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在网页上检测视频标签并获取标题和下载链接，点击下载按钮会跳转到视频链接下载并尝试返回页面。
// ==UserScript==
// @name mmdfans 一键下载
// @namespace http://tampermonkey.net/
// @version 1.0.4
// @description 在网页上检测视频标签并获取标题和下载链接，点击下载按钮会跳转到视频链接下载并尝试返回页面。
// @author wzj042
// @match https://mmdfans.net/mmd/*
// @match https://cdn.mmdlibrary.eu.org/*
// @match https://cdn.mmdlibrary2.eu.org/*
// @match https://cdn.mmdlibrary3.eu.org/*
// @match https://cdn.bakabakaxi.eu.org/*
// @match https://cdn.baka6.eu.org/*
// @match https://cdn.baka7.eu.org/*
// @match https://cdn.baka8.eu.org/*
// @match https://cdn.baka9.eu.org/*
// @match https://cirno.baka9.eu.org/*
// @license MIT
// @grant none
// ==/UserScript==
(function () {
'use strict';
/**
* 手动添加 CDN 链接时别忘了在上方添加匹配链接 `match {你要添加的链接}/*`
*/
const CDN_LIST = [
'https://cdn.mmdlibrary.eu.org',
'https://cdn.mmdlibrary2.eu.org',
'https://cdn.mmdlibrary3.eu.org',
'https://cdn.bakabakaxi.eu.org',
'https://cdn.baka6.eu.org',
'https://cdn.baka7.eu.org',
'https://cdn.baka8.eu.org',
'https://cdn.baka9.eu.org',
'https://cirno.baka9.eu.org',
// 添加你要添加的 CDN 链接
]
/**
* 自定义文件名的 slot
* name: slot 名称
* transform: 转换函数
* source: 数据来源
*/
const CUSTOM_FILENAME_SLOT = [
{
name: 'postDate',
transform: (postAt) => {
const datePart = postAt.split(' ')[0];
return datePart;
},
source: (videoInfo) => videoInfo['postAt']
},
{
name: 'curDate',
transform: () => {
return new Date().toISOString().split('T')[0];
},
source: () => {}
}
]
let downloadFlag = false;
const TIME_OUT = 1000;
/**
* 默认文件名格式
* 使用 {param} 的方式表示参数，例如 {author} 表示作者
* 具体的参数名点击显示视频参数按钮后会显示
*/
const DEF_FILENAME = '[iwara]{author}-{title}-{postAt}.mp4';
const delay = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
// 加一个下载防抖事件
const downloadDebounce = (function () {
let timer = null;
return function (pathUrl) {
if (timer) {
clearTimeout(timer);
}
timer = setTimeout(() => {
download(pathUrl);
}, 500);
};
})();
/**
* 检查视频标签是否存在，如果存在则添加下载按钮
*/
const checkVideoTag = async () => {
while (true) {
const videoTag = document.getElementsByClassName('mdui-video-fluid');
const sourceElement = document.querySelector('video source');
const downloadLink = sourceElement ? sourceElement.getAttribute('src') : '';
const titleElement = document.querySelector('h2.title');
const title = titleElement ? titleElement.textContent.trim() : '无标题';
if (videoTag.length > 0) {
const videoInfo = gatherVideoInfo(downloadLink, title);
createTagContainer();
createDownloadButton(videoInfo);
createCopyCdnButton(videoInfo.baseurl);
createJsonButton(videoInfo);
createFilenameInput();
break;
} else if (!downloadFlag) {
const curUrl = window.location.href
if (isCdnLink(curUrl)) {
downloadDebounce(curUrl);
}
}
await delay(TIME_OUT); // 等待下一次检查
}
};
/**
* 检查当前页面是否为 mmdfans 视频的 CDN 链接
* @param {string} url - 当前页面链接
* @returns {boolean} - 如果是 mmdfans 视频的 CDN 链接，则返回 true，否则返回 false
*/
function isCdnLink(url) {
return CDN_LIST.some(cdn => url.startsWith(cdn));
}
function download(pathUrl) {
const a = document.createElement("a");
const url = new URL(pathUrl);
const downloadURL = url.protocol + '//' + url.host + url.pathname;
const filename = url.searchParams.get('filename');
a.download = filename;
a.href = downloadFlag ? downloadURL : pathUrl;
a.click();
a.remove();
setTimeout(function () {
/**
* 下载完成后返回上一页
*/
if (isCdnLink(window.location.href) && downloadFlag) {
window.history.back();
}
downloadFlag = false;
}, TIME_OUT);
downloadFlag = true;
}
/**
* 匹配文件名中的参数并替换为对应的值，返回完整的下载链接
* @param {*} filenameInfo - 文件名信息对象
* @param {*} videoInfo - 视频信息对象
* @returns {string} - 下载链接
