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Automatically expand all problem lists and fetch problem titles
// ==UserScript==
// @name 有道答疑助手
// @namespace http://tampermonkey.net/
// @version 0.5
// @description Automatically expand all problem lists and fetch problem titles
// @author You
// @match https://oj.youdao.com/course/*
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
// 定义请求间隔时间（毫秒为单位），例如5秒
const REQUEST_INTERVAL = 5000; // 每5秒为一个题目发送一次请求
// 自动展开所有题目单元
function expandAllUnits() {
const svgElements = document.querySelectorAll('[class^="_courseId__unit_main__"]');
svgElements.forEach(svg => {
let style = svg.getAttribute('style');
if (style && style.includes('display:none')) {
svg.setAttribute('style', style.replace('display:none', 'display:block'));
} else {
svg.setAttribute('style', 'display:block');
}
});
}
// 页面加载完成后执行展开操作
window.addEventListener('load', () => {
// 定义 localStorage 存储键名
const STORAGE_KEY = 'problem_titles_cache';
// 获取 localStorage 中的缓存题目信息
let cachedTitles = JSON.parse(localStorage.getItem(STORAGE_KEY)) || {};
console.log('Initial cached titles:', cachedTitles);
console.log('Page loaded, expanding all units...');
expandAllUnits();
// 获取页面上所有 <li> 元素
const listItems = document.querySelectorAll('[class^="CourseStep_step_tags_item__"]');
// 处理没有缓存的 problemId 数组
const problemsToFetch = [];
// 遍历每个 <li> 元素，优先显示缓存中的数据
listItems.forEach((li) => {
const aTag = li.querySelector('a');
const href = aTag.getAttribute('href');
// 从 href 中提取 courseId、lessonId、lessonProblemType 和 problemId
const courseAndLessonPart = href.split('#')[0].split('/');
const problemPart = href.split('#/1/')[1];
const courseId = courseAndLessonPart[2]; // 提取 courseId
const lessonId = courseAndLessonPart[3]; // 提取 lessonId
const lessonProblemType = courseAndLessonPart[4]; // 提取 lessonProblemType
const problemId = problemPart; // 提取 problemId
// 如果本地缓存中有对应的 problemId 数据，立即显示标题
if (cachedTitles[problemId]) {
console.log(`Using cached title for problemId ${problemId}: ${cachedTitles[problemId]}`);
const titleSpan = document.createElement('span');
titleSpan.textContent = ` - ${cachedTitles[problemId]}`;
li.appendChild(titleSpan);
} else {
// 如果没有缓存，将问题的相关信息添加到待请求的数组中
problemsToFetch.push({ li, courseId, lessonId, lessonProblemType, problemId });
}
});
// 对于没有缓存的题目，按顺序发送请求，并延时
problemsToFetch.forEach((problem, index) => {
setTimeout(() => {
console.log(`Fetching title for problemId: ${problem.problemId}`);
// 发送请求获取题目信息
const requestBody = {
courseId: problem.courseId,
problemId: problem.problemId,
lessonId: problem.lessonId,
lessonProblemType: problem.lessonProblemType
};
// 输出发送请求的参数
console.log(`Request parameters for problemId ${problem.problemId}:`, requestBody);
fetch('https://icodecontest-online-api.youdao.com/api/course/lesson/problem/detail', {
method: 'POST',
headers: {
'accept': 'application/json, text/plain, */*',
'content-type': 'application/json;charset=UTF-8',
},
body: JSON.stringify(requestBody),
credentials: 'include',
})
.then(response => response.json())
.then(data => {
console.log(`Received response for problemId ${problem.problemId}:`, data);
if (data.code === 0) {
const title = data.data.title;
// 保存到本地缓存
cachedTitles[problem.problemId] = title;
localStorage.setItem(STORAGE_KEY, JSON.stringify(cachedTitles));
console.log(`Title for problemId ${problem.problemId} saved to cache: ${title}`);
// 在 <li> 标签中附加题目标题
const titleSpan = document.createElement('span');
titleSpan.textContent = ` - ${title}`;
problem.li.appendChild(titleSpan);
} else {
console.error(`Failed to fetch title for problemId ${problem.problemId}:`, data.msg);
}
})
.catch(error => {
console.error('Error fetching problem details:', error);
});
}, REQUEST_INTERVAL * index); // 延时发送请求，每个请求的延迟时间由索引决定
});
});
})();