feat(SW-717) use of combineRoomAvailabilities in RoomsContainer

components/HotelReservation/SelectRate/utils.ts

@@ -0,0 +1,23 @@
+import type { RoomsAvailability } from "@/types/trpc/routers/hotel/roomAvailability"
+
+export function combineRoomAvailabilities({
+  availabilityResults,
+}: {
+  availabilityResults: Array<[RoomsAvailability | undefined | null, unknown]>
+}): RoomsAvailability | null {
+  return availabilityResults.reduce<RoomsAvailability | null>(
+    (combinedResult, [currentResult, error]) => {
+      if (error || !currentResult) return combinedResult
+      if (!combinedResult) return currentResult
+
+      return {
+        ...currentResult,
+        roomConfigurations: [
+          ...combinedResult.roomConfigurations,
+          ...currentResult.roomConfigurations,
+        ],
+      }
+    },
+    null
+  )
+}