SOURCE

function sleep(ms) {
  return new Promise((resolve) => setTimeout(resolve, ms));
}

// 获取节点文本内容
function getChildTextList(node) {
  const nodeList = node.childNodes;
  let str = [];
  if (nodeList) {
    for (let i = 0; i < nodeList.length; i++) {
      const curNode = nodeList[i];
      if (curNode.nodeName === "#text") {
        const curStr = curNode.nodeValue.trim().replace(/\n/g, "");
        if (curStr) {
          str.push(curStr);
        }
      } else {
        str.push(...getChildTextList(curNode));
      }
    }
  }
  return str;
}

function getChildText(node) {
  return getChildTextList(node).join("\n");
}

// 获取特殊文本结构信息 如作者
function getSpecialSubTitle(node) {
  let cur = node;
  let str = "";
  try {
    while (cur && cur.nodeName !== "BR") {
      if (cur.nodeName === "#text") {
        str += cur.nodeValue.trim().replace(/\n/g, "");
      } else if (cur.nodeName === "A") {
        str += cur.innerText;
      }
      cur = cur.nextSibling;
    }
  } catch (err) {
    console.error(err);
  }
  return str;
}

// 获取基本信息
function getSubtitle(key) {
  const list = document.querySelectorAll("#info .pl");
  const node = Array.prototype.slice
    .apply(list)
    .find((el) => el.innerText.includes(key));
  if (node) {
    if (node.nextSibling?.nextSibling?.nodeName === "A") {
      return getSpecialSubTitle(node.nextSibling.nextSibling);
    }
    return node.nextSibling.nodeValue.trim();
  }
  return "";
}

// 获取相关信息
function getIntroContent(key, option = {}) {
  const { isFull, isAll } = option;
  const list = document.querySelectorAll(".related_info h2");
  if (isFull) {
    const node = Array.prototype.slice
      .apply(list)
      .find((el) => el.innerText.includes(key));
    if (node && node.nextElementSibling) {
      const fullNode = node.nextElementSibling.nextElementSibling;
      if (
        fullNode &&
        fullNode.classList.contains("indent") &&
        fullNode.id.includes("full")
      ) {
        const str = getChildText(fullNode);
        return str.replace("\n· · · · · ·     (\n收起\n)", "");
      } else if (node.nextElementSibling.classList.contains("indent")) {
        return getChildText(node.nextElementSibling);
      }
    }
  } else if (isAll) {
    const nodeList = Array.prototype.slice
      .apply(list)
      .filter(
        (el) =>
          el.innerText.includes(key) &&
          !!el.nextElementSibling &&
          el.nextElementSibling.classList.contains("indent")
      );
    const node = nodeList.find(
      (el) => !!el.nextElementSibling.querySelector(".all .intro")
    );
    if (node) {
      return getChildText(node.nextElementSibling.querySelector(".all .intro"));
    } else if (nodeList.length > 0) {
      return getChildText(
        nodeList[0].nextElementSibling.querySelector(".intro")
      );
    }
  }
  return "";
}

async function work() {
  await sleep(1000);
  // 封面图片
  var bookFace = document.querySelector("div.book-pic > div.pic").firstElementChild.src;
  // 标题
  var title = document.querySelector("div.book-title").firstElementChild.innerText;
  // 多个渠道的主标题列表
  var titleList = "";
  // 副标题
  var subTitle = getSubtitle("副标题");
  // 作者
  var author = document.querySelector("div.book-details-left > table > tbody > tr:nth-child(1) > td:nth-child(2)").innerText;
  // 译者
  var translator = getSubtitle("译者");
  // 出版社
  var press =document.querySelector("div.book-details-left > table > tbody > tr:nth-child(2) > td:nth-child(2) > a").innerText;
  // 出版时间
  var pubTime = document.querySelector("body > div:nth-child(6) > div.bookdetails-left > div.book-details > table > tbody > tr:nth-child(1) > td:nth-child(4)").innerText;
  // 定价
  var price = getSubtitle("定价");
  // 开本
  var kaiBen = "";
  // 纸张
  var paper = "";
  // 包装
  var pack = "";
  // 是否套装
  var isTaoZhuang = "";
  // 字数
  var charNum = "";
  // 页数
  var pageNum = getSubtitle("页数");
  // 版次
  var version = "";
  // 装帧
  var zhuangZhen = getSubtitle("装帧");
  // 丛书
  var series = getSubtitle("丛书");
  // isbn
  var isbn = getSubtitle("ISBN");
  // 编辑推荐
  var editorRec = "";
  // 内容简介
  var contentIntro = getIntroContent("内容简介", { isAll: true });
  // 作者简介
  var authorIntro = getIntroContent("作者简介", { isAll: true });
  // 媒体评论
  var mediaComment = "";
  // 目录
  var sections = getIntroContent("目录", { isFull: true });
  // 商详
  var businessDetails = "";
  // url
  var itemUrl = location.href;
  // 所属分类
  var bookClass = "";
  // 作者国籍
  var nationality = "";
  // 货币符号
  var currencySymbol = "";
  // 爬虫侧的key标识
  var itemKey = "";
  // 网站来源id:1-当当网,2-豆瓣读书,3-读书网,4-中国图书网,5-国家图书馆,6-京东,7-亚马逊中国,8-QS查询(QS),9-QS查询(SC)
  var sourceId = 2;
  var sourceName = "豆瓣读书";
  // 原作名
  var oldTitle = getSubtitle("原作名");
  // 轮播图
  var showImg = "";
  // 书摘插画
  var illustration = "";
  // 商品重量
  var weight = "";
  // 免费在线读
  var freeRead = "";
  // 册数
  var bookNum = "";
  // 原始封面
  var originalGraph = "";
  // 不清晰封面
  var unClearImg = "";

  // 结果
  var result = {
    bookFace,
    title,
    titleList,
    subTitle,
    author,
    translator,
    press,
    pubTime,
    price,
    kaiBen,
    paper,
    pack,
    isTaoZhuang,
    charNum,
    pageNum,
    version,
    zhuangZhen,
    series,
    isbn,
    editorRec,
    contentIntro,
    authorIntro,
    mediaComment,
    sections,
    businessDetails,
    itemUrl,
    bookClass,
    nationality,
    currencySymbol,
    itemKey,
    sourceId,
    sourceName,
    oldTitle,
    showImg,
    illustration,
    weight,
    freeRead,
    bookNum,
    originalGraph,
    unClearImg,
  };
  console.log("bookIsbnResult:", result);
  window.chief.submit("bookIsbnResult", result);
  window.chief.stop();
}

work();