Fix failure if NRCC messages are not present on StaffLDB

Signed-off-by: Fred Boniface <fred@fjla.uk>

src/services/ldb.services.js

@@ -67,6 +67,7 @@ async function arrDepBoardStaff(CRS) {
     const api = new ldb(ldbsvKey,true);
     console.time(`Fetch Staff LDB for ${CRS.toUpperCase()}`);
     const result = await api.call('GetArrivalDepartureBoardByCRS',options,false,false);
+    console.log(`Upstream API Size: ${resultSize}`)
     console.timeEnd(`Fetch Staff LDB for ${CRS.toUpperCase()}`)
     try {
       const _staffLdb = staffStationTransform(result)

src/utils/translators/ldb/staffStation.ts

@@ -22,6 +22,7 @@ export function transform(input: any): StaffLdb | null {
     console.timeEnd("StaffLdb Transformation")
     return output
   } catch (err) {
+    console.log("utils/translators/ldb/staffLdb.transform: Caught Error")
     console.log('Unable to parse data, assuming no data: ' + err)
   }
   console.timeEnd("StaffLdb Transformation")
@@ -32,20 +33,23 @@ function transformDateTime(input: string): Date {
   return new Date(input)
 }
 
-function transformNrcc(input: any): NrccMessage[] {
+function transformNrcc(input: any): NrccMessage[] | undefined {
   let output: NrccMessage[] = []
   let messages = input
   if (!Array.isArray(input?.message)) {
     messages = [input?.message]
   }
-  for (const item of messages) {
-    let message: NrccMessage = {
-      severity: item?.severity,
-      xhtmlMessage: removeNewlineAndPTag(item?.xhtmlMessage)
+  if (messages.length) {
+    for (const item of messages) {
+      let message: NrccMessage = {
+        severity: item?.severity,
+        xhtmlMessage: removeNewlineAndPTag(item?.xhtmlMessage)
+      }
+      output.push(message)
     }
-    output.push(message)
-  }
-  return output
+    return output
+  } 
+  return undefined
 }
 
 function transformTrainServices(input: any): TrainServices[] {
@@ -95,8 +99,7 @@ function transformLocation(input: any): ServiceLocation[] {
   }
   for (const item of locations) {
     const location: ServiceLocation = {
-      tiploc: item?.tiploc,
-      name: item?.locationName
+      tiploc: item?.tiploc
     }
     if (item?.via) {
       location.via = item.via