103 lines
2.9 KiB
TypeScript
103 lines
2.9 KiB
TypeScript
import { RoomConfiguration } from "@/server/routers/hotels/output"
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/**
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* Get the lowest priced room for each room type that appears more than once.
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*/
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export function filterDuplicateRoomTypesByLowestPrice(
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roomConfigurations: RoomConfiguration[]
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) {
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const roomTypeCount = roomConfigurations.reduce(
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(acc, room) => {
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acc[room.roomType] = (acc[room.roomType] || 0) + 1
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return acc
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},
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{} as Record<string, number>
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)
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const duplicateRoomTypes = new Set(
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Object.keys(roomTypeCount).filter((roomType) => roomTypeCount[roomType] > 1)
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)
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const roomMap = new Map()
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roomConfigurations.forEach((room) => {
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const { roomType, products } = room
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if (!duplicateRoomTypes.has(roomType)) {
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roomMap.set(roomType, room)
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return
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}
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products.forEach((product) => {
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const { productType } = product
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const publicProduct = productType.public
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const memberProduct = productType.member || {
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requestedPrice: null,
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localPrice: null,
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}
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const {
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requestedPrice: publicRequestedPrice,
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localPrice: publicLocalPrice,
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} = publicProduct
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const {
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requestedPrice: memberRequestedPrice,
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localPrice: memberLocalPrice,
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} = memberProduct
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const previousLowest = roomMap.get(roomType)
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const currentRequestedPrice = Math.min(
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Number(publicRequestedPrice.pricePerNight) ?? Infinity,
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Number(memberRequestedPrice?.pricePerNight) ?? Infinity
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)
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const currentLocalPrice = Math.min(
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Number(publicLocalPrice.pricePerNight) ?? Infinity,
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Number(memberLocalPrice?.pricePerNight) ?? Infinity
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)
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if (
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!previousLowest ||
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currentRequestedPrice <
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Math.min(
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Number(
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previousLowest.products[0].productType.public.requestedPrice
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.pricePerNight
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) ?? Infinity,
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Number(
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previousLowest.products[0].productType.member?.requestedPrice
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?.pricePerNight
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) ?? Infinity
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) ||
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(currentRequestedPrice ===
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Math.min(
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Number(
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previousLowest.products[0].productType.public.requestedPrice
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.pricePerNight
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) ?? Infinity,
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Number(
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previousLowest.products[0].productType.member?.requestedPrice
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?.pricePerNight
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) ?? Infinity
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) &&
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currentLocalPrice <
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Math.min(
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Number(
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previousLowest.products[0].productType.public.localPrice
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.pricePerNight
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) ?? Infinity,
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Number(
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previousLowest.products[0].productType.member?.localPrice
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?.pricePerNight
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) ?? Infinity
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))
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) {
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roomMap.set(roomType, room)
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}
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})
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})
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return Array.from(roomMap.values())
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}
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