#!/usr/bin/env node
const parseArgs = require('minimist')
const consola = require('consola')
const { Nuxt, Builder, Generator } = require('..')
const { loadNuxtConfig } = require('./common/utils')

const argv = parseArgs(process.argv.slice(2), {
  alias: {
    h: 'help',
    c: 'config-file',
    a: 'analyze',
    s: 'spa',
    u: 'universal'
  },
  boolean: ['h', 'a', 's', 'u'],
  string: ['c'],
  default: {
    c: 'nuxt.config.js'
  }
})

if (argv.help) {
  process.stderr.write(`
    Description
      Compiles the application for production deployment
    Usage
      $ nuxt build <dir>
    Options
      --analyze, -a        Launch webpack-bundle-analyzer to optimize your bundles.
      --spa                Launch in SPA mode
      --universal          Launch in Universal mode (default)
      --no-generate        Don't generate static version for SPA mode (useful for nuxt start)
      --config-file, -c    Path to Nuxt.js config file (default: nuxt.config.js)
      --help, -h           Displays this message
  `)
  process.exit(0)
}

const options = loadNuxtConfig(argv)

// Create production build when calling `nuxt build`
options.dev = false

// Analyze option
options.build = options.build || {}
if (argv.analyze && typeof options.build.analyze !== 'object') {
  options.build.analyze = true
}

const nuxt = new Nuxt(options)
const builder = new Builder(nuxt)

// Setup hooks
nuxt.hook('error', err => consola.fatal(err))

// Close function
const close = () => {
  // In analyze mode wait for plugin
  // emitting assets and opening browser
  if (options.build.analyze === true || typeof options.build.analyze === 'object') {
    return
  }

  process.exit(0)
}

if (options.mode !== 'spa' || argv.generate === false) {
  // Build only
  builder
    .build()
    .then(close)
    .catch(err => consola.fatal(err))
} else {
  // Build + Generate for static deployment
  new Generator(nuxt, builder)
    .generate({ build: true })
    .then(close)
    .catch(err => consola.fatal(err))
}