filesys.js

// do file management

const fs = require('fs')

module.exports = {
  // get a tree: takes the root (relative the process) and returns all branches below,
  // includes route-to-root in list
  getDirTree: (dir, debug) => {
    return new Promise((resolve, reject) => {
      // items and count,
      let list = []
      let count = 0
      // recursor,
      let launch = (dir) => {
        if(debug) console.log('GDT launch at', dir)
        // just counting actually,
        count ++
        fs.readdir(dir, (err, files) => {
          if(err){
            reject(err)
          }
          count --
          for (file of files) {
            if (file.includes('.')) {
              if(debug) console.log('GDT pushing', `${dir}\\${file}`)
              list.push(`${dir.substring(__dirname.length)}\\${file}`)
            } else {
              launch(`${dir}\\${file}`)
            }
          }
          if(debug) console.log('GDT size', count)
          if(!count){
            // we sort,
            list.sort()
            resolve(list)
          }
        }) // end fs.readdir
      } // end launch
      launch(`${__dirname}\\${dir}`)
    })
  }
}