// ==UserScript==
// @name         汉江师范学院官网助手
// @name:en      HJNU Portal Helper
// @namespace    https://www.hjnu.edu.cn/
// @version      1.0.0
// @description  汉江师范学院官网增强：通知公告新公告监控（桌面提醒）、通知/要闻聚合速览、全校快捷导航、夜间模式、文章阅读增强、链接新标签打开。
// @description:en  Enhancements for hjnu.edu.cn: new-notice monitor with desktop notification, news aggregator, quick navigation, dark mode, reading enhancements.
// @author       WorkBuddy
// @match        *://www.hjnu.edu.cn/*
// @match        *://jwc.hjnu.edu.cn/*
// @match        *://lib.hjnu.edu.cn/*
// @match        *://xxgk.hjnu.edu.cn/*
// @grant        GM_xmlhttpRequest
// @grant        GM_getValue
// @grant        GM_setValue
// @grant        GM_notification
// @grant        GM_setClipboard
// @grant        GM_registerMenuCommand
// @connect      www.hjnu.edu.cn
// @connect      jwc.hjnu.edu.cn
// @connect      lib.hjnu.edu.cn
// @connect      xxgk.hjnu.edu.cn
// @run-at       document-end
// @noframes
// @license      MIT
// ==/UserScript==

(function () {
    'use strict';

    /* ================= 常量 ================= */
    var BASE = 'https://www.hjnu.edu.cn/';
    var IS_WWW = location.hostname === 'www.hjnu.edu.cn' || location.hostname === 'hjnu.edu.cn';
    var IS_ARTICLE = /\/info\/\d+\/\d+\.htm$/.test(location.pathname);

    var URLS = {
        tzgg: BASE + 'index/tzgg.htm',   // 通知公告 (col 1045)
        hsyw: BASE + 'index/hsyw.htm',   // 汉师要闻 (col 1046)
        zhxw: BASE + 'index/zhxw.htm',   // 综合新闻 (col 1108)
        xzxs: BASE + 'index/xzxs.htm',   // 学者学术 (col 1043)
        xsxy: BASE + 'index/xsxy.htm'    // 学生学涯 (col 1044)
    };

    // 已在浏览器中逐一验证过的真实入口
    var NAV_LINKS = [
        { g: '资讯栏目', items: [
            { t: '学校首页', u: BASE },
            { t: '通知公告', u: URLS.tzgg },
            { t: '汉师要闻', u: URLS.hsyw },
            { t: '综合新闻', u: URLS.zhxw },
            { t: '学者学术', u: URLS.xzxs },
            { t: '学生学涯', u: URLS.xsxy },
            { t: '媒体汉师', u: BASE + 'index/mtgz.htm' },
            { t: '理论聚焦', u: BASE + 'index/lljj.htm' }
        ]},
        { g: '常用服务', items: [
            { t: '教务处', u: 'https://jwc.hjnu.edu.cn/' },
            { t: '教学服务(教务系统)', u: 'http://jwsys.hjnu.edu.cn/' },
            { t: '办事大厅(校内)', u: 'https://ehall.hjnu.edu.cn/default/index.html#/' },
            { t: '办事大厅(校外/WebVPN)', u: 'https://webvpn.hjnu.edu.cn/login' },
            { t: '图书馆', u: 'https://lib.hjnu.edu.cn/' },
            { t: '信息公开', u: 'https://xxgk.hjnu.edu.cn/' },
            { t: '邮箱入口', u: 'https://mail.hjnu.edu.cn/' },
            { t: '校长信箱', u: BASE + 'info/1045/11019.htm' }
        ]}
    ];

