const program = require('commander')
const loadInit = require('./init')
const loadStart = require('./start')
const loadInvalidUsernames = require('./invalidUsernames')
const loadMigrateLegacyResources = require('./migrateLegacyResources')
const loadUpdateIndex = require('./updateIndex')
const { spawnSync } = require('child_process')
const path = require('path')

module.exports = function startCli (server) {
  program.version(getVersion())

  loadInit(program)
  loadStart(program, server)
  loadInvalidUsernames(program)
  loadMigrateLegacyResources(program)
  loadUpdateIndex(program)

  program.parse(process.argv)
  if (program.args.length === 0) program.help()
}

function getVersion () {
  try {
    // Obtain version from git
    const options = { cwd: __dirname, encoding: 'utf8' }
    const { stdout } = spawnSync('git', ['describe', '--tags'], options)
    const { stdout: gitStatusStdout } = spawnSync('git', ['status'], options)
    const version = stdout.trim()
    if (version === '' || gitStatusStdout.match('Not currently on any branch')) {
      throw new Error('No git version here')
    }
    return version
  } catch (e) {
    // Obtain version from package.json
    const { version } = require(path.join(__dirname, '../../package.json'))
    return version
  }
}