View Danmu Source & View PPT & Preview full PPT
// ==UserScript==
// @name Rainclass GOD
// @namespace http://tampermonkey.net/
// @version 0.3
// @description View Danmu Source & View PPT & Preview full PPT
// @author Ajax
// @match https://*.yuketang.cn/lesson/fullscreen/v3/*
// @match https://*.yuketang.cn/presentation*
// @icon https://www.google.com/s2/favicons?sz=64&domain=yuketang.cn
// @grant none
// @license MIT
// ==/UserScript==
'use strict';
// Some global funcs
// var socket;
// var request;
// var API;
if (location.pathname.match("/lesson/fullscreen/v3") != null)
{
window.strangeDisabled = true;
(function() {
var func = function () {
if (socket == null || socket.onmessage == null || socket.readyState != socket.OPEN) {
setTimeout(func, 1);
return;
}
console.log("Script attached");
socket.onMessageOriginal = socket.onmessage;
socket.onmessage = function(event) {
if (event && event.data) {
var msg = JSON.parse(event.data);
// Get students list
if (msg.op === "hello") {
request.get(API.lesson.get_lesson_base).then(function(response) {
if (response && response.code === 0) {
DecodeCourseStudentData(response.data.classroomId);
}
});
}
// Add preview for presentations
if ((msg.op === "hello" || msg.op === "showpresentation") && msg.presentation !== null) {
var params = {'presentation_id': msg.presentation};
request.get(API.lesson.get_presentation, params).then(function(response) {
if (response && response.code === 0) {
var list = [];
for (var i in response.data.slides) {
list.push(response.data.slides[i].cover);
}
var url = new URL(location);
url.pathname = "/presentation";
url.search = "";
url.searchParams.append("data", JSON.stringify({
"title": response.data.title,
"slides": list
}));
var link = document.createElement("a");
link.href = url.href;
link.innerHTML = response.data.title;
link.target = "_blank";
document.querySelector(".timeline__wrap").appendChild(link);
}
});
}
// Fixed by yuketang, but not entirely
// Show danmaku source
if (msg.op === "newdanmu") {
var uid = parseInt(msg.userid);
if (localStorage["studentInfo" + uid]) {
var data = JSON.parse(localStorage["studentInfo" + uid]);
msg.danmu = `[${data.name}:${uid}] ${msg.danmu}`;
event = {"data": JSON.stringify(msg)};
}
else {
msg.danmu = `[${uid}] ${msg.danmu}`;
event = {"data": JSON.stringify(msg)};
}
}
// Make presentations appear by default
if (msg.op === "slidenav") {
msg.slide.total = 0;
msg.slide.step = -1;
event = {"data": JSON.stringify(msg)};
}
}
socket.onMessageOriginal(event);
};
socket.onCloseOriginal = socket.onclose;
socket.onclose = function() {
setTimeout(func, 100);
socket.onCloseOriginal();
};
};
window.onload = func;
})();
}
// PPT preview (custom added, replaces 404 or 401 page.)
if (location.pathname.match("/presentation") != null) {
console.log("Script attached");
var url = new URL(location);
var data = JSON.parse(url.searchParams.get("data"));
document.write(`
<html>
<head>
<title>${data.title}</title>
<style type="text/css">
div {
border: 2px solid lightgray;
margin: 10px;
}
span {
margin: 5px;
}
img {
width: 100%;
}
</style>
</head>
<body>
</body>
</html>
`);
for (var i=0; i<data.slides.length; ++i) {
var div = document.createElement("div");
var txtdiv = document.createElement("span");
txtdiv.textContent = i+1;
div.appendChild(txtdiv);
var img = document.createElement("img");
img.src = data.slides[i];
img.alt = i;
div.appendChild(img);
document.body.appendChild(div);
}
}
function DecodeCourseStudentData(courseId) {
if (localStorage["studentInfoRetrieved" + courseId]) {
return;
}
localStorage["studentInfoRetrieved" + courseId] = "true";
request.get(`/api/open/classroom/member/page-students?classroom_id=${courseId}&role=4&page_size=1&page=1&format=json`).then(function(response) {
if (response && response.data && response.data.student_count) {
var count = parseInt(Math.ceil(response.data.student_count / 100));
for (var i=0; i<count; ++i) {
request.get(`/api/open/classroom/member/page-students?classroom_id=${courseId}&role=5&page_size=100&page=${i+1}&format=json`).then(function(response) {
if (response && response.data) {
for (var i=0; i<response.data.results.length; ++i) {
localStorage["studentInfo" + response.data.results[i].user_id] = JSON.stringify(response.data.results[i]);
}
}
/*
else if (response) {
// Extract <pre> data
var preData = response.match("<div class=\"response-info\">[\\s\\S]*<pre[^>]+>([\\s\\S]*?)</pre>")[1];
// Extract html-formatted json
var jsonHtmlData = preData.match("{[\\s\\S]*}")[0];
// Decode to plain json
var converter = document.createElement("div");
converter.innerHTML = jsonHtmlData;
var jsonData = converter.textContent;
// Parse json
data = JSON.parse(jsonData);
localStorage.studentInfo = data;
}
*/
});
}
}
});
}