*/
function filename2Url(filenameInfo, videoInfo) {
const params = filenameInfo.params;
let filename = filenameInfo.filename;
console.log(filenameInfo, videoInfo);
// 校验参数
if (!params || params.length === 0 || !filename) {
return videoInfo.downloadLink;
}
// 匹配 params 和 videoInfo 中的属性
params.forEach(param => {
let value = videoInfo[param];
// 如果是自定义的 slot 则调用 transform 方法
const customSlot = CUSTOM_FILENAME_SLOT.find(slot => slot.name === param);
if (customSlot && customSlot.transform) {
value = customSlot.transform(customSlot.source(videoInfo));
}
filename = filename.replace(`{${param}}`, value);
});
// 为了防止文件名中含有特殊字符，需要对文件名进行编码
return `${videoInfo.downloadLink}?filename=${encodeURIComponent(filename)}`;
}
function createFilenameInput() {
const filenameButton = document.createElement('button');
filenameButton.innerHTML = 'FileName';
filenameButton.classList.add('mdui-btn');
const filenameInput = document.createElement('input');
filenameInput.id = 'filename-input';
filenameInput.placeholder = '请输入文件名格式';
filenameInput.type = 'text';
// 如果 localStorage 中有 filename 则使用 localStorage 中的值
filenameInput.value = localStorage.getItem('filename') || DEF_FILENAME;
filenameInput.style.width = '50%';
filenameInput.style.display = 'inline-block';
filenameInput.classList.add('mdui-textfield-input');
// 编辑完成后保存到 localStorage
filenameInput.onchange = () => {
localStorage.setItem('filename', filenameInput.value);
};
const tagDivider = document.querySelector('.mdui-divider.tag-divider');
const tagContainer = document.createElement('div');
tagContainer.classList.add('tag-container');
tagContainer.appendChild(filenameButton);
tagContainer.appendChild(filenameInput);
tagDivider.parentNode.insertBefore(tagContainer, tagDivider);
}
/**
* 在标题上方添加一个标签容器，用于存放下载按钮
*/
function createTagContainer() {
const tagContainer = document.createElement('div');
tagContainer.classList.add('tag-container');
const titleDiv = document.querySelector('.mdui-typo');
titleDiv.parentNode.insertBefore(tagContainer, titleDiv);
}
function createDownloadButton(videoInfo) {
const downloadButton = document.createElement('button');
downloadButton.innerHTML = '下载视频';
downloadButton.classList.add('mdui-btn', 'mdui-color-theme-accent', 'mdui-ripple');
downloadButton.onclick = () => {
let baseurl = videoInfo.baseurl;
if (!isCdnLink(baseurl)) {
showAlertWithButtons(baseurl);
return;
}
downloadDebounce(filename2Url(gatherFilenameInfo(), videoInfo));
};
const tagContainer = document.querySelector('.tag-container');
tagContainer.appendChild(downloadButton);
tagContainer.appendChild(createSpace());
}
function createCopyCdnButton(downloadLink) {
const copyCdnButton = document.createElement('button');
copyCdnButton.innerHTML = '复制 CDN 链接';
copyCdnButton.classList.add('mdui-btn', 'mdui-color-theme-accent', 'mdui-ripple');
copyCdnButton.onclick = () => {
if (!downloadLink) {
alert('未获取到视频链接');
return;
}
navigator.clipboard.writeText(downloadLink);
alert('复制成功');
};
const tagContainer = document.querySelector('.tag-container');
tagContainer.appendChild(copyCdnButton);
tagContainer.appendChild(createSpace());
}
/**
* 创建一个 Html 空格（占位）元素
* @returns {HTMLElement} - 返回一个空格元素
*/
function createSpace() {
const space = document.createElement('span');
space.innerHTML = ' ';
return space;
}
function createJsonButton(videoInfo) {
const jsonButton = document.createElement('button');
jsonButton.innerHTML = '显示视频信息';
jsonButton.classList.add('mdui-btn', 'mdui-color-theme-accent', 'mdui-ripple');
jsonButton.onclick = () => {
showPopup(videoInfo);
};
const tagContainer = document.querySelector('.tag-container');
