// ==UserScript==
// @name         强智教务系统自动评教(通用版)
// @namespace    https://scriptcat.org/
// @version      1.0
// @description  适配多所学校强智教务系统的自动评教脚本，支持一键智能评教。
// @author       小哲（Gemini-3-pro辅助开发）
// @tag          自动评教 强智教务
// @match        *://*/jsxsd/*
// @match        *://*/*jsxsd/*
// @match        http://192.168.100.7/*
// @icon         https://img.icons8.com/fluency/64/maintenance.png
// @grant        GM_addStyle
// @grant        GM_setValue
// @grant        GM_getValue
// @grant        GM_registerMenuCommand
// @run-at       document-end
// ==/UserScript==

(function() {
    'use strict';

    // --- 0. 样式定义 ---
    GM_addStyle(`
        @keyframes qzt-pulse { 0% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.7); transform: scale(1); } 70% { box-shadow: 0 0 0 15px rgba(59, 130, 246, 0); transform: scale(1.05); } 100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); transform: scale(1); } }
        .qzt-highlight-row { background-color: #eef2ff !important; border-left: 4px solid #3b82f6 !important; }
        .qzt-submit-glow { animation: qzt-pulse 2s infinite !important; outline: 3px solid #3b82f6 !important; font-weight: bold !important; }
        .qzt-btn-active { transform: scale(0.95) !important; }
        .qzt-list-unfinished { background-color: #fef2f2 !important; border-left: 4px solid #ef4444 !important; }
        .qzt-list-unfinished td { color: #b91c1c !important; }
        .qzt-dashboard-panel { position: fixed; bottom: 40px; right: 30px; z-index: 9998; background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(8px); padding: 16px; border-radius: 12px; box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05); border: 1px solid #f1f5f9; min-width: 180px; transition: opacity 0.3s ease; cursor: move; user-select: none; font-family: system-ui, sans-serif; }
        .qzt-stat-title { font-weight: 700; color: #1e293b; border-bottom: 1px solid #e2e8f0; padding-bottom: 8px; margin-bottom: 10px; font-size: 14px; display: flex; align-items: center; gap: 6px; }
        .qzt-stat-row { display: flex; justify-content: space-between; margin: 6px 0; font-size: 13px; color: #475569; }
        .qzt-stat-val { font-weight: 600; font-family: monospace; font-size: 14px; }
        .qzt-tag-ok { color: #10b981; }
        .qzt-tag-no { color: #ef4444; }
        .qzt-btn-mini { width: 100%; margin-top: 8px; padding: 4px 0; background: #e2e8f0; border: none; border-radius: 6px; cursor: pointer; color: #475569; font-size: 12px; transition: all 0.2s; }
        .qzt-btn-mini:hover { background: #3b82f6; color: white; }
        .qzt-modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); z-index: 10000; display: flex; justify-content: center; align-items: center; backdrop-filter: blur(4px); }
        .qzt-modal { background: white; padding: 24px; border-radius: 16px; width: 400px; max-width: 90%; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25); animation: qzt-fadein 0.3s ease-out; }
        @keyframes qzt-fadein { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
        .qzt-setting-row { display: flex; justify-content: space-between; align-items: center; margin: 12px 0; }
        .qzt-switch { position: relative; display: inline-block; width: 44px; height: 24px; }
        .qzt-switch input { opacity: 0; width: 0; height: 0; }
        .qzt-slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #cbd5e1; transition: .4s; border-radius: 34px; }
        .qzt-slider:before { position: absolute; content: ""; height: 18px; width: 18px; left: 3px; bottom: 3px; background-color: white; transition: .4s; border-radius: 50%; box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
        input:checked + .qzt-slider { background-color: #3b82f6; }
        input:checked + .qzt-slider:before { transform: translateX(20px); }
        .qzt-btn-base { border: none; padding: 8px 16px; border-radius: 8px; cursor: pointer; font-weight: 500; transition: opacity 0.2s; }
        .qzt-btn-save { background: #3b82f6; color: white; }
        .qzt-btn-cancel { background: #f1f5f9; color: #64748b; margin-right: 8px; }
        .qzt-select { padding: 4px 8px; border-radius: 6px; border: 1px solid #cbd5e1; outline: none; color: #475569; }
        .qzt-textarea { width: 100%; height: 80px; margin-top: 8px; padding: 8px; border: 1px solid #cbd5e1; border-radius: 8px; resize: vertical; font-size: 12px; font-family: inherit; }
        .qzt-disclaimer-text { font-size: 13px; color: #475569; line-height: 1.6; margin: 16px 0; background: #f8fafc; padding: 12px; border-radius: 8px; border: 1px dashed #cbd5e1; }
        .qzt-disclaimer-title { display: flex; align-items: center; gap: 8px; font-size: 18px; font-weight: bold; color: #0f172a; margin-bottom: 8px; }
    `);

