import DeviceId from './types/DeviceId'
import RandomIntGenerator from './RandomIntGenerator'

const makeUuidv4 = () => {
  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, c => {
    const r = (Math.random() * 16) | 0
    const v = c === 'x' ? r : (r & 0x3) | 0x8
    return v.toString(16)
  })
}

export default () => {
  const uuid = makeUuidv4()
  const deviceId = uuid
  const clientId = uuid.substring(0, 19)
  const mqttId = RandomIntGenerator.generate()
  return { clientId, deviceId, mqttId } as DeviceId
}