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course helper for HKU Moodle with new design
// ==UserScript==
// @name HKU-New-Moodle-Helper
// @include http://moodle.hku.hk/*
// @include https://moodle.hku.hk/*
// @include https://moodle.hku.hk/
// @match https://moodle.hku.hk/my/courses.php
// @run-at document-end
// @version 2024-08-26.05
// @description course helper for HKU Moodle with new design
// @author ArcaLunar
// @resource mystyle https://cdn.jsdelivr.net/gh/ArcaLunar/hku-new-moodle-helper@578d6aa/website.css
// @resource fontawesome https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css
// @icon https://www.google.com/s2/favicons?sz=64&domain=hku.hk
// @grant GM_getResourceText
// @grant GM_addStyle
// @grant GM_getValue
// @grant GM_setValue
// @namespace https://github.com/ArcaLunar/hku-new-moodle-helper
// @license CC BY-NC 4.0
// ==/UserScript==
// #region 检查是否有本地数据，没有则初始化
(() => {
if (
!(
GM_getValue("selectedCoursesList", { src: undefined }).src instanceof
Array
)
) {
GM_setValue("selectedCoursesList", { src: [] });
}
})();
// GM_setValue("selectedCoursesList", { src: [] });
// #endregion
const request = (obj) => {
return new Promise((resolve, reject) => {
let xhr = new XMLHttpRequest();
xhr.open(obj.method || "GET", obj.url);
if (obj.headers) {
Object.keys(obj.headers).forEach((key) => {
xhr.setRequestHeader(key, obj.headers[key]);
});
}
xhr.onload = () => {
if (xhr.status >= 200 && xhr.status < 300) {
resolve(xhr.response);
} else {
reject(xhr.statusText);
}
};
xhr.onerror = () => reject(xhr.statusText);
xhr.send(JSON.stringify(obj.body));
});
};
(function () {
// 加载样式
GM_addStyle(GM_getResourceText("mystyle"));
// var url = window.location.href;
// =====================
// #region 监听 my/courses 页面变化
const targetNode = document.getElementById("page-content");
const config = { attributes: true, childList: true, subtree: true };
const url = window.location.href;
const callback = function (mutationsList, observer) {
let url = window.location.href;
if (url.includes("my/courses.php")) {
var viewPage = document.getElementsByClassName(
"paged-content-page-container"
);
if (viewPage.length > 0) {
console.log("View Page Detected");
console.log(viewPage[0]);
var coursePageList = viewPage[0].children;
console.log("Course Page List Detected");
console.log(coursePageList);
// 检查是否加载完成
if (coursePageList.length > 0) {
var containsDivOnly = true;
for (var i = 0; i < coursePageList.length; i++) {
if (coursePageList[i].tagName != "DIV") {
containsDivOnly = false;
break;
}
}
if (containsDivOnly) {
console.log("Contains Div");
initButton(coursePageList); // 初始化按钮
initButtonAction(coursePageList); // 初始化按钮事件
}
}
}
}
};
const observer = new MutationObserver(callback);
observer.observe(targetNode, config);
window.addEventListener("load", function () {
const url = window.location.href;
if (url == "https://moodle.hku.hk/") {
// 主页
console.log("rendering");
renderMainPage();
} else if (url.includes("course/search.php")) {
// Search 界面
let allCourses = document.getElementsByClassName("coursebox");
if (allCourses && allCourses.length > 0) {
console.log("Search Page Detected. Start initializing");
console.log(allCourses);
initButtonSearchPage(allCourses);
}
}
});
// #endregion
// =====================
// #region 添加按钮
// coursePageList: 分页的课程列表
function initButton(coursePageList) {
observer.disconnect(); // 不观测，防止递归
// 提取已选课程列表
let selectedCoursesList = GM_getValue("selectedCoursesList", {
src: [],
}).src;
console.log("Selected Courses List: ");
console.log(selectedCoursesList);
// 删掉所有 Button
(() => {
let allButtons = document.getElementsByClassName("moodle-helper");
