newCashBook/node_expores/router/epub/index.js

import express from "express";
import path from "path";
import fs from "node:fs";
import { EPub } from "epub2";

const router = express.Router();

router.use(function timeLog(req, res, next) {
  console.log("Time: ", Date.now());
  next();
});

// define the about route
router.put("/", function (req, res) {
  let sampleFile;

  if (!req.files || Object.keys(req.files).length === 0) {
    return res.status(400).send("No files were uploaded.");
  }
  sampleFile = req.files.file;
  EPub.createAsync(sampleFile.data, "", null)
    .then(async function (epub) {
      console.log(epub.filename.length);

      console.log("METADATA:\n");
      // console.log(epub['Symbol(rawData)']);
      console.log(epub);

      // console.log(23, epub.filename);

      // console.log("METADATA:\n");
      // console.log(epub.metadata);

      // console.log("\nSPINE:\n");
      // console.log(epub.flow);

      // console.log("\nTOC:\n");
      // console.log(epub.toc);

      // get first chapter
      // await epub
      //   .getChapterAsync(epub.spine.contents[1].id)
      //   .then(function (data) {
      //     console.log(383838, data);
      //   });
      // console.log("\nmanifest:\n");
      // console.log(epub.manifest);

      // console.log("\nlistImage:\n");
      // let imgs = epub.listImage();
      // imgs.forEach((elm) => {
      //   if (elm.id.indexOf("cover") > -1) {
      //     console.log(505050, elm);
      //   }
      // });

      // await epub
      //   // .getImageAsync(imgs[imgs.length - 2].id)
      //   .getImageAsync('cover-image')
      //   .then(([bufferData, mimeType]) => {
      //     console.log(`\ngetImage: cover\n`);

      //     console.log(52, bufferData);
      //     console.log(52, mimeType);
      //     // 返回文件
      //     // res.setHeader("Content-Type", mimeType);
      //     // res.sendFile(data);

      //     // 设置响应头，指定内容类型为 PNG 图片
      //     res.writeHead(200, {
      //       "Content-Type": mimeType,
      //       "Content-Length": bufferData.length,
      //     });

      //     // 将 Buffer 数据发送到客户端
      //     res.end(bufferData);
      //   });
    })
    .catch(function (err) {
      console.log("ERROR\n-----");
      throw err;
    });
  res.send("About files");
});

export default router;