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国家中小学智慧教育平台教材PDF电子课本链接与下载工具

教材列表页与预览页添加了PDF按钮，免登录查看或下载电子课本与课外书籍，可批量下载

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// @description  教材列表页与预览页添加了PDF按钮，免登录查看或下载电子课本与课外书籍，可批量下载
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
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    if (window.location.href.includes("-private") && window.location.href.includes("=download")) {
        window.location.replace(window.location.href.replace("-private", ""));
    }

    const toolbarViewerRight = document.querySelector("#toolbarViewerRight");
    if (toolbarViewerRight && document.referrer.includes("basic.smartedu.cn")) { // 仅限basic.smartedu.cn，排除全屏授课页面
        const hiddenElements = toolbarViewerRight.querySelectorAll("[hidden][data-l10n-id='download']");
        hiddenElements.forEach(function(element) {
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    let link;
    const pattern = /contentId=([a-zA-Z0-9_-]+)/; // 匹配 contentId 的正则表达式
    const contentId = window.location.href.match(pattern)?.[1]; // 获取 contentId 的数值
    link = `https://r3-ndr.ykt.cbern.com.cn/edu_product/esp/assets_document/${contentId}.pkg/pdf.pdf`;
    // window.location.href = link; // 直接重定向到该网址，经测试可用

    const maxTimeToCheck = 15000; // 最多检查 15000 毫秒，即 15 秒
    let elapsedTime = 0;

