newCashBook/epub_node/router/epub/index.js

// 添加账本
import { getFileBymd5 } from "#db";
import logger from "#logger";
import path from "node:path";
import fs from "node:fs";
import express from "express";
import { EPub } from "epub2";

import { saveImgs } from "./image.js";

const router = express.Router();

// middleware that is specific to this router
router.use(function timeLog(req, res, next) {
  next();
});
// define the home page route
router.get("/", async function (req, res) {
  res.send("epub types");
});
// define the about route
router.get("/about", function (req, res) {
  res.send("About types");
});

router.get("/img/:fileId", async function (req, res) {
  const fileId = req.params.fileId; // 获取 fileId 参数
  logger.info(`Found ${fileId}`);
  const fileRow = await getFileBymd5(fileId);

  if (!fileRow) {
    return res.status(404).send("文件查询失败");
  }

  const uploadPath = "./base_files/" + fileId;
  console.log("uploadPath", uploadPath);
  const filePath = path.resolve(uploadPath);
  console.log("filePath", filePath);
  // 检查文件是否存在
  if (!fs.existsSync(filePath)) {
    return res.status(404).send("服务器中不存在该文件");
  }

  // 返回文件
  res.setHeader("Content-Type", fileRow.mimetype);
  res.sendFile(filePath);
});


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

  if (!req.files || Object.keys(req.files).length === 0) {
    return res.status(400).send("No files were uploaded.");
  }

  sampleFile = req.files.file;
  console.log(4545, sampleFile);

  const file_md5 = sampleFile.md5;

  var epub = await EPub.createAsync(sampleFile.data, null, "");
  console.log(4545, epub.metadata);
  // console.log('manifest__', epub.manifest);

  // Object.keys(epub.metadata).forEach((objKey) => {
  //   console.log(464646, objKey, epub.metadata[objKey]);
  // });
  // let imgs = epub.listImage();
  // await epub.getImageAsync(imgs[0].id).then( function([data, mimeType]){

  //   console.log(`\ngetImage: cover\n`);

  //   console.log(data);
  //   console.log(mimeType)
  // });
  /* 
    1、读取图片信息
    2、替换文件中的图片内容
    3、存储html数据
   */
  await saveImgs(epub);
  res.send("About types");
});

export default router;