#!/usr/bin/env node

const { delimiter } = require('path')
const { forEach, fromEvent } = require('promise-toolbox')
const { spawn } = require('child_process')

const { getPackages } = require('./utils')

const { env } = process

// run a script for each package (also run pre and post)
//
// TODO: https://docs.npmjs.com/misc/scripts#environment
require('exec-promise')(([ script ]) =>
  getPackages(true).forEach(({ dir, name, package: { scripts } }) => {
    if (scripts == null) {
      return
    }

    const spawnOpts = {
      cwd: dir,
      env: Object.assign({}, env, {
        PATH: `${dir}/node_modules/.bin${delimiter}${env.PATH}`,
      }),
      shell: true,
      stdio: 'inherit',
    }
    return forEach.call(
      [ `pre${script}`, script, `post${script}` ],
      script => {
        const command = scripts[script]
        if (command !== undefined) {
          console.log(`* ${name}:${script}`)
          return fromEvent(spawn(command, spawnOpts), 'exit').then(code => {
            if (code !== 0) {
              throw code
            }
          })
        }
      }
    )
  })
)