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在国家中小学智慧教育平台网站中添加电子课本下载按钮，在列表中无需跳转，无需登录，批量下载
// ==UserScript==
// @name 国家中小学智慧教育平台电子课本教材下载 最新版[直接下载pdf 跳过浏览器默认预览]
// @namespace https://greasyfork.org/zh-CN/scripts/469898-smartedutextbookdownloader
// @version 1.7
// @description 在国家中小学智慧教育平台网站中添加电子课本下载按钮，在列表中无需跳转，无需登录，批量下载
// @author @topjohncian
// @require https://unpkg.com/idb@7/build/umd.js
// @require https://unpkg.com/coco-message@2.0.3/coco-message.min.js
// @match *://basic.smartedu.cn/*
// @connect r1-ndr.ykt.cbern.com.cn
// @connect r2-ndr.ykt.cbern.com.cn
// @connect r3-ndr.ykt.cbern.com.cn
// @license MIT
// @grant window.onurlchange
// ==/UserScript==
window.materialInfo = [];
function ramdomItem(arr) {
return arr[Math.floor(Math.random() * arr.length)];
}
async function onDownloadClick(event) {
event.preventDefault();
event.stopPropagation();
const target = event.target;
const detailHost = [
"//s-file-1.ykt.cbern.com.cn",
"//s-file-2.ykt.cbern.com.cn",
];
const downloadHost =
"https://r1-ndr.ykt.cbern.com.cn,https://r2-ndr.ykt.cbern.com.cn,https://r3-ndr.ykt.cbern.com.cn".split(
","
);
const materialId = target.dataset.materialId;
const fileName = target.dataset.materialTitle + ".pdf";
// alert("下载" + fileName + "\n" + target.dataset.materialId);
const cancel = window.cocoMessage.loading(`正在下载 ${fileName}`);
const detail = await (
await fetch(
ramdomItem(detailHost) +
`/zxx/ndrv2/resources/tch_material/details/${materialId}.json`
)
).json();
const pdfDetail =
detail.ti_items.find((item) => item.ti_format === "pdf") ?? null;
if (pdfDetail === null) {
throw new Error("未找到pdf文件");
}
const downloadURL = pdfDetail.ti_storage.replace(
/^cs_path:\${ref-path}/,
ramdomItem(downloadHost)
);
const blob = await (
await fetch(downloadURL, {
referrer: "https://basic.smartedu.cn/",
referrerPolicy: "strict-origin-when-cross-origin",
body: null,
method: "GET",
mode: "cors",
})
).blob();
const url = URL.createObjectURL(blob);
const a = document.createElement("a");
a.href = url;
a.download = fileName;
a.target = "_blank";
a.click();
URL.revokeObjectURL(url);
cancel();
window.cocoMessage.success(`下载完成 ${fileName}`);
}
let retryTimes = 0;
function tchMaterialHook() {
// var script = document.createElement("script");
// script.src = "https://cdn.jsdelivr.net/npm/idb@7/build/umd.js";
// document.head.appendChild(script);
// const { unProxy } = window.ah.proxy({
// onResponse: (response, handler) => {
// if (
// new URL(response.config.url.replace(/^(\/\/)/, "https://")).pathname ===
// "/proxy/cloud/v1/res_stats/actions/query"
// ) {
// window.materialInfo = JSON.parse(response.response);
// }
// handler.next(response);
// },
// });
const materialUlElement = document.querySelector(
"#main-content > div.content > div.fish-spin-nested-loading.x-edu-nested-loading > div > div:nth-child(2) > div > div:nth-child(2) > div:nth-child(2) > ul"
);
if (materialUlElement === null) {
if (retryTimes >= 60) {
return;
} else {
retryTimes += 1;
setTimeout(() => tchMaterialHook(), 1000);
}
return;
}
retryTimes = 0;
const config = { attributes: true, childList: true, subtree: true };
// Callback function to execute when mutations are observed
const callback = (mutationList, observer) => {
console.log(
"[SMARTEDU-DOWNLOADER] Mutation Observer Updated",
mutationList,
observer
);
const needUpdate = mutationList
.flatMap((mutation) => [...mutation.addedNodes, ...mutation.removedNodes])
.every((element) => !(element instanceof HTMLButtonElement));
if (needUpdate) {
hook().then();
}
};
const observer = new MutationObserver(callback);
observer.observe(materialUlElement, config);
hook().then();
async function hook() {
if (window.materialInfo.length === 0) {
await getMaterialInfo();
}
const materialSpanDivs = materialUlElement.querySelectorAll(
"li > div:nth-child(2) > div:nth-child(1)"
);
const versionLabelSpan = document.querySelector(
"#main-content > div.content > div.fish-spin-nested-loading.x-edu-nested-loading > div > div:nth-child(2) > div > div:nth-child(2) > div:nth-child(1) > div:nth-child(2) > div:nth-child(2) > label.fish-radio-tag-wrapper-checked > span:nth-child(2)"
);
const versionLabel = versionLabelSpan?.innerText ?? "";
materialSpanDivs.forEach((materialSpanDiv) => {
materialSpanDiv.querySelector("button")?.remove();
});
for (const materialSpanDiv of materialSpanDivs) {
const materialName = materialSpanDiv.querySelector("span").innerText;
const materials = window.materialInfo.filter(
(m) => m.title === materialName
);
const material =
versionLabel !== ""
? materials.find((m) =>
m.tag_list.some((tag) => tag.tag_name === versionLabel)
) ?? materials[0]
: materials[0];
const button = document.createElement("button");
button.dataset.materialId = material.id;
button.dataset.materialTitle = material.title;
button.innerText = `下载 ${material.title}.pdf`;
button.setAttribute("style", "z-index: 999;");
button.onclick = onDownloadClick;
materialSpanDiv.appendChild(button);
}
}
}
function tchMaterialDetailHook() {
const contentId = new URLSearchParams(location.search).get("contentId");
if (contentId === null) {
return;
}
const materialSpanDiv = document.querySelector(
`#main-content > div.content > div:last-child > div > div > div:nth-child(1)`
);
const materialTitle = materialSpanDiv?.querySelector("h3")?.innerText ?? "";
if (materialSpanDiv === null || materialTitle === "") {
if (retryTimes >= 60) {
return;
} else {
retryTimes += 1;
setTimeout(() => tchMaterialDetailHook(), 1000);
}
return;
}
retryTimes = 0;
// const material = window.materialInfo.find((m) => m.id === contentId);
const button = document.createElement("button");
button.dataset.materialId = contentId;
button.dataset.materialTitle = materialTitle;
button.innerText = `下载 ${materialTitle}.pdf`;
button.setAttribute("style", "z-index: 999;");
button.onclick = onDownloadClick;
materialSpanDiv.appendChild(button);
}
async function getMaterialInfo() {
const db = await idb.openDB("content-library_ncet-xedu");
window.materialInfo = await db
.transaction("NDR_TchMaterial", "readonly")
.objectStore("NDR_TchMaterial")
.getAll();
}
async function main() {
"use strict";
if (new URL(location.href).pathname === "/tchMaterial") {
tchMaterialHook();
} else if (new URL(location.href).pathname === "/tchMaterial/detail") {
tchMaterialDetailHook();
}
}
(async function () {
// @ts-expect-error
if (window.onurlchange === null) {
// feature is supported
window.addEventListener("urlchange", (info) => {
console.log(info);
main();
});
}
await main();
})();