// Separated out for easier unit testing
module.exports = (process) => {
  process.title = 'npm'

  const {
    checkForBrokenNode,
    checkForUnsupportedNode
  } = require('../lib/utils/unsupported.js')

  checkForBrokenNode()

  const log = require('npmlog')
  // pause it here so it can unpause when we've loaded the configs
  // and know what loglevel we should be printing.
  log.pause()

  checkForUnsupportedNode()

  const npm = require('../lib/npm.js')
  const { defs: { shorthands, types } } = require('../lib/config/core.js')
  const errorHandler = require('../lib/utils/error-handler.js')
  const nopt = require('nopt')

  // if npm is called as "npmg" or "npm_g", then
  // run in global mode.
  if (process.argv[1][process.argv[1].length - 1] === 'g') {
    process.argv.splice(1, 1, 'npm', '-g')
  }

  log.verbose('cli', process.argv)

  const conf = nopt(types, shorthands, process.argv)
  npm.argv = conf.argv.remain

  if (conf.version) {
    console.log(npm.version)
    return errorHandler.exit(0)
  }

  if (conf.versions) {
    npm.argv = ['version']
    conf.usage = false
  }

  log.info('using', 'npm@%s', npm.version)
  log.info('using', 'node@%s', process.version)

  process.on('uncaughtException', errorHandler)
  process.on('unhandledRejection', errorHandler)

  // now actually fire up npm and run the command.
  // this is how to use npm programmatically:
  conf._exit = true
  const updateNotifier = require('../lib/utils/update-notifier.js')
  npm.load(conf, async er => {
    if (er) return errorHandler(er)

    npm.updateNotification = await updateNotifier(npm)

    const cmd = npm.argv.shift()
    const impl = npm.commands[cmd]
    if (impl) {
      impl(npm.argv, errorHandler)
    } else {
      npm.config.set('usage', false)
      npm.argv.unshift(cmd)
      npm.commands.help(npm.argv, errorHandler)
    }
  })
}
