just-paja/improtresk-web

import { change, getFormValues } from 'redux-form'
import { put, select, takeEvery } from 'redux-saga/effects'

import { orderChange } from '../actions'
import { getWorkshopList } from '../../workshops/selectors'
import { redirectHome } from '../../sagas/redirects'
import { getActiveOrder } from '../selectors'

import * as years from '../../years/constants'

function * onOrderHomeRedirect () {
  yield takeEvery(orderChange.SUCCESS, redirectHome)
}

export function * interceptInvalidWorkshopChange () {
  const form = yield select(getFormValues, orderChange.form)
  const order = yield select(getActiveOrder)
  const workshops = yield select(getWorkshopList)
  const selectedWorkshop = workshops.find(workshop => workshop.id === form.workshop)

  if (order && order.workshop) {
    if (
      !selectedWorkshop ||
      (
        form.workshop &&
        order.workshop.id !== form.workshop &&
        selectedWorkshop.capacityStatus.freeSpots === 0
      )
    ) {
      yield put(change(orderChange.form, 'workshop', null))
    }
  }
}

export function * onInterceptInvalidWorkshopChange () {
  yield takeEvery(
    years.YEAR_CAPACITY_FETCH_SUCCESS,
    interceptInvalidWorkshopChange
  )
}

export default [
  onInterceptInvalidWorkshopChange,
  onOrderHomeRedirect
]