    /* ================= 设置 ================= */
    var SKEY = 'hjnu_settings_v1';
    var DEFAULTS = {
        dark: false,       // 夜间模式
        newTab: true,      // 列表文章链接新标签打开
        relTime: false,    // 显示相对时间（X天前）
        monitor: true,     // 通知公告监控
        interval: 30,      // 监控间隔（分钟）
        zoom: 1,           // 文章正文字号缩放
        ballPos: null      // 悬浮球位置
    };
    var settings = loadSettings();

    function loadSettings() {
        var s = {};
        try { s = JSON.parse(GM_getValue(SKEY, '{}')) || {}; } catch (e) { s = {}; }
        var out = {};
        Object.keys(DEFAULTS).forEach(function (k) { out[k] = (s[k] === undefined) ? DEFAULTS[k] : s[k]; });
        return out;
    }
    function saveSettings() { GM_setValue(SKEY, JSON.stringify(settings)); }

    /* ================= 工具函数 ================= */
    function fetchDoc(url) {
        return new Promise(function (resolve, reject) {
            GM_xmlhttpRequest({
                method: 'GET', url: url, timeout: 20000,
                onload: function (r) {
                    if (r.status >= 200 && r.status < 400) {
                        resolve(new DOMParser().parseFromString(r.responseText, 'text/html'));
                    } else { reject(new Error('HTTP ' + r.status)); }
                },
                onerror: function () { reject(new Error('network error')); },
                ontimeout: function () { reject(new Error('timeout')); }
            });
        });
    }

    // 解析 .n_list 列表页：li > a > time(em 年月 + span 日) + div.txt > h2 标题
    function parseColumn(doc, colId) {
        var seen = {}, out = [];
        var anchors = doc.querySelectorAll('.n_list li a[href], li a[href*="info/' + colId + '/"]');
        Array.prototype.forEach.call(anchors, function (a) {
            var raw = a.getAttribute('href') || '';
            var abs;
            try { abs = new URL(raw, BASE).href; } catch (e) { abs = raw; }
            if (seen[abs]) return;
            var m = raw.match(/info\/(\d+)\/(\d+)\.htm/);
            var id = m ? parseInt(m[2], 10) : null;
            var time = a.querySelector('time');
            var date = '';
            if (time) {
                var em = time.querySelector('em'), sp = time.querySelector('span');
                if (em && sp) date = em.textContent.trim() + '-' + sp.textContent.trim();
            }
            var h2 = a.querySelector('h2, h1');
            var title = (h2 ? h2.textContent : a.textContent).trim().replace(/\s+/g, ' ');
            if (!title) return;
            // 去掉摘要干扰：h2 存在时取 h2
            seen[abs] = 1;
            out.push({ id: id, title: title, url: abs, date: date });
        });
        return out;
    }

    function relTime(dateStr) {
        var d = new Date(String(dateStr).replace(/-/g, '/'));
        if (isNaN(d.getTime())) return null;
        var diff = Date.now() - d.getTime();
        if (diff < 0) return null;
        var days = Math.floor(diff / 86400000);
        if (days <= 0) return '今天';
        if (days === 1) return '昨天';
        if (days < 30) return days + ' 天前';
        var mo = Math.floor(days / 30);
        if (mo < 12) return mo + ' 个月前';
        return Math.floor(mo / 12) + ' 年前';
    }

    function toast(msg, ms) {
        var t = document.createElement('div');
        t.className = 'hjnu-toast';
        t.textContent = msg;
        document.body.appendChild(t);
        setTimeout(function () { t.classList.add('show'); }, 10);
        setTimeout(function () { t.classList.remove('show'); setTimeout(function () { t.remove(); }, 300); }, ms || 2600);
    }