for (let i = allButtons.length - 1; i >= 0; i--) {
allButtons[i].remove();
}
})();
// 在哪一页
var activeIndex = (() => {
if (url.includes("my/courses.php")) {
for (let i = 0; i < coursePageList.length; i++) {
if (!coursePageList[i].classList.contains("hidden")) {
return i;
}
}
}
})();
// 什么视图？
var view = (() => {
if (window.location.href.includes("my/courses.php")) {
let button = document.getElementById("displaydropdown");
return button.children[0].textContent.trim();
}
})();
console.log("Active Index: " + activeIndex);
// 遍历当前页面的课程
if (activeIndex != undefined && activeIndex != null) {
var currentPage = coursePageList[activeIndex].children[0].children; // 课程 HTML 代码
if (view == "Card") {
if (!currentPage[0].classList.contains("card")) {
observer.observe(targetNode, config); // 重新激活
return;
}
} else {
if (!currentPage[0].classList.contains("course-listitem")) {
observer.observe(targetNode, config); // 重新激活
return;
}
}
console.log("Current Page: ");
console.log(currentPage);
for (var i = 0; i < currentPage.length; i++) {
let hasBeenAdded = false;
var currentCourseId = currentPage[i].dataset.courseId;
console.log(currentCourseId);
// 检查是否已添加
for (var j = 0; j < selectedCoursesList.length; j++) {
if (currentCourseId == selectedCoursesList[j].courseId) {
hasBeenAdded = true;
break;
}
}
let displayedInfo;
if (view != "Card") {
displayedInfo = currentPage[i].children[0].children[1]; // div.row // flex-column
} else {
displayedInfo = currentPage[i].children[1].children[0].children[0]; // div.card-body
}
// 新增的按钮
// 检查按钮是否已被添加
var getButton = document.getElementById(`course${currentCourseId}`);
// 判断是 remove 还是 add
var initState = getButton == null || getButton == undefined;
// 初始化按钮
let newButton = document.createElement("button");
newButton.id = `course${currentCourseId}`;
newButton.classList.add("moodle-helper");
newButton.classList.add("btn");
newButton.classList.add("btn-primary");
newButton.relatedCourseId = currentCourseId;
if (initState) {
if (hasBeenAdded) {
newButton.textContent = "Remove from this semester";
newButton.action = "to-remove";
newButton.classList.add("helper-remove-button");
displayedInfo.appendChild(newButton);
} else {
newButton.textContent = "Add to this semester";
newButton.action = "to-add";
newButton.classList.add("helper-add-button");
displayedInfo.appendChild(newButton);
}
currentPage[i].initComplete = true;
}
}
}
console.log("Button Init Complete");
observer.observe(targetNode, config); // 重新激活
}
function initButtonSearchPage(allCourses) {
// 提取已选课程列表
let selectedCoursesList = GM_getValue("selectedCoursesList", {
src: [],
}).src;
console.log("Selected Courses List: ");
console.log(selectedCoursesList);
// 删掉所有 button
for (let i = 0; i < allCourses.length; i++) {
let hasBeenAdded = false;
let currentCourseId = allCourses[i].dataset.courseid;
(() => {
let allButtons = allCourses[i].getElementsByClassName("moodle-helper");
for (let i = allButtons.length - 1; i >= 0; i--) {
allButtons[i].remove();
}
})();
// 检查是否已添加
for (let j = 0; j < selectedCoursesList.length; j++) {
if (currentCourseId == selectedCoursesList[j].courseId) {
hasBeenAdded = true;
break;
}
}
let getButton = document.getElementById(`course${currentCourseId}`);
let initState = getButton == null || getButton == undefined;
// 初始化按钮
let newButton = document.createElement("button");
newButton.classList.add("moodle-helper");
newButton.classList.add("btn");
newButton.classList.add("btn-primary");
newButton.id = `course${currentCourseId}`;
newButton.relatedCourseId = currentCourseId;
if (hasBeenAdded) {
newButton.textContent = "Remove from this semester";
newButton.action = "to-remove";
