// ==UserScript==
// @name 学习通课程任务助手
// @namespace local.chaoxing.course.helper
// @version 1.2.3
// @description 修复脚本猫隔离环境的鼠标事件构造异常，支持封面播放器、多媒体、题库与详细进度
// @author JXY
// @license MIT
// @homepage https://scriptcat.org/
// @supportURL https://scriptcat.org/
// @match *://chaoxing.com/*
// @match *://*.chaoxing.com/*
// @match *://xueyinonline.com/*
// @match *://*.xueyinonline.com/*
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_addValueChangeListener
// @grant GM_registerMenuCommand
// @grant unsafeWindow
// @run-at document-idle
// ==/UserScript==
(function () {
'use strict';
const MESSAGE_TYPE = 'cx-course-helper-worker-v1';
const PAGE_WINDOW = typeof unsafeWindow !== 'undefined' ? unsafeWindow : window;
const IS_TOP = PAGE_WINDOW.top === PAGE_WINDOW;
const IS_DIRECT_CHILD = !IS_TOP && PAGE_WINDOW.parent === PAGE_WINDOW.top;
let controllerActive = IS_TOP;
let parentControllerSeen = IS_TOP;
let controllerMenuRegistered = false;
const WORKER_ID = `${Date.now().toString(36)}-${Math.random().toString(36).slice(2)}`;
const STORE = {
enabled: 'cx_helper_enabled',
speed: 'cx_helper_speed',
autoJump: 'cx_helper_auto_jump',
bank: 'cx_helper_bank',
unanswered: 'cx_helper_unanswered',
logs: 'cx_helper_logs'
};
const CONFIG = {
defaultSpeed: 1,
interval: 1500,
workerTtl: 6500,
navigationCooldown: 8000,
completionStableTime: 2500,
detailPageDelay: 1800,
selectors: {
questions: ['.TiMu', '.questionLi', '.quesItem', '.ans-ques'],
optionGroups: [
'.Zy_ulTop > li',
'.answerList > li',
'.answerOption',
'.option-item',
'label:has(input[type="radio"])',
'label:has(input[type="checkbox"])'
],
textInputs: ['input[type="text"]', 'textarea'],
submit: [
'button.submitBtn', '.submitBtn', '.answer-submit',
'button[data-action="submit"]', 'button[type="submit"]'
],
next: [
'button.nextChapter', 'a.nextChapter', '.next-btn',
'button[title*="下一节"]', 'a[title*="下一节"]',
'button[aria-label*="下一"]', 'a[aria-label*="下一"]'
],
catalog: [
'.chapter_unit a[href*="studentstudy"]',
'.catalog_level a[href*="studentstudy"]',
'.catalog_points a[href]',
'.ncells a[href]',
'#courseChapter .chapter_item a[href]',
'#courseChapter [onclick*="chapter"]',
'.chapter_item .catalog_name',
'a[href*="chapterId"][href*="courseId"]',
'.posCatalog_name'
],
currentCatalog: [
'.posCatalog_select', '.catalog_points .curr', '.chapter_unit .curr',
'.catalog_level .curr', '.ncells .curr', '[aria-current="true"]'
],
completed: [
'.completed', '.finish', '.finished', '.jobFinish', '.icon_Completed',
'.ans-job-finished', '[data-status="completed"]', '[title*="已完成"]'
],
incomplete: [
'.jobUnfinish', '.unfinished', '.icon-unfinish',
'[data-status="unfinished"]', '[title*="未完成"]'
]
}
};
const FALLBACK_PREFIX = 'cx_helper_fallback:';
const storageApi = {
get(key, fallback) {
try {
if (typeof GM_getValue === 'function') return GM_getValue(key, fallback);
} catch (error) {
console.warn('[XXT] GM_getValue failed, using local storage', error);
}
try {
const raw = localStorage.getItem(`${FALLBACK_PREFIX}${key}`);
return raw === null ? fallback : JSON.parse(raw);
} catch (_) {
return fallback;
}
},
set(key, value) {
try {
if (typeof GM_setValue === 'function') {
GM_setValue(key, value);
return;
}
} catch (error) {
console.warn('[XXT] GM_setValue failed, using local storage', error);
}
try {
localStorage.setItem(`${FALLBACK_PREFIX}${key}`, JSON.stringify(value));
} catch (_) {
// Storage can be unavailable in restricted third-party frames.
}
},
listen(key, callback) {
try {
if (typeof GM_addValueChangeListener === 'function') {
return GM_addValueChangeListener(key, callback);
}
} catch (error) {
console.warn('[XXT] GM_addValueChangeListener failed', error);
}
return null;
},
registerMenu(label, callback) {
try {
if (typeof GM_registerMenuCommand === 'function') {
return GM_registerMenuCommand(label, callback);
}
} catch (error) {
console.warn('[XXT] GM_registerMenuCommand failed', error);
}
return null;
}
};
const state = {
enabled: toBoolean(storageApi.get(STORE.enabled, false)),
speed: clampSpeed(storageApi.get(STORE.speed, CONFIG.defaultSpeed)),
autoJump: toBoolean(storageApi.get(STORE.autoJump, true)),
bank: loadObject(STORE.bank),
bankIndex: new Map(),
unanswered: loadObject(STORE.unanswered),
media: new WeakMap(),
answeredQuestions: new WeakSet(),
submittedQuestions: new WeakSet(),
pageSubmitted: false,
workers: new Map(),
panel: null,
progressWindow: null,
progressOpen: false,
timer: null,
running: false,
seenWork: false,
stableSince: 0,
lastNavigation: 0,
detailJumpAttempted: false,
detailExpandAttempted: false,
detailPageEnteredAt: Date.now(),
currentTaskKey: '',
taskEnteredAt: Date.now(),
ignoreWorkerUntil: 0,
lastLog: '',
lastLogAt: 0,
lastError: ''
};
function isController() {
return controllerActive;
}
function announceController() {
if (!isController()) return;
try {
for (let index = 0; index < PAGE_WINDOW.frames.length; index += 1) {
PAGE_WINDOW.frames[index].postMessage({ type: MESSAGE_TYPE, kind: 'controller-present' }, '*');
}
} catch (_) {
// Cross-origin frames still accept postMessage when referenced directly.
