${it.text || ('课件 '+(it.cwid||''))}
${it.cwid || '-'}
`;
}).join('');
wrap.innerHTML = html;
}
function findNextAnchorByCwid(cwid) {
if (!cwid) return null;
const ul = document.getElementById('s_r_ml');
if (!ul) return null;
const liCurrent = document.getElementById('li' + cwid);
if (liCurrent) {
let nextLi = liCurrent.nextElementSibling;
while (nextLi && !nextLi.querySelector('a')) nextLi = nextLi.nextElementSibling;
if (nextLi) {
const a = nextLi.querySelector('a');
if (a) return a;
}
}
const lis = Array.from(ul.querySelectorAll('li'));
let curIdx = -1;
for (let i = 0; i < lis.length; i++) {
const a = lis[i].querySelector('a');
if (!a) continue;
const s = (a.getAttribute('onclick') || '') + '&' + (a.getAttribute('href') || '');
if (s.includes(`courseware_id=${cwid}`)) { curIdx = i; break; }
}
if (curIdx === -1) return null;
for (let j = curIdx + 1; j < lis.length; j++) {
const a = lis[j].querySelector('a');
if (a) return a;
}
return null;
}
function safeNavigateToAnchor(a){
const url = extractJumpUrlFromAnchor(a);
if (url) return navigate(url);
try { a && a.click && a.click(); return true; } catch(_) {}
return false;
}
function goPrev(){
const {items} = parseList();
if (!items.length) return;
const urlCwid = getCwidFromURL();
let i = urlCwid ? items.findIndex(x=>x.cwid===urlCwid) : 0;
i = Math.max(0, i-1);
if (items[i] && (items[i].url || items[i].a)) {
addLog(`上一节：${items[i].text || items[i].cwid || ''}`);
if (items[i].url) navigate(items[i].url);
else safeNavigateToAnchor(items[i].a);
}
}
function goNext(){
const cwid = getCwidFromURL();
const a = cwid ? findNextAnchorByCwid(cwid) : null;
if (a) {
const url = extractJumpUrlFromAnchor(a);
if (url) { addLog('自动进入下一节'); navigate(url); return; }
if (safeNavigateToAnchor(a)) { addLog('自动进入下一节（click兜底）'); return; }
}
const ul = document.getElementById('s_r_ml');
if (!ul) { setStatus('目录未找到'); return; }
const lis = Array.from(ul.querySelectorAll('li'));
if (!lis.length) { setStatus('目录为空'); return; }
let idx = lis.findIndex(li => li.classList.contains('active') || li.classList.contains('cur'));
if (idx < 0) idx = 0;
let nextLi = lis[idx + 1];
while (nextLi && !nextLi.querySelector('a')) nextLi = nextLi.nextElementSibling;
const a2 = nextLi ? nextLi.querySelector('a') : null;
if (a2) {
const url = extractJumpUrlFromAnchor(a2);
if (url) { addLog('自动进入下一节（兜底）'); navigate(url); return; }
if (safeNavigateToAnchor(a2)) { addLog('自动进入下一节（兜底+click）'); return; }
} else {
setStatus('已经是最后一节');
addLog('已是最后一节，无法再前进');
}
}
async function fetchBufferedSeconds(maxWaitMs=25000){
const start = Date.now(), step=300;
while (Date.now()-start < maxWaitMs) {
try{
const W = (typeof unsafeWindow !== 'undefined' && unsafeWindow) || window;
if (typeof W.icme_getLearningInfos === 'function') {
const info = W.icme_getLearningInfos();
if (info && info.totalTime != null) {
const sec = parseInt(String(info.totalTime).trim(), 10);
if (!Number.isNaN(sec) && sec>0) {
const cwid = String(info.coursewareId || getCwidFromURL() || '');
return { buffered: sec+60, cwid };
}
}
}
}catch(_){}
await sleep(step);
}
return null;
}
let countdownTimer = null;
let expectedTotalSec = null;
let remainingSec = null; // 剩余秒数
let isPlaying = false; // 当前播放状态（播放时 true，暂停/未播放 false）
let hookedPlayer = false; // 是否已挂钩站点的 play/pause 回调
function clearCountdown(){
if (countdownTimer){ clearInterval(countdownTimer); countdownTimer=null; }
remainingSec = null;
}
function evaluateVideoPlaying(){
const vids = document.getElementsByTagName('video');
if (vids.length){
const v = vids[0];
return !!(!v.paused && !v.ended && v.readyState >= 2);
}
return false;
}
function onPlayHook(){
isPlaying = true;
addLog('检测到播放中 → 继续倒计时');
}