    // --- 配置常量 ---
    const KEY_AGREE = 'qzt_agree_v3_7'; 
    const KEY_POS_BTN = 'qzt_pos_btn_v3';
    const KEY_POS_PANEL = 'qzt_pos_panel_v3';
    const KEY_SETTINGS = 'qzt_settings_v3';

    const DEFAULT_SETTINGS = { scoreMode: 'smart', autoSubmit: false, overwrite: true, customComments: '' };
    const defaultComments = {
        A: ["老师授课认真，", "教学内容丰富，", "课程设计合理，", "老师治学严谨，", "授课方式新颖，", "备课非常充分，"],
        B: ["重点突出，条理清晰，", "课堂气氛活跃，", "理论联系实际，", "讲解深入浅出，", "善于引导学生思考，", "案例详实生动，"],
        C: ["我们收获很大。", "老师很有耐心。", "是一门很好的课。", "教学效果优良。", "希望能继续保持。", "对学生非常负责。"]
    };

    let batchPageHintShown = false;

    function generateComment(customText) {
        if (customText && customText.trim().length > 0) {
            const lines = customText.split('\n').filter(l => l.trim().length > 1);
            if (lines.length > 0) return lines[Math.floor(Math.random() * lines.length)];
        }
        const getRand = (arr) => arr[Math.floor(Math.random() * arr.length)];
        return getRand(defaultComments.A) + getRand(defaultComments.B) + getRand(defaultComments.C);
    }

    const SafeStorage = {
        get: (key, def) => { try { return JSON.parse(GM_getValue(key)) || def; } catch (e) { return GM_getValue(key, def); } },
        set: (key, val) => GM_setValue(key, JSON.stringify(val))
    };

    // 升级版 showToast，支持 position 参数
    function showToast(message, duration = 4000, position = 'top') {
        const id = 'qzt-toast-' + position; // 根据位置生成不同的ID，防止互相覆盖
        const oldToast = document.getElementById(id); if (oldToast) oldToast.remove();
        
        const toast = document.createElement('div'); 
        toast.id = id; 
        toast.innerHTML = message;
        
        const styles = {
            position: 'fixed', left: '50%', transform: 'translateX(-50%)', backgroundColor: 'rgba(15, 23, 42, 0.95)',
            color: '#fff', padding: '12px 24px', borderRadius: '50px', zIndex: '2147483649', fontSize: '14px',
            boxShadow: '0 10px 25px rgba(0,0,0,0.2)', pointerEvents: 'none', textAlign: 'center', backdropFilter: 'blur(4px)'
        };

        if (position === 'top') {
            styles.top = '30px';
        } else {
            styles.bottom = '100px'; // 底部显示，避开右下角的面板
        }

        Object.assign(toast.style, styles);
        document.body.appendChild(toast); setTimeout(() => toast.remove(), duration);
    }

