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

function sanitize(name) {
  return name.replace(/[\/\\:*?"<>|]/g, '_').trim();
}

function sanitizePathSegment(name, fallback) {
  const value = sanitize(String(name || '')).replace(/[. ]+$/g, '');
  return value && value !== '.' && value !== '..' ? value : fallback;
}

function formatPersonNames(value) {
  return typeof value === 'string' ? value.replace(/\s*\/\s*/g, ' / ') : value;
}

function sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}

function getDirSize(dirPath) {
  let size = 0;
  try {
    for (const item of fs.readdirSync(dirPath)) {
      const itemPath = path.join(dirPath, item);
      const stat = fs.statSync(itemPath);
      size += stat.isDirectory() ? getDirSize(itemPath) : stat.size;
    }
  } catch {}
  return size;
}

module.exports = { sanitize, sanitizePathSegment, formatPersonNames, sleep, getDirSize };