#!/usr/bin/env node
const execa = require('execa')
const fse = require('fs-extra')
const globby = require('globby')

const revertPackages = () => {
  const lernaConfig = require('../lerna.json')
  const globs = lernaConfig.packages
  const jsons = globs.map(glob => glob + '/package.json')
  const tarballs = globs.map(glob => glob + '/*.tgz')
  const opts = {stdio: 'inherit'}
  return Promise.all([
    execa('git', ['checkout', '--'].concat(globs), opts),
    globby(tarballs)
      .then(paths => {
        if (paths.length) {
          console.warn('deleting %d tarball(s)', paths.length)
          return Promise.all(
            paths.map(tgz => fse.remove(tgz))
          )
        }
      }),
  ])
}

if (module.parent) {
  module.exports = revertPackages
} else {
  revertPackages().then(() => process.exit(0))
}