newButton.classList.add("helper-remove-button");
} else {
newButton.textContent = "Add to this semester";
newButton.action = "to-add";
newButton.classList.add("helper-add-button");
}
newButton.addEventListener("click", function () {
if (this.action == "to-add") {
this.classList.remove("helper-add-button");
this.classList.add("helper-remove-button");
this.textContent = "Remove from this semester";
addToSemester(
this.relatedCourseId,
GM_getValue("selectedCoursesList", { src: [] }).src
);
this.action = "to-remove";
} else if (this.action == "to-remove") {
this.classList.remove("helper-remove-button");
this.classList.add("helper-add-button");
this.textContent = "Add to this semester";
removeFromSem(
this.relatedCourseId,
GM_getValue("selectedCoursesList", { src: [] }).src
);
this.action = "to-add";
}
});
let whereToInsert = allCourses[i].getElementsByClassName("course-btn")[0];
whereToInsert.insertBefore(newButton, whereToInsert.firstChild);
}
}
// #endregion
/* #region 初始化按钮监听 */
function initButtonAction(coursePageList) {
observer.disconnect(); // 不观测，防止递归
// 获取所有按钮
let allButtons = document.getElementsByClassName("moodle-helper");
let selectedCoursesList = GM_getValue("selectedCoursesList", {
src: [],
}).src;
for (let i = 0; i < allButtons.length; i++) {
allButtons[i].addEventListener("click", function () {
if (this.action == "to-add") {
addToSemester(this.relatedCourseId, selectedCoursesList);
this.classList.remove("helper-add-button");
this.classList.add("helper-remove-button");
this.textContent = "Remove from this semester";
this.action = "to-remove";
} else if (this.action == "to-remove") {
removeFromSem(this.relatedCourseId, selectedCoursesList);
this.classList.remove("helper-remove-button");
this.classList.add("helper-add-button");
this.textContent = "Add to this semester";
this.action = "to-add";
}
// 重新刷新
let url = window.location.href;
if (url == "https://moodle.hku.hk/") renderMainPage();
});
}
observer.observe(targetNode, config); // 重新激活
}
/* #endregion */
function removeFromSem(currentCourseId, selectedCoursesList) {
console.log("removed");
// 从课表删除
var filteredList = [];
for (var i = 0; i < selectedCoursesList.length; i++) {
if (selectedCoursesList[i].courseId != currentCourseId) {
filteredList.push(selectedCoursesList[i]);
}
}
GM_setValue("selectedCoursesList", { src: filteredList });
console.log(filteredList);
}
function addToSemester(currentCourseId, selectedCoursesList) {
console.log("added");
// 添加到课表
var info;
if (window.location.href == "https://moodle.hku.hk/my/courses.php") {
info = parseCourseInfo(currentCourseId);
} else if (window.location.href == "https://moodle.hku.hk/") {
info = parseCourseInfoMainPage(currentCourseId);
} else if (window.location.href.includes("course/search.php")) {
info = parseCourseInfoSearchPage(currentCourseId);
}
var currentCourse = {
courseId: currentCourseId,
courseInfoPack: info,
};
selectedCoursesList.push(currentCourse);
GM_setValue("selectedCoursesList", { src: selectedCoursesList });
console.log(selectedCoursesList);
}
/* #region 主页渲染 */
function renderMainPage() {
const selectedCoursesList = GM_getValue("selectedCoursesList", {
src: [],
}).src;
// 先全部清除
(() => {
let allCards = document.getElementsByClassName("moodle-helper-card");
for (let i = allCards.length - 1; i >= 0; i--) {
allCards[i].remove();
}
})();
let mainPage = document.getElementById("frontpage-course-list");
let checkCourseOfSemWrapper = document.getElementById(
"course-of-sem-wrapper"
);
if (checkCourseOfSemWrapper != null) {
checkCourseOfSemWrapper.remove();
}
// 插入 H2 标题
let courseOfSemWrapper = document.createElement("div");