}
}
function activateController() {
controllerActive = true;
parentControllerSeen = true;
if (document.body) createPanel();
if (!controllerMenuRegistered) {
storageApi.registerMenu('启动/暂停助手', toggleEnabled);
storageApi.registerMenu('导入本地题库', importBank);
storageApi.registerMenu('导出未匹配题目', exportUnanswered);
controllerMenuRegistered = true;
}
announceController();
}
function deactivateController() {
if (IS_TOP) return;
controllerActive = false;
state.panel?.remove();
state.progressWindow?.remove();
state.panel = null;
state.progressWindow = null;
state.progressOpen = false;
state.workers.clear();
}
function probeParentController() {
if (!IS_DIRECT_CHILD || window.parent === window) return;
window.parent.postMessage({ type: MESSAGE_TYPE, kind: 'controller-probe' }, '*');
}
rebuildBankIndex();
migrateLegacyUnanswered();
function toBoolean(value) {
if (typeof value === 'string') return value === 'true' || value === '1';
return Boolean(value);
}
function clampSpeed(value) {
const number = Number(value);
if (!Number.isFinite(number)) return CONFIG.defaultSpeed;
return Math.max(0.5, Math.min(16, number));
}
function loadObject(key) {
const raw = storageApi.get(key, '{}');
try {
const parsed = typeof raw === 'string' ? JSON.parse(raw) : raw;
return parsed && typeof parsed === 'object' && !Array.isArray(parsed) ? parsed : {};
} catch (_) {
return {};
}
}
function saveObject(key, value) {
storageApi.set(key, JSON.stringify(value));
}
function normalize(value) {
return String(value ?? '')
.replace(/[\u00a0\r\n\t ]+/g, ' ')
.replace(/[“”"'「」『』（）()【】\[\]]/g, '')
.replace(/^\s*\d+[.、]\s*/, '')
.trim()
.toLowerCase();
}
function rebuildBankIndex() {
state.bankIndex = new Map();
Object.entries(state.bank).forEach(([question, answer]) => {
if (!question.startsWith('_unanswered:')) {
const key = normalize(question);
if (key) state.bankIndex.set(key, answer);
}
});
}
function migrateLegacyUnanswered() {
let changed = false;
Object.keys(state.bank).forEach((key) => {
if (!key.startsWith('_unanswered:')) return;
const question = key.slice('_unanswered:'.length);
if (question && !Object.prototype.hasOwnProperty.call(state.unanswered, question)) {
state.unanswered[question] = '';
}
delete state.bank[key];
changed = true;
});
if (changed) {
saveObject(STORE.bank, state.bank);
saveObject(STORE.unanswered, state.unanswered);
rebuildBankIndex();
}
}
function isVisible(node) {
if (!(node instanceof Element)) return false;
const style = getComputedStyle(node);
if (style.display === 'none' || style.visibility === 'hidden' || style.opacity === '0') return false;
const rect = node.getBoundingClientRect();
return rect.width > 0 && rect.height > 0;
}
function queryAllInOrder(selectors, root = document) {
if (!selectors.length) return [];
try {
return Array.from(root.querySelectorAll(selectors.join(',')));
} catch (_) {
const nodes = [];
selectors.forEach((selector) => {
try {
root.querySelectorAll(selector).forEach((node) => {
if (!nodes.includes(node)) nodes.push(node);
});
} catch (_) {
// Ignore selectors unsupported by an older browser engine.
