// ==UserScript==
// @name         2026年5月广东省教师继续教育专业课、公需课-自动学习、答题
// @namespace    auto-study-gds
// @version      3.2
// @description  自动播放课程视频、自动切换下一节、自动答题、防挂机检测
// @match        https://jsxx.gds.edu.cn/study/course/*
// @match        https://jsglpt.gds.edu.cn/study/course/*
// @match        https://jsxx.gds.edu.cn/*/study/course/*
// @match        https://jsglpt.gds.edu.cn/*/study/course/*
// @grant        none
// @run-at       document-idle
// ==/UserScript==

(function () {
    'use strict';

    // ============ 配置 ============
    var CONFIG = {
        VIDEO_CHECK_INTERVAL: 5000,       // 每5秒检查视频
        MOUSE_MOVE_INTERVAL: 15000,        // 每15秒移动鼠标
        SCROLL_INTERVAL: 25000,            // 每25秒微滚动
        SAFE_CLICK_INTERVAL: 45000,        // 每45秒安全点击
        QUIZ_CHECK_INTERVAL: 2000,         // 每2秒检查答题弹窗
        NEXT_VIDEO_DELAY: 10000,          // 视频结束10秒后切换
        RESUME_RETRIES: 3,                 // 恢复播放重试次数
        INIT_DELAY: 3000,                  // 页面加载后等待3秒
        MAX_LOG_LENGTH: 200,               // 日志最大条数
    };

    // 课程ID
    var COURSE_ID = (function () {
        var m = location.pathname.match(/c_([a-f0-9]{32})/i);
        return m ? 'c_' + m[1] : null;
    })();

    // ============ 日志 ============
    var LOG = [];
    function log(msg, type) {
        type = type || 'info';
        var ts = new Date().toLocaleTimeString();
        var prefix = {
            info: 'INF', warn: 'WRN', error: 'ERR', quiz: 'QUIZ', video: 'VID'
        };
        var line = '[' + ts + '] [' + (prefix[type] || 'INF') + '] ' + msg;
        console.log('[AutoStudy] ' + line);
        LOG.push(line);
        if (LOG.length > CONFIG.MAX_LOG_LENGTH) LOG.shift();
        updatePanelStatus(type + ': ' + msg);
    }

    // ============ 状态浮窗 ============
    var panelCreated = false;

    function createStatusPanel() {
        if (panelCreated || document.getElementById('_asp')) return;
        panelCreated = true;

        var panel = document.createElement('div');
        panel.id = '_asp';
        panel.style.cssText = 'position:fixed;top:10px;right:10px;z-index:999999;' +
            'background:rgba(0,0,0,0.88);color:#0f0;padding:10px 14px;border-radius:8px;' +
            'font-size:12px;font-family:Consolas,monospace;width:320px;' +
            'box-shadow:0 2px 12px rgba(0,0,0,0.4);user-select:none;';

        panel.innerHTML =
            '<div id="_aspTitle" style="font-size:13px;color:#0ff;margin-bottom:6px;">AutoStudy v3.0</div>' +
            '<div id="_aspVideo" style="color:#0f0;margin-bottom:4px;">等待视频...</div>' +
            '<div id="_aspQuiz" style="color:#ff0;margin-bottom:4px;display:none;"></div>' +
            '<div id="_aspLog" style="color:#888;font-size:10px;max-height:60px;overflow:hidden;margin-bottom:6px;"></div>' +
            '<div style="display:flex;gap:6px;">' +
            '<button id="_aspToggle" style="flex:1;padding:4px;cursor:pointer;background:#333;color:#0f0;border:1px solid #555;border-radius:4px;">暂停</button>' +
            '<button id="_aspNext" style="flex:1;padding:4px;cursor:pointer;background:#333;color:#0f0;border:1px solid #555;border-radius:4px;">下一节</button>' +
            '<button id="_aspLogToggle" style="flex:1;padding:4px;cursor:pointer;background:#333;color:#0f0;border:1px solid #555;border-radius:4px;">日志</button>' +
            '</div>';

        document.body.appendChild(panel);

