import { unstable_cache } from "next/cache"

import { ApiLang } from "@/constants/languages"
import { env } from "@/env/server"
import * as api from "@/lib/api"
import { dt } from "@/lib/dt"
import { badRequestError } from "@/server/errors/trpc"
import {
  contentStackBaseWithServiceProcedure,
  publicProcedure,
  router,
  safeProtectedServiceProcedure,
  serviceProcedure,
} from "@/server/trpc"
import { toApiLang } from "@/server/utils"

import { cache } from "@/utils/cache"

import { getHotelPageUrl } from "../contentstack/hotelPage/utils"
import { getVerifiedUser, parsedUser } from "../user/query"
import { additionalDataSchema } from "./schemas/additionalData"
import { meetingRoomsSchema } from "./schemas/meetingRoom"
import {
  breakfastPackageInputSchema,
  cityCoordinatesInputSchema,
  getAdditionalDataInputSchema,
  getHotelsByCityIdentifierInput,
  getHotelsByCountryInput,
  getHotelsByCSFilterInput,
  getHotelsByHotelIdsAvailabilityInputSchema,
  getMeetingRoomsInputSchema,
  hotelInputSchema,
  hotelsAvailabilityInputSchema,
  nearbyHotelIdsInput,
  ratesInputSchema,
  roomPackagesInputSchema,
  roomsAvailabilityInputSchema,
  selectedRoomAvailabilityInputSchema,
} from "./input"
import { metrics } from "./metrics"
import {
  breakfastPackagesSchema,
  getNearbyHotelIdsSchema,
  hotelsAvailabilitySchema,
  hotelSchema,
  packagesSchema,
  ratesSchema,
  roomsAvailabilitySchema,
} from "./output"
import tempRatesData from "./tempRatesData.json"
import {
  getCitiesByCountry,
  getCountries,
  getHotelIdsByCityId,
  getHotelIdsByCityIdentifier,
  getHotelIdsByCountry,
  getHotelsByHotelIds,
  getLocations,
} from "./utils"

import type { BedTypeSelection } from "@/types/components/hotelReservation/enterDetails/bedType"
import { AvailabilityEnum } from "@/types/components/hotelReservation/selectHotel/selectHotel"
import { BreakfastPackageEnum } from "@/types/enums/breakfast"
import { HotelTypeEnum } from "@/types/enums/hotelType"
import type { RequestOptionsWithOutBody } from "@/types/fetch"
import type { HotelDataWithUrl } from "@/types/hotel"
import type {
  HotelsAvailabilityInputSchema,
  HotelsByHotelIdsAvailabilityInputSchema,
} from "@/types/trpc/routers/hotel/availability"
import type { HotelInput } from "@/types/trpc/routers/hotel/hotel"
import type { CityLocation } from "@/types/trpc/routers/hotel/locations"

export const getHotel = cache(
  async (input: HotelInput, serviceToken: string) => {
    const callable = unstable_cache(
      async function (
        hotelId: HotelInput["hotelId"],
        language: HotelInput["language"],
        isCardOnlyPayment?: HotelInput["isCardOnlyPayment"]
      ) {
        /**
         * Since API expects the params appended and not just
         * a comma separated string we need to initialize the
         * SearchParams with a sequence of pairs
         * (include=City&include=NearbyHotels&include=Restaurants etc.)
         **/
        const params = new URLSearchParams([
          ["include", "AdditionalData"],
          ["include", "City"],
          ["include", "NearbyHotels"],
          ["include", "Restaurants"],
          ["include", "RoomCategories"],
          ["language", toApiLang(language)],
        ])
        metrics.hotel.counter.add(1, {
          hotelId,
          language,
        })
        console.info(
          "api.hotels.hotelData start",
          JSON.stringify({ query: { hotelId, params: params.toString() } })
        )

        const apiResponse = await api.get(
          api.endpoints.v1.Hotel.Hotels.hotel(hotelId),
          {
            headers: {
              Authorization: `Bearer ${serviceToken}`,
            },
            // needs to clear default option as only
            // cache or next.revalidate is permitted
            cache: undefined,
            next: {
              revalidate: env.CACHE_TIME_HOTELS,
              tags: [`${language}:hotel:${hotelId}`],
            },
          },
          params
        )

