import { Ref, ComponentPublicInstance } from 'vue-demi'
import _toPath from 'lodash.topath'
import _get from 'lodash.get'
import _set from 'lodash.set'

export { default as merge } from 'lodash.merge'
export { default as setWith } from 'lodash.setwith'

export const isUnmounted = (fieldRef: Ref) => fieldRef.value === null

export const isAllUnmounted = (fieldRefs?: Set<Ref>) => {
  if (fieldRefs === undefined) {
    return true
  }
  return [...fieldRefs].every(isUnmounted)
}

export const toPath = _toPath

export const toPathString = (path: any) => toPath(path).join('.')

export const set = _set

export const get = _get

export type FieldNode = Element | null | ComponentPublicInstance
export const getDOMNode = (value: FieldNode) => {
  if (value === null || value instanceof Element) {
    return value
  }
  return value.$el as Element
}