    /* ================= 样式 ================= */
    var css = [
        // ---- 悬浮球 ----
        '#hjnu-ball{position:fixed;z-index:2147483600;right:24px;bottom:96px;width:48px;height:48px;border-radius:50%;',
        'background:linear-gradient(135deg,#1e5799,#2989d8);color:#fff;font:600 13px/48px "Microsoft YaHei",sans-serif;',
        'text-align:center;cursor:pointer;box-shadow:0 4px 14px rgba(30,87,153,.45);user-select:none;transition:transform .15s;}',
        '#hjnu-ball:hover{transform:scale(1.08);}',
        '#hjnu-ball .hjnu-badge{position:absolute;top:-4px;right:-4px;min-width:18px;height:18px;border-radius:9px;',
        'background:#e53935;color:#fff;font:600 11px/18px Arial,sans-serif;padding:0 4px;box-sizing:border-box;display:none;}',
        // ---- 面板 ----
        '#hjnu-panel{position:fixed;z-index:2147483601;right:24px;bottom:156px;width:370px;max-height:min(560px,72vh);',
        'background:#fff;border-radius:14px;box-shadow:0 12px 40px rgba(0,0,0,.22);display:none;flex-direction:column;',
        'overflow:hidden;font:14px/1.6 "Microsoft YaHei",sans-serif;color:#333;}',
        '#hjnu-panel.open{display:flex;}',
        '#hjnu-panel .hp-head{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;',
        'background:linear-gradient(135deg,#1e5799,#2989d8);color:#fff;}',
        '#hjnu-panel .hp-head b{font-size:15px;}',
        '#hjnu-panel .hp-head .hp-close{cursor:pointer;font-size:18px;opacity:.85;padding:0 4px;}',
        '#hjnu-panel .hp-head .hp-close:hover{opacity:1;}',
        '#hjnu-panel .hp-tabs{display:flex;border-bottom:1px solid #ececec;background:#fafafa;}',
        '#hjnu-panel .hp-tabs div{flex:1;text-align:center;padding:9px 0;cursor:pointer;font-size:13px;color:#666;}',
        '#hjnu-panel .hp-tabs div.on{color:#1e5799;font-weight:600;border-bottom:2px solid #1e5799;background:#fff;}',
        '#hjnu-panel .hp-body{overflow-y:auto;padding:10px 14px 14px;}',
        // ---- 导航 ----
        '#hjnu-panel .hp-nav h4{margin:10px 0 6px;font-size:12px;color:#999;font-weight:600;letter-spacing:1px;}',
        '#hjnu-panel .hp-nav .hp-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;}',
        '#hjnu-panel .hp-nav a{display:block;padding:8px 10px;border-radius:8px;background:#f2f6fa;color:#2b4f77;',
        'font-size:13px;text-decoration:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}',
        '#hjnu-panel .hp-nav a:hover{background:#e1ecf7;}',
        // ---- 资讯列表 ----
        '#hjnu-panel .hp-news .hp-sub{display:flex;justify-content:space-between;align-items:center;margin:8px 0 4px;}',
        '#hjnu-panel .hp-news .hp-sub b{font-size:13px;color:#1e5799;}',
        '#hjnu-panel .hp-news .hp-sub .hp-refresh{font-size:12px;color:#999;cursor:pointer;}',
        '#hjnu-panel .hp-news .hp-sub .hp-refresh:hover{color:#1e5799;}',
        '#hjnu-panel .hp-news ul{list-style:none;margin:0;padding:0;}',
        '#hjnu-panel .hp-news li{border-bottom:1px dashed #eee;}',
        '#hjnu-panel .hp-news li a{display:flex;gap:8px;padding:8px 2px;text-decoration:none;color:#333;font-size:13px;align-items:baseline;}',