        if (!apiResponse.ok) {
          const text = await apiResponse.text()
          metrics.hotel.fail.add(1, {
            hotelId,
            language,
            error_type: "http_error",
            error: JSON.stringify({
              status: apiResponse.status,
              statusText: apiResponse.statusText,
              text,
            }),
          })
          console.error(
            "api.hotels.hotelData error",
            JSON.stringify({
              query: { hotelId, params: params.toString() },
              error: {
                status: apiResponse.status,
                statusText: apiResponse.statusText,
                text,
              },
            })
          )
          return null
        }

        const apiJson = await apiResponse.json()
        const validateHotelData = hotelSchema.safeParse(apiJson)

        if (!validateHotelData.success) {
          metrics.hotel.fail.add(1, {
            hotelId,
            language,
            error_type: "validation_error",
            error: JSON.stringify(validateHotelData.error),
          })

          console.error(
            "api.hotels.hotelData validation error",
            JSON.stringify({
              query: { hotelId, params: params.toString() },
              error: validateHotelData.error,
            })
          )
          throw badRequestError()
        }

        metrics.hotel.success.add(1, {
          hotelId,
          language,
        })
        console.info(
          "api.hotels.hotelData success",
          JSON.stringify({
            query: { hotelId, params: params.toString() },
          })
        )
        const hotelData = validateHotelData.data

        if (isCardOnlyPayment) {
          hotelData.hotel.merchantInformationData.alternatePaymentOptions = []
        }

        const gallery = hotelData.additionalData?.gallery
        if (gallery) {
          const smallerImages = gallery.smallerImages
          const hotelGalleryImages =
            hotelData.hotel.hotelType === HotelTypeEnum.Signature
              ? smallerImages.slice(0, 10)
              : smallerImages.slice(0, 6)
          hotelData.hotel.galleryImages = hotelGalleryImages
        }

        return hotelData
      },
      [`${input.language}:hotel:${input.hotelId}:${!!input.isCardOnlyPayment}`],
      {
        revalidate: env.CACHE_TIME_HOTELS,
        tags: [
          `${input.language}:hotel:${input.hotelId}:${!!input.isCardOnlyPayment}`,
        ],
      }
    )

    return callable(input.hotelId, input.language, input.isCardOnlyPayment)
  }
)

export const getHotelsAvailabilityByCity = async (
  input: HotelsAvailabilityInputSchema,
  apiLang: string,
  serviceToken: string
) => {
  const {
    cityId,
    roomStayStartDate,
    roomStayEndDate,
    adults,
    children,
    bookingCode,
  } = input

  const params: Record<string, string | number> = {
    roomStayStartDate,
    roomStayEndDate,
    adults,
    ...(children && { children }),
    ...(bookingCode && { bookingCode }),
    language: apiLang,
  }
  metrics.hotelsAvailability.counter.add(1, {
    cityId,
    roomStayStartDate,
    roomStayEndDate,
    adults,
    children,
    bookingCode,
  })
  console.info(
    "api.hotels.hotelsAvailability start",
    JSON.stringify({ query: { cityId, params } })
  )
  const apiResponse = await api.get(
    api.endpoints.v1.Availability.city(cityId),
    {
      cache: undefined,
      headers: {
        Authorization: `Bearer ${serviceToken}`,
      },
      next: {
        revalidate: env.CACHE_TIME_CITY_SEARCH,
      },
    },
    params
  )
  if (!apiResponse.ok) {
    const text = await apiResponse.text()
    metrics.hotelsAvailability.fail.add(1, {
      cityId,
      roomStayStartDate,
      roomStayEndDate,
      adults,
      children,
      bookingCode,
      error_type: "http_error",
      error: JSON.stringify({
        status: apiResponse.status,
        statusText: apiResponse.statusText,
        text,
      }),
    })
    console.error(
      "api.hotels.hotelsAvailability error",
      JSON.stringify({
        query: { cityId, params },
        error: {
          status: apiResponse.status,
          statusText: apiResponse.statusText,
          text,
        },
      })
    )
    return null
  }
  const apiJson = await apiResponse.json()
  const validateAvailabilityData = hotelsAvailabilitySchema.safeParse(apiJson)
  if (!validateAvailabilityData.success) {
    metrics.hotelsAvailability.fail.add(1, {
      cityId,
      roomStayStartDate,
      roomStayEndDate,
      adults,
      children,
      bookingCode,
      error_type: "validation_error",
      error: JSON.stringify(validateAvailabilityData.error),
    })
    console.error(
      "api.hotels.hotelsAvailability validation error",
      JSON.stringify({
        query: { cityId, params },
        error: validateAvailabilityData.error,
      })
    )
    throw badRequestError()
  }
  metrics.hotelsAvailability.success.add(1, {
    cityId,
    roomStayStartDate,
    roomStayEndDate,
    adults,
    children,
    bookingCode,
  })
  console.info(
    "api.hotels.hotelsAvailability success",
    JSON.stringify({
      query: { cityId, params: params },
    })
  )
  return {
    availability: validateAvailabilityData.data.data.flatMap(
      (hotels) => hotels.attributes
    ),
  }
}