}
});
return nodes;
}
}
function firstVisible(selectors, root = document) {
return queryAllInOrder(selectors, root).find(isVisible) || null;
}
function clickElement(node) {
if (!(node instanceof Element) || !isVisible(node)) return false;
node.scrollIntoView({ block: 'center', behavior: 'auto' });
['mouseover', 'mousedown', 'mouseup'].forEach((type) => {
node.dispatchEvent(new MouseEvent(type, { bubbles: true, cancelable: true }));
});
node.click();
return true;
}
function setNativeValue(input, value) {
const prototype = input instanceof HTMLTextAreaElement
? HTMLTextAreaElement.prototype
: HTMLInputElement.prototype;
const descriptor = Object.getOwnPropertyDescriptor(prototype, 'value');
if (descriptor && descriptor.set) descriptor.set.call(input, String(value ?? ''));
else input.value = String(value ?? '');
input.dispatchEvent(new Event('input', { bubbles: true }));
input.dispatchEvent(new Event('change', { bubbles: true }));
}
function pushLog(message, force = false) {
const now = Date.now();
if (!force && message === state.lastLog && now - state.lastLogAt < 4000) return;
state.lastLog = message;
state.lastLogAt = now;
if (!isController()) {
window.parent.postMessage({ type: MESSAGE_TYPE, kind: 'log', message, hops: 0 }, '*');
return;
}
const line = `${new Date().toLocaleTimeString()} ${message}`;
const existing = storageApi.get(STORE.logs, []);
const lines = Array.isArray(existing) ? existing : [];
storageApi.set(STORE.logs, [line, ...lines].slice(0, 100));
updatePanel();
}
function reportError(error) {
const message = error instanceof Error ? error.message : String(error);
state.lastError = message;
pushLog(`运行异常：${message}`, true);
}
function bindStoreListeners() {
storageApi.listen(STORE.enabled, (_name, _old, value) => {
state.enabled = toBoolean(value);
updatePanel();
});
storageApi.listen(STORE.speed, (_name, _old, value) => {
state.speed = clampSpeed(value);
updatePanel();
});
storageApi.listen(STORE.autoJump, (_name, _old, value) => {
state.autoJump = toBoolean(value);
updatePanel();
});
storageApi.listen(STORE.bank, () => {
state.bank = loadObject(STORE.bank);
rebuildBankIndex();
});
storageApi.listen(STORE.unanswered, () => {
state.unanswered = loadObject(STORE.unanswered);
});
}
function getQuestionBlocks() {
for (const selector of CONFIG.selectors.questions) {
const candidates = Array.from(document.querySelectorAll(selector)).filter(isVisible);
if (!candidates.length) continue;
const blocks = candidates.map((node) => {
if (!node.matches('.TiMu')) return node;
const ownsAnswerControls = node.querySelector('.Zy_ulTop, .answerList, input, textarea');
return ownsAnswerControls ? node : node.closest('.questionLi, .quesItem, .ans-ques') || node;
});
return blocks.filter((node, index) => blocks.indexOf(node) === index && isVisible(node));
}
return [];
}
function getQuestionText(block) {
const title = block.querySelector('.Zy_TItle, .quesTitle, .question-title, .mark_name, [data-question-title]');
if (title) return normalize(title.textContent);
const clone = block.cloneNode(true);
queryAllInOrder(CONFIG.selectors.optionGroups, clone).forEach((node) => node.remove());
queryAllInOrder(CONFIG.selectors.textInputs, clone).forEach((node) => node.remove());
return normalize(clone.textContent).slice(0, 500);
}
function findAnswer(question) {
const key = normalize(question);
if (!key) return null;
if (state.bankIndex.has(key)) return state.bankIndex.get(key);
if (key.length < 6) return null;
for (const [candidate, answer] of state.bankIndex.entries()) {
if (candidate.length >= 6 && (key.includes(candidate) || candidate.includes(key))) return answer;
}
return null;
}
function rememberUnanswered(question) {
if (!question || Object.prototype.hasOwnProperty.call(state.unanswered, question)) return;
state.unanswered[question] = '';
saveObject(STORE.unanswered, state.unanswered);
pushLog(`未匹配题目：${question.slice(0, 36)}`);
}
function findOptionNodes(block) {
for (const selector of CONFIG.selectors.optionGroups) {
let nodes = [];
try {
nodes = Array.from(block.querySelectorAll(selector)).filter(isVisible);
} catch (_) {
nodes = [];
}
if (nodes.length) return nodes;
}
return [];
}
function optionText(node) {
const preferred = node.querySelector('.after, .option-content, .answerText, .clearfix');
const text = normalize((preferred || node).textContent);
return text.replace(/^[a-z][.、．]\s*/i, '').trim();
}
function optionLetter(node) {
const text = normalize(node.textContent);
const match = text.match(/^([a-z])[.、．\s]/i);
return match ? match[1].toLowerCase() : '';
}
function isOptionSelected(node) {
const input = node.matches('input') ? node : node.querySelector('input[type="radio"], input[type="checkbox"]');
if (input && input.checked) return true;
if (node.getAttribute('aria-checked') === 'true' || node.getAttribute('aria-selected') === 'true') return true;
return /(^|\s)(selected|checked|active|on)(\s|$)/i.test(node.className || '');
}
function isQuestionCompleted(block) {
if (state.submittedQuestions.has(block)) return true;
if (block.matches('.completed, .finished, [data-status="completed"]')) return true;
return Boolean(firstVisible(['.answerAnalysis', '.analysis', '.Py_answer', '.rightAnswer', '.result-right'], block));
}
function answerQuestion(block) {
const question = getQuestionText(block);
