import sh from 'shelljs'
import { Arguments } from 'yargs'

import * as paths from '../config/paths'
import { spawnSync } from '../utils/spawn'
import { parseConfig } from '../config/docz'

export const serve = async (args: Arguments<any>) => {
  const config = await parseConfig(args)
  const cliArgs = ['run', 'serve']

  if (config.port) {
    cliArgs.push('--')
    // Append gatsby option `port` to CLI args
    // https://www.gatsbyjs.org/docs/cheat-sheet/#cheat_sheet-text
    cliArgs.push('--port')
    cliArgs.push(String(config.port))
  }

  if (config.host) {
    // Append gatsby option `host` to CLI args
    // https://www.gatsbyjs.org/docs/cheat-sheet/#cheat_sheet-text
    cliArgs.push('--host')
    cliArgs.push(String(config.host))
  }

  sh.cd(paths.docz)
  spawnSync('npm', cliArgs)
}