export const getHotelsAvailabilityByHotelIds = async (
  input: HotelsByHotelIdsAvailabilityInputSchema,
  apiLang: string,
  serviceToken: string
) => {
  const {
    hotelIds,
    roomStayStartDate,
    roomStayEndDate,
    adults,
    children,
    bookingCode,
  } = input

  /**
   * Since API expects the params appended and not just
   * a comma separated string we need to initialize the
   * SearchParams with a sequence of pairs
   * (hotelIds=810&hotelIds=879&hotelIds=222 etc.)
   **/
  const params = new URLSearchParams([
    ["roomStayStartDate", roomStayStartDate],
    ["roomStayEndDate", roomStayEndDate],
    ["adults", adults.toString()],
    ["children", children ?? ""],
    ["bookingCode", bookingCode],
    ["language", apiLang],
  ])
  hotelIds.forEach((hotelId) => params.append("hotelIds", hotelId.toString()))
  metrics.hotelsByHotelIdAvailability.counter.add(1, {
    hotelIds,
    roomStayStartDate,
    roomStayEndDate,
    adults,
    children,
    bookingCode,
  })
  console.info(
    "api.hotels.hotelsByHotelIdAvailability start",
    JSON.stringify({ query: { params } })
  )
  const apiResponse = await api.get(
    api.endpoints.v1.Availability.hotels(),
    {
      cache: undefined,
      headers: {
        Authorization: `Bearer ${serviceToken}`,
      },
      next: {
        revalidate: env.CACHE_TIME_CITY_SEARCH,
      },
    },
    params
  )
  if (!apiResponse.ok) {
    const text = await apiResponse.text()
    metrics.hotelsByHotelIdAvailability.fail.add(1, {
      hotelIds,
      roomStayStartDate,
      roomStayEndDate,
      adults,
      children,
      bookingCode,
      error_type: "http_error",
      error: JSON.stringify({
        status: apiResponse.status,
        statusText: apiResponse.statusText,
        text,
      }),
    })
    console.error(
      "api.hotels.hotelsByHotelIdAvailability error",
      JSON.stringify({
        query: { params },
        error: {
          status: apiResponse.status,
          statusText: apiResponse.statusText,
          text,
        },
      })
    )
    return null
  }
  const apiJson = await apiResponse.json()
  const validateAvailabilityData = hotelsAvailabilitySchema.safeParse(apiJson)
  if (!validateAvailabilityData.success) {
    metrics.hotelsByHotelIdAvailability.fail.add(1, {
      hotelIds,
      roomStayStartDate,
      roomStayEndDate,
      adults,
      children,
      bookingCode,
      error_type: "validation_error",
      error: JSON.stringify(validateAvailabilityData.error),
    })
    console.error(
      "api.hotels.hotelsByHotelIdAvailability validation error",
      JSON.stringify({
        query: { params },
        error: validateAvailabilityData.error,
      })
    )
    throw badRequestError()
  }
  metrics.hotelsByHotelIdAvailability.success.add(1, {
    hotelIds,
    roomStayStartDate,
    roomStayEndDate,
    adults,
    children,
    bookingCode,
  })
  console.info(
    "api.hotels.hotelsByHotelIdAvailability success",
    JSON.stringify({
      query: { params },
    })
  )
  return {
    availability: validateAvailabilityData.data.data.flatMap(
      (hotels) => hotels.attributes
    ),
  }
}

