New function: create datastream URL

public/js/appChart.js

@@ -81,6 +81,12 @@ export const getDatastreamIdFromBuildingNumber = function (
   return datastreamIdMatched;
 };
 
+const getDatastreamUrl = function (baseUrl, datastreamID) {
+  if (!datastreamID) return;
+  const fullDatastreamURL = `${baseUrl}/Datastreams(${datastreamID})`;
+  return fullDatastreamURL;
+};
+
 /**
  * Create URL to fetch the Observations corresponding to a provided Datastream
  * @param {String} baseUrl Base URL of the STA server
@@ -89,8 +95,8 @@ export const getDatastreamIdFromBuildingNumber = function (
  */
 export const getObservationsUrl = function (baseUrl, datastreamID) {
   if (!datastreamID) return;
-  const fullDatastreamURL = `${baseUrl}/Datastreams(${datastreamID})/Observations`;
-  return fullDatastreamURL;
+  const fullObservationsURL = `${baseUrl}/Datastreams(${datastreamID})/Observations`;
+  return fullObservationsURL;
 };
 
 /**