        '#hjnu-panel .hp-news li a:hover{color:#1e5799;}',
        '#hjnu-panel .hp-news li .d{flex:none;color:#999;font-size:11px;font-family:Consolas,monospace;min-width:72px;}',
        '#hjnu-panel .hp-news li .t{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}',
        '#hjnu-panel .hp-news li .t.new{color:#c62828;}',
        '#hjnu-panel .hp-news .hp-tip{color:#999;font-size:12px;text-align:center;padding:14px 0;}',
        // ---- 设置 ----
        '#hjnu-panel .hp-set .row{display:flex;justify-content:space-between;align-items:center;padding:10px 2px;border-bottom:1px dashed #eee;font-size:13px;}',
        '#hjnu-panel .hp-set .row input[type=checkbox]{width:16px;height:16px;accent-color:#1e5799;}',
        '#hjnu-panel .hp-set .row select{padding:2px 6px;border:1px solid #ddd;border-radius:6px;font-size:12px;}',
        '#hjnu-panel .hp-set .foot{margin-top:10px;font-size:11px;color:#bbb;text-align:center;}',
        // ---- 文章阅读工具条 ----
        '#hjnu-readbar{position:fixed;z-index:2147483600;left:50%;transform:translateX(-50%);bottom:18px;display:none;',
        'gap:6px;background:rgba(20,40,60,.88);backdrop-filter:blur(6px);border-radius:24px;padding:7px 10px;}',
        '#hjnu-readbar span{color:#fff;font:12px/1 "Microsoft YaHei",sans-serif;padding:7px 10px;border-radius:16px;',
        'cursor:pointer;user-select:none;white-space:nowrap;}',
        '#hjnu-readbar span:hover{background:rgba(255,255,255,.18);}',
        // ---- 返回顶部 ----
        '#hjnu-top{position:fixed;z-index:2147483599;right:24px;bottom:40px;width:40px;height:40px;border-radius:50%;',
        'background:rgba(30,87,153,.85);color:#fff;font:600 12px/40px "Microsoft YaHei",sans-serif;text-align:center;',
        'cursor:pointer;display:none;box-shadow:0 3px 10px rgba(0,0,0,.25);}',
        '#hjnu-top:hover{background:rgba(30,87,153,1);}',
        // ---- Toast ----
        '.hjnu-toast{position:fixed;z-index:2147483647;left:50%;top:8%;transform:translateX(-50%) translateY(-8px);',
        'background:rgba(20,40,60,.92);color:#fff;padding:9px 18px;border-radius:20px;font:13px/1.4 "Microsoft YaHei",sans-serif;',
        'opacity:0;transition:all .25s;pointer-events:none;max-width:80vw;}',
        '.hjnu-toast.show{opacity:1;transform:translateX(-50%) translateY(0);}',
        // ---- 相对时间 ----
        '.hjnu-rel{color:#c62828;font-size:.85em;font-style:normal;margin-left:4px;}',
        // ---- 夜间模式 ----
        'html.hjnu-dark{filter:invert(1) hue-rotate(180deg);background:#fff;}',
        'html.hjnu-dark img,html.hjnu-dark video,html.hjnu-dark iframe,html.hjnu-dark svg,html.hjnu-dark canvas,',
        'html.hjnu-dark [style*="background-image"]{filter:invert(1) hue-rotate(180deg);}',
        'html.hjnu-dark #hjnu-ball,html.hjnu-dark #hjnu-panel,html.hjnu-dark #hjnu-readbar,html.hjnu-dark #hjnu-top,',
        'html.hjnu-dark .hjnu-toast{filter:invert(1) hue-rotate(180deg);}'
    ].join('');
    var styleEl = document.createElement('style');
    styleEl.id = 'hjnu-style';
    styleEl.textContent = css;
    document.head.appendChild(styleEl);

