koa2-starter/lib/options.js

Koa2 application generator.

const path = require('path')
const metadata = require('read-metadata')
const exists = require('fs').existsSync
const getGitUser = require('./git-user')

function options (name, dir) {
  const opts = getMetadata(dir)

  setDefault(opts, 'name', name)

  const author = getGitUser()
  if (author) {
    setDefault(opts, 'author', author)
  }

  return opts
}

function getMetadata (dir) {
  const json = path.join(dir, 'meta.json')
  const js = path.join(dir, 'meta.js')
  let opts = {}

  if (exists(json)) {
    opts = metadata.sync(json)
  } else if (exists(js)) {
    const req = require(path.resolve(js))
    if (req !== Object(req)) {
      throw new Error('meta.js needs to expose an object')
    }
    opts = req
  }

  return opts
}

function setDefault (opts, key, val) {
  if (opts.schema) {
    opts.prompts = opts.schema
    delete opts.schema
  }
  const prompts = opts.prompts || (opts.prompts = {})
  if (!prompts[key] || typeof prompts[key] !== 'object') {
    prompts[key] = {
      'type': 'string',
      'default': val
    }
  } else {
    prompts[key]['default'] = val
  }
}

module.exports = options