#!/usr/bin/env node
const { resolve, join } = require('path')
const { existsSync } = require('fs')
const parseArgs = require('minimist')
const del = require('del')

const { build } = require('@healthline/six-million')
const createWebpack = require('../node/server/webpack').default

process.env.NODE_ENV = process.env.NODE_ENV || 'production'

const argv = parseArgs(process.argv.slice(2), {
  alias: {
    h: 'help'
  },
  boolean: ['h']
})

if (argv.help) {
  console.log(`
    Description
      Compiles the application for production deployment

    Usage
      $ next build <dir>

    <dir> represents where the compiled dist folder should go.
    If no directory is provided, the dist folder will be created in the current directory.
    You can set a custom folder in config https://github.com/zeit/next.js#custom-configuration, otherwise it will be created inside '.next'
  `)
  process.exit(0)
}

const dir = resolve(argv._[0] || '.')

// Check if pages dir exists and warn if not
if (!existsSync(dir)) {
  console.error(`> No such directory exists as the project root: ${dir}`)
  process.exit(1)
}

del(join(dir, '.next'), { force: true })
  .then(() => build(dir, argv.s, createWebpack))
  .catch((err) => {
    console.error(err)
    process.exit(1)
  })