courseOfSemWrapper.classList.add("course-of-sem-wrapper");
courseOfSemWrapper.id = "course-of-sem-wrapper";
let courseOfSemTitle = document.createElement("h2");
courseOfSemTitle.textContent = "Courses of the Semester";
courseOfSemTitle.id = "course-of-sem-title";
courseOfSemWrapper.appendChild(courseOfSemTitle);
// 插入选择的课程
for (let i = 0; i < selectedCoursesList.length; i++) {
let course = createCard(selectedCoursesList[i]);
courseOfSemWrapper.appendChild(course);
}
// 插入到主页
mainPage.insertBefore(courseOfSemWrapper, mainPage.firstChild);
injectMainPageButton();
}
/* #endregion */
/* #region 解析 my/courses.php 界面的课程信息 */
function parseCourseInfo(courseId) {
// 什么视图？
var view = (() => {
if (window.location.href.includes("my/courses.php")) {
let button = document.getElementById("displaydropdown");
return button.children[0].textContent.trim();
}
})();
var viewPage = document.getElementsByClassName(
"paged-content-page-container"
);
var coursePageList = viewPage[0].children;
if (view != "Card") {
for (let i = 0; i < coursePageList.length; i++) {
// 第一级
for (
let c = 0;
c < coursePageList[i].children[0].children.length;
c++
) {
// 第二级
let currentCourse = coursePageList[i].children[0].children[c];
if (currentCourse.dataset.courseId == courseId) {
let ret = {};
let row = currentCourse.children[0];
// Image
var courseImg =
row.children[0].children[0].children[0].attributes["style"].value;
ret.courseImg = courseImg;
// Info
let courseInfo = row.children[1];
// Course Name
var courseName = courseInfo.children[0];
ret.courseName = courseName.outerHTML;
// Category
ret.courseCategory = courseInfo.children[1].outerHTML;
// Year
ret.courseYear = courseInfo.children[2].outerHTML;
// Summary
var courseSummary = courseInfo.children[3];
ret.courseSummary = courseSummary.outerHTML;
console.log(ret);
return ret;
}
}
}
} else {
for (let i = 0; i < coursePageList.length; i++) {
// 第一级
for (
let j = 0;
j < coursePageList[i].children[0].children.length;
j++
) {
let course = coursePageList[i].children[0].children[j];
let currentCourseId = course.dataset.courseId;
if (currentCourseId == courseId) {
let ret = {};
// Image
let courseImg =
course.children[0].children[0].attributes["style"].value;
ret.courseImg = courseImg;
let courseInfo = course.children[1].children[0].children[0];
// Course Name
ret.courseName = courseInfo.children[0].outerHTML;
// Category
ret.courseCategory = courseInfo.children[1].children[0].outerHTML;
// Year
ret.courseYear = courseInfo.children[1].children[1].outerHTML;
// Summary
ret.courseSummary = document.createElement("div").outerHTML;
return ret;
}
}
}
}
}
function parseCourseInfoMainPage(courseId) {
let page = document.getElementsByClassName(
"frontpage-course-list-enrolled"
)[0];
let courses = page.getElementsByClassName("coursebox");
console.log(courses);
for (let i = 0; i < courses.length; i++) {
if (courseId == courses[i].dataset.courseid) {
let course = courses[i];
let ret = {};
// class name
let courseName = course.getElementsByClassName("coursename")[0];
ret.courseName = courseName.outerHTML;
// Image
let courseImg =
'background-image: url("' +
course.getElementsByClassName("courseimage")[0].dataset.src +
'");';
ret.courseImg = courseImg;
// Category
let coursecat = course.getElementsByClassName("coursecat")[0].children;
let category = coursecat[0].outerHTML;
let year = coursecat[1].outerHTML;
ret.courseCategory = category;
ret.courseYear = year;
// summary
let summary = course.getElementsByClassName("no-overflow")[0];
if (summary) {
summary.classList.remove("no-overflow");
summary.classList.add("summary");
} else {
summary = document.createElement("div");
}
ret.courseSummary = summary.outerHTML;
