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Automatically playing videos in XZZD, speedup and silence
// ==UserScript==
// @name XXZD-autoplayer
// @namespace https://github.com/YeJiangnan1029/
// @version 2023-12-15
// @description Automatically playing videos in XZZD, speedup and silence
// @author ybqaq
// @match https://courses.zju.edu.cn/course/*
// @icon data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @license MIT
// @grant none
// ==/UserScript==
(function() {
'use strict';
// parameters
var SPEEDUP = 4;
(async function() {
// 搜集所有视频链接
var url_list = new Array();
var wrapper = await elmGetter.get("div.module.ng-scope ul");
await elmGetter.each("li.ng-scope", wrapper, (chapter_module, isInserted) => {
// console.log(chapter_module);
var parent_node = chapter_module.querySelector("ul.activity-list.module-activity");
elmGetter.each("a.activity-title", parent_node, (url, ii) => {
if (!url_list.includes(url)) {
url_list.push(url);
}
});
});
// for (var i = 0, len = url_list.length; i < len; i++) {
// var url = url_list[i];
// console.log(url.innerText);
// }
var curUrl = await elmGetter.get("li.activity.ng-scope.active a.activity-title");
// console.log(curUrl.innerText);
let curIndex = url_list.indexOf(curUrl);
if (curIndex !== -1) {
url_list.splice(0, curIndex);
}
// 播放当前video
var video = await elmGetter.get("video");
url_list.shift();
playVideo(video);
// 播放下一个video的函数，绑定在video的ended事件
async function playNextVideo() {
console.log('ended play');
// 点击下一个页面
if (url_list.length > 0) {
var nexturl = url_list.shift();
nexturl.click();
console.log("next url clicked");
}
// 寻找当前页面视频
var video = await elmGetter.get("video");
playVideo(video);
}
async function playVideo(video) {
console.log(video);
video.muted = true;
video.playbackRate = SPEEDUP;
// 设置播放完毕的回调函数，自动播放下一个
video.addEventListener('ended', playNextVideo);
// 设置播放速率 使用闭包包装 meetCount 变量
var meetCountModule = (function() {
var meetCount = 0;
function setVideoSpeed(ele_video, speed) {
if (ele_video.playbackRate === speed) {
meetCount += 1;
} else {
ele_video.playbackRate = speed;
}
if (meetCount >= 3) {
clearInterval(t1);
}
}
return {
setVideoSpeed: setVideoSpeed,
getMeetCount: function() {
return meetCount;
}
};
})();
let t1 = setInterval(() => meetCountModule.setVideoSpeed(video, SPEEDUP), 2000);
// 模拟点击按钮，防止被判为拉动进度条
var btn_play = await elmGetter.get(".mvp-toggle-play.mvp-first-btn-margin");
console.log("检测到播放按钮");
console.log(btn_play);
// 暂停时自动点击播放
function aotuResumeVideo(ele_video, ele_btn) {
// console.log(video.paused);
if (ele_video.ended) {
clearInterval(t2);
} else if (ele_video.paused) {
ele_btn.click();
console.log("clicked");
}
}
let t2 = setInterval(() => aotuResumeVideo(video, btn_play), 2000);
}
})();
// cxxjackie大佬编写的异步获取元素的库，由于greasy fork不让直接引用，故贴在代码内
// https://scriptcat.org/lib/513/2.0.0/ElementGetter.js
var elmGetter = function() {
const win = window.unsafeWindow || document.defaultView || window;
const doc = win.document;
const listeners = new WeakMap();
let mode = 'css';
let $;
const elProto = win.Element.prototype;
const matches = elProto.matches ||
elProto.matchesSelector ||
elProto.webkitMatchesSelector ||
elProto.mozMatchesSelector ||
elProto.oMatchesSelector;
const MutationObs = win.MutationObserver ||
win.WebkitMutationObserver ||
win.MozMutationObserver;
function addObserver(target, callback) {
const observer = new MutationObs(mutations => {
for (const mutation of mutations) {
if (mutation.type === 'attributes') {
callback(mutation.target);
if (observer.canceled) return;
}
for (const node of mutation.addedNodes) {
if (node instanceof Element) callback(node);
if (observer.canceled) return;
}
}
});
observer.canceled = false;
observer.observe(target, { childList: true, subtree: true, attributes: true });
return () => {
observer.canceled = true;
observer.disconnect();
};
}
function addFilter(target, filter) {
let listener = listeners.get(target);
if (!listener) {
