/* eslint-disable @typescript-eslint/default-param-last */

import { INCREMENT_COUNTER, DECREMENT_COUNTER } from './actionTypes'
import { CounterActionTypes } from './types'

const initialState = {
  value: 0,
}

export default (state = initialState, action: CounterActionTypes) => {
  switch (action.type) {
    case INCREMENT_COUNTER:
      return { ...state, value: state.value + 1 }
    case DECREMENT_COUNTER:
      return { ...state, value: state.value - 1 }
    default:
      return state
  }
}