console.log(ret);
return ret;
}
}
}
function parseCourseInfoSearchPage(courseId) {
console.log("Parsing Course Info");
let allCourses = document.getElementsByClassName("coursebox");
// 定位到课程
for (let i = 0; i < allCourses.length; i++) {
if (courseId == allCourses[i].dataset.courseid) {
let course = allCourses[i];
let content = course.getElementsByClassName("content")[0];
let ret = {};
// courseImage
let courseImg =
content.getElementsByClassName("courseimage")[0].attributes["style"]
.value;
ret.courseImg = courseImg;
// courseName
let courseName = content.getElementsByClassName("coursename")[0];
ret.courseName = courseName.outerHTML;
// courseCategory
let courseCategory =
content.getElementsByClassName("coursecat")[0].children[0];
ret.courseCategory = courseCategory.outerHTML;
// courseYear
let courseYear =
content.getElementsByClassName("coursecat")[0].children[1];
ret.courseYear = courseYear.outerHTML;
// courseSummary
let courseSummary = content.getElementsByClassName("no-overflow")[0];
if (courseSummary) {
courseSummary.classList.remove("no-overflow");
courseSummary.classList.add("summary");
} else {
courseSummary = document.createElement("div");
}
ret.courseSummary = courseSummary.outerHTML;
console.log(ret);
return ret;
}
}
}
/* #endregion */
/* #region 主页的课程卡片 */
function createCard(courseInfo) {
let card = document.createElement("div");
card.classList.add("moodle-helper-card");
card.classList.add("coursebox");
card.classList.add("list");
card.classList.add("clearfix");
card.courseId = courseInfo.courseId;
card.id = `courseCard${courseInfo.courseId}`;
card.type = "1";
let content = document.createElement("div");
content.classList.add("content");
// 缩略图
let alink = document.createElement("a");
alink.href = `https://moodle.hku.hk/course/view.php?id=${courseInfo.courseId}`;
let img = document.createElement("div");
img.classList.add("courseimage");
img.setAttribute("style", courseInfo.courseInfoPack.courseImg);
img.dataset.src = courseInfo.courseInfoPack.courseImg
.replace('background-image: url("', "")
.replace('");', "");
alink.appendChild(img);
// Summary 部分
let summary = document.createElement("div");
summary.classList.add("summary");
// 课程名称
let h3 = document.createElement("h3");
h3.classList.add("coursename");
let h3a = document.createElement("a");
h3a.innerHTML = courseInfo.courseInfoPack.courseName;
h3.appendChild(h3a);
// Category
let category = document.createElement("div");
category.classList.add("coursecat");
category.classList.add("text-muted");
let csp1 = document.createElement("span");
csp1.innerHTML = courseInfo.courseInfoPack.courseCategory;
category.appendChild(csp1);
let csp2 = document.createElement("span");
csp2.innerHTML = courseInfo.courseInfoPack.courseYear;
category.appendChild(csp2);
// CourseSummary
let courseSummary = document.createElement("div");
courseSummary.innerHTML = courseInfo.courseInfoPack.courseSummary;
summary.appendChild(h3);
summary.appendChild(category);
summary.appendChild(courseSummary);
// 移除课程
let removeCourse = document.createElement("button");
removeCourse.classList.add("btn");
removeCourse.classList.add("btn-primary");
removeCourse.classList.add("moodle-helper");
removeCourse.classList.add("helper-remove-button");
removeCourse.textContent = "Remove from this semester";
removeCourse.action = "to-remove";
removeCourse.relatedCourseId = courseInfo.courseId;
removeCourse.addEventListener("click", function () {
removeFromSem(
this.relatedCourseId,
GM_getValue("selectedCoursesList", { src: [] }).src
);
let thiscard = document.getElementById(
`courseCard${this.relatedCourseId}`
);
thiscard.remove();
renderMainPage();
});