function onPauseHook(){
isPlaying = false;
addLog('检测到暂停/未播放 → 倒计时暂停');
}
function hookPlayerStatus(){
if (hookedPlayer) return;
hookedPlayer = true;
try{
const W = (typeof unsafeWindow !== 'undefined' && unsafeWindow) || window;
const vids = document.getElementsByTagName('video');
if (vids.length){
const v = vids[0];
v.addEventListener('play', onPlayHook, {passive:true});
v.addEventListener('pause', onPauseHook, {passive:true});
}
const origPlay = W.on_CCH5player_play;
const origPause = W.on_CCH5player_pause;
if (typeof origPlay === 'function'){
W.on_CCH5player_play = function(...args){
try { origPlay.apply(this, args); } finally { onPlayHook(); }
};
} else {
const check = setInterval(()=>{
if (typeof W.on_CCH5player_play === 'function'){
clearInterval(check);
const _op = W.on_CCH5player_play;
W.on_CCH5player_play = function(...args){
try { _op.apply(this, args); } finally { onPlayHook(); }
};
}
}, 800);
}
if (typeof origPause === 'function'){
W.on_CCH5player_pause = function(...args){
try { origPause.apply(this, args); } finally { onPauseHook(); }
};
} else {
const check2 = setInterval(()=>{
if (typeof W.on_CCH5player_pause === 'function'){
clearInterval(check2);
const _oz = W.on_CCH5player_pause;
W.on_CCH5player_pause = function(...args){
try { _oz.apply(this, args); } finally { onPauseHook(); }
};
}
}, 800);
}
}catch(_){}
}
function setExpectedAndETA(totalSec){
expectedTotalSec = totalSec;
remainingSec = totalSec;
setExpected(totalSec);
setETA(totalSec);
isPlaying = evaluateVideoPlaying(); // 初始化当前状态
if (countdownTimer){ clearInterval(countdownTimer); }
countdownTimer = setInterval(()=>{
if (isPlaying && remainingSec != null){
remainingSec = Math.max(0, remainingSec - 1);
}
setETA(remainingSec != null ? remainingSec : null);
if (remainingSec === 0){
clearCountdown();
setStatus('到达预计时长，自动进入下一节…');
addLog('到达预计时长（剩余倒计时=0）→ 自动进入下一节');
goNext();
}
}, 1000);
}
function startCountdown(totalSec, forCwid){
clearCountdown();
setExpectedAndETA(totalSec);
}
function bindVideoEnded(){
const vids = document.getElementsByTagName('video');
if (vids.length){
const v = vids[0];
if (!v._cmeEnded){
v._cmeEnded = true;
v.addEventListener('ended', ()=>{
onPauseHook();
clearCountdown();
setStatus('检测到视频 ended → 自动下一节…');
addLog('检测到视频 ended → 自动下一节');
goNext();
});
}
}
}
function isVisible(el){
if (!el) return false;
const cs = window.getComputedStyle ? getComputedStyle(el) : null;
if (cs && (cs.display === 'none' || cs.visibility === 'hidden' || cs.opacity === '0')) return false;
if (el.style && el.style.display === 'none') return false;
return true;
}
let signSilenceUntil = 0;
function tryClickSignDialog(){
const warps = document.querySelectorAll('.xywarp');
if (!warps || warps.length === 0) return;
const warp = warps[0];
if (!isVisible(warp)) return;
const btns = document.querySelectorAll('.xywarp .zfb_btns1 a');
if (!btns || btns.length === 0) return;
const btn = btns[0];
try {
btn.click();
addLog('签到成功：已自动点击“签到”按钮');
signSilenceUntil = Date.now() + 8000;
} catch (_) {
}
}
setInterval(tryClickSignDialog, 10000);
let autoMode = false;
function updateMuteButtonLabel(){
const btn = document.getElementById('cme-mute');
if (!btn) return;
const vids = document.querySelectorAll('video');
const muted = vids.length ? vids[0].muted : false;
btn.textContent = muted ? '取消静音' : '静音';
}
function ensureHelpModal(){
if (document.getElementById('cme-help-modal')) return;
const modal = document.createElement('div');
modal.id = 'cme-help-modal';
modal.style.cssText = `
position: fixed; inset: 0; display: none; z-index: 2147483648;
align-items: center; justify-content: center; background: rgba(0,0,0,.45);
font-family: inherit;
`;
modal.innerHTML = `