feat(SW-874): Show correct rooms

components/HotelReservation/SelectRate/Rooms/utils.ts

@@ -0,0 +1,71 @@
+import { RoomConfiguration } from "@/server/routers/hotels/output"
+
+export function getLowestPricedRooms(roomConfigurations: RoomConfiguration[]) {
+  const roomTypeCount = roomConfigurations.reduce(
+    (acc, room) => {
+      acc[room.roomType] = (acc[room.roomType] || 0) + 1
+      return acc
+    },
+    {} as Record<string, number>
+  )
+
+  const duplicateRoomTypes = new Set(
+    Object.keys(roomTypeCount).filter((roomType) => roomTypeCount[roomType] > 1)
+  )
+
+  const roomMap = new Map()
+
+  roomConfigurations.forEach((room) => {
+    const { roomType, products } = room
+
+    if (!duplicateRoomTypes.has(roomType)) {
+      roomMap.set(roomType, room)
+      return
+    }
+
+    products.forEach((product) => {
+      const { productType } = product
+      const publicProduct = productType.public
+      const memberProduct = productType.member || {
+        requestedPrice: null,
+        localPrice: null,
+      }
+
+      const {
+        requestedPrice: publicRequestedPrice,
+        localPrice: publicLocalPrice,
+      } = publicProduct
+      const {
+        requestedPrice: memberRequestedPrice,
+        localPrice: memberLocalPrice,
+      } = memberProduct
+
+      const currentLowest = roomMap.get(roomType)
+
+      const currentRequestedPrice = Math.min(
+        Number(publicRequestedPrice.pricePerNight) ?? Infinity,
+        Number(memberRequestedPrice?.pricePerNight) ?? Infinity
+      )
+      const currentLocalPrice = Math.min(
+        Number(publicLocalPrice.pricePerNight) ?? Infinity,
+        Number(memberLocalPrice?.pricePerNight) ?? Infinity
+      )
+
+      if (
+        !currentLowest ||
+        currentRequestedPrice < currentLowest.requestedPrice ||
+        (currentRequestedPrice === currentLowest.requestedPrice &&
+          currentLocalPrice < currentLowest.localPrice)
+      ) {
+        roomMap.set(roomType, {
+          ...room,
+          product,
+          requestedPrice: currentRequestedPrice,
+          localPrice: currentLocalPrice,
+        })
+      }
+    })
+  })
+
+  return Array.from(roomMap.values())
+}