    function enableDrag(element, storageKey, onClickCallback = null) {
        let isDragging = false, startX, startY, initialLeft, initialTop;
        element.onmousedown = (e) => {
            if(e.button !== 0) return;
            isDragging = false; startX = e.clientX; startY = e.clientY;
            const rect = element.getBoundingClientRect(); initialLeft = rect.left; initialTop = rect.top;
            element.style.bottom = 'auto'; element.style.right = 'auto'; element.style.left = initialLeft + 'px'; element.style.top = initialTop + 'px';
            const onMove = (em) => { if(Math.abs(em.clientX - startX) > 3 || Math.abs(em.clientY - startY) > 3) { isDragging = true; element.style.left = (initialLeft + em.clientX - startX) + 'px'; element.style.top = (initialTop + em.clientY - startY) + 'px'; } };
            const onUp = () => { document.removeEventListener('mousemove', onMove); document.removeEventListener('mouseup', onUp); if(isDragging) SafeStorage.set(storageKey, { top: element.style.top, left: element.style.left }); else if(typeof onClickCallback === 'function') onClickCallback(); };
            document.addEventListener('mousemove', onMove); document.addEventListener('mouseup', onUp);
        };
    }

    // --- 核心算分 ---
    function extractScoreFromText(text) {
        if (!text) return null;
        let match = text.match(/[（(]\s*(\d+(?:\.\d+)?)\s*(?:分)?[)）]/);
        if (match) return parseFloat(match[1]);
        match = text.match(/(\d+(?:\.\d+)?)\s*分/);
        if (match) return parseFloat(match[1]);
        match = text.match(/(?:分值|权重|分数|标准分)[:：]?\s*(\d+(?:\.\d+)?)/);
        if (match) return parseFloat(match[1]);
        return null;
    }

    function getSystemTotalScore() {
        const snapshot = document.evaluate('//*[contains(text(), "选项总分")]', document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
        if (snapshot.snapshotLength > 0) {
            for (let i = 0; i < snapshot.snapshotLength; i++) {
                const node = snapshot.snapshotItem(i);
                const text = node.innerText || node.textContent;
                const match = text.match(/选项总分[:：]?\s*(\d+(?:\.\d+)?)/);
                if (match) return parseFloat(match[1]);
            }
        }
        return null;
    }

    function calculateScore(targetRadio, groupRadios, targetIndex) {
        let container = targetRadio.parentElement;
        let text = "";
        if (targetRadio.nextSibling && targetRadio.nextSibling.nodeType === 3) text += targetRadio.nextSibling.textContent;
        if (container) text += container.innerText;
        let score = extractScoreFromText(text);
        if (score !== null) return score;
        let val = parseFloat(targetRadio.value);
        if (!isNaN(val) && val >= 0 && val <= 100) return val;
        let row = container;
        while(row && row.tagName !== 'TR') row = row.parentElement;
        if (row) {
            const rowText = row.innerText;
            const maxScore = extractScoreFromText(rowText);
            if (maxScore !== null) {
                const factors = [1.0, 0.85, 0.7, 0.5, 0.3];
                let factor = factors[targetIndex] || 0.5; 
                if (groupRadios.length === 2) factor = [1.0, 0.6][targetIndex];
                return parseFloat((maxScore * factor).toFixed(1));
            }
        }
        return 0; 
    }

    // --- 业务逻辑 ---
    function runEvaluation() {
        const settings = { ...DEFAULT_SETTINGS, ...SafeStorage.get(KEY_SETTINGS, {}) };
        document.querySelectorAll('.qzt-highlight-row').forEach(el => el.classList.remove('qzt-highlight-row'));

        const radios = document.querySelectorAll('input[type="radio"]');
        const groups = {};
        radios.forEach(r => { if (!groups[r.name]) groups[r.name] = []; groups[r.name].push(r); });
        const groupNames = Object.keys(groups);

        let count = 0, totalCalculatedScore = 0;
        let randomTargetIndex = settings.scoreMode === 'smart' && groupNames.length > 3 ? Math.floor(Math.random() * groupNames.length) : -1;

        groupNames.forEach((name, index) => {
            const list = groups[name];
            if (list.length === 0) return;
            
            let targetIndex = 0;
            if (settings.scoreMode === 'smart') {
                if (index === randomTargetIndex && list.length > 1) targetIndex = 1;
            } else if (settings.scoreMode === 'mixed') {
                if (Math.random() > 0.7 && list.length > 1) targetIndex = 1;
            }