        // 暂停/继续
        document.getElementById('_aspToggle').onclick = function () {
            window._autoStudyPaused = !window._autoStudyPaused;
            this.textContent = window._autoStudyPaused ? '继续' : '暂停';
            this.style.background = window._autoStudyPaused ? '#533' : '#333';
            log(window._autoStudyPaused ? '脚本已暂停' : '脚本已继续', 'warn');
        };

        // 手动下一节
        document.getElementById('_aspNext').onclick = function () {
            log('手动切换下一节', 'warn');
            forceGoToNextVideo();
        };

        // 显示/隐藏日志
        var logVisible = false;
        document.getElementById('_aspLogToggle').onclick = function () {
            logVisible = !logVisible;
            var logEl = document.getElementById('_aspLog');
            logEl.style.display = logVisible ? 'block' : 'none';
            logEl.style.maxHeight = logVisible ? '200px' : '60px';
            if (logVisible) {
                logEl.textContent = LOG.slice(-20).join('\n');
            }
        };
    }

    function updatePanelStatus(msg) {
        var el = document.getElementById('_aspLog');
        if (el && el.style.display !== 'none') {
            el.textContent = LOG.slice(-20).join('\n');
        }
    }

    function updateVideoDisplay() {
        var v = getVideo();
        var el = document.getElementById('_aspVideo');
        if (!el) return;

        if (!v || !v.duration) {
            el.textContent = '等待视频加载...';
            return;
        }

        var cur = formatTime(v.currentTime);
        var dur = formatTime(v.duration);
        var pct = (v.currentTime / v.duration * 100).toFixed(1);
        var state = v.paused ? ' || PAUSED' : v.ended ? ' || ENDED' : ' || PLAYING';
        el.textContent = cur + '/' + dur + ' (' + pct + '%)' + state;

        // 标题
        var titleEl = document.getElementById('_aspTitle');
        if (titleEl) {
            var h3 = document.querySelector('.g-studyAct-box h3');
            var name = h3 ? h3.textContent.trim().substring(0, 28) : '未知';
            titleEl.textContent = 'AutoStudy - ' + name;
        }
    }

    // ============ 防挂机 ============
    function spoofVisibility() {
        try {
            Object.defineProperty(document, 'hidden', { get: function () { return false; }, configurable: true });
        } catch (e) { }
        try {
            Object.defineProperty(document, 'visibilityState', { get: function () { return 'visible'; }, configurable: true });
        } catch (e) { }
        // 阻止 visibilitychange / blur 事件
        ['visibilitychange', 'webkitvisibilitychange'].forEach(function (evtName) {
            document.addEventListener(evtName, function (e) { e.stopImmediatePropagation(); }, true);
        });
        window.addEventListener('blur', function (e) { e.stopImmediatePropagation(); }, true);
        log('页面可见性伪装已启用');
    }

    // ============ 鼠标模拟 ============
    function simulateMouseMove(x, y) {
        var el = document.elementFromPoint(x, y);
        ['mouseenter', 'mouseover', 'mousemove'].forEach(function (type) {
            var evt = new MouseEvent(type, {
                clientX: x, clientY: y,
                bubbles: true, cancelable: true, view: window
            });
            if (el) el.dispatchEvent(evt);
            document.dispatchEvent(evt);
        });
    }

    function simulateSafeClick(x, y) {
        var el = document.elementFromPoint(x, y);
        if (!el) return;
        var tag = el.tagName.toLowerCase();
        if (['video', 'input', 'select', 'textarea', 'a', 'button'].indexOf(tag) >= 0) return;
        if (el.closest('video, input, select, textarea, a.btn, button')) return;
        ['mousedown', 'mouseup', 'click'].forEach(function (type) {
            el.dispatchEvent(new MouseEvent(type, {
                clientX: x, clientY: y,
                bubbles: true, cancelable: true, button: 0
            }));
        });
    }