tagContainer.appendChild(jsonButton);
tagContainer.appendChild(createSpace());
}
/**
* 展示视频信息的弹窗
* @param {*} videoInfo - 视频信息
*/
function showPopup(videoInfo) {
const popup = document.createElement('div');
popup.style.position = 'fixed';
popup.style.top = '50%';
popup.style.left = '50%';
popup.style.transform = 'translate(-50%, -50%)';
popup.style.padding = '20px';
popup.style.width = '42%';
popup.style.backgroundColor = '#fff';
popup.style.boxShadow = '0 2px 10px rgba(0, 0, 0, 0.1)';
popup.style.zIndex = '1000';
popup.style.overflowX = 'auto';
const pre = document.createElement('pre');
pre.innerHTML = JSON.stringify(videoInfo, null, 2);
popup.appendChild(pre);
const closeButton = document.createElement('button');
closeButton.innerHTML = '关闭';
closeButton.classList.add('mdui-btn', 'mdui-color-theme-accent', 'mdui-ripple');
closeButton.style.width = '100%';
closeButton.onclick = () => popup.remove();
popup.appendChild(closeButton);
popup.onclick = (e) => {
if (e.target === popup) {
popup.remove();
}
};
document.body.appendChild(popup);
}
/**
* 展示提示框，提示用户手动添加 CDN 链接
* @param {*} cdnLink - 视频下载链接
*/
function showAlertWithButtons(cdnLink) {
const div = document.createElement('div');
div.innerHTML = `
<p>当前 CDN 链接需要手动添加 CDN 链接（脚本主页有教程），否则无法启动下载任务</p>
<button id="open-homepage" class="mdui-btn mdui-color-theme-accent mdui-ripple">打开脚本主页</button>
<button id="copy-baseurl" class="mdui-btn mdui-color-theme-accent mdui-ripple">复制视频 CDN 链接</button>
`;
const tagContainer = document.querySelector('.tag-container');
tagContainer.appendChild(div);
document.getElementById('open-homepage').onclick = () => {
window.open('https://greasyfork.org/zh-CN/scripts/476557-mmdfans%E4%B8%80%E9%94%AE%E4%B8%8B%E8%BD%BD', '_blank');
};
document.getElementById('copy-baseurl').onclick = () => {
navigator.clipboard.writeText(cdnLink);
alert('已复制 CDN 链接');
};
}
/**
* 获取文件名输入框中的参数
* @returns {*} - 返回文件名参数
* @example
* {
* filename: '[iwara]{author}{title}.mp4',
* params: ['author', 'title']
* }
*/
function gatherFilenameInfo() {
const filenameInput = document.getElementById('filename-input');
const filename = filenameInput ? filenameInput.value : '';
const paramMatches = filename.match(/\{(\w+)\}/g);
const params = paramMatches ? paramMatches.map(param => param.slice(1, -1)) : [];
return {
filename: filename,
params: params
};
}
/**
* 将视频信息整合到一个对象中
* @param {string} downloadLink - 视频下载链接
* @param {string} title - 视频标题
* @returns {object} 视频信息对象
*/
function gatherVideoInfo(downloadLink, title) {
const tagContainers = document.querySelectorAll('.tag-container');
const info = {
title: title,
downloadLink: downloadLink,
tags: [],
author: '无作者',
baseurl: '',
source: '',
postAt: '',
comment: ''
};
if (downloadLink) {
const url = new URL(downloadLink);
info.baseurl = url.protocol + '//' + url.host;
}
tagContainers.forEach(container => {
const buttons = container.querySelectorAll('button');
buttons.forEach(button => {
const text = button.textContent.trim();
switch (text) {
case 'Tags':
case 'Source':
case 'PostAt':
case 'Author':
break;
default:
if (container.textContent.includes('Tags')) {
info.tags.push(text);
} else if (container.textContent.includes('Author')) {
info.author = text;
} else if (container.textContent.includes('Source')) {
info.source = container.querySelector('a').href;
} else if (container.textContent.includes('PostAt')) {
info.postAt = text;
}
break;
}
});
if (container.textContent.includes('Comment')) {
info.comment = document.querySelector('blockquote').textContent.trim();
}
});
return info;
}
checkVideoTag();
})();