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从云展网下载PDF书籍
// ==UserScript==
// @name 云展网PDF下载 YunZhanDownloader
// @namespace https://github.com/lcandy2/YunZhanDownloader
// @version 1.2
// @author lcandy2
// @description 从云展网下载PDF书籍
// @license MIT
// @icon https://book.yunzhan365.com/favicon.ico
// @match *://book.yunzhan365.com/*/*/mobile/*
// @require https://registry.npmmirror.com/jspdf/2.5.1/files/dist/jspdf.umd.min.js
// @require https://registry.npmmirror.com/jquery/3.7.1/files/dist/jquery.min.js
// @run-at document-end
// ==/UserScript==
(function ($, jspdf) {
'use strict';
const getFliphtml5Pages = async () => {
try {
const scriptTag = document.querySelector('script[src*="javascript/config.js"]');
if (!scriptTag) {
throw new Error("Script tag not found");
}
const src = scriptTag.getAttribute("src");
const response = await fetch(src);
const scriptContent = await response.text();
const configMatch = scriptContent.match(/var htmlConfig = ({.*});/);
if (!configMatch || !configMatch[1]) {
throw new Error("htmlConfig not found in the script");
}
const configObject = JSON.parse(configMatch[1]);
const fliphtml5_pages = configObject.fliphtml5_pages;
return fliphtml5_pages;
} catch (error) {
console.error("Error:", error.message);
}
};
const getImageData = async (url) => {
const response = await fetch(url);
const blob = await response.blob();
return new Promise((resolve, reject) => {
const reader = new FileReader();
reader.onload = () => resolve(reader.result);
reader.onerror = reject;
reader.readAsDataURL(blob);
});
};
const addDownloadBtn = (listener) => {
let observer;
const checkAndProcessButtonBar = () => {
const $buttonBar = $("div.fbTopBar div.buttonBar");
const buttonBarAvailable = $buttonBar.length;
const $shareTitle = $("div.share_form p.form_title");
const $shareCloseBtn = $("div.share_form img.close");
const $shareContent = $("div.share_form div.share_content");
const shareFormAvailable = $shareTitle.length && $shareCloseBtn.length && $shareContent.length;
if (buttonBarAvailable && shareFormAvailable) {
observer.disconnect();
console.log("Found buttonBar:", $buttonBar);
const shareElement = $buttonBar.children().eq(8);
const $element = $(`<p id="dl-dialog-btn" style="pointer-events: none; font-size: 12px; color: rgb(255, 255, 255);">下载</p>`);
shareElement.html($element);
$shareTitle.html("下载");
$shareCloseBtn.remove();
const downloadHtml = $(`<h1>下载《${$("title").text()}》</h1
<br><br>
<h2 id="dl-progress">未开始下载</h1>
<br><br>
<button id="dl-btn" style="width: 100%; height: 50px; font-size: 20px; background-color: #4CAF50; color: white; border: none; border-radius: 5px; cursor: pointer;">下载</button>`);
$shareContent.html(downloadHtml);
$("#dl-btn").on("click", listener);
return shareElement;
}
};
const observeDOM = (execute) => {
observer = new MutationObserver((mutations) => {
for (let mutation of mutations) {
if (mutation.addedNodes.length) {
execute();
break;
}
}
});
observer.observe(document.body, { childList: true, subtree: true });
};
observeDOM(checkAndProcessButtonBar);
};
const delay = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
const pdf = new jspdf.jsPDF();
const ConvertToPDF = async (imagePromises) => {
const $dlprogress = $("#dl-progress");
const $dlbtn = $("#dl-btn");
$dlbtn.html("下载中...");
$dlbtn.prop("disabled", true);
$dlbtn.css("background-color", "#808080");
$dlbtn.css("cursor", "not-allowed");
$dlprogress.html("准备下载...");
const title2 = $("title").text();
try {
const images = await Promise.all(imagePromises);
for (let index = 0; index < images.length; index++) {
const progress = `下载中：${index + 1} / ${images.length} 页`;
$dlprogress.html(progress);
console.log(`Downloading: ${progress}`);
if (index > 0)
pdf.addPage();
pdf.addImage(images[index], "WEBP", 0, 0, pdf.internal.pageSize.getWidth(), pdf.internal.pageSize.getHeight());
await delay(1e3);
}
} catch (error) {
console.error("Error processing images:", error);
}
$dlbtn.html("下载 PDF");
$dlbtn.prop("disabled", false);
$dlbtn.css("background-color", "#007bff");
$dlbtn.css("cursor", "pointer");
$dlprogress.html("下载完成");
console.log(`Downloading: ${title2}.pdf`);
DownloadConvertedPDF();
$dlbtn.off("click").on("click", DownloadConvertedPDF);
};
const DownloadConvertedPDF = async () => {
pdf.save(`${title}.pdf`);
};
$(async () => {
const fliphtml5Pages = await getFliphtml5Pages();
if (!fliphtml5Pages) {
console.error("fliphtml5Pages not found");
return;
}
const imagePromises = fliphtml5Pages.map((page) => getImageData(page.n[0]));
const convertToPDF = () => ConvertToPDF(imagePromises);
addDownloadBtn(convertToPDF);
});
})(jQuery, jspdf);