listener = {
filters: new Set(),
remove: addObserver(target, el => listener.filters.forEach(f => f(el)))
};
listeners.set(target, listener);
}
listener.filters.add(filter);
}
function removeFilter(target, filter) {
const listener = listeners.get(target);
if (!listener) return;
listener.filters.delete(filter);
if (!listener.filters.size) {
listener.remove();
listeners.delete(target);
}
}
function query(all, selector, parent, includeParent, curMode) {
switch (curMode) {
case 'css':
const checkParent = includeParent && matches.call(parent, selector);
if (all) {
const queryAll = parent.querySelectorAll(selector);
return checkParent ? [parent, ...queryAll] : [...queryAll];
}
return checkParent ? parent : parent.querySelector(selector);
case 'jquery':
let jNodes = $(includeParent ? parent : []);
jNodes = jNodes.add([...parent.querySelectorAll('*')]).filter(selector);
if (all) return $.map(jNodes, el => $(el));
return jNodes.length ? $(jNodes.get(0)) : null;
case 'xpath':
const ownerDoc = parent.ownerDocument || parent;
selector += '/self::*';
if (all) {
const xPathResult = ownerDoc.evaluate(selector, parent, null, 7, null);
const result = [];
for (let i = 0; i < xPathResult.snapshotLength; i++) {
result.push(xPathResult.snapshotItem(i));
}
return result;
}
return ownerDoc.evaluate(selector, parent, null, 9, null).singleNodeValue;
}
}
function isJquery(jq) {
return jq && jq.fn && typeof jq.fn.jquery === 'string';
}
function getOne(selector, parent, timeout) {
const curMode = mode;
return new Promise(resolve => {
const node = query(false, selector, parent, false, curMode);
if (node) return resolve(node);
let timer;
const filter = el => {
const node = query(false, selector, el, true, curMode);
if (node) {
removeFilter(parent, filter);
timer && clearTimeout(timer);
resolve(node);
}
};
addFilter(parent, filter);
if (timeout > 0) {
timer = setTimeout(() => {
removeFilter(parent, filter);
resolve(null);
}, timeout);
}
});
}
return {
get currentSelector() {
return mode;
},
get(selector, ...args) {
let parent = typeof args[0] !== 'number' && args.shift() || doc;
if (mode === 'jquery' && parent instanceof $) parent = parent.get(0);
const timeout = args[0] || 0;
if (Array.isArray(selector)) {
return Promise.all(selector.map(s => getOne(s, parent, timeout)));
}
return getOne(selector, parent, timeout);
},
each(selector, ...args) {
let parent = typeof args[0] !== 'function' && args.shift() || doc;
if (mode === 'jquery' && parent instanceof $) parent = parent.get(0);
const callback = args[0];
const curMode = mode;
const refs = new WeakSet();
for (const node of query(true, selector, parent, false, curMode)) {
refs.add(curMode === 'jquery' ? node.get(0) : node);
if (callback(node, false) === false) return;
}
const filter = el => {
for (const node of query(true, selector, el, true, curMode)) {
const _el = curMode === 'jquery' ? node.get(0) : node;
if (refs.has(_el)) break;
refs.add(_el);
if (callback(node, true) === false) {
return removeFilter(parent, filter);
}
}
};
addFilter(parent, filter);
},
create(domString, ...args) {
const returnList = typeof args[0] === 'boolean' && args.shift();
const parent = args[0];
const template = doc.createElement('template');
template.innerHTML = domString;
const node = template.content.firstElementChild;
if (!node) return null;
parent ? parent.appendChild(node) : node.remove();
if (returnList) {
const list = {};
node.querySelectorAll('[id]').forEach(el => list[el.id] = el);
list[0] = node;
return list;
}
return node;
},
selector(desc) {
switch (true) {
case isJquery(desc):
$ = desc;
return mode = 'jquery';
case !desc || typeof desc.toLowerCase !== 'function':
return mode = 'css';
case desc.toLowerCase() === 'jquery':
for (const jq of[window.jQuery, window.$, win.jQuery, win.$]) {
if (isJquery(jq)) {
$ = jq;
break;
};
}
return mode = $ ? 'jquery' : 'css';
case desc.toLowerCase() === 'xpath':
return mode = 'xpath';
default:
return mode = 'css';
}
}
};
}();
})();