Archive downloads in YYYY-MM folders

archive-downloads.js

/*
call this way:
  node script.js /path/to/Downloads/folder
*/

const fs = require('fs');
const path = require('path');

function now () { return new Date() }

function folderName (date = now()) {
  const year = date.getUTCFullYear();
  const month = date.getUTCMonth() + 1;
  const directory = `${year}-${ ( (month < 10) ? ('0' + month) : month ) }`;
  return directory;
}

function buildFile (filename, cwd) {
  const filepath = path.join(cwd, filename)
  const stat = fs.statSync(filepath);
  const birthtime = stat.birthtime;
  // const year = getYear(birthtime);
  // const month = getMonth(birthtime);
  // const directory = `${year}-${startWithZero(month + 1)}`;
  const directory = folderName(birthtime);
  return {
    filename,
    filepath,
    directory
  }
}

function ensureFolders (results) {
  for (dir in results) {
    if (!fs.existsSync(dir)){
      fs.mkdirSync(dir);
    }
  }
}

function moveFilesToFolders (results) {
  for (dir in results) {
    results[dir].forEach(file => {
      fs.renameSync(file.filepath, path.join(dir, file.filename));
    });
  }
}

function main (cwd) {
  const now = new Date();
  // const fyear = getYear(now);
  // const fmonth = getMonth(now);
  // const thismonth = `${fyear}-${startWithZero(fmonth + 1)}`;
  const thismonth = folderName(now);

  const files = fs.readdirSync(cwd);
  const results = {};
  let i = 0;
  files.forEach(file => {
    // const filepath = path.join(cwd, file);
    const File = buildFile(file, cwd);
    if ( (file != "desktop.ini") && (file != File.directory) && (thismonth != File.directory) && !(/^[0-9]{4}-[0-9]{2}$/.test(file)) ) {
      const directory = path.join(cwd, File.directory);
      if (!results[directory]) results[directory] = [];

      results[directory].push(File);
      i++;
    }
  });

  console.log(`${i} / ${files.length} needs to be moved`)
  for (key in results) {
    console.log(key, ':');
    results[key].forEach(f => console.log('  ', f.filepath));
  }

  ensureFolders(results);
  moveFilesToFolders(results);
}

const downloads = process.argv[2];

downloads && main(downloads);