if (isQuestionCompleted(block) || state.answeredQuestions.has(block)) {
return { completed: true, pending: false, matched: true };
}
const answer = findAnswer(question);
if (answer === null || answer === undefined || answer === '') {
rememberUnanswered(question);
return { completed: false, pending: true, matched: false };
}
const answers = (Array.isArray(answer) ? answer : [answer]).map(normalize).filter(Boolean);
const options = findOptionNodes(block);
let changed = false;
let matchedCount = 0;
if (options.length) {
answers.forEach((wanted) => {
const target = wanted.replace(/^[a-z][.、．]\s*/i, '').trim();
const node = options.find((option) => {
const text = optionText(option);
const letter = optionLetter(option);
return Boolean(text) && (text === target || text.startsWith(target) || target.startsWith(text)) ||
Boolean(letter) && letter === wanted;
});
if (!node) return;
matchedCount += 1;
if (!isOptionSelected(node)) changed = clickElement(node) || changed;
});
} else {
const inputs = queryAllInOrder(CONFIG.selectors.textInputs, block).filter(isVisible);
inputs.forEach((input, index) => {
const value = answers[index] ?? answers[0];
if (value !== undefined && normalize(input.value) !== value) {
setNativeValue(input, Array.isArray(answer) ? answer[index] ?? answer[0] : answer);
changed = true;
}
});
matchedCount = inputs.length ? Math.min(inputs.length, answers.length || 1) : 0;
}
const fullyMatched = matchedCount >= answers.length && answers.length > 0;
if (!fullyMatched) {
rememberUnanswered(question);
return { completed: false, pending: true, matched: false };
}
const submit = firstVisible(CONFIG.selectors.submit, block);
if (submit && !state.submittedQuestions.has(block)) {
clickElement(submit);
state.submittedQuestions.add(block);
}
state.answeredQuestions.add(block);
if (changed) pushLog(`已填写题目：${question.slice(0, 36)}`);
return { completed: true, pending: false, matched: true };
}
function processQuestions() {
const blocks = getQuestionBlocks();
let completed = 0;
let pending = 0;
blocks.forEach((block) => {
const result = answerQuestion(block);
if (result.completed) completed += 1;
if (result.pending) pending += 1;
});
if (blocks.length && pending === 0 && !state.pageSubmitted) {
const pageSubmit = firstVisible(CONFIG.selectors.submit);
if (pageSubmit && !blocks.some((block) => block.contains(pageSubmit))) {
clickElement(pageSubmit);
state.pageSubmitted = true;
pushLog('已提交当前页面题目');
}
}
return { total: blocks.length, completed, pending };
}
function mediaCompleted(media) {
const info = state.media.get(media);
if (info?.completed) return true;
const duration = Number(media.duration);
const complete = media.ended || (Number.isFinite(duration) && duration > 0 && media.currentTime >= duration - 0.35);
if (complete) {
state.media.set(media, { ...info, completed: true, started: info?.started || false });
}
return complete;
}
function prepareMedia(media, index) {
let info = state.media.get(media);
if (!info) {
info = {
started: false,
completed: false,
failedAt: 0,
playAttemptAt: 0,
uiAttemptAt: 0
};
state.media.set(media, info);
media.addEventListener('ended', () => {
info.completed = true;
pushLog(`媒体 ${index + 1} 已完成`);
});
}
media.playbackRate = state.speed;
media.muted = true;
return info;
}
function findMediaPlayButton(media) {
const selectors = [
'.vjs-big-play-button',
'.vjs-play-control',
'.ans-insertvideo-play',
'.playButton',
'.xgplayer-start',
'.dplayer-play-icon',
'button[aria-label*="播放"]',
'[title="播放"]'
];
const container = media.closest(
'.ans-attach-ct, .video-js, .ans-video, .video-container, .xgplayer, .dplayer'
) || media.parentElement;
return firstVisible(selectors, container || document) || firstVisible(selectors, document);
}
function markMediaStarted(info, index, total) {
if (info.started) return;
info.started = true;
pushLog(`开始媒体 ${index + 1}/${total}，${state.speed}x`);
}
function attemptMediaStart(media, info, index, total) {
const now = Date.now();
if (now - info.uiAttemptAt >= 1200) {
info.uiAttemptAt = now;
const playButton = findMediaPlayButton(media);
if (playButton) clickElement(playButton);
}
if (now - info.playAttemptAt < 1200) return;
info.playAttemptAt = now;
try {
const result = media.play();
if (result && typeof result.then === 'function') {
result.then(() => markMediaStarted(info, index, total)).catch(() => {
info.failedAt = Date.now();
});
} else {
markMediaStarted(info, index, total);
}
} catch (_) {
info.failedAt = now;
}
}
function processMedia() {
const mediaList = Array.from(document.querySelectorAll('video, audio')).filter(isVisible);
let completed = 0;
let playing = 0;
mediaList.forEach((media, index) => {
const info = prepareMedia(media, index);
if (mediaCompleted(media)) {
completed += 1;
return;
}
if (!media.paused) playing += 1;
if (media.paused) attemptMediaStart(media, info, index, mediaList.length);
});
return { total: mediaList.length, completed, playing };
}
function buildWorkerStatus() {
const media = processMedia();
const questions = processQuestions();
const hasWork = media.total > 0 || questions.total > 0;
return {
id: WORKER_ID,
url: location.href,
at: Date.now(),
media,
questions,
hasWork,
busy: media.completed < media.total || questions.pending > 0
};
}
function publishWorkerStatus(status) {
if (isController()) {