export const hotelQueryRouter = router({
  availability: router({
    hotelsByCity: serviceProcedure
      .input(hotelsAvailabilityInputSchema)
      .query(async ({ input, ctx }) => {
        const { lang } = ctx
        const apiLang = toApiLang(lang)
        return getHotelsAvailabilityByCity(input, apiLang, ctx.serviceToken)
      }),
    hotelsByHotelIds: serviceProcedure
      .input(getHotelsByHotelIdsAvailabilityInputSchema)
      .query(async ({ input, ctx }) => {
        const { lang } = ctx
        const apiLang = toApiLang(lang)
        return getHotelsAvailabilityByHotelIds(input, apiLang, ctx.serviceToken)
      }),
    rooms: serviceProcedure
      .input(roomsAvailabilityInputSchema)
      .query(async ({ input, ctx }) => {
        const { lang } = ctx
        const apiLang = toApiLang(lang)
        const {
          hotelId,
          roomStayStartDate,
          roomStayEndDate,
          adults,
          children,
          bookingCode,
          rateCode,
        } = input

        const params: Record<string, string | number | undefined> = {
          roomStayStartDate,
          roomStayEndDate,
          adults,
          ...(children && { children }),
          ...(bookingCode && { bookingCode }),
          language: apiLang,
        }

        metrics.roomAvailability.counter.add(1, {
          hotelId,
          roomStayStartDate,
          roomStayEndDate,
          adults,
          children,
          bookingCode,
        })
        console.info(
          "api.hotels.roomsAvailability start",
          JSON.stringify({ query: { hotelId, params } })
        )
        const apiResponse = await api.get(
          api.endpoints.v1.Availability.hotel(hotelId.toString()),
          {
            headers: {
              Authorization: `Bearer ${ctx.serviceToken}`,
            },
          },
          params
        )

        if (!apiResponse.ok) {
          const text = await apiResponse.text()
          metrics.roomAvailability.fail.add(1, {
            hotelId,
            roomStayStartDate,
            roomStayEndDate,
            adults,
            children,
            bookingCode,
            error_type: "http_error",
            error: JSON.stringify({
              status: apiResponse.status,
              statusText: apiResponse.statusText,
              text,
            }),
          })
          console.error(
            "api.hotels.roomsAvailability error",
            JSON.stringify({
              query: { hotelId, params },
              error: {
                status: apiResponse.status,
                statusText: apiResponse.statusText,
                text,
              },
            })
          )
          return null
        }
        const apiJson = await apiResponse.json()

        const validateAvailabilityData =
          roomsAvailabilitySchema.safeParse(apiJson)
        if (!validateAvailabilityData.success) {
          metrics.roomAvailability.fail.add(1, {
            hotelId,
            roomStayStartDate,
            roomStayEndDate,
            adults,
            children,
            bookingCode,
            error_type: "validation_error",
            error: JSON.stringify(validateAvailabilityData.error),
          })
          console.error(
            "api.hotels.roomsAvailability validation error",
            JSON.stringify({
              query: { hotelId, params },
              error: validateAvailabilityData.error,
            })
          )
          return null
        }
        metrics.roomAvailability.success.add(1, {
          hotelId,
          roomStayStartDate,
          roomStayEndDate,
          adults,
          children,
          bookingCode,
        })
        console.info(
          "api.hotels.roomsAvailability success",
          JSON.stringify({
            query: { hotelId, params: params },
          })
        )

        if (rateCode) {
          validateAvailabilityData.data.mustBeGuaranteed =
            validateAvailabilityData.data.rateDefinitions.filter(
              (rate) => rate.rateCode === rateCode
            )[0].mustBeGuaranteed
        }

        return validateAvailabilityData.data
      }),
    room: serviceProcedure
      .input(selectedRoomAvailabilityInputSchema)
      .query(async ({ input, ctx }) => {
        const {
          hotelId,
          roomStayStartDate,
          roomStayEndDate,
          adults,
          children,
          bookingCode,
          rateCode,
          roomTypeCode,
          packageCodes,
        } = input

        const params: Record<string, string | number | undefined> = {
          roomStayStartDate,
          roomStayEndDate,
          adults,
          ...(children && { children }),
          ...(bookingCode && { bookingCode }),
          language: toApiLang(ctx.lang),
        }

        metrics.selectedRoomAvailability.counter.add(1, {
          hotelId,
          roomStayStartDate,
          roomStayEndDate,
          adults,
          children,
          bookingCode,
        })
        console.info(
          "api.hotels.selectedRoomAvailability start",
          JSON.stringify({ query: { hotelId, params } })
        )
        const apiResponseAvailability = await api.get(
          api.endpoints.v1.Availability.hotel(hotelId.toString()),
          {
            headers: {
              Authorization: `Bearer ${ctx.serviceToken}`,
            },
          },
          params
        )

