feat(actions): allow use of custom query builder function

also, don’t require fetch unless we need to in order to make project
react-native friendly

Author: evansiroky

lib/actions/api.js

@@ -1,14 +1,19 @@
+/* globals fetch */
+
 import deepEqual from 'deep-equal'
 import { createAction } from 'redux-actions'
-import fetch from 'isomorphic-fetch'
 import qs from 'qs'
 
+if (typeof (fetch) === 'undefined') {
+  require('isomorphic-fetch')
+}
+
 import { hasValidLocation } from '../util/state'
 
 export const receivedPlanResponse = createAction('PLAN_RESPONSE')
 export const requestPlanResponse = createAction('PLAN_REQUEST')
 
-export function planTrip () {
+export function planTrip (customOtpQueryBuilder) {
   return function (dispatch, getState) {
     const otpState = getState().otp
     const latest = otpState.searches.length && otpState.searches[otpState.searches.length - 1]
@@ -19,7 +24,8 @@ export function planTrip () {
     }
     if (!hasValidLocation(otpState, 'from') || !hasValidLocation(otpState, 'to')) return // TODO: replace with isQueryValid?
     dispatch(requestPlanResponse())
-    const url = constructPlanQuery(getState().otp.config.api, getState().otp.currentQuery)
+    const queryBuilderFn = customOtpQueryBuilder || constructPlanQuery
+    const url = queryBuilderFn(otpState.config.api, otpState.currentQuery)
     // setURLSearch(url)
     fetch(url)
       .then(response => {
@@ -41,24 +47,13 @@ function constructPlanQuery (api, query) {
   const planEndpoint = `${api.host}:${api.port}${api.path}/plan`
   const { mode, time, date } = query
   const params = {
+    arriveBy: query.departArrive === 'ARRIVE',
+    date,
     fromPlace: `${query.from.lat},${query.from.lon}`,
     showIntermediateStops: true,
     toPlace: `${query.to.lat},${query.to.lon}`,
-    mode
-  }
-  switch (query.departArrive) {
-    case 'ARRIVE':
-      params.arriveBy = true
-      params.date = date
-      params.time = time
-      break
-    case 'DEPART':
-      params.arriveBy = false
-      params.date = date
-      params.time = time
-      break
-    default:
-      break
+    mode,
+    time
   }
   const stringParams = qs.stringify(params)
   // TODO: set url hash based on params