just-paja/improtresk-web

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

import { getApiAuth, getApiSource } from '../selectors'

const shouldParseBody = response => (
  response &&
  response.status >= 200 &&
  response.status !== 204 &&
  response.status !== 404
)

function * getFetchResultAction (routine, response, actionData) {
  let responseBody = null
  if (response && response.status === 404) {
    return routine.failure({ missing: true }, actionData)
  }

  if (shouldParseBody(response)) {
    try {
      responseBody = yield response.json()
    } catch (parseError) {
      return routine.failure(parseError, actionData)
    }
  }

  if (!response.ok) {
    return routine.failure(responseBody, actionData)
  }

  return routine.success(responseBody, actionData)
}

export default function * fetchResource (routine, {
  actionData,
  params
}) {
  const apiSource = yield select(getApiSource)
  const auth = yield select(getApiAuth)
  try {
    yield put(routine.request(null, actionData))
    const response = yield call(routine.resource, {
      ...params,
      apiSource,
      auth
    })
    yield put(yield call(getFetchResultAction, routine, response, actionData))
  } catch (error) {
    yield put(routine.failure(error, actionData))
  } finally {
    yield put(routine.fulfill({
      cancelled: yield cancelled()
    }, actionData))
  }
}