if (Date.now() >= state.ignoreWorkerUntil) state.workers.set(WORKER_ID, status);
return;
}
window.parent.postMessage({ type: MESSAGE_TYPE, kind: 'status', status, hops: 0 }, '*');
}
function activeWorkerSummary() {
const cutoff = Date.now() - CONFIG.workerTtl;
for (const [id, worker] of state.workers.entries()) {
if (worker.at < cutoff) state.workers.delete(id);
}
const workers = Array.from(state.workers.values());
const summary = workers.reduce((result, worker) => {
result.mediaTotal += worker.media.total;
result.mediaCompleted += worker.media.completed;
result.questionTotal += worker.questions.total;
result.questionCompleted += worker.questions.completed;
result.questionPending += worker.questions.pending;
result.hasWork = result.hasWork || worker.hasWork;
result.busy = result.busy || worker.busy;
return result;
}, {
mediaTotal: 0,
mediaCompleted: 0,
questionTotal: 0,
questionCompleted: 0,
questionPending: 0,
hasWork: false,
busy: false
});
if (summary.hasWork) state.seenWork = true;
return summary;
}
function hasCompletionMarker(node) {
if (!node) return false;
const className = node.className || '';
const title = node.getAttribute?.('title') || '';
if (/unfinished|unfinish/i.test(className) || /未完成/.test(title)) return false;
if (firstVisible(CONFIG.selectors.incomplete, node)) return false;
if (/completed|(^|[-_\s])finished($|[-_\s])|jobfinish|icon_completed/i.test(className)) return true;
if (/已完成/.test(title)) return true;
return Boolean(firstVisible(CONFIG.selectors.completed, node));
}
function hasIncompleteMarker(node) {
if (!node) return false;
if (/unfinished|unfinish/i.test(node.className || '')) return true;
if (/未完成/.test(node.getAttribute?.('title') || '')) return true;
return Boolean(firstVisible(CONFIG.selectors.incomplete, node));
}
function catalogEntries() {
const candidates = queryAllInOrder(CONFIG.selectors.catalog).filter(isVisible);
const entries = [];
candidates.forEach((node) => {
const clickable = node.closest('a[href]') || node;
if (!entries.includes(clickable) && normalize(clickable.textContent).length > 0) entries.push(clickable);
});
return entries;
}
function currentCatalogEntry(entries) {
const current = firstVisible(CONFIG.selectors.currentCatalog);
if (!current) return null;
return entries.find((entry) => entry === current || entry.contains(current) || current.contains(entry)) || current;
}
function currentTaskMarkedComplete() {
const current = firstVisible(CONFIG.selectors.currentCatalog);
return current ? hasCompletionMarker(current) : false;
}
function taskKey() {
const current = firstVisible(CONFIG.selectors.currentCatalog);
if (!current) return '';
const clickable = current.closest('a[href]') || current.querySelector('a[href]') || current;
return clickable.getAttribute?.('href') || clickable.getAttribute?.('data-id') || normalize(clickable.textContent);
}
function resetTaskProgress(ignoreMilliseconds = 0) {
state.workers.clear();
state.seenWork = false;
state.stableSince = 0;
state.pageSubmitted = false;
state.answeredQuestions = new WeakSet();
state.submittedQuestions = new WeakSet();
state.media = new WeakMap();
state.ignoreWorkerUntil = Date.now() + ignoreMilliseconds;
state.taskEnteredAt = Date.now();
}
function syncTaskContext() {
const key = taskKey();
if (!key) return;
if (!state.currentTaskKey) {
state.currentTaskKey = key;
return;
}
if (key !== state.currentTaskKey) {
state.currentTaskKey = key;
resetTaskProgress(500);
pushLog(`已切换任务点：${normalize(key).slice(0, 30)}`);
}
}
function isCourseDetailPage() {
const path = location.pathname.toLowerCase();
if (/studentstudy|knowledge|chapterstudy/.test(path)) return false;
if (/\/mycourse\/(studentcourse|tch)|\/course\/(detail|courseinfo)/.test(path)) return true;
return Boolean(document.querySelector('.chapter_unit, .catalog_points, .catalog_level')) && catalogEntries().length > 0;
}
function jumpFromCourseDetail() {
if (!isController() || !state.enabled || !state.autoJump || state.detailJumpAttempted) return false;
if (!isCourseDetailPage() || Date.now() - state.detailPageEnteredAt < CONFIG.detailPageDelay) return false;
const entries = catalogEntries();
const target = entries.find(hasIncompleteMarker) || entries.find((entry) => !hasCompletionMarker(entry));
if (!target) {
if (!state.detailExpandAttempted) {
const expander = firstVisible([
'#courseChapter .chapter_unit', '#courseChapter .chapterText',
'.chapter_item .chapterText', '.catalog_level .chapterText'
]);
if (expander) {
state.detailExpandAttempted = true;
state.detailPageEnteredAt = Date.now();
clickElement(expander);
pushLog('已展开课程目录，正在查找任务点');
}
}
return false;
}
state.detailJumpAttempted = true;
resetTaskProgress(1200);
state.currentTaskKey = '';
state.lastNavigation = Date.now();
pushLog(`进入任务点：${normalize(target.textContent).slice(0, 30)}`);
const clicked = clickElement(target);
if (!clicked) state.detailJumpAttempted = false;
return clicked;
}
function goToNextTask() {
if (Date.now() - state.lastNavigation < CONFIG.navigationCooldown) return false;
const next = firstVisible(CONFIG.selectors.next);
if (next && !next.matches(':disabled, [aria-disabled="true"]')) {
resetTaskProgress(1200);
state.currentTaskKey = '';
state.lastNavigation = Date.now();
pushLog('进入下一个任务点');
return clickElement(next);
}
const entries = catalogEntries();