    function checkLoginModal() {
        const loginModal = document.querySelector(".fish-modal-root");
        if (loginModal) {
            clearInterval(intervalId1); // 清除定时器
            // 去除阻碍
            loginModal.remove(); // 去除遮罩
            const body = document.querySelector("html > body"); // 去除 body 属性
            body.removeAttribute("class");
            body.removeAttribute("style");
            // 添加阅读器
            const name = document.querySelectorAll(".fish-breadcrumb-link")[2]?.textContent;
            const indexModuleWrapperECeCo = document.querySelector(".index-module_wrapper_ECeCo");
            if (indexModuleWrapperECeCo) {
                indexModuleWrapperECeCo.innerHTML = `
<div class="index-module_wrapper_ECeCo">
<div class="imageList-module_special-edu-image_A7C2c">
  <div class="index-module_header_tG-zz">
    <h3 class="index-module_title_bnE9V">${name}</h3>
    <div class="index-module_info_evO1d">
      <span class="index-module_origin_nuihE">
        <svg class="index-module_icon_dwVZ4">
          <use xlink:href="#icon_hotel_fill">
          </use>
        </svg>
        <span class="index-module_department_ewVZW">智慧中小学</span>
      </span>
      <div class="index-module_assesment-detail_jhGLz">
        <div class="index-module_assessment-content_06v6Z">
          <div class="fish-dropdown-trigger index-module_assessment-rate_euPTQ">
            <ul class="fish-rate fish-rate-disabled" tabindex="-1" role="radiogroup">
              <li class="fish-rate-star fish-rate-star-full">
                <div role="radio" aria-checked="true" aria-posinset="1" aria-setsize="5" tabindex="-1">
                  <div class="fish-rate-star-first">
                    <div class="custom-star-wrap" style="width: 100%;">
                      <div class="custom-star">
                      </div>
                    </div>
                  </div>
                  <div class="fish-rate-star-second">
                    <div class="custom-star-wrap" style="width: 100%;">
                      <div class="custom-star">
                      </div>
                    </div>
                  </div>
                </div>
              </li>
              <li class="fish-rate-star fish-rate-star-full">
                <div role="radio" aria-checked="true" aria-posinset="2" aria-setsize="5" tabindex="-1">
                  <div class="fish-rate-star-first">
                    <div class="custom-star-wrap" style="width: 100%;">
                      <div class="custom-star">
                      </div>
                    </div>
                  </div>
                  <div class="fish-rate-star-second">
                    <div class="custom-star-wrap" style="width: 100%;">
                      <div class="custom-star">
                      </div>
                    </div>
                  </div>
                </div>
              </li>
              <li class="fish-rate-star fish-rate-star-full">
                <div role="radio" aria-checked="true" aria-posinset="3" aria-setsize="5" tabindex="-1">
                  <div class="fish-rate-star-first">
                    <div class="custom-star-wrap" style="width: 100%;">
                      <div class="custom-star">
                      </div>
                    </div>
                  </div>
                  <div class="fish-rate-star-second">
                    <div class="custom-star-wrap" style="width: 100%;">
                      <div class="custom-star">
                      </div>
                    </div>
                  </div>
                </div>
              </li>
              <li class="fish-rate-star fish-rate-star-full">
                <div role="radio" aria-checked="true" aria-posinset="4" aria-setsize="5" tabindex="-1">
                  <div class="fish-rate-star-first">
                    <div class="custom-star-wrap" style="width: 100%;">
                      <div class="custom-star">
                      </div>
                    </div>
                  </div>
                  <div class="fish-rate-star-second">
                    <div class="custom-star-wrap" style="width: 100%;">
                      <div class="custom-star">
                      </div>
                    </div>
                  </div>
                </div>
              </li>
              <li class="fish-rate-star fish-rate-star-zero">
                <div role="radio" aria-checked="true" aria-posinset="5" aria-setsize="5" tabindex="-1">
                  <div class="fish-rate-star-first">
                    <div class="custom-star-wrap" style="width: 100%;">
                      <div class="custom-star">
                      </div>
                    </div>
                  </div>
                  <div class="fish-rate-star-second">
                    <div class="custom-star-wrap" style="width: 100%;">
                      <div class="custom-star">
                      </div>
                    </div>
                  </div>
                </div>
              </li>
            </ul>
            <span class="index-module_text_rukZW">5.0分</span>
          </div>
        </div>
        <span class="fish-dropdown-trigger index-module_assessment-btn_6imdF ">
          <button type="button" class="fish-btn fish-btn-round">
            <svg class="index-module_rate-icon_YM1Lc">
              <use xlink:href="#icon_evaluate_fill">
              </use>
            </svg>
            <span class="index-module_assessment-btn-text_fw-+Z">评价</span>
          </button>
        </span>
      </div>
      <div class="index-module_extra_tUQog">
        <div class="index-module_like-wrap_NbyLe  ">
          <svg class="index-module_like_qOb9K">
            <use xlink:href="#web_icon_dianzan_fill">
            </use>
          </svg>
          <div class="index-module_like-count_GXOGd">100万+</div>
        </div>
        <div class="index-module_suggestion-wrap_s+Ii+ ">
          <svg class="index-module_suggestion-icon_IrRxU">
            <use xlink:href="#icon_feedback_fill">
            </use>
          </svg>
          <div>建议</div>
        </div>
      </div>
    </div>
  </div>
  <div class="index-module_divider_rI-lg">
  </div>
  <div class="imageList-module_special-edu-image-list-wrapper_18zfs">
    <div class="imageList-module_special-edu-image-list_+ywag" style="max-width: unset;">
      <div class="course-document">
        <div class="document-context" style="overflow: hidden; height: 95%;">
          <embed src="${link}" width="100%" height="100%">
        </div>
        <div class="doc-toolbar">
          <div class="left">
          </div>
          <div class="center">
          </div>
          <div class="right">
            <div class="split-line">
            </div>
            <div class="tool-btn fullscreen" title="全屏">
            </div>
          </div>
        </div>
      </div>
    </div>
  </div>
</div>
</div>
                `;
            }
            // 全屏切换
            const fullscreenBtn = document.querySelector(".tool-btn.fullscreen");
            const courseDocument = document.querySelector(".course-document");
            const htmlElement = document.querySelector("html");
            fullscreenBtn.addEventListener("click", () => {
                if (courseDocument.classList.contains("full-screen")) { // 当前处于"全屏状态"，切换为"非全屏状态"
                    courseDocument.classList.remove("full-screen");
                    htmlElement.style.overflow = "";
                } else { // 当前处于"非全屏状态"，切换为"全屏状态"
                    courseDocument.classList.add("full-screen");
                    htmlElement.style.overflow = "hidden";
                }
            });
            // 重定向至登录页
            const toLogin = [
                document.querySelector(".fish-dropdown-trigger.index-module_assessment-btn_6imdF"),
                document.querySelector(".index-module_like-wrap_NbyLe"),
                document.querySelector(".index-module_suggestion-wrap_s\\+Ii\\+")
            ];
            toLogin.forEach(element => {
                element.addEventListener("click", () => {
                    window.open("https://auth.smartedu.cn/uias/login/");
                });
            });
        } else {
            elapsedTime += 100;
            if (elapsedTime >= maxTimeToCheck) {
                clearInterval(intervalId1); // 清除定时器，停止检查
            }
        }
    }
    const intervalId1 = setInterval(checkLoginModal, 100); // 每隔 100 毫秒检查一次 .fish-modal-root 元素是否存在