    // ================================================================
    //  自动答题模块
    //  弹窗结构: .mylayer-layer > .mylayer-content > #questionDiv + <script>
    //  script 里有 finishTest() 函数，其中包含正确答案
    // ================================================================
    var _quizAnswered = false;  // 当前弹窗是否已处理过
    var _lastQuizHash = '';     // 上次答题弹窗的内容哈希，防止重复处理

    function startQuizMonitor() {
        log('启动答题监控 (间隔' + CONFIG.QUIZ_CHECK_INTERVAL + 'ms)');
        setInterval(checkQuiz, CONFIG.QUIZ_CHECK_INTERVAL);
    }

    function checkQuiz() {
        if (window._autoStudyPaused) return;

        var questionDiv = document.getElementById('questionDiv');
        var layer = document.querySelector('.mylayer-layer');
        if (!layer || !questionDiv) {
            // 没有弹窗，重置标记
            _quizAnswered = false;
            _lastQuizHash = '';
            return;
        }

        // 弹窗不可见则跳过
        if (layer.style.display === 'none') return;
        if (layer.offsetWidth === 0 && layer.style.width === '0px') return;

        // 防止重复处理同一个弹窗
        var hash = questionDiv.textContent.length + '|' + (questionDiv.querySelector('.qs-type') || {}).textContent;
        if (_quizAnswered && hash === _lastQuizHash) return;

        log('检测到答题弹窗', 'quiz');

        // 提取正确答案
        var correctAnswers = extractCorrectAnswer(questionDiv);
        if (!correctAnswers || correctAnswers.length === 0) {
            log('无法提取答案，1秒后重试', 'error');
            // 不标记为已回答，下次循环再试
            return;
        }

        _quizAnswered = true;
        _lastQuizHash = hash;

        log('正确答案: ' + correctAnswers.join(', '), 'quiz');
        doSelectAndSubmit(questionDiv, correctAnswers);
    }

    // 从弹窗附近的 <script> 中提取正确答案
    function extractCorrectAnswer(questionDiv) {
        var scripts = findNearbyScripts(questionDiv);
        if (scripts.length === 0) {
            log('未找到弹窗script标签', 'error');
            return null;
        }

        for (var s = 0; s < scripts.length; s++) {
            var code = scripts[s].textContent;

            // 模式1: if ('ChoiceX'.includes(',')) { ... } else { answerList = ['ChoiceX']; }
            var m1 = code.match(/var\s+answerList;\s*if\s*\('([^']+)'\.includes\(','\)/);
            if (m1) {
                var raw = m1[1];
                if (raw.indexOf(',') >= 0) {
                    try { return JSON.parse(raw); } catch (e) { }
                }
                return [raw];
            }

            // 模式2: answerList = ['ChoiceX', 'ChoiceY']
            var m2 = code.match(/answerList\s*=\s*\[([^\]]+)\]/);
            if (m2) {
                return m2[1].replace(/'/g, '').split(',').map(function (v) { return v.trim(); });
            }

            // 模式3: answerList = JSON.parse('["ChoiceX"]')
            var m3 = code.match(/answerList\s*=\s*JSON\.parse\('([^']+)'\)/);
            if (m3) {
                try { return JSON.parse(m3[1]); } catch (e) { }
            }
        }

        log('script中未匹配到答案模式', 'error');
        return null;
    }

    // 查找弹窗同级的 <script> 标签
    function findNearbyScripts(questionDiv) {
        // 先查兄弟节点（同级）
        var parent = questionDiv.parentElement;
        if (parent) {
            var s1 = parent.querySelectorAll('script');
            if (s1.length > 0) return s1;
        }
        // 再查祖父
        var grand = questionDiv.closest('.mylayer-layer');
        if (grand) {
            return grand.querySelectorAll('script');
        }
        // 最后查整个 body 中的所有 script，筛选包含 finishTest 的
        var all = document.querySelectorAll('script');
        var result = [];
        for (var i = 0; i < all.length; i++) {
            if (all[i].textContent.indexOf('finishTest') >= 0) {
                result.push(all[i]);
            }
        }
        return result;
    }

    // 选中答案并提交
    function doSelectAndSubmit(questionDiv, answers) {
        var container = questionDiv;
        var inputs = container.querySelectorAll('input[name="response"]');

        // 先清除所有选中
        inputs.forEach(function (input) {
            input.checked = false;
            var label = input.closest('label');
            if (label) {
                var strong = label.querySelector('strong');
                if (strong) strong.className = '';
            }
        });

