export const UNKNOWN = 'UNKNOWN'

export interface UserConfig {
  userAgent: string
  hostname: string

  // Optional for user request
  locale?: string
  userId?: string
  ip?: string

  // Generated if doesnt exist
  deviceId?: string
  sessionStamp?: number
  visitorId?: string

  // Optional devices/os informations.
  osVersion?: string
  osName?: string
  deviceBrand?: string
  deviceModel?: string
}

export interface Storage {
  get: (key) => number | string
  set: (key, value, options) => void
}

export interface TracktorConfig {
  appName: string
  sendUrl: string
  emit_frequency?: number
  event_max_count?: number
  event_max_size?: number
  request_max_size?: number
  retries_frequency?: number
  retries_max?: number
  onSendFailure?: (Error) => void
}

export interface Event {
  name: string
  version: number
  payload: object
  created_at_client_local: string
}