const current = currentCatalogEntry(entries);
const index = entries.indexOf(current);
const following = index >= 0 ? entries.slice(index + 1) : [];
const target = following.find(hasIncompleteMarker) || following.find((entry) => !hasCompletionMarker(entry));
if (!target) return false;
resetTaskProgress(1200);
state.currentTaskKey = '';
state.lastNavigation = Date.now();
pushLog(`按目录进入：${normalize(target.textContent).slice(0, 30)}`);
return clickElement(target);
}
function maybeAdvance(summary) {
if (!isController() || !state.enabled || isCourseDetailPage()) return;
if (Date.now() - state.taskEnteredAt < 4000) return;
const completedWork = state.seenWork && !summary.busy && summary.questionPending === 0 &&
summary.mediaCompleted >= summary.mediaTotal;
const ready = completedWork || (!state.seenWork && currentTaskMarkedComplete());
if (!ready) {
state.stableSince = 0;
return;
}
if (!state.stableSince) state.stableSince = Date.now();
if (Date.now() - state.stableSince < CONFIG.completionStableTime) return;
if (goToNextTask()) state.stableSince = 0;
}
function toggleEnabled() {
state.enabled = !state.enabled;
resetTaskProgress(state.enabled ? 500 : 0);
state.detailJumpAttempted = false;
state.detailExpandAttempted = false;
state.detailPageEnteredAt = Date.now();
storageApi.set(STORE.enabled, state.enabled);
pushLog(state.enabled ? '已启动自动运行' : '已暂停自动运行', true);
updatePanel();
}
function importBank() {
const raw = prompt('粘贴题库 JSON：{"题目":"答案"}，多选题答案使用数组');
if (!raw) return;
try {
const parsed = JSON.parse(raw);
if (!parsed || typeof parsed !== 'object' || Array.isArray(parsed)) throw new Error('顶层必须是 JSON 对象');
state.bank = { ...state.bank, ...parsed };
Object.keys(parsed).forEach((question) => delete state.unanswered[normalize(question)]);
saveObject(STORE.bank, state.bank);
saveObject(STORE.unanswered, state.unanswered);
rebuildBankIndex();
pushLog(`已导入 ${Object.keys(parsed).length} 条题库记录`, true);
} catch (error) {
alert(`题库 JSON 解析失败：${error.message}`);
}
}
function exportUnanswered() {
const payload = JSON.stringify(state.unanswered, null, 2);
prompt('复制未匹配题目，补充答案后重新导入：', payload);
}
function compactText(value) {
return String(value || '').replace(/[\r\n\t ]+/g, ' ').trim();
}
function currentTaskTitle() {
const current = firstVisible(CONFIG.selectors.currentCatalog);
const text = compactText(current?.textContent);
return text || compactText(document.title) || '当前课程页面';
}
function workerLocation(worker) {
try {
const url = new URL(worker.url);
return `${url.hostname}${url.pathname}`;
} catch (_) {
return compactText(worker.url) || '页面地址未知';
}
}
function setMeter(root, completed, total) {
const percent = total > 0 ? Math.round((completed / total) * 100) : 0;
root.querySelector('.cxh-meter-value').textContent = `${completed}/${total}`;
root.querySelector('.cxh-meter-fill').style.width = `${Math.max(0, Math.min(100, percent))}%`;
}
function courseProgress() {
const entries = catalogEntries();
return {
total: entries.length,
completed: entries.filter(hasCompletionMarker).length
};
}
function renderProgressWindow(summary) {
const root = state.progressWindow;
if (!root || !state.progressOpen) return;
const course = courseProgress();
root.querySelector('.cxh-current-task').textContent = currentTaskTitle();
setMeter(root.querySelector('[data-meter="tasks"]'), course.completed, course.total);
setMeter(root.querySelector('[data-meter="media"]'), summary.mediaCompleted, summary.mediaTotal);
setMeter(root.querySelector('[data-meter="questions"]'), summary.questionCompleted, summary.questionTotal);
root.querySelector('.cxh-pending-value').textContent = String(summary.questionPending);
root.querySelector('.cxh-unanswered-value').textContent = String(Object.keys(state.unanswered).length);
const workerList = root.querySelector('.cxh-worker-list');
workerList.replaceChildren();
const workers = Array.from(state.workers.values()).sort((a, b) => a.url.localeCompare(b.url));
if (!workers.length) {
const empty = document.createElement('div');
empty.className = 'cxh-empty';
empty.textContent = state.enabled ? '等待课程页面或播放器状态' : '启动后显示页面与播放器状态';
workerList.appendChild(empty);
} else {
workers.forEach((worker, index) => {
const row = document.createElement('div');
row.className = 'cxh-worker-row';
const header = document.createElement('div');
header.className = 'cxh-worker-header';
const name = document.createElement('strong');
name.textContent = worker.id === WORKER_ID ? '主页面' : `子页面 ${index + 1}`;
const status = document.createElement('span');
status.className = worker.busy
? 'cxh-state is-busy'
: worker.hasWork ? 'cxh-state is-ready' : 'cxh-state is-idle';
status.textContent = worker.busy ? '处理中' : worker.hasWork ? '已就绪' : '等待';
header.append(name, status);
const location = document.createElement('div');
location.className = 'cxh-worker-location';
location.textContent = workerLocation(worker);
location.title = workerLocation(worker);
const details = document.createElement('div');
details.className = 'cxh-worker-details';
details.textContent = `媒体 ${worker.media.completed}/${worker.media.total} · 题目 ${worker.questions.completed}/${worker.questions.total} · 待处理 ${worker.questions.pending}`;
row.append(header, location, details);
workerList.appendChild(row);
});
}
const logList = root.querySelector('.cxh-log-list');
