { $list.html('<div style="color:#888;text-align:center;padding:10px;">暂无题目</div>').toggle(); return; }
            if ($list.is(':visible')) { $list.hide(); return; }
            var types = {}; for (var bk in bankData) { var t = bankData[bk].type || '未知'; types[t] = (types[t]||0) + 1; }
            var h = '<div style="text-align:center;padding:4px 0;"><span style="font-size:24px;font-weight:700;color:#2563eb;">' + keys.length + '</span><span style="font-size:12px;color:#888;margin-left:4px;">道</span></div><div style="text-align:center;font-size:11px;color:#888;">';
            var first = true; for (var t in types) { if (!first) h += ' | '; h += '<b>' + t + '</b>: ' + types[t] + '题'; first = false; } h += '</div>';
            $list.html(h).show(); logger('题库共 ' + keys.length + ' 题', 'green');
        });
        $('#sa-clear-bank-btn').off('click').on('click', function() { if (confirm('确认清空本地题库？')) { gmSet('questionBank', '{}'); $('#sa-bank-list').hide(); logger('题库已清空', 'orange'); } });
        // 导出 BAK
        $('#sa-export-bank-btn').off('click').on('click', function() {
            var bankData = getBank();
            var keys = Object.keys(bankData);
            if (keys.length === 0) { logger('题库为空，无可导出', 'orange'); return; }
            var bak = {
                exportTime: new Date().toLocaleString(),
                version: SCRIPT_VERSION,
                total: keys.length,
                data: bankData
            };
            var json = JSON.stringify(bak, null, 2);
            var blob = new Blob([json], { type: 'application/json;charset=utf-8' });
            var url = URL.createObjectURL(blob);
            var a = document.createElement('a');
            a.href = url;
            a.download = 'chaoxing-bank-' + new Date().toISOString().slice(0,10) + '.bak';
            document.body.appendChild(a);
            a.click();
            document.body.removeChild(a);
            URL.revokeObjectURL(url);
            logger('已导出 ' + keys.length + ' 题到 .bak 文件', 'green');
        });
        // 导入（兼容多种格式）
        $('#sa-import-bank-btn').off('click').on('click', function() {
            var input = document.createElement('input');
            input.type = 'file';
            input.accept = '.bak,.json,.txt';
            input.onchange = function(e) {
                var file = e.target.files[0];
                if (!file) return;
                var reader = new FileReader();
                reader.onload = function(ev) {
                    try {
                        var raw = ev.target.result;
                        var obj = null;
                        try { obj = JSON.parse(raw); } catch (e1) {
                            // LZ-String 解压尝试
                            if (typeof LZString !== 'undefined') {
                                try {
                                    var d = LZString.decompressFromEncodedURIComponent(raw) || LZString.decompress(raw) || LZString.decompressFromBase64(raw);
                                    if (d) { obj = JSON.parse(d); logger('检测到 LZ 压缩格式，已解压', 'blue'); }
                                } catch (e2) {}
                            }
                        }
                        if (!obj) { logger('无法解析文件格式', 'red'); return; }
                        var imported = null;
                        // 格式1: 标准 bak 格式 { exportTime, version, data: { ... } }
                        if (obj.data && typeof obj.data === 'object' && !Array.isArray(obj.data)) {
                            imported = obj.data;
                        }