    function checkIndexModule() {
        console.log("生成链接: " + link);
        fetch(link)
            .then(response => {
            if (response.ok) {
                console.log("生成链接有效"); // 有效链接
            } else {
                console.log("生成链接无效"); // 无效链接
                link = `https://r3-ndr.ykt.cbern.com.cn/edu_product/esp/assets/${contentId}.pkg/pdf.pdf`;
            }
        })
            .catch(() => {
            console.log("检测生成链接发生错误"); // 网络错误或请求被拒绝等
        });
        const container = document.querySelector(".index-module_extra_tUQog"); // 找到要添加按钮的容器元素
        if (container && !document.querySelector(".Btns")) {
            clearInterval(intervalId2); // 清除定时器
            const div = document.createElement("div");
            div.className = "Btns";
            div.innerHTML = `<a class="link" href="${link}" style="margin-left: 24px; color: rgb(136, 136, 136);">📓 查看PDF</a><a class="download" style="margin-left: 24px; color: rgb(136, 136, 136);">📓 下载PDF</a>`; // color: rgb(0, 0, 0, 0.4) color: rgb(136, 136, 136) color: rgb(153, 153, 153)
            container.appendChild(div); // 将按钮添加到网页中
            const element1 = document.querySelector("div.Btns > a.link");
            if (element1) {
                element1.addEventListener("mouseover", function() {
                    this.innerHTML = "📘 查看PDF";
                    this.style.color = "#1e62ec"; // 鼠标移入时修改元素的样式 // #1e62ec #226dec
                });
                element1.addEventListener("mouseout", function() {
                    this.innerHTML = "📓 查看PDF";
                    this.style.color = "#888"; // 鼠标移出时恢复原来的样式 // #00000066 #888 #999999
                });
            }
            const element2 = document.querySelector("div.Btns > a.download");
            if (element2) {
                element2.addEventListener("click", function(event) { // 点击下载
                    var fileUrl = link;
                    var xhr = new XMLHttpRequest();
                    xhr.open("GET", fileUrl);
                    xhr.responseType = "blob";
                    xhr.onloadstart = function() { // 初始化进度
                        element2.innerText = "📓 下载中 ...";
                    };
                    xhr.onprogress = function(event) {
                        if (event.lengthComputable) {
                            var progress = Math.round((event.loaded / event.total) * 100);
                            element2.innerText = "📓 下载中 (" + progress + "%)";
                        }
                    };
                    xhr.onload = function() {
                        if (xhr.status === 200) {
                            var blob = xhr.response;
                            var downloadLink = document.createElement("a");
                            downloadLink.href = URL.createObjectURL(blob);
                            downloadLink.download = document.querySelector(".index-module_title_bnE9V").innerText; // 文件名
                            downloadLink.dispatchEvent(new MouseEvent("click"));
                            element2.innerText = "📓 下载PDF"; // 下载完成后恢复按钮文字
                        }
                    };
                    xhr.send(); // 发送请求
                });
            }
        } else {
            elapsedTime += 100;
            if (elapsedTime >= maxTimeToCheck) {
                clearInterval(intervalId2); // 清除定时器，停止检查
            }
        }
    }
    const intervalId2 = setInterval(checkIndexModule, 100); // 每隔 100 毫秒检查一次 index-module_extra_tUQog 元素是否存在

