#!/usr/bin/env node

const co = require('co')
const fs = require('fs-extra')
const pify = require('pify')
const { resolve, join, basename } = require('path')
const { existsSync, writeFile } = require('fs')
const mkdirp = pify(fs.mkdirp)

const rootDir = resolve(process.argv.slice(2)[0] || '.')

if (basename(rootDir) === 'pages') {
  console.warn('Your root directory is named "pages". This looks suspicious. You probably want to go one directory up.')
  process.exit(0)
}

co(function * () {
  yield new Promise((resolve) => setTimeout(resolve, 0)) // avoid undefined variables basePackage, etc.
  if (!existsSync(rootDir)) {
    yield mkdirp(rootDir)
  }
  if (!existsSync(join(rootDir, 'package.json'))) {
    yield pify(writeFile)(join(rootDir, 'package.json'), basePackage.replace(/my-app/g, basename(rootDir)))
  }
  if (!existsSync(join(rootDir, 'nuxt.config.js'))) {
    yield pify(writeFile)(join(rootDir, 'nuxt.config.js'), baseConfig)
  }
  if (!existsSync(join(rootDir, 'static'))) {
    yield mkdirp(join(rootDir, 'static'))
  }
  if (!existsSync(join(rootDir, 'pages'))) {
    yield mkdirp(join(rootDir, 'pages'))
    yield pify(writeFile)(join(rootDir, 'pages', 'index.vue'), basePage)
  }
})
.then(() => {
  console.log('Nuxt project [' + basename(rootDir) + '] created')
})
.catch((err) => {
  console.error(err)
  process.exit(1)
})

const basePackage = `{
  "name": "my-app",
  "description": "",
  "dependencies": {
    "nuxt": "latest"
  },
  "scripts": {
    "start": "nuxt"
  }
}
`

const baseConfig = `module.exports = {
  // Nuxt.js configuration file
  // Please look at https://nuxtjs.org/docs/config-file
}
`

const basePage = `<template>
  <p>Hello {{ name }}!</p>
</template>

<script>
export default {
  data () {
    return { name: 'world' }
  }
}
</script>

<style>
p {
  font-size: 20px;
  text-align: center;
  padding: 100px;
}
</style>
`