'use strict'

const u = require('universalify').fromCallback
const path = require('path')
const fs = require('graceful-fs')
const mkdir = require('../mkdirs')
const pathExists = require('../path-exists').pathExists

function createFile (file, callback) {
  function makeFile () {
    fs.writeFile(file, '', err => {
      if (err) return callback(err)
      callback()
    })
  }

  pathExists(file, (err, fileExists) => {
    if (err) return callback(err)
    if (fileExists) return callback()
    const dir = path.dirname(file)
    pathExists(dir, (err, dirExists) => {
      if (err) return callback(err)
      if (dirExists) return makeFile()
      mkdir.mkdirs(dir, err => {
        if (err) return callback(err)
        makeFile()
      })
    })
  })
}

function createFileSync (file) {
  if (fs.existsSync(file)) return

  const dir = path.dirname(file)
  if (!fs.existsSync(dir)) {
    mkdir.mkdirsSync(dir)
  }

  fs.writeFileSync(file, '')
}

module.exports = {
  createFile: u(createFile),
  createFileSync
}