import { useSearchParams } from "next/navigation"
import { useEffect, useMemo, useState } from "react"

import { trpc } from "@/lib/trpc/client"

import { convertSearchParamsToObj, searchParamsToRecord } from "@/utils/url"

import { RoomPackageCodeEnum } from "@/types/components/hotelReservation/selectRate/roomFilter"
import type { SelectRateSearchParams } from "@/types/components/hotelReservation/selectRate/selectRate"
import type { Lang } from "@/constants/languages"
import type { ChildrenInRoom } from "@/utils/hotelSearchDetails"

export function useRoomsAvailability(
  adultsCount: number[],
  hotelId: string,
  fromDateString: string,
  toDateString: string,
  lang: Lang,
  childArray: ChildrenInRoom,
  bookingCode?: string,
  redemption?: boolean
) {
  const searchParams = useSearchParams()
  const searchParamsObj = convertSearchParamsToObj<SelectRateSearchParams>(
    searchParamsToRecord(searchParams)
  )

  const hasPackagesParam = searchParamsObj.rooms.some((room) => room.packages)
  const [hasRoomFeatures, setHasRoomFeatures] = useState(hasPackagesParam)

  useEffect(() => {
    setHasRoomFeatures(hasPackagesParam)
  }, [hasPackagesParam, setHasRoomFeatures])

  const { data: roomFeatures, isPending: isRoomFeaturesPending } =
    trpc.hotel.availability.roomFeatures.useQuery(
      {
        hotelId,
        startDate: fromDateString,
        endDate: toDateString,
        adultsCount,
        childArray,
      },
      {
        enabled: hasRoomFeatures,
      }
    )

  const { data: roomsAvailability, isPending: isRoomsAvailabiltyPending } =
    trpc.hotel.availability.roomsCombinedAvailability.useQuery({
      adultsCount,
      bookingCode,
      childArray,
      hotelId,
      lang,
      redemption,
      roomStayEndDate: toDateString,
      roomStayStartDate: fromDateString,
    })

  const combinedData = useMemo(() => {
    if (!roomsAvailability) {
      return undefined
    }
    if (!roomFeatures) {
      return roomsAvailability
    }

    return roomsAvailability.map((room, idx) => {
      if ("error" in room) {
        return room
      }

      return {
        ...room,
        roomConfigurations: room.roomConfigurations.map((config) => ({
          ...config,
          features:
            roomFeatures?.[idx]?.find(
              (r) => r.roomTypeCode === config.roomTypeCode
            )?.features ?? [],
        })),
      }
    })
  }, [roomFeatures, roomsAvailability])

  return {
    data: combinedData,
    isPending: hasRoomFeatures
      ? isRoomsAvailabiltyPending || isRoomFeaturesPending
      : isRoomsAvailabiltyPending,
  }
}

export function useHotelPackages(
  adultArray: number[],
  childArray: ChildrenInRoom,
  fromDateString: string,
  toDateString: string,
  hotelId: string,
  lang: Lang
) {
  return trpc.hotel.packages.get.useQuery({
    adults: adultArray[0], // Using the first adult count
    children: childArray?.[0]?.length, // Using the first children count
    endDate: toDateString,
    hotelId,
    packageCodes: [
      RoomPackageCodeEnum.ACCESSIBILITY_ROOM,
      RoomPackageCodeEnum.PET_ROOM,
      RoomPackageCodeEnum.ALLERGY_ROOM,
    ],
    startDate: fromDateString,
    lang: lang,
  })
}