            const target = list[targetIndex];
            if (target) {
                target.click(); target.checked = true;
                const itemScore = calculateScore(target, list, targetIndex);
                count++; totalCalculatedScore += itemScore;
                if (targetIndex > 0) {
                    let p = target.parentElement;
                    while(p && p.tagName !== 'TR') p = p.parentElement;
                    if(p) p.classList.add('qzt-highlight-row');
                }
            }
        });

        document.querySelectorAll('select').forEach(s => {
            if(s.options.length > 1) {
                s.selectedIndex = 1;
                for(let i=0; i<s.options.length; i++) if(s.options[i].text.match(/优|A/)) s.selectedIndex = i;
                s.dispatchEvent(new Event('change', { bubbles: true }));
            }
        });

        document.querySelectorAll('textarea').forEach(t => {
            if (!t.value.trim() || settings.overwrite) {
                t.value = generateComment(settings.customComments);
                t.dispatchEvent(new Event('input')); t.dispatchEvent(new Event('change'));
            }
        });

        if (count > 0) {
            let modeName = settings.scoreMode === 'full' ? '全满分' : (settings.scoreMode === 'mixed' ? '随机参半' : '智能扣分');
            totalCalculatedScore = Math.round(totalCalculatedScore * 10) / 10;
            setTimeout(() => {
                const systemScore = getSystemTotalScore();
                let scoreDisplay = "";
                if (systemScore !== null) {
                    scoreDisplay = `${systemScore} (系统)`;
                } else {
                    scoreDisplay = `${totalCalculatedScore} (脚本估算)`;
                }
                let msg = `✅ 已填充 (${modeName})<br>预计得分: ${scoreDisplay}`;
                showToast(msg);
                const submitBtn = document.querySelector('#btn_xspj_bc') || Array.from(document.querySelectorAll('button, input[type="button"]')).find(b => b.value?.includes('提交') || b.innerText?.includes('提交'));
                if (submitBtn) {
                    submitBtn.scrollIntoView({ behavior: 'smooth', block: 'center' });
                    submitBtn.classList.add('qzt-submit-glow');
                    if (settings.autoSubmit) {
                        showToast("🚀 2秒后自动提交...");
                        setTimeout(() => submitBtn.click(), 2000);
                    }
                }
            }, 100);
        }
    }
    
    // --- 页面识别与处理 ---
    function processListPage() {
        const tables = document.querySelectorAll('table');
        let targetTable = null, statusColIndex = -1;
        for (const table of tables) {
            const headers = Array.from(table.querySelectorAll('th, tr:first-child td'));
            headers.forEach((cell, index) => { if (cell.innerText.includes('是否提交') || cell.innerText.includes('提交状态')) { statusColIndex = index; targetTable = table; } });
            if (targetTable) break;
        }
        if (!targetTable || statusColIndex === -1) return;
        let total = 0, finished = 0, unfinished = 0, firstUnfinishedLink = null;
        targetTable.querySelectorAll('tr').forEach(row => {
            const cells = row.querySelectorAll('td'); if (cells.length <= statusColIndex) return;
            const statusText = cells[statusColIndex].innerText.trim(); if (statusText.includes('是否提交')) return;
            total++;
            if (statusText.match(/是|yes|已提交/i)) { finished++; row.classList.remove('qzt-list-unfinished'); }
            else { unfinished++; row.classList.add('qzt-list-unfinished'); if (!firstUnfinishedLink) firstUnfinishedLink = row.querySelector('a'); }
        });
        renderDashboard(total, finished, unfinished, firstUnfinishedLink);
    }

    function processBatchPage() {
        if (batchPageHintShown) return;
        const links = Array.from(document.querySelectorAll('a'));
        const hasEntryLink = links.some(a => a.innerText.includes('进入评价'));
        const hasStatus = document.body.innerText.includes('是否提交');

        if (hasEntryLink && !hasStatus) {
            showToast("👇 点击【进入评价】才能对评价进行操作哦", 5000); // 默认顶部
            batchPageHintShown = true;
        }
    }