    /* ================= 夜间模式 ================= */
    function applyDark() {
        document.documentElement.classList.toggle('hjnu-dark', !!settings.dark);
    }
    function toggleDark() {
        settings.dark = !settings.dark;
        saveSettings();
        applyDark();
        syncSetUI();
        toast(settings.dark ? '夜间模式已开启' : '夜间模式已关闭');
    }

    /* ================= 新标签打开 ================= */
    function applyNewTab() {
        if (!settings.newTab) return;
        var links = document.querySelectorAll('a[href]');
        Array.prototype.forEach.call(links, function (a) {
            if (/\/info\/\d+\/\d+\.htm/.test(a.getAttribute('href') || '')) {
                a.target = '_blank';
                a.rel = 'noopener';
            }
        });
    }

    /* ================= 相对时间 ================= */
    function applyRelTime() {
        if (!settings.relTime) return;
        // 1) 列表页 time 结构（em 年月 + span 日）
        document.querySelectorAll('.n_list li a').forEach(function (a) {
            if (a.querySelector('.hjnu-rel')) return;
            var t = a.querySelector('time');
            if (!t) return;
            var em = t.querySelector('em'), sp = t.querySelector('span');
            if (!em || !sp) return;
            var d = em.textContent.trim() + '-' + sp.textContent.trim();
            var r = relTime(d);
            if (r) t.insertAdjacentHTML('beforeend', '<i class="hjnu-rel">' + r + '</i>');
        });
        // 2) 普通日期文本（如首页 “2026-08-24”）
        var els = document.querySelectorAll('span,em,td,p');
        var n = 0;
        for (var i = 0; i < els.length && n < 200; i++) {
            var el = els[i];
            if (el.querySelector('.hjnu-rel') || (el.parentElement && el.parentElement.querySelector('.hjnu-rel'))) continue;
            var txt = (el.textContent || '').trim();
            if (/^\d{4}-\d{2}-\d{2}$/.test(txt)) {
                var rr = relTime(txt);
                if (rr) { el.insertAdjacentHTML('beforeend', '<i class="hjnu-rel">' + rr + '</i>'); n++; }
            }
        }
    }

    /* ================= UI：悬浮球 + 面板 ================= */
    var ball, panel, badge = 0;

    function buildUI() {
        ball = document.createElement('div');
        ball.id = 'hjnu-ball';
        ball.title = '汉师助手';
        ball.innerHTML = '汉师<i class="hjnu-badge" style="display:none"></i>';
        document.body.appendChild(ball);

        panel = document.createElement('div');
        panel.id = 'hjnu-panel';
        panel.innerHTML = buildPanelHTML();
        document.body.appendChild(panel);

        // 恢复悬浮球位置
        if (settings.ballPos) {
            ball.style.left = settings.ballPos.x + 'px';
            ball.style.top = settings.ballPos.y + 'px';
            ball.style.right = 'auto';
            ball.style.bottom = 'auto';
        }

        bindBall();
        bindPanel();
    }

    function buildPanelHTML() {
        var navHtml = NAV_LINKS.map(function (g) {
            var items = g.items.map(function (it) {
                return '<a href="' + it.u + '" target="_blank" rel="noopener">' + esc(it.t) + '</a>';
            }).join('');
            return '<h4>' + esc(g.g) + '</h4><div class="hp-grid">' + items + '</div>';
        }).join('');

        return '' +
        '<div class="hp-head"><b>汉师助手</b><span class="hp-close" title="关闭">✕</span></div>' +
        '<div class="hp-tabs">' +
            '<div data-tab="nav" class="on">快捷导航</div>' +
            '<div data-tab="news">最新资讯</div>' +
            '<div data-tab="set">设置</div>' +
        '</div>' +
        '<div class="hp-body">' +
            '<div class="hp-nav" data-page="nav">' + navHtml + '</div>' +
            '<div class="hp-news" data-page="news" style="display:none">' +
                '<div class="hp-sub"><b>通知公告</b><span class="hp-refresh" data-act="refresh">刷新</span></div>' +
                '<ul id="hjnu-list-tzgg"><li class="hp-tip">加载中…</li></ul>' +
                '<div class="hp-sub"><b>汉师要闻</b></div>' +
                '<ul id="hjnu-list-hsyw"><li class="hp-tip">加载中…</li></ul>' +
            '</div>' +
            '<div class="hp-set" data-page="set" style="display:none">' +
                '<div class="row"><label>夜间模式（全站反色）</label><input type="checkbox" id="hjnu-set-dark"></div>' +
                '<div class="row"><label>文章链接新标签打开</label><input type="checkbox" id="hjnu-set-newtab"></div>' +
                '<div class="row"><label>显示相对时间（X天前）</label><input type="checkbox" id="hjnu-set-reltime"></div>' +
                '<div class="row"><label>新公告桌面提醒</label><input type="checkbox" id="hjnu-set-monitor"></div>' +
                '<div class="row"><label>检查间隔</label><select id="hjnu-set-interval">' +
                    [10, 30, 60, 120, 360].map(function (v) {
                        return '<option value="' + v + '">' + (v < 60 ? v + ' 分钟' : (v / 60) + ' 小时') + '</option>';
                    }).join('') +
                '</select></div>' +
                '<div class="row"><label>立即检查新公告</label><span style="color:#1e5799;cursor:pointer" id="hjnu-set-check">检查</span></div>' +
                '<div class="foot">汉师助手 v1.0 · 仅在 hjnu.edu.cn 站点运行</div>' +
            '</div>' +
        '</div>';
    }

    function esc(s) {
        return String(s).replace(/[&<>"']/g, function (c) {
            return { '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;' }[c];
        });
    }