        if (!apiResponseAvailability.ok) {
          const text = await apiResponseAvailability.text()
          metrics.selectedRoomAvailability.fail.add(1, {
            hotelId,
            roomStayStartDate,
            roomStayEndDate,
            adults,
            children,
            bookingCode,
            error_type: "http_error",
            error: JSON.stringify({
              status: apiResponseAvailability.status,
              statusText: apiResponseAvailability.statusText,
              text,
            }),
          })
          console.error(
            "api.hotels.selectedRoomAvailability error",
            JSON.stringify({
              query: { hotelId, params },
              error: {
                status: apiResponseAvailability.status,
                statusText: apiResponseAvailability.statusText,
                text,
              },
            })
          )
          return null
        }
        const apiJsonAvailability = await apiResponseAvailability.json()
        const validateAvailabilityData =
          roomsAvailabilitySchema.safeParse(apiJsonAvailability)
        if (!validateAvailabilityData.success) {
          metrics.selectedRoomAvailability.fail.add(1, {
            hotelId,
            roomStayStartDate,
            roomStayEndDate,
            adults,
            children,
            bookingCode,
            error_type: "validation_error",
            error: JSON.stringify(validateAvailabilityData.error),
          })
          console.error(
            "api.hotels.selectedRoomAvailability validation error",
            JSON.stringify({
              query: { hotelId, params },
              error: validateAvailabilityData.error,
            })
          )
          throw badRequestError()
        }

        const hotelData = await getHotel(
          {
            hotelId,
            isCardOnlyPayment: false,
            language: ctx.lang,
          },
          ctx.serviceToken
        )

        const availableRooms =
          validateAvailabilityData.data.roomConfigurations.filter((room) => {
            if (packageCodes) {
              return (
                room.status === AvailabilityEnum.Available &&
                room.features.some(
                  (feature) =>
                    packageCodes.includes(feature.code) && feature.inventory > 0
                )
              )
            }
            return room.status === AvailabilityEnum.Available
          })

        const selectedRoom = availableRooms.find(
          (room) => room.roomTypeCode === roomTypeCode
        )

        const availableRoomsInCategory = availableRooms.filter(
          (room) => room.roomType === selectedRoom?.roomType
        )
        if (!selectedRoom) {
          metrics.selectedRoomAvailability.fail.add(1, {
            hotelId,
            roomStayStartDate,
            roomStayEndDate,
            adults,
            children,
            bookingCode,
            error_type: "not_found",
            error: `Couldn't find selected room with input: ${roomTypeCode}`,
          })
          console.error("No matching room found")
          return null
        }

        const rateTypes = selectedRoom.products.find(
          (rate) =>
            rate.productType.public?.rateCode === rateCode ||
            rate.productType.member?.rateCode === rateCode
        )

        if (!rateTypes) {
          metrics.selectedRoomAvailability.fail.add(1, {
            hotelId,
            roomStayStartDate,
            roomStayEndDate,
            adults,
            children,
            bookingCode,
            error_type: "not_found",
            error: `Couldn't find rateTypes for selected room: ${JSON.stringify(selectedRoom)}`,
          })
          console.error("No matching rate found")
          return null
        }
        const rates = rateTypes.productType

        const rateDefinition =
          validateAvailabilityData.data.rateDefinitions.find(
            (rate) => rate.rateCode === rateCode
          )

        const bedTypes = availableRoomsInCategory
          .map((availRoom) => {
            const matchingRoom = hotelData?.roomCategories
              ?.find((room) =>
                room.roomTypes
                  .map((roomType) => roomType.code)
                  .includes(availRoom.roomTypeCode)
              )
              ?.roomTypes.find(
                (roomType) => roomType.code === availRoom.roomTypeCode
              )

            if (matchingRoom) {
              return {
                description: matchingRoom.description,
                size: matchingRoom.mainBed.widthRange,
                value: matchingRoom.code,
                type: matchingRoom.mainBed.type,
                extraBed: matchingRoom.fixedExtraBed
                  ? {
                      type: matchingRoom.fixedExtraBed.type,
                      description: matchingRoom.fixedExtraBed.description,
                    }
                  : undefined,
              }
            }
          })
          .filter((bed): bed is BedTypeSelection => Boolean(bed))