logList.replaceChildren();
const storedLogs = storageApi.get(STORE.logs, []);
const logs = Array.isArray(storedLogs) ? storedLogs.slice(0, 8) : [];
if (!logs.length) {
const empty = document.createElement('div');
empty.className = 'cxh-empty';
empty.textContent = '暂无运行记录';
logList.appendChild(empty);
} else {
logs.forEach((line) => {
const item = document.createElement('div');
item.className = 'cxh-log-item';
item.textContent = String(line);
logList.appendChild(item);
});
}
root.querySelector('.cxh-updated-at').textContent = `更新于 ${new Date().toLocaleTimeString()}`;
}
function toggleProgressWindow(force) {
if (!state.progressWindow) return;
state.progressOpen = typeof force === 'boolean' ? force : !state.progressOpen;
state.progressWindow.hidden = !state.progressOpen;
state.panel?.querySelector('.cxh-open-progress')?.setAttribute('aria-expanded', String(state.progressOpen));
if (state.progressOpen) renderProgressWindow(activeWorkerSummary());
}
function createPanel() {
if (!isController() || state.panel?.isConnected || !document.body) return;
if (state.panel && !state.panel.isConnected) state.panel = null;
if (state.progressWindow && !state.progressWindow.isConnected) state.progressWindow = null;
let style = document.querySelector('#cx-helper-style');
if (!style) {
style = document.createElement('style');
style.id = 'cx-helper-style';
style.textContent = `
#cx-helper-panel{box-sizing:border-box;position:fixed;z-index:2147483647;right:16px;bottom:16px;width:252px;padding:12px;background:#172033;color:#eef3ff;font:13px/1.5 Arial,sans-serif;border:1px solid #415273;border-radius:8px;box-shadow:0 8px 24px #0006}
#cx-helper-panel .cxh-title{font-size:15px;font-weight:700;margin-bottom:5px}
#cx-helper-panel .cxh-status{min-height:38px;color:#c6d4ef;margin-bottom:7px;word-break:break-word}
#cx-helper-panel .cxh-progress{color:#93a9cf;margin-bottom:8px}
#cx-helper-panel .cxh-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
#cx-helper-panel .cxh-speed{width:66px;background:#0e1523;color:#fff;border:1px solid #526687;border-radius:4px;padding:2px 4px}
#cx-helper-panel .cxh-actions{display:flex;gap:5px;flex-wrap:wrap}
#cx-helper-panel .cxh-actions button{display:inline-flex;align-items:center;justify-content:center;width:auto;height:32px;min-width:0;min-height:0;margin:0;background:#2d6cdf;color:#fff;border:0;border-radius:4px;padding:5px 8px;font:13px/1 Arial,sans-serif;cursor:pointer}
#cx-helper-panel .cxh-actions button:hover{filter:brightness(1.15)}
#cx-helper-progress-window{box-sizing:border-box;position:fixed;z-index:2147483646;right:284px;bottom:16px;width:min(440px,calc(100vw - 316px));max-height:min(680px,calc(100vh - 32px));overflow:auto;padding:14px;background:#111827;color:#eef3ff;font:13px/1.5 Arial,sans-serif;border:1px solid #43506a;border-radius:8px;box-shadow:0 12px 30px #0008}
#cx-helper-progress-window[hidden]{display:none}
#cx-helper-progress-window .cxh-window-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px}
#cx-helper-progress-window .cxh-window-title{font-size:16px;font-weight:700}
#cx-helper-progress-window .cxh-close{width:30px;height:30px;padding:0;border:0;border-radius:4px;background:#293449;color:#fff;font-size:20px;line-height:30px;cursor:pointer}
#cx-helper-progress-window .cxh-task-label,#cx-helper-progress-window .cxh-section-title{color:#94a3b8;font-size:12px;margin-bottom:4px}
#cx-helper-progress-window .cxh-current-task{font-weight:700;margin-bottom:12px;overflow-wrap:anywhere}
#cx-helper-progress-window .cxh-overview{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:14px}
#cx-helper-progress-window .cxh-meter-head{display:flex;justify-content:space-between;margin-bottom:5px}
#cx-helper-progress-window .cxh-meter-track{height:7px;background:#2b3548;border-radius:3px;overflow:hidden}
#cx-helper-progress-window .cxh-meter-fill{height:100%;width:0;background:#22c55e;transition:width .2s ease}
#cx-helper-progress-window [data-meter="tasks"] .cxh-meter-fill{background:#38bdf8}
#cx-helper-progress-window [data-meter="questions"] .cxh-meter-fill{background:#f59e0b}
#cx-helper-progress-window .cxh-counts{display:flex;gap:18px;margin-bottom:14px;color:#cbd5e1}
#cx-helper-progress-window .cxh-counts strong{color:#fff}
#cx-helper-progress-window .cxh-section{border-top:1px solid #2c374a;padding-top:11px;margin-top:11px}
#cx-helper-progress-window .cxh-worker-row{padding:8px 0;border-bottom:1px solid #222d40}
#cx-helper-progress-window .cxh-worker-header{display:flex;align-items:center;justify-content:space-between;gap:8px}
#cx-helper-progress-window .cxh-state{font-size:12px;padding:1px 6px;border-radius:4px;background:#334155;color:#dbeafe}
#cx-helper-progress-window .cxh-state.is-busy{background:#713f12;color:#fde68a}
#cx-helper-progress-window .cxh-state.is-ready{background:#14532d;color:#bbf7d0}
#cx-helper-progress-window .cxh-state.is-idle{background:#334155;color:#cbd5e1}
#cx-helper-progress-window .cxh-worker-location{color:#94a3b8;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#cx-helper-progress-window .cxh-worker-details{color:#cbd5e1;margin-top:2px}
#cx-helper-progress-window .cxh-log-item{padding:4px 0;border-bottom:1px solid #222d40;overflow-wrap:anywhere}
#cx-helper-progress-window .cxh-empty{color:#94a3b8;padding:8px 0}