        // 选中正确答案
        answers.forEach(function (ans) {
            inputs.forEach(function (input) {
                if (input.value === ans) {
                    input.checked = true;
                    // 更新UI样式
                    var label = input.closest('label');
                    if (label) {
                        var strong = label.querySelector('strong');
                        if (strong) strong.className = 'on';
                    }
                    var span = input.closest('label') ? input.closest('label').querySelector('span') : null;
                    log('选中: ' + ans + ' → ' + (span ? span.textContent.trim() : input.value), 'quiz');
                }
            });
        });

        // 等500ms让UI更新，然后提交
        setTimeout(function () {
            doSubmit(questionDiv, answers);
        }, 500);
    }

    function doSubmit(questionDiv, answers) {
        // 方法1: 直接调用全局 finishTest
        if (typeof window.finishTest === 'function') {
            try {
                window.finishTest();
                log('调用 finishTest() 提交成功', 'quiz');
                // 验证弹窗是否关闭
                setTimeout(function () {
                    var layer = document.querySelector('.mylayer-layer');
                    if (layer && layer.style.display !== 'none' && layer.offsetWidth > 0) {
                        log('弹窗未关闭，答案可能错误', 'error');
                        _quizAnswered = false; // 允许重试
                    } else {
                        log('答题弹窗已关闭，视频继续播放', 'quiz');
                        // 确保视频恢复播放
                        setTimeout(function () { resumePlay(); }, 1000);
                    }
                }, 2000);
                return;
            } catch (e) {
                log('finishTest() 调用异常: ' + e.message, 'error');
            }
        }

        // 方法2: 点击提交按钮
        var btn = questionDiv.querySelector('.u-main-btn');
        if (btn) {
            btn.click();
            log('点击提交按钮', 'quiz');
            setTimeout(function () {
                var layer = document.querySelector('.mylayer-layer');
                if (layer && layer.style.display !== 'none' && layer.offsetWidth > 0) {
                    _quizAnswered = false;
                } else {
                    setTimeout(function () { resumePlay(); }, 1000);
                }
            }, 2000);
            return;
        }

        // 方法3: 重新查找全局 finishTest（可能在 iframe 或其他作用域）
        log('未找到提交方式，尝试重写 finishTest', 'error');
        _quizAnswered = false;
    }

    // ============ 视频播放器 ============
    function getVideo() {
        return document.querySelector('video');
    }

    function getCkPlayer() {
        if (window.player) return window.player;
        // iframe 内的 player
        try {
            var iframe = document.querySelector('iframe');
            if (iframe && iframe.contentWindow && iframe.contentWindow.player) {
                return iframe.contentWindow.player;
            }
        } catch (e) { }
        return null;
    }

    function resumePlay() {
        var v = getVideo();
        if (!v || v.ended) return false;
        if (!v.paused) return true;

        // CKPlayer API
        var ck = getCkPlayer();
        if (ck) {
            try {
                if (typeof ck.videoPlay === 'function') {
                    ck.videoPlay();
                    return true;
                }
                if (typeof ck.play === 'function') {
                    ck.play();
                    return true;
                }
            } catch (e) { }
        }

        // 原生 play()
        try {
            var p = v.play();
            if (p && typeof p.catch === 'function') p.catch(function () { });
            return true;
        } catch (e) { }

        // 点击播放按钮
        var playBtn = document.querySelector('.ckplayer-play-btn');
        if (playBtn) {
            playBtn.click();
            return true;
        }

        return false;
    }

    // ============ 课程目录遍历 ============
    function getCurrentActivityId() {
        // 从URL获取
        var m = location.pathname.match(/a_([a-f0-9]{32})/i);
        if (m) return 'a_' + m[1];
        // 从DOM高亮获取
        var crt = document.querySelector('a.section.z-crt');
        if (crt) {
            var dd = crt.closest('dd[childsectionactivitieid]');
            if (dd) return dd.getAttribute('childsectionactivitieid');
        }
        return null;
    }

    function getAllActivityIds() {
        var ids = [];
        var dds = document.querySelectorAll('dd[childsectionactivitieid]');
        dds.forEach(function (dd) {
            var id = dd.getAttribute('childsectionactivitieid');
            var a = dd.querySelector('a.section');
            // 跳过考核
            if (a && a.textContent.indexOf('考核') < 0) {
                ids.push(id);
            }
        });
        return ids;
    }

    function getNextActivityId(currentId) {
        var ids = getAllActivityIds();
        var idx = ids.indexOf(currentId);
        return idx >= 0 && idx < ids.length - 1 ? ids[idx + 1] : null;
    }