    /* ---- 悬浮球：点击开面板 / 拖动移位 ---- */
    function bindBall() {
        var dragging = false, moved = false, sx = 0, sy = 0, ox = 0, oy = 0;
        ball.addEventListener('pointerdown', function (e) {
            dragging = true; moved = false;
            sx = e.clientX; sy = e.clientY;
            var r = ball.getBoundingClientRect();
            ox = r.left; oy = r.top;
            ball.setPointerCapture(e.pointerId);
        });
        ball.addEventListener('pointermove', function (e) {
            if (!dragging) return;
            var dx = e.clientX - sx, dy = e.clientY - sy;
            if (Math.abs(dx) > 4 || Math.abs(dy) > 4) {
                moved = true;
                var x = Math.max(0, Math.min(window.innerWidth - 48, ox + dx));
                var y = Math.max(0, Math.min(window.innerHeight - 48, oy + dy));
                ball.style.left = x + 'px';
                ball.style.top = y + 'px';
                ball.style.right = 'auto';
                ball.style.bottom = 'auto';
            }
        });
        ball.addEventListener('pointerup', function () {
            dragging = false;
            if (moved) {
                settings.ballPos = { x: parseInt(ball.style.left, 10), y: parseInt(ball.style.top, 10) };
                saveSettings();
            } else {
                togglePanel();
            }
        });
    }

    function togglePanel(forceOpen) {
        var open = panel.classList.contains('open');
        if (forceOpen === true || !open) {
            panel.classList.add('open');
            if (!panel.dataset.loaded) {
                panel.dataset.loaded = '1';
                loadNews();
            }
            if (badge > 0) { badge = 0; updateBadge(); }
        } else {
            panel.classList.remove('open');
        }
    }

    function updateBadge() {
        var b = ball.querySelector('.hjnu-badge');
        if (badge > 0) { b.textContent = badge > 99 ? '99+' : String(badge); b.style.display = 'block'; }
        else { b.style.display = 'none'; }
    }

    /* ---- 面板交互 ---- */
    function bindPanel() {
        panel.querySelector('.hp-close').addEventListener('click', function () { panel.classList.remove('open'); });

        panel.querySelectorAll('.hp-tabs div').forEach(function (tab) {
            tab.addEventListener('click', function () {
                panel.querySelectorAll('.hp-tabs div').forEach(function (t) { t.classList.remove('on'); });
                tab.classList.add('on');
                var name = tab.dataset.tab;
                panel.querySelectorAll('.hp-body > [data-page]').forEach(function (pg) {
                    pg.style.display = (pg.dataset.page === name) ? '' : 'none';
                });
                if (name === 'news' && !panel.dataset.loaded) { panel.dataset.loaded = '1'; loadNews(); }
            });
        });

        panel.querySelector('.hp-refresh').addEventListener('click', function () {
            GM_setValue('hjnu_news_cache', '');
            loadNews(true);
        });

        // 设置项
        var cDark = panel.querySelector('#hjnu-set-dark');
        var cNew = panel.querySelector('#hjnu-set-newtab');
        var cRel = panel.querySelector('#hjnu-set-reltime');
        var cMon = panel.querySelector('#hjnu-set-monitor');
        var sInt = panel.querySelector('#hjnu-set-interval');