    const originalFetch = window.fetch; // 纠正课后阅读、备课和自学页面链接
    window.fetch = function (url, options) {
        return originalFetch(url, options).then(function(response) {
            if (response.ok && url.endsWith(".pdf")) {
                let modifiedURL = url.replace("-private", "");
                console.log("Fetched PDF (modified valid URL): " + modifiedURL);
                const element1 = document.querySelector("a.link"); // 按钮 element1
                if (element1) {
                    element1.href = modifiedURL; // 修改 element1 的链接
                }
                link = modifiedURL; // 修改 element2 的链接
                const prepContainer = document.querySelector(".index-module_resource-info__fav_3xNjm"); // 备课页面添加按钮
                if (prepContainer && !document.querySelector(".index-module_resource-info__fav_3xNjm > div > .link")) {
                    const div = document.createElement("div");
                    div.setAttribute("style", "display: flex; align-items: center;");
                    div.innerHTML = `<a class="link" href="${modifiedURL}" target="_blank" style="color: rgb(136, 136, 136);">📓 查看PDF</a>`; // 待纠正时更新链接
                    prepContainer.appendChild(div);
                }
                const syncClassSuggestion = document.getElementsByClassName("index-module_suggestion-wrap_s+Ii+ suggestion")[0]; // 自学页面添加按钮
                if (syncClassSuggestion && !document.querySelector("div > .link")) {
                    const div = document.createElement("div");
                    div.setAttribute("style", "display: flex; align-items: center; margin-left: 30px");
                    div.innerHTML = `<a class="link" href="${modifiedURL}" target="_blank" style="color: rgb(136, 136, 136);">📓 查看PDF</a>`; // 待纠正时更新链接
                    syncClassSuggestion.insertAdjacentElement("afterend", div);
                }
            }
            return response;
        });
    };

