just-paja/improtresk-web

import { call, select, takeEvery } from 'redux-saga/effects'

import fetchResource from '../../sagas/fetchResource'

import { yearActiveNumber } from '../../years/selectors'
import { isNeeded, reduceParams } from '../../sagas/createFetchSaga'

export default (routine, {
  payloadReducer,
  payloadSelector,
  stateSelector
} = {}) => {
  function * handleRequire () {
    const year = yield select(yearActiveNumber)
    const payload = payloadSelector ? yield select(payloadSelector) : null
    const state = stateSelector ? yield select(stateSelector) : null

    if (!state || isNeeded(state)) {
      yield call(fetchResource, routine, {
        params: {
          year,
          ...reduceParams(payloadReducer, payload)
        }
      })
    }
  }

  function * onRequire () {
    yield takeEvery(routine.TRIGGER, handleRequire)
  }

  return [onRequire]
}