#!/usr/bin/env node
const fs = require('fs')
const globby = require('globby')
const {join} = require('path')

const getPackages = (debug = false) => {
  const lernaConfig = require('../lerna.json')
  const packageGlobs = lernaConfig.packages.concat('!**/*.md')
  return globby(packageGlobs)
    .then(packagePaths => {
      if (debug) {
        console.warn(`Filtering ${packagePaths.length} paths...`)
      }
      return packagePaths.filter(pkg => {
        try {
          require.resolve(join('..', pkg, 'package.json'))
          return true
        } catch (error) {
          if (debug) {
            console.warn(`No package.json in ${pkg}: ${error}`)
          }
          return false
        }
      })
    })
}

if (module.parent) {
  module.exports = getPackages
} else {
  getPackages(true).then(packages => {
    console.warn('%d packages:', packages.length)
    packages.forEach(pkg => console.log(pkg))
  })
}