    function checkIndexModules() {
        const old_added_PDF_btns = document.querySelectorAll(".PDF-btns");
        if (old_added_PDF_btns) {
            old_added_PDF_btns.forEach(element => {
                element.remove();
            });
        }
        const item = document.querySelectorAll("li.index-module_item_GfOnF");
        if (item) {
            const img = document.querySelectorAll("div.index-module_cover_DGT6P > img");
            let pdfArray = []; // 声明PDF空数组
            for (let i = 0; i < img.length; i++) {
                if (img[i]) {
                    clearInterval(intervalId3); // 查找到 img，清除定时器停止检查
                    const src = img[i].getAttribute("src");
                    let pdf;
                    if (src.includes("esp/assets/")) {
                        let extractedText = src.match(/assets\/(.*?)\./)[1];
                        pdf = `https://r3-ndr.ykt.cbern.com.cn/edu_product/esp/assets/${extractedText}.pkg/pdf.pdf`;
                    } else if (src.includes("esp/assets_document/")) {
                        let extractedText = src.match(/assets_document\/(.*?)\./)[1];
                        pdf = `https://r3-ndr.ykt.cbern.com.cn/edu_product/esp/assets_document/${extractedText}.pkg/pdf.pdf`;
                    } else if (src.includes("65/document/")) {
                        let extractedText = src.match(/document\/(.*?)\/image/)[1];
                        pdf = `https://v3.ykt.cbern.com.cn/65/document/${extractedText}/pdf.pdf`;
                    } else {
                        console.log("未识别链接");
                        pdf = `undefined`;
                    }
                    if (pdf) {
                        pdfArray.push(pdf); // 将 pdf 添加到数组中
                        console.log(`pdf${i + 1}: ${pdf}`);
                    }
                }
            }
            const content = document.querySelectorAll("div.index-module_content_KmLzG");
            for (let i = 0; i < content.length; i++) {
                if (content[i]) {
                    content[i].setAttribute("style", "width: 500px;"); // 统一 content 宽度
                }
            }
            const contentName = document.querySelectorAll("div.index-module_line_LgJAC");
            const added_PDF_btns = document.querySelectorAll("li.index-module_item_GfOnF > div.PDF-btns");
            for (let i = 0; i < item.length; i++) {
                if (item[i] && !added_PDF_btns[i] && pdfArray[i]) {
                    const PDF_btns = document.createElement("div"); // 创建 PDF_btns
                    PDF_btns.setAttribute("class", "PDF-btns");
                    PDF_btns.innerHTML = `
                        <a type="button" class="fish-btn" style="margin-left: 24px; margin-bottom: 5px;" href="${pdfArray[i]}" target="_blank">查看PDF</a>
                        <a type="button" class="fish-btn fish-btn-primary" style="margin-left: 24px; margin-bottom: 5px;">下载PDF</a>
                    `;
                    item[i].appendChild(PDF_btns); // 将 PDF_btns 添加到父元素中
                    if (pdfArray[i] !== "undefined") {
                        PDF_btns.addEventListener("click", function(event) { // 停止 PDF_btns 的点击事件向更上一层元素传播
                            event.stopPropagation();
                        });
                    } else {
                        PDF_btns.addEventListener("click", function(event) { // 链接 undefined 则阻止默认点击行为
                            event.preventDefault();
                        });
                    }
                    const element2 = document.querySelectorAll("div.PDF-btns > a.fish-btn.fish-btn-primary")[i];
                    if (element2) {
                        element2.addEventListener("click", function(event) { // 点击下载
                            var fileUrl = pdfArray[i];
                            var xhr = new XMLHttpRequest();
                            xhr.open("GET", fileUrl);
                            xhr.responseType = "blob";
                            xhr.onloadstart = function() { // 初始化进度
                                element2.innerText = "下载中 ...";
                            };
                            xhr.onprogress = function(event) {
                                if (event.lengthComputable) {
                                    var progress = Math.round((event.loaded / event.total) * 100);
                                    element2.innerText = "下载中 (" + progress + "%)";
                                }
                            };
                            xhr.onload = function() {
                                if (xhr.status === 200) {
                                    var blob = xhr.response;
                                    var downloadLink = document.createElement("a");
                                    downloadLink.href = URL.createObjectURL(blob);
                                    downloadLink.download = contentName[i].querySelector("span").getAttribute("title"); // 文件名
                                    downloadLink.dispatchEvent(new MouseEvent("click"));
                                    element2.innerText = "下载PDF"; // 下载完成后恢复按钮文字
                                }
                            };
                            xhr.send(); // 发送请求
                        });
                    }
                }
            }
        } else {
            elapsedTime += 100;
            if (elapsedTime >= maxTimeToCheck) {
                clearInterval(intervalId3); // 清除定时器，停止检查
            }
        }
    }
    let intervalId3 = setInterval(checkIndexModules, 100); // 每隔 100 毫秒检查一次

    function doItAgain() {
        clearInterval(intervalId3); // 防止多次启动定时器
        elapsedTime = 0; // 逝去时间归零
        intervalId3 = setInterval(checkIndexModules, 100); // 创建新的定时器以待调用
    }

    const observer = new MutationObserver(function(mutations) { // 创建一个MutationObserver
        mutations.forEach(function(mutation) {
            if (mutation.addedNodes && mutation.addedNodes.length > 0) { // 检查是否有新增节点
                for (let i = 0; i < mutation.addedNodes.length; i++) {
                    const addedNode = mutation.addedNodes[i];
                    if (addedNode.textContent.includes("下载") || addedNode.classList && addedNode.classList.contains("PDF-btns")) { // 判断是否含"下载"或节点的 classList 中是否存在 PDF-btns 类名
                        console.log("PDF-btns变化");
                    } else {
                        console.log("DOM树已变化");
                        doItAgain(); // 执行新的定时器
                    }
                }
            }
        });
    });
    const config = { // 配置需要观察的内容
        childList: true, // 监听子节点的变化
        subtree: true // 监听所有后代节点的变化
    };
    observer.observe(document.body, config);

})();