                        // 格式2: 标准 bak 格式 { exportTime, version, data: [...] }
                        else if (obj.data && Array.isArray(obj.data)) {
                            imported = {};
                            for (var di = 0; di < obj.data.length; di++) {
                                var item = obj.data[di];
                                var key = item.key || (md5 ? md5(item.text || item.question || '') : (item.text || item.question || ''));
                                if (key) imported[key] = {text: item.text || item.question, options: item.options, answer: item.answer, type: item.type, savedAt: Date.now()};
                            }
                        }
                        // 格式3: 裸题库 { md5hash: { text, options, answer, type } }
                        else if (obj[Object.keys(obj)[0]] && obj[Object.keys(obj)[0]].answer !== undefined) {
                            imported = obj;
                        }
                        // 格式4: 含 questionBank 字段（某些打包格式）
                        else if (obj.questionBank) {
                            var inner = obj.questionBank;
                            if (typeof inner === 'string') inner = JSON.parse(inner);
                            imported = inner;
                        }
                        // 格式5: 数组 [{ question, answer, options }]
                        else if (Array.isArray(obj)) {
                            imported = {};
                            for (var ai = 0; ai < obj.length; ai++) {
                                var it = obj[ai];
                                var k = it.key || (md5 ? md5(it.text || it.question || '') : (it.text || it.question || ''));
                                if (k) imported[k] = {text: it.text || it.question, options: it.options, answer: it.answer, type: it.type, savedAt: Date.now()};
                            }
                        }
                        if (!imported || Object.keys(imported).length === 0) {
                            logger('无法解析文件格式', 'red'); return;
                        }
                        // 合并到现有题库
                        var current = getBank();
                        var before = Object.keys(current).length;
                        for (var k in imported) {
                            if (imported[k] && imported[k].answer) {
                                current[k] = imported[k];
                            }
                        }
                        var added = Object.keys(current).length - before;
                        saveBank(current);
                        logger('导入完成：新增 ' + added + ' 题，共 ' + Object.keys(current).length + ' 题', 'green');
                    } catch (er) {
                        logger('导入失败: ' + er.message, 'red');
                    }
                };
                reader.readAsText(file);
            };
            input.click();
        });
        // 版本更新检查
        $('#sa-set-provider').val(cp).change(function () {
            var v = $(this).val();
            var u = {ollama:'http://127.0.0.1:11434/api/generate',custom:''};
            var mm = {ollama:'qwen3.5:0.8b',custom:gmGet('apiModel')||''};
            var kk = {ollama:'',custom:gmGet('apiKey')||''};
            $('#sa-set-url').val(u[v]||''); $('#sa-set-model').val(mm[v]||''); $('#sa-set-key').val(kk[v]||'');
        });
        $('.sa-save-btn').off('click').on('click', function () {
            gmSet('apiUrl', $('#sa-set-url').val()); gmSet('apiModel', $('#sa-set-model').val()); gmSet('apiKey', $('#sa-set-key').val());