#cx-helper-progress-window .cxh-updated-at{color:#64748b;font-size:12px;margin-top:10px;text-align:right}
@media(max-width:760px){#cx-helper-progress-window{z-index:2147483647;left:12px;right:12px;top:12px;bottom:12px;width:auto;max-height:none}#cx-helper-progress-window .cxh-overview{grid-template-columns:1fr}}
`;
document.documentElement.appendChild(style);
}
const panel = document.createElement('div');
panel.id = 'cx-helper-panel';
panel.innerHTML = `
学习通课程助手
`;
const progressWindow = document.createElement('section');
progressWindow.id = 'cx-helper-progress-window';
progressWindow.hidden = true;
progressWindow.setAttribute('aria-label', '课程进度');
progressWindow.innerHTML = `
当前任务
待处理题目 0未匹配题目 0
`;
document.body.appendChild(panel);
document.body.appendChild(progressWindow);
panel.querySelector('.cxh-speed').addEventListener('change', (event) => {
state.speed = clampSpeed(event.target.value);
event.target.value = state.speed;
storageApi.set(STORE.speed, state.speed);
});
panel.querySelector('.cxh-auto-jump').addEventListener('change', (event) => {
state.autoJump = event.target.checked;
state.detailJumpAttempted = false;
storageApi.set(STORE.autoJump, state.autoJump);
});
panel.querySelector('.cxh-toggle').addEventListener('click', toggleEnabled);
panel.querySelector('.cxh-open-progress').addEventListener('click', () => toggleProgressWindow());
panel.querySelector('.cxh-import').addEventListener('click', importBank);
panel.querySelector('.cxh-export').addEventListener('click', exportUnanswered);
progressWindow.querySelector('.cxh-close').addEventListener('click', () => toggleProgressWindow(false));
state.panel = panel;
state.progressWindow = progressWindow;
updatePanel();
}
function updatePanel(summary = activeWorkerSummary()) {
if (!state.panel) return;
state.panel.querySelector('.cxh-toggle').textContent = state.enabled ? '暂停' : '启动';
state.panel.querySelector('.cxh-speed').value = state.speed;
state.panel.querySelector('.cxh-auto-jump').checked = state.autoJump;
state.panel.querySelector('.cxh-status').textContent = state.lastError
? `异常：${state.lastError}`
: state.lastLog || (state.enabled ? '运行中' : '已暂停');
const course = courseProgress();
state.panel.querySelector('.cxh-progress').textContent =
`任务 ${course.completed}/${course.total} · 媒体 ${summary.mediaCompleted}/${summary.mediaTotal} · 题目 ${summary.questionCompleted}/${summary.questionTotal}`;
renderProgressWindow(summary);
}
function onMessage(event) {
const data = event.data;
if (!data || data.type !== MESSAGE_TYPE) return;
if (data.kind === 'controller-probe') {
if (isController() && event.source && typeof event.source.postMessage === 'function') {
event.source.postMessage({ type: MESSAGE_TYPE, kind: 'controller-present' }, '*');
}
return;
}
if (data.kind === 'controller-present') {
parentControllerSeen = true;
if (!IS_TOP && isController()) deactivateController();
return;
}
if (!isController()) {
const hops = Number(data.hops || 0);
if (hops < 8 && window.parent !== window) {
window.parent.postMessage({ ...data, hops: hops + 1 }, '*');
}
return;
}
if (data.kind === 'status' && data.status?.id) {
if (Date.now() < state.ignoreWorkerUntil) return;
state.workers.set(data.status.id, data.status);
const summary = activeWorkerSummary();
maybeAdvance(summary);
updatePanel(summary);
} else if (data.kind === 'log' && typeof data.message === 'string') {
pushLog(data.message);
}
}
function runCycle() {
if (state.running) return;
state.running = true;
try {
if (isController()) {
if (!state.panel?.isConnected || !state.progressWindow?.isConnected) createPanel();
syncTaskContext();
}
if (state.enabled) {
const status = buildWorkerStatus();
publishWorkerStatus(status);
} else {
publishWorkerStatus({
id: WORKER_ID,
url: location.href,
at: Date.now(),
media: { total: 0, completed: 0, playing: 0 },
questions: { total: 0, completed: 0, pending: 0 },
hasWork: false,
busy: false
});
}
if (isController()) {
jumpFromCourseDetail();
const summary = activeWorkerSummary();
maybeAdvance(summary);
updatePanel(summary);
}
} catch (error) {
reportError(error);
} finally {
state.running = false;
}
}
function boot() {
window.addEventListener('message', onMessage);
if (IS_TOP) {
activateController();
} else if (IS_DIRECT_CHILD) {
probeParentController();
window.setTimeout(probeParentController, 250);
window.setTimeout(() => {
if (!parentControllerSeen) activateController();
}, 700);
}
bindStoreListeners();
runCycle();
if (!state.timer) state.timer = window.setInterval(runCycle, CONFIG.interval);
}
function showBootFailure(error) {
console.error('[XXT] startup failed', error);
if (!document.body || document.querySelector('#cx-helper-boot-error')) return;
const notice = document.createElement('div');
notice.id = 'cx-helper-boot-error';
notice.style.cssText = 'position:fixed;right:16px;bottom:16px;z-index:2147483647;max-width:320px;padding:12px;background:#7f1d1d;color:#fff;border:1px solid #fecaca;border-radius:6px;font:13px/1.5 Arial,sans-serif;word-break:break-word';
notice.textContent = `学习通课程助手启动异常：${error instanceof Error ? error.message : String(error)}`;
document.body.appendChild(notice);
}
function safeBoot() {
try {
boot();
} catch (error) {
showBootFailure(error);
}
}
if (document.body) safeBoot();
else window.addEventListener('DOMContentLoaded', safeBoot, { once: true });
})();