import type { Config } from '../createConfig.js'

export type WatchStatusParameters = {
  onChange(
    status: Config['state']['status'],
    prevStatus: Config['state']['status'],
  ): void
}

export type WatchStatusReturnType = () => void

export function watchStatus(
  config: Config,
  parameters: WatchStatusParameters,
): WatchStatusReturnType {
  const { onChange } = parameters

  return config.subscribe((state) => state.status, onChange)
}