    // ============ 切换下一节 ============
    var _switchingVideo = false;  // 防止重复触发切换

    function goToNextVideo() {
        if (_switchingVideo) return false;
        _switchingVideo = true;

        // 方法1: 点击"下一个活动"按钮
        var btns = document.querySelectorAll('a.btn.next');
        for (var i = 0; i < btns.length; i++) {
            if (btns[i].classList.contains('disable') || btns[i].classList.contains('disabled')) continue;
            if (btns[i].offsetWidth === 0) continue;
            btns[i].click();
            log('点击"下一个活动"按钮', 'video');
            scheduleResumeAfterSwitch();
            return true;
        }

        // 方法2: studyCourse 函数
        var curId = getCurrentActivityId();
        var nextId = getNextActivityId(curId);
        if (nextId && COURSE_ID && typeof studyCourse === 'function') {
            studyCourse(COURSE_ID, '', nextId);
            log('studyCourse 切换到: ' + nextId.substring(0, 12) + '...', 'video');
            scheduleResumeAfterSwitch();
            return true;
        }

        _switchingVideo = false;
        log('没有下一节了', 'warn');
        return false;
    }

    function forceGoToNextVideo() {
        _switchingVideo = false;
        var curId = getCurrentActivityId();
        var nextId = getNextActivityId(curId);
        if (nextId && COURSE_ID && typeof studyCourse === 'function') {
            studyCourse(COURSE_ID, '', nextId);
            log('强制切换: ' + nextId.substring(0, 12) + '...', 'video');
            scheduleResumeAfterSwitch();
        } else {
            goToNextVideo();
        }
    }

    function scheduleResumeAfterSwitch() {
        // 多次尝试恢复播放，因为新视频加载需要时间
        [5000, 8000, 12000, 18000].forEach(function (delay) {
            setTimeout(function () {
                var v = getVideo();
                if (v && v.paused && !v.ended) {
                    resumePlay();
                    log('新视频恢复播放 (delay=' + delay + 'ms)', 'video');
                }
                if (delay >= 12000) {
                    _switchingVideo = false;
                }
            }, delay);
        });
    }

    // ============ 视频结束处理 ============
    var _endHandled = false;

    function handleVideoEnd() {
        if (_endHandled) return;
        _endHandled = true;

        var v = getVideo();
        if (!v) return;

        log('视频结束: ' + formatTime(v.currentTime) + '/' + formatTime(v.duration), 'video');

        var nextId = getNextActivityId(getCurrentActivityId());
        if (!nextId) {
            log('=== 全部课程视频已播放完毕 ===', 'warn');
            var el = document.getElementById('_aspVideo');
            if (el) el.textContent = 'ALL DONE - 全部课程已完成';
            _endHandled = false;
            return;
        }

        setTimeout(function () {
            goToNextVideo();
            _endHandled = false;
        }, 3000);
    }

    // ============ 工具 ============
    function formatTime(s) {
        var m = Math.floor(s / 60);
        var sec = Math.floor(s % 60);
        return m + ':' + (sec < 10 ? '0' : '') + sec;
    }

    // ============ 主循环 ============
    var lastResumeLogTime = 0;

    function videoCheck() {
        if (window._autoStudyPaused) return;
        if (!location.href.includes('/study/course/')) return;

        var v = getVideo();
        if (!v) return;

        updateVideoDisplay();