        metrics.selectedRoomAvailability.success.add(1, {
          hotelId,
          roomStayStartDate,
          roomStayEndDate,
          adults,
          children,
          bookingCode,
        })
        console.info(
          "api.hotels.selectedRoomAvailability success",
          JSON.stringify({
            query: { hotelId, params: params },
          })
        )

        return {
          selectedRoom,
          rateDetails: rateDefinition?.generalTerms,
          cancellationText: rateDefinition?.cancellationText ?? "",
          mustBeGuaranteed: !!rateDefinition?.mustBeGuaranteed,
          breakfastIncluded: !!rateDefinition?.breakfastIncluded,
          memberRate: rates?.member,
          publicRate: rates.public,
          bedTypes,
        }
      }),
    hotelsByCityWithBookingCode: serviceProcedure
      .input(hotelsAvailabilityInputSchema)
      .query(async ({ input, ctx }) => {
        const { lang } = ctx
        const apiLang = toApiLang(lang)

        metrics.hotelsAvailabilityBookingCode.counter.add(1, {
          ...input,
        })
        const bookingCodeAvailabilityResponse =
          await getHotelsAvailabilityByCity(input, apiLang, ctx.serviceToken)
        if (!bookingCodeAvailabilityResponse) {
          metrics.hotelsAvailabilityBookingCode.fail.add(1, {
            ...input,
            error_type: "unknown",
          })
          return null
        }

        // Get regular availability of hotels which don't have availability with booking code.
        const unavailableHotelIds =
          bookingCodeAvailabilityResponse?.availability
            .filter((hotel) => {
              return hotel.status === "NotAvailable"
            })
            .flatMap((hotel) => {
              return hotel.hotelId
            })

        // All hotels have availability with booking code no need to fetch regular prices.
        // return response as is without any filtering as below.
        if (!unavailableHotelIds || !unavailableHotelIds.length) {
          return bookingCodeAvailabilityResponse
        }
        const unavailableHotelsInput = {
          ...input,
          bookingCode: "",
          hotelIds: unavailableHotelIds,
        }
        const unavailableHotels = await getHotelsAvailabilityByHotelIds(
          unavailableHotelsInput,
          apiLang,
          ctx.serviceToken
        )

        metrics.hotelsAvailabilityBookingCode.success.add(1, {
          ...input,
        })
        console.info("api.hotels.hotelsAvailabilityBookingCode success")

        // No regular rates available due to network or API failure (no need to filter & merge).
        if (!unavailableHotels) {
          return bookingCodeAvailabilityResponse
        }

        // Filtering the response hotels to merge bookingCode rates and regular rates in single response.
        return {
          availability: bookingCodeAvailabilityResponse.availability
            .filter((hotel) => {
              return hotel.status === "Available"
            })
            .concat(unavailableHotels.availability),
        }
      }),
  }),
  rates: router({
    get: publicProcedure
      .input(ratesInputSchema)
      .query(async ({ input, ctx }) => {
        // TODO: Do a real API call when the endpoint is ready
        // const { hotelId } = input

        // const params = new URLSearchParams()
        // const apiLang = toApiLang(language)
        // params.set("hotelId", hotelId.toString())
        // params.set("language", apiLang)

        console.info("api.hotels.rates start", JSON.stringify({}))
        const validatedHotelData = ratesSchema.safeParse(tempRatesData)

        if (!tempRatesData) {
          console.error(
            "api.hotels.rates error",
            JSON.stringify({ error: null })
          )
          //Can't return null here since consuming component does not handle null yet
          // return null
        }
        if (!validatedHotelData.success) {
          console.error(
            "api.hotels.rates validation error",
            JSON.stringify({
              error: validatedHotelData.error,
            })
          )
          throw badRequestError()
        }
        console.info("api.hotels.rates success", JSON.stringify({}))
        return validatedHotelData.data
      }),
  }),
  get: serviceProcedure
    .input(hotelInputSchema)
    .query(async ({ ctx, input }) => {
      return getHotel(input, ctx.serviceToken)
    }),
  hotels: router({
    byCountry: router({
      get: contentStackBaseWithServiceProcedure
        .input(getHotelsByCountryInput)
        .query(async ({ ctx, input }) => {
          const { lang, serviceToken } = ctx
          const { country } = input

