covers-extractor/src/covers-extractor.js

This library extract cover from a lot of document formats from exact folder

const path = require("path");
const fsReaddirRecursive = require("fs-readdir-recursive");
const pathNormalizer = require("./helpers/pathNormalizer");
const { pdfParser } = require("./parsers/pdf");
const djvuParser = require("./parsers/djvu");
const officeParser = require("./parsers/office");
const ebookParser = require("./parsers/ebook");

const coversExtractor = async (sourceDir, outDir = "~/paperbacks") => {
  const absoluteSourceDir = pathNormalizer.inputDirectory(sourceDir);
  const absoluteOutDir = pathNormalizer.outputDirectory(outDir);

  if (absoluteSourceDir && absoluteOutDir) {
    let all = fsReaddirRecursive(absoluteSourceDir);

    all.forEach(file => pathNormalizer.fileName(path.join(absoluteSourceDir, file)));
    all = fsReaddirRecursive(absoluteSourceDir);

    const PDFfiles = all.filter(file => file.endsWith(".pdf"));
    const DJVUfiles = all.filter(file => file.endsWith(".djvu"));
    const ebookSupportedFormats = /((azw4)|(chm)|(epub)|(fb2)|(htlz)|(html)|(lit)|(lrf)|(mobi)|(odt)|(pdb)|(pml)|(rb)|(snb)|(tcr)|(txt))$/;
    const EBOOKfiles = all.filter(file => file.match(ebookSupportedFormats));
    const officeSupportedFormats = /((csv)|(docx?)|(xlsx?)|(pptx?)|(dotx)|(vsdx?)|(rtf))$/;
    const OFFICEfiles = all.filter(file => file.match(officeSupportedFormats));

    await Promise.all([
      pdfParser(PDFfiles, absoluteSourceDir, absoluteOutDir),
      djvuParser(DJVUfiles, absoluteSourceDir, absoluteOutDir),
      officeParser(OFFICEfiles, absoluteSourceDir, absoluteOutDir),
      ebookParser(EBOOKfiles, absoluteSourceDir, absoluteOutDir),
    ]);
  }
};

module.exports = coversExtractor;