// @flow

import type { Config } from './types'

export const createConfig = (provided: Object = {}): Config => ({
  mainframe_secret: provided.mainframe_secret || process.env.MAINFRAME_SECRET,
  mainframe_url:
    provided.mainframe_url ||
    process.env.MAINFRAME_URL ||
    'https://api.mainframe.com/bots/v1',
  port:
    provided.port || process.env.PORT ? parseInt(process.env.PORT, 10) : 4000,
})

export const validateConfig = (config: Config) => {
  if (!config.mainframe_secret) {
    throw new Error('Missing Mainframe secret')
  }
}