    function renderDashboard(total, done, todo, nextLink) {
        let panel = document.getElementById('qzt-stat-panel');
        if (!panel) {
            panel = document.createElement('div'); panel.id = 'qzt-stat-panel'; panel.className = 'qzt-dashboard-panel';
            const savedPos = SafeStorage.get(KEY_POS_PANEL, null); if (savedPos) { panel.style.top = savedPos.top; panel.style.left = savedPos.left; panel.style.bottom = 'auto'; panel.style.right = 'auto'; }
            document.body.appendChild(panel); enableDrag(panel, KEY_POS_PANEL);
        }
        const html = `
            <div class="qzt-stat-title"><span>📊</span> 评教进度 <span style="font-weight:400;font-size:11px;color:#94a3b8;margin-left:auto;">(可拖拽)</span></div>
            <div class="qzt-stat-row"><span>总课程:</span> <span class="qzt-stat-val">${total}</span></div>
            <div class="qzt-stat-row"><span>已提交:</span> <span class="qzt-stat-val qzt-tag-ok">${done}</span></div>
            <div class="qzt-stat-row"><span>未提交:</span> <span class="qzt-stat-val qzt-tag-no">${todo}</span></div>
            <div style="margin-top:8px; border-top:1px dashed #e2e8f0;"></div>
            ${todo > 0 && nextLink ? `<button id="qzt-btn-jump" class="qzt-btn-mini">⚡ 评教下一门</button>` : `<div style="text-align:center;color:#10b981;font-size:12px;margin-top:4px;">🎉 全部完成</div>`}
        `;
        if (panel.innerHTML !== html) { panel.innerHTML = html; const btn = document.getElementById('qzt-btn-jump'); if (btn && nextLink) btn.onclick = () => { showToast("正在打开课程..."); nextLink.click(); }; }
    }

    function showSettings() {
        if(document.querySelector('.qzt-modal-overlay')) return;
        const settings = { ...DEFAULT_SETTINGS, ...SafeStorage.get(KEY_SETTINGS, {}) };
        const overlay = document.createElement('div'); overlay.className = 'qzt-modal-overlay';
        overlay.innerHTML = `
            <div class="qzt-modal">
                <h3 style="margin:0 0 15px 0; color:#1e293b; border-bottom:1px solid #e2e8f0; padding-bottom:10px;">🛠️ 评教助手设置</h3>
                <div class="qzt-setting-row"><span>📊 评分模式</span><select id="set-mode" class="qzt-select"><option value="full" ${settings.scoreMode==='full'?'selected':''}>🚀 全满分 (100%)</option><option value="smart" ${settings.scoreMode==='smart'?'selected':''}>⚖️ 智能扣分 (90-95%)</option><option value="mixed" ${settings.scoreMode==='mixed'?'selected':''}>🎲 随机参半 (80-90%)</option></select></div>
                <div class="qzt-setting-row"><span>⚡ 填充后自动提交</span><label class="qzt-switch"><input type="checkbox" id="set-auto" ${settings.autoSubmit?'checked':''}><span class="qzt-slider"></span></label></div>
                <div style="margin-top:15px;"><span style="font-size:13px; font-weight:500;">📝 自定义评语库 (每行一条)</span><textarea id="set-comments" class="qzt-textarea" placeholder="例：\n老师讲课非常生动。\n(留空则使用内置库)">${settings.customComments || ''}</textarea></div>
                <div style="margin-top:20px; text-align:right;"><button class="qzt-btn-base qzt-btn-cancel">取消</button><button class="qzt-btn-base qzt-btn-save">保存配置</button></div>
            </div>`;
        document.body.appendChild(overlay);
        const close = () => overlay.remove();
        overlay.querySelector('.qzt-btn-cancel').onclick = close;
        overlay.querySelector('.qzt-btn-save').onclick = () => {
            SafeStorage.set(KEY_SETTINGS, { scoreMode: document.getElementById('set-mode').value, autoSubmit: document.getElementById('set-auto').checked, overwrite: true, customComments: document.getElementById('set-comments').value });
            showToast("✅ 设置已保存"); close();
        };
        overlay.onclick = (e) => { if(e.target === overlay) close(); };
    }
    