        cDark.addEventListener('change', function () { settings.dark = cDark.checked; saveSettings(); applyDark(); });
        cNew.addEventListener('change', function () { settings.newTab = cNew.checked; saveSettings(); if (settings.newTab) applyNewTab(); });
        cRel.addEventListener('change', function () {
            settings.relTime = cRel.checked; saveSettings();
            if (settings.relTime) applyRelTime();
            else document.querySelectorAll('.hjnu-rel').forEach(function (el) { el.remove(); });
        });
        cMon.addEventListener('change', function () {
            settings.monitor = cMon.checked; saveSettings();
            if (settings.monitor) { GM_setValue('hjnu_last_notice_id', 0); checkNotices(true); }
            else { clearInterval(monitorTimer); }
        });
        sInt.addEventListener('change', function () {
            settings.interval = parseInt(sInt.value, 10) || 30;
            saveSettings();
            startMonitor();
            toast('检查间隔已设为 ' + (settings.interval < 60 ? settings.interval + ' 分钟' : settings.interval / 60 + ' 小时'));
        });
        panel.querySelector('#hjnu-set-check').addEventListener('click', function () { checkNotices(true); });

        syncSetUI();
    }

    function syncSetUI() {
        if (!panel) return;
        panel.querySelector('#hjnu-set-dark').checked = !!settings.dark;
        panel.querySelector('#hjnu-set-newtab').checked = !!settings.newTab;
        panel.querySelector('#hjnu-set-reltime').checked = !!settings.relTime;
        panel.querySelector('#hjnu-set-monitor').checked = !!settings.monitor;
        panel.querySelector('#hjnu-set-interval').value = String(settings.interval);
    }

    /* ================= 资讯聚合 ================= */
    var newsCache = null;
    function loadNews(force) {
        var cached = null;
        try { cached = JSON.parse(GM_getValue('hjnu_news_cache', 'null')); } catch (e) {}
        if (!force && cached && (Date.now() - cached.t) < 10 * 60 * 1000) {
            renderNews(cached.tzgg, cached.hsyw);
            return;
        }
        renderTip('tzgg', '加载中…'); renderTip('hsyw', '加载中…');
        Promise.all([
            fetchDoc(URLS.tzgg).then(function (d) { return parseColumn(d, 1045); }).catch(function () { return null; }),
            fetchDoc(URLS.hsyw).then(function (d) { return parseColumn(d, 1046); }).catch(function () { return null; })
        ]).then(function (rs) {
            var tzgg = rs[0], hsyw = rs[1];
            if (!tzgg && !hsyw) {
                renderTip('tzgg', '加载失败，请稍后刷新重试');
                renderTip('hsyw', ' ');
                return;
            }
            newsCache = { t: Date.now(), tzgg: tzgg || [], hsyw: hsyw || [] };
            GM_setValue('hjnu_news_cache', JSON.stringify(newsCache));
            renderNews(newsCache.tzgg, newsCache.hsyw);
        });
    }

    function renderTip(key, msg) {
        var ul = document.getElementById('hjnu-list-' + key);
        if (ul) ul.innerHTML = '<li class="hp-tip">' + esc(msg) + '</li>';
    }

    function renderNews(tzgg, hsyw) {
        var lastId = GM_getValue('hjnu_last_notice_id', 0);
        renderList('tzgg', tzgg.slice(0, 12), lastId);
        renderList('hsyw', hsyw.slice(0, 8), 0);
    }

    function renderList(key, items, lastId) {
        var ul = document.getElementById('hjnu-list-' + key);
        if (!ul) return;
        if (!items || !items.length) { ul.innerHTML = '<li class="hp-tip">暂无数据</li>'; return; }
        ul.innerHTML = items.map(function (it) {
            var isNew = key === 'tzgg' && it.id && lastId && it.id > lastId;
            return '<li><a href="' + esc(it.url) + '" target="_blank" rel="noopener">' +
                '<span class="d">' + esc(it.date || '') + '</span>' +
                '<span class="t' + (isNew ? ' new' : '') + '">' + (isNew ? '【新】' : '') + esc(it.title) + '</span>' +
                '</a></li>';
        }).join('');
    }

