Feat/SW-2271 hotel list filtering

* feat(SW-2271): Changes to hotel data types in preperation for filtering
* feat(SW-2271): Added filter and sort functionality

Approved-by: Matilda Landström

apps/scandic-web/stores/hotel-listing-data/helper.ts

@@ -0,0 +1,64 @@
+import {
+  type HotelListingHotelData,
+  type HotelSortItem,
+  HotelSortOption,
+} from "@scandic-hotels/trpc/types/hotel"
+
+const HOTEL_SORTING_STRATEGIES: Partial<
+  Record<
+    HotelSortOption,
+    (a: HotelListingHotelData, b: HotelListingHotelData) => number
+  >
+> = {
+  [HotelSortOption.Name]: function (a, b) {
+    return a.hotel.name.localeCompare(b.hotel.name)
+  },
+  [HotelSortOption.TripAdvisorRating]: function (a, b) {
+    return (b.hotel.tripadvisor ?? 0) - (a.hotel.tripadvisor ?? 0)
+  },
+}
+
+export function getFilteredHotels(
+  hotels: HotelListingHotelData[],
+  filters: string[]
+) {
+  if (filters.length) {
+    return hotels.filter(({ hotel }) =>
+      filters.every((filter) => {
+        const matchesFacility = hotel.detailedFacilities.some(
+          (facility) => facility.slug === filter
+        )
+        const matchesCountry =
+          hotel.countryCode.toLowerCase() === filter.toLowerCase()
+        return matchesFacility || matchesCountry
+      })
+    )
+  }
+  return hotels
+}
+
+export function getSortedHotels(
+  hotels: HotelListingHotelData[],
+  sortOption: HotelSortOption
+) {
+  const sortFn = HOTEL_SORTING_STRATEGIES[sortOption]
+  return sortFn ? [...hotels].sort(sortFn) : hotels
+}
+
+export function isValidSortOption(
+  value: string,
+  sortItems: HotelSortItem[]
+): value is HotelSortOption {
+  return sortItems.map((item) => item.value).includes(value as HotelSortOption)
+}
+
+export function getBasePathNameWithoutFilters(
+  pathname: string,
+  filterSlugs: string[]
+) {
+  const pathSegments = pathname.split("/")
+  const filteredSegments = pathSegments.filter(
+    (segment) => !filterSlugs.includes(segment)
+  )
+  return filteredSegments.join("/")
+}