Add configurable strict mode to itinerary filter

lib/actions/apiV2.js

@@ -45,7 +45,8 @@ import { RoutingQueryCallResult } from './api-constants'
 import { setItineraryView } from './ui'
 import { zoomToPlace } from './map'
 
-const { generateCombinations, generateOtp2Query } = coreUtils.queryGen
+const { generateCombinations, generateOtp2Query, SIMPLIFICATIONS } =
+  coreUtils.queryGen
 const { getTripOptionsFromQuery, getUrlParams } = coreUtils.query
 const { convertGraphQLResponseToLegacy } = coreUtils.itinerary
 const { randId } = coreUtils.storage
@@ -824,6 +825,8 @@ export function routingQuery(searchId = null, updateSearchInReducer) {
       config?.modes?.initialState?.enabledModeButtons ||
       {}
 
+    const strictModes = config?.itinerary?.strictItineraryFiltering
+
     // Filter mode definitions based on active mode keys
     const activeModeButtons = config.modes?.modeButtons.filter((mb) =>
       activeModeKeys.includes(mb.key)
@@ -920,11 +923,28 @@ export function routingQuery(searchId = null, updateSearchInReducer) {
           routingError,
           {
             rewritePayload: (response, dispatch, getState) => {
-              const withCollapsedShortNames =
-                response.data?.plan?.itineraries?.map((itin) => ({
+              const itineraries = response.data?.plan?.itineraries
+              const activeModeStrings = activeModes.map(
+                (am) => SIMPLIFICATIONS[am.mode]
+              )
+              let filteredItineraries
+
+              if (strictModes) {
+                filteredItineraries = itineraries.filter((itin) =>
+                  itin.legs.some((leg) =>
+                    activeModeStrings.includes(SIMPLIFICATIONS[leg.mode])
+                  )
+                )
+              } else {
+                filteredItineraries = itineraries
+              }
+
+              const withCollapsedShortNames = filteredItineraries.map(
+                (itin) => ({
                   ...itin,
                   legs: itin.legs?.map(convertGraphQLResponseToLegacy)
-                }))
+                })
+              )
 
               /* It is possible for a NO_TRANSIT_CONNECTION error to be
                 returned even if trips were returned, since it is on a mode-by-mode basis.