// enter course
let enterCourse = document.createElement("div");
enterCourse.classList.add("course-btn");
let p1 = document.createElement("p");
p1.appendChild(removeCourse);
enterCourse.appendChild(p1);
let p = document.createElement("p");
let pa = document.createElement("a");
pa.classList.add("btn");
pa.classList.add("btn-primary");
pa.href = `https://moodle.hku.hk/course/view.php?id=${courseInfo.courseId}`;
pa.textContent = "Click to enter this course";
p.appendChild(pa);
enterCourse.appendChild(p);
content.appendChild(alink);
content.appendChild(summary);
content.appendChild(enterCourse);
card.appendChild(content);
return card;
}
/* #endregion */
/* #region 在主页插入按钮 */
function injectMainPageButton() {
let courseBoxes = document.getElementsByClassName("coursebox");
let selectedCoursesList = GM_getValue("selectedCoursesList", {
src: [],
}).src;
for (let i = 0; i < courseBoxes.length; i++) {
if (courseBoxes[i].classList.contains("moodle-helper-card")) continue;
let courseId = courseBoxes[i].dataset.courseid;
let courseButton = courseBoxes[i].getElementsByClassName("course-btn")[0];
// 移除已有按钮
let buttonElement =
courseBoxes[i].getElementsByClassName("moodle-helper");
for (let j = buttonElement.length - 1; j >= 0; j--) {
buttonElement[j].remove();
}
// 检查是否已添加
var hasBeenAdded = false;
for (let j = 0; j < selectedCoursesList.length; j++) {
if (selectedCoursesList[j].courseId == courseId) {
hasBeenAdded = true;
break;
}
}
// 如果已添加
if (hasBeenAdded) {
let removeButton = document.createElement("button");
removeButton.classList.add("btn");
removeButton.classList.add("btn-primary");
removeButton.classList.add("moodle-helper");
removeButton.classList.add("helper-remove-button");
removeButton.textContent = "Remove from this semester";
removeButton.action = "to-remove";
removeButton.relatedCourseId = courseId;
removeButton.addEventListener("click", function () {
if (this.action == "to-add") {
addToSemester(this.relatedCourseId, selectedCoursesList);
this.classList.remove("helper-add-button");
this.classList.add("helper-remove-button");
this.textContent = "Remove from this semester";
this.action = "to-remove";
} else if (this.action == "to-remove") {
removeFromSem(this.relatedCourseId, selectedCoursesList);
this.classList.remove("helper-remove-button");
this.classList.add("helper-add-button");
this.textContent = "Add to this semester";
this.action = "to-add";
}
// 重新刷新
let url = window.location.href;
if (url == "https://moodle.hku.hk/") renderMainPage();
});
courseButton.insertBefore(removeButton, courseButton.firstChild);
} else {
let addButton = document.createElement("button");
addButton.classList.add("btn");
addButton.classList.add("btn-primary");
addButton.classList.add("moodle-helper");
addButton.classList.add("helper-add-button");
addButton.textContent = "Add to this semester";
addButton.action = "to-add";
addButton.relatedCourseId = courseId;
addButton.addEventListener("click", function () {
if (this.action == "to-add") {
addToSemester(this.relatedCourseId, selectedCoursesList);
this.classList.remove("helper-add-button");
this.classList.add("helper-remove-button");
this.textContent = "Remove from this semester";
this.action = "to-remove";
} else if (this.action == "to-remove") {
removeFromSem(this.relatedCourseId, selectedCoursesList);
this.classList.remove("helper-remove-button");
this.classList.add("helper-add-button");
this.textContent = "Add to this semester";
this.action = "to-add";
}
// 重新刷新
let url = window.location.href;
if (url == "https://moodle.hku.hk/") renderMainPage();
});
courseButton.insertBefore(addButton, courseButton.firstChild);
}
}
}
/* #endregion */
})();