update params sent to rail router

Author: josh-willis-arcadis

lib/scenario-editor/utils/valhalla.js

@@ -261,7 +261,12 @@ export function routeWithGraphHopper (
     key: graphHopperKey,
     vehicle: 'car',
     debug: true,
-    type: 'json'
+    type: 'json',
+    profile: ''
+  }
+  if (snapToOption === 'RAIL') {
+    delete params.vehicle // vehicle is not supported in current open rail router version
+    params.profile = 'all_tracks' // this can be changed to return better results if needed
   }
   const locations = points.map(p => (`point=${p.lat},${p.lng}`)).join('&')
   // Avoiding motorways requires a POST request with a formatted body