        // 暂停 → 恢复
        if (v.paused && !v.ended) {
            var now = Date.now();
            if (now - lastResumeLogTime > 30000) {
                log('视频暂停，进度: ' + formatTime(v.currentTime) + '/' + formatTime(v.duration), 'video');
                lastResumeLogTime = now;
            }
            for (var i = 0; i < CONFIG.RESUME_RETRIES; i++) {
                if (!v.paused) break;
                resumePlay();
            }
        }

        // 结束 → 切换
        if (v.ended || (v.duration > 0 && v.currentTime >= v.duration - 3)) {
            handleVideoEnd();
        }
    }

    // ============ 防挂机定时器 ============
    function mouseAction() {
        var x = 400 + Math.floor(Math.random() * 500);
        var y = 200 + Math.floor(Math.random() * 400);
        simulateMouseMove(x, y);
        // 视频区域也移动
        var v = getVideo();
        if (v) {
            var r = v.getBoundingClientRect();
            if (r.width > 0) {
                simulateMouseMove(
                    r.left + Math.random() * r.width,
                    r.top + Math.random() * r.height
                );
            }
        }
    }

    function scrollAction() {
        var dy = Math.floor(Math.random() * 30) - 15;
        window.scrollBy(0, dy);
        setTimeout(function () { window.scrollBy(0, -dy); }, 3000);
    }

    function safeClickAction() {
        var areas = [
            function () { return { x: 100 + Math.random() * 200, y: 300 + Math.random() * 200 }; },
            function () { return { x: 500 + Math.random() * 300, y: 600 + Math.random() * 100 }; },
            function () { return { x: 800 + Math.random() * 200, y: 100 + Math.random() * 200 }; },
        ];
        var pos = areas[Math.floor(Math.random() * areas.length)]();
        simulateSafeClick(pos.x, pos.y);
    }

    // ============ 初始化 ============
    function init() {
        if (window._autoStudyRunning) {
            console.log('[AutoStudy] 已在运行');
            return;
        }
        window._autoStudyRunning = true;
        window._autoStudyPaused = false;

        console.log('[AutoStudy] v3.0 启动 | 课程ID: ' + (COURSE_ID || '未检测到'));
        log('v3.0 启动 | ' + location.pathname.substring(0, 60));

        spoofVisibility();
        createStatusPanel();

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

    function startTimers() {
        log('启动所有定时器');

        // 核心: 视频检查
        setInterval(videoCheck, CONFIG.VIDEO_CHECK_INTERVAL);

        // 防挂机
        setInterval(mouseAction, CONFIG.MOUSE_MOVE_INTERVAL + Math.random() * 10000);
        setInterval(scrollAction, CONFIG.SCROLL_INTERVAL + Math.random() * 15000);
        setInterval(safeClickAction, CONFIG.SAFE_CLICK_INTERVAL + Math.random() * 20000);

        // 进度显示
        setInterval(updateVideoDisplay, 3000);

        // 答题监控
        startQuizMonitor();

        // 首次播放
        setTimeout(function () {
            log('首次尝试播放...');
            for (var i = 0; i < 3; i++) {
                if (!getVideo() || !getVideo().paused) break;
                resumePlay();
            }
        }, CONFIG.INIT_DELAY);

        // 劫持 studyCourse: 切课自动恢复播放
        var origStudyCourse = window.studyCourse;
        if (origStudyCourse && typeof origStudyCourse === 'function') {
            window.studyCourse = function (courseId, p2, activityId) {
                log('课程切换: ' + activityId, 'video');
                _switchingVideo = true;
                _endHandled = false;
                var ret = origStudyCourse(courseId, p2, activityId);
                scheduleResumeAfterSwitch();
                return ret;
            };
            log('已劫持 studyCourse()');
        }

        // 定时状态汇报
        setInterval(function () {
            if (window._autoStudyPaused) return;
            var v = getVideo();
            if (!v || !v.duration) return;
            var curId = getCurrentActivityId();
            var ids = getAllActivityIds();
            var idx = ids.indexOf(curId);
            log('进度 ' + formatTime(v.currentTime) + '/' + formatTime(v.duration) +
                ' | 第' + (idx + 1) + '/' + ids.length + '节', 'video');
        }, 60000);

        log('就绪，开始自动学习');
    }

    init();

})();