    // --- 免责声明功能 ---
    function showDisclaimer() {
        if(document.querySelector('.qzt-modal-overlay')) return;
        const overlay = document.createElement('div'); overlay.className = 'qzt-modal-overlay qzt-disclaimer-modal';
        overlay.innerHTML = `
            <div class="qzt-modal" style="width: 450px;">
                <div class="qzt-disclaimer-title"><span>⚠️</span> 免责声明</div>
                <div class="qzt-disclaimer-text">
                    <p>脚本作者:<b>小哲(Gemini-3-pro辅助开发)</b></p>
                    <p>1. 本脚本仅供<b>学习和技术交流</b>使用，严禁用于任何商业或非法用途。</p>
                    <p>2. 脚本提供的自动化功能仅为辅助工具，<b>请在提交前务必核对评价内容及分数</b>。</p>
                    <p>3. 使用本脚本即代表您愿意自行承担因使用而产生的所有后果。作者不对任何损失负责。</p>
                    <p>4. 点击下方“我同意并继续”即表示您已阅读并接受本声明的所有条款。</p>
                </div>
                <div style="margin-top:20px; text-align:right;">
                    <button class="qzt-btn-base qzt-btn-cancel" id="btn-disagree">不同意 (退出)</button>
                    <button class="qzt-btn-base qzt-btn-save" id="btn-agree">我同意并继续</button>
                </div>
            </div>`;
        document.body.appendChild(overlay);

        document.getElementById('btn-disagree').onclick = () => {
            overlay.innerHTML = '<div class="qzt-modal" style="text-align:center;padding:40px;">🚫<br>您拒绝了免责声明，脚本已停止运行。<br>请刷新页面重试。</div>';
        };

        document.getElementById('btn-agree').onclick = () => {
            SafeStorage.set(KEY_AGREE, true);
            // 这里指定 'bottom'，将欢迎提示显示在底部
            showToast("✅ 欢迎使用，请理性评教", 4000, 'bottom');
            overlay.remove();
            init(); 
        };
    }

    function createButton() {
        if (document.getElementById('qzt-entry-btn')) return;
        const btn = document.createElement('div'); btn.id = 'qzt-entry-btn'; btn.innerHTML = '⚡ 一键评教'; btn.title = "左键：自动填充 | 右键：设置 | 拖拽移动";
        const pos = SafeStorage.get(KEY_POS_BTN, { top: '80%', left: '85%' });
        Object.assign(btn.style, { position: 'fixed', zIndex: '9999', padding: '10px 18px', background: 'linear-gradient(135deg, #3b82f6, #2563eb)', color: '#fff', borderRadius: '50px', cursor: 'pointer', boxShadow: '0 4px 12px rgba(37,99,235,0.4)', fontWeight: '600', fontSize: '14px', top: pos.top, left: pos.left });
        enableDrag(btn, KEY_POS_BTN, () => { btn.classList.add('qzt-btn-active'); setTimeout(() => btn.classList.remove('qzt-btn-active'), 150); runEvaluation(); });
        btn.oncontextmenu = (e) => { e.preventDefault(); showSettings(); };
        document.body.appendChild(btn);
    }

    function init() { 
        const hasRadios = document.querySelectorAll('input[type="radio"]').length > 0;
        const isListPage = !!document.querySelector('table') && (document.body.innerText.includes('是否提交') || document.body.innerText.includes('提交状态'));
        const isBatchPage = Array.from(document.querySelectorAll('a')).some(a => a.innerText.includes('进入评价'));

        if (!hasRadios && !isListPage && !isBatchPage) {
            return; 
        }

        const hasAgreed = SafeStorage.get(KEY_AGREE, false);
        if (!hasAgreed) {
            if (!document.querySelector('.qzt-disclaimer-modal')) {
                showDisclaimer();
            }
            return; 
        }

        if (hasRadios) {
            createButton(); 
        } else {
            if (isListPage) processListPage();
            if (isBatchPage) processBatchPage(); 
        }
    }
    
    setTimeout(() => {
        init();
        setInterval(init, 1500); 
    }, 1000);
    
    GM_registerMenuCommand("脚本设置", showSettings);
    GM_registerMenuCommand("查看免责声明", () => { SafeStorage.set(KEY_AGREE, false); init(); });
})();