~/src auto archiver

autoarchive.js

// Scan CWD for directories modified longer than 365 days ago and move them to a new directory based on the current date in the archive directory.
// No dependencies, so only built-in modules are used.
// Just stick this in a directory and `node autoarchive.js`.

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

function leftPad(num, len) {
  return num.toString().padStart(len, '0');
}

const cwd = process.cwd();
const now = new Date();
const nowYear = now.getFullYear();
const nowMonth = leftPad(now.getMonth() + 1, 2);
const nowDay = leftPad(now.getDate(), 2);
const nowDate = `${nowYear}-${nowMonth}-${nowDay}`;
const archiveDir = path.join(cwd, 'archive');
const archiveSubDir = path.join(archiveDir, nowDate)
const SKIP_DIRS = ['archive'];

if (!fs.existsSync(archiveDir)) {
  fs.mkdirSync(archiveDir);
}

fs.readdir(cwd, (err, files) => {
  if (err) {
    console.error(err);
    return;
  }

  files.forEach(file => {
    const stats = fs.statSync(file);
    const mtime = stats.mtime;
    const diff = now - mtime;
    const diffDays = diff / (1000 * 60 * 60 * 24);
    const diffYears = diffDays / 365;

    if (stats.isDirectory()) {
      if (SKIP_DIRS.includes(file)) {
        return;
      }

      if (diffDays > 365) {
        console.log(`(${diffYears.toFixed(2)} years stale) Moving: ${file}`);

        if (!fs.existsSync(archiveSubDir)) {
          fs.mkdirSync(archiveSubDir);
        }

        fs.rename(file, path.join(archiveSubDir, file), err => {
          if (err) {
            console.error(err);
          }
        });
      } else {
        console.log(`(${diffYears.toFixed(2)} years stale) Keeping: ${file}`);
      }
    }
  });
});