    /* ================= 新公告监控 ================= */
    var monitorTimer = null;

    function checkNotices(manual) {
        fetchDoc(URLS.tzgg).then(function (doc) {
            var items = parseColumn(doc, 1045).filter(function (i) { return i.id; });
            if (!items.length) { if (manual) toast('未解析到公告数据'); return; }
            var latestId = Math.max.apply(null, items.map(function (i) { return i.id; }));
            var known = GM_getValue('hjnu_last_notice_id', 0);
            if (!known) {
                // 首次运行：建立基线，不打扰
                GM_setValue('hjnu_last_notice_id', latestId);
                if (manual) toast('已记录当前最新公告，此后有新公告将提醒');
                return;
            }
            var fresh = items.filter(function (i) { return i.id > known; });
            if (fresh.length) {
                GM_setValue('hjnu_last_notice_id', latestId);
                badge += fresh.length;
                updateBadge();
                var text = fresh.slice(0, 3).map(function (f) { return '· ' + f.title; }).join('\n');
                if (fresh.length > 3) text += '\n…等共 ' + fresh.length + ' 条';
                try {
                    GM_notification({
                        title: '汉师助手：发现 ' + fresh.length + ' 条新公告',
                        text: text,
                        timeout: 10000,
                        onclick: function () { togglePanel(true); }
                    });
                } catch (e) {}
                toast('发现 ' + fresh.length + ' 条新公告，点击悬浮球查看');
            } else if (manual) {
                toast('暂无新公告');
            }
        }).catch(function () {
            if (manual) toast('网络请求失败，请稍后重试');
        });
    }

    function startMonitor() {
        if (monitorTimer) { clearInterval(monitorTimer); monitorTimer = null; }
        if (!settings.monitor || !IS_WWW) return;
        checkNotices(false);
        monitorTimer = setInterval(function () { checkNotices(false); }, settings.interval * 60 * 1000);
    }

    /* ================= 文章页阅读增强 ================= */
    function buildReadBar() {
        if (!IS_ARTICLE) return;
        var bar = document.createElement('div');
        bar.id = 'hjnu-readbar';
        bar.innerHTML =
            '<span data-act="minus">A−</span>' +
            '<span data-act="plus">A+</span>' +
            '<span data-act="reset">标准</span>' +
            '<span data-act="copy">复制标题链接</span>';
        document.body.appendChild(bar);

        var top = document.createElement('div');
        top.id = 'hjnu-top';
        top.textContent = '顶部';
        top.title = '返回顶部';
        document.body.appendChild(top);
        top.addEventListener('click', function () { window.scrollTo({ top: 0, behavior: 'smooth' }); });
        window.addEventListener('scroll', function () {
            top.style.display = (window.scrollY > 600) ? 'block' : 'none';
        }, { passive: true });

        bar.addEventListener('click', function (e) {
            var act = e.target.dataset && e.target.dataset.act;
            if (!act) return;
            var content = document.querySelector('.v_news_content') || document.querySelector('[id^="vsb_content_"]');
            if (!content) { toast('未找到正文区域'); return; }
            if (act === 'copy') {
                var title = (document.querySelector('h1') || { textContent: document.title }).textContent.trim();
                GM_setClipboard(title + '\n' + location.href);
                toast('已复制标题和链接');
                return;
            }
            if (act === 'reset') settings.zoom = 1;
            if (act === 'plus') settings.zoom = Math.min(1.8, +(settings.zoom + 0.1).toFixed(2));
            if (act === 'minus') settings.zoom = Math.max(0.7, +(settings.zoom - 0.1).toFixed(2));
            saveSettings();
            applyZoom(content);
            toast('字号 ' + Math.round(settings.zoom * 100) + '%');
        });

        applyZoom();
    }

    function applyZoom(content) {
        if (!IS_ARTICLE) return;
        content = content || document.querySelector('.v_news_content') || document.querySelector('[id^="vsb_content_"]');
        if (content && settings.zoom !== 1) content.style.zoom = settings.zoom;
        else if (content) content.style.zoom = '';
    }

    /* ================= 油猴菜单 ================= */
    GM_registerMenuCommand('🌙 切换夜间模式', toggleDark);
    GM_registerMenuCommand('🔔 立即检查新公告', function () { checkNotices(true); });
    GM_registerMenuCommand('⚙️ 打开助手面板', function () { togglePanel(true); });

    /* ================= 启动 ================= */
    function init() {
        applyDark();
        buildUI();
        buildReadBar();
        applyNewTab();
        applyRelTime();
        startMonitor();
    }

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