            gmSet('goodStudent', $('#sa-set-good').is(':checked')?'true':'false'); gmSet('sub', $('#sa-set-sub').is(':checked')?'true':'false'); gmSet('examTurn', $('#sa-set-turn').is(':checked')?'true':'false');
            gmSet('useBank', $('#sa-set-bank').is(':checked')?'true':'false'); gmSet('force', $('#sa-set-force').is(':checked')?'true':'false');
            gmSet('fuzzyMatch', $('#sa-set-fuzzy').is(':checked')?'true':'false');
            var tv = parseFloat($('#sa-set-time').val()); if (isFinite(tv) && tv >= 0) { gmSet('time', String(tv)); setting.time = tv * 1000; }
            logger('设置已保存', 'green');
        });
    }

    $('#sa-settings-btn').click(function () {
        settingsVisible = !settingsVisible;
        if (settingsVisible) { buildSettingsPanel(); $('#sa-settings-panel').show(); $(this).text('⚙ 返回'); }
        else { $('#sa-settings-panel').hide(); $(this).text('⚙ 设置'); }
    });

    (function () {
        var box = $('#sa-box'), header = box.find('.sa-header');
        var drag = false, sx, sy, sl, st;
        header.on('mousedown', function (e) {
            if (e.which !== 1 || $(e.target).closest('.sa-btn').length) return;
            drag = true; var r = box[0].getBoundingClientRect(); sx = e.clientX; sy = e.clientY; sl = r.left; st = r.top;
            box.css({left:sl+'px',top:st+'px',right:'auto'}); $('body').css('user-select','none'); e.preventDefault();
        });
        $(document).on('mousemove.sadrag', function (e) {
            if (!drag) return;
            var nx = Math.max(-300, Math.min(sl + (e.clientX - sx), window.innerWidth - 60));
            var ny = Math.max(0, Math.min(st + (e.clientY - sy), window.innerHeight - 60));
            box.css({left:nx+'px',top:ny+'px'});
        }).on('mouseup.sadrag', function () {
            if (!drag) return; drag = false; $('body').css('user-select','');
            try { var r = box[0].getBoundingClientRect(); gmSet('boxPos', JSON.stringify({left:r.left,top:r.top})); } catch (_) {}
        });
    })();
}

/* ========================= 路由 ========================= */
(function() {
    if (_l.hostname === 'i.mooc.chaoxing.com' || _l.hostname === 'i.chaoxing.com') { return; }
    if (_l.pathname === '/login') {
        showBox();
        if (setting.autoLogin) waitForJQueryElement('#phone').then(function () {
            logger('用户已设置自动登录', 'green');
            if (setting.phone.length <= 0 || setting.password.length <= 0) { logger('用户未设置登录信息', 'red'); return; }
            setTimeout(function () { $('#phone').val(setting.phone); $('#pwd').val(setting.password); $('#loginBtn').click(); }, 3000);
        });
    } else if (_l.pathname.indexOf('/mycourse/studentstudy') !== -1) {
        showBox();
        $('#sa-log', window.parent.document).html('初始化完毕！');
        setupAntiSleep();
        setupAutoRefresh();
        // 启动时检查更新
        setTimeout(checkForUpdates, 3000);
        $('.navshow').find('a:contains(体验新版)')[0] && $('.navshow').find('a:contains(体验新版)')[0].click();
    } else if (_l.pathname.indexOf('/knowledge/cards') !== -1) {
        showBox();
        

        setupAntiSleep();
        $('.navshow').find('a:contains(体验新版)')[0] && $('.navshow').find('a:contains(体验新版)')[0].click();
        try { decryptFont(); } catch (_) {}
        if (gmGet('time') !== null) { var st = parseFloat(gmGet('time')); if (isFinite(st) && st >= 0) setting.time = st * 1000; }
        var params = getTaskParams();
        var parsedParams = null;
        if (params && params !== '$mArg') { try { parsedParams = $.parseJSON(params); } catch (e) {} }
        if (!parsedParams || !parsedParams.attachments || parsedParams.attachments.length <= 0) {
            logger('无任务点', 'red'); toNext();
        } else {
            waitForJQueryElement('.wrap .ans-cc .ans-attach-ct').then(function () {
                if (top.checkJob) top.checkJob = function () { return false; };
                _domList = []; _mlist = parsedParams.attachments; _defaults = parsedParams.defaults;

                $('.wrap .ans-cc .ans-attach-ct').each(function () { _domList.push($(this).find('iframe')); });
                missonStart();
            });
        }
    } else if (_l.pathname.indexOf('/exam/test/reVersionTestStartNew') !== -1) {
        showBox();
        waitForJQueryElement('.mark_table .whiteDiv, .questionLi').then(missonExam);
    } else if (_l.pathname.indexOf('/mooc2/exam/preview') !== -1) {
        showBox();
        waitForJQueryElement('.mark_table .questionLi').then(missonExamPreview);
    } else if (_l.pathname.indexOf('/mooc2/work/dowork') !== -1) {
        showBox();
        waitForJQueryElement('.mark_table form').then(missonHomeWork);
    } else if (_l.pathname == '/mycourse/stu') {
        checkBrowser();
    } else if (_l.pathname.indexOf('/work/phone/doHomeWork') !== -1) {
        var _oldal = _w.alert; _w.alert = function (msg) { if (msg === '保存成功') return; return _oldal(msg); };
        var _oldcf = _w.confirm; _w.confirm = function (msg) { if (msg.indexOf('确认提交') !== -1 || msg.indexOf('未做完') !== -1) return true; return _oldcf(msg); };
    }
})();

})();