import execa from 'execa'

import log from '@/helpers/log'
import os from '@/helpers/os'

/**
 * Check OS environment
 */
export default () => new Promise(async (resolve, reject) => {
  log.info('Checking OS environment...')

  const info = os.get()

  if (info.type === 'windows') {
    log.error('Voice offline mode is not available on Windows')
    reject()
  } else if (info.type === 'unknown') {
    log.error('This OS is unknown, please open an issue to let us know about it')
    reject()
  } else {
    try {
      log.success(`You are running ${info.name}`)
      log.info('Checking tools...')

      await execa('tar', ['--version'])
      log.success('"tar" found')
      await execa('make', ['--version'])
      log.success('"make" found')

      if (info.type === 'macos') {
        await execa('brew', ['--version'])
        log.success('"brew" found')
        await execa('curl', ['--version'])
        log.success('"curl" found')
      } else if (info.type === 'linux') {
        await execa('apt-get', ['--version'])
        log.success('"apt-get" found')
        await execa('wget', ['--version'])
        log.success('"wget" found')
      }

      resolve()
    } catch (e) {
      if (e.cmd) {
        const cmd = e.cmd.substr(0, e.cmd.indexOf(' '))
        log.error(`The following command has failed: "${e.cmd}". "${cmd}" is maybe missing. To continue this setup, please install the required tool. More details about the failure: ${e}`)
      } else {
        log.error(`Failed to prepare the environment: ${e}`)
      }

      reject(e)
    }
  }
})