          const options: RequestOptionsWithOutBody = {
            // needs to clear default option as only
            // cache or next.revalidate is permitted
            cache: undefined,
            headers: {
              Authorization: `Bearer ${serviceToken}`,
            },
            next: {
              revalidate: env.CACHE_TIME_HOTELS,
            },
          }
          const hotelIdsParams = new URLSearchParams({
            language: ApiLang.En,
            country,
          })
          const hotelIds = await getHotelIdsByCountry(
            country,
            options,
            hotelIdsParams
          )

          return await getHotelsByHotelIds(hotelIds, lang, serviceToken)
        }),
    }),
    byCityIdentifier: router({
      get: contentStackBaseWithServiceProcedure
        .input(getHotelsByCityIdentifierInput)
        .query(async ({ ctx, input }) => {
          const { lang, serviceToken } = ctx
          const { cityIdentifier } = input

          const hotelIds = await getHotelIdsByCityIdentifier(
            cityIdentifier,
            serviceToken
          )

          return await getHotelsByHotelIds(hotelIds, lang, serviceToken)
        }),
    }),
    byCSFilter: router({
      get: contentStackBaseWithServiceProcedure
        .input(getHotelsByCSFilterInput)
        .query(async function ({ ctx, input }) {
          const { locationFilter, hotelsToInclude } = input

          const language = ctx.lang
          const apiLang = toApiLang(language)
          const options: RequestOptionsWithOutBody = {
            // needs to clear default option as only
            // cache or next.revalidate is permitted
            cache: undefined,
            headers: {
              Authorization: `Bearer ${ctx.serviceToken}`,
            },
            next: {
              revalidate: env.CACHE_TIME_HOTELS,
            },
          }

          let hotelsToFetch: string[] = []

          metrics.hotels.counter.add(1, {
            input: JSON.stringify(input),
            language,
          })
          console.info(
            "api.hotel.hotels start",
            JSON.stringify({
              query: {
                ...input,
                language,
              },
            })
          )

          if (hotelsToInclude.length) {
            hotelsToFetch = hotelsToInclude
          } else if (locationFilter?.city) {
            const locationsParams = new URLSearchParams({
              language: apiLang,
            })
            const locations = await getLocations(
              language,
              options,
              locationsParams,
              null
            )
            if (!locations || "error" in locations) {
              return []
            }

            const cityId = locations
              .filter(
                (loc): loc is CityLocation =>
                  "type" in loc && loc.type === "cities"
              )
              .find((loc) => loc.cityIdentifier === locationFilter.city)?.id

            if (!cityId) {
              metrics.hotels.fail.add(1, {
                input: JSON.stringify(input),
                language,
                error_type: "not_found",
                error: `CityId not found for cityIdentifier: ${locationFilter.city}`,
              })

              console.error(
                "api.hotel.hotels not found error",
                JSON.stringify({
                  query: { ...input, language },
                  error: `CityId not found for cityIdentifier: ${locationFilter.city}`,
                })
              )
              return []
            }
            const hotelIdsParams = new URLSearchParams({
              language: apiLang,
              city: cityId,
            })
            const hotelIds = await getHotelIdsByCityId(
              cityId,
              options,
              hotelIdsParams
            )

            if (!hotelIds?.length) {
              metrics.hotels.fail.add(1, {
                cityId,
                language,
                error_type: "not_found",
                error: `No hotelIds found for cityId: ${cityId}`,
              })

              console.error(
                "api.hotel.hotels not found error",
                JSON.stringify({
                  query: { cityId, language },
                  error: `No hotelIds found for cityId: ${cityId}`,
                })
              )
              return []
            }

            const filteredHotelIds = hotelIds.filter(
              (id) => !locationFilter.excluded.includes(id)
            )

            hotelsToFetch = filteredHotelIds
          } else if (locationFilter?.country) {
            const hotelIdsParams = new URLSearchParams({
              language: ApiLang.En,
              country: locationFilter.country,
            })
            const hotelIds = await getHotelIdsByCountry(
              locationFilter.country,
              options,
              hotelIdsParams
            )

            if (!hotelIds?.length) {
              metrics.hotels.fail.add(1, {
                country: locationFilter.country,
                language,
                error_type: "not_found",
                error: `No hotelIds found for country: ${locationFilter.country}`,
              })

              console.error(
                "api.hotel.hotels not found error",
                JSON.stringify({
                  query: { country: locationFilter.country, language },
                  error: `No hotelIds found for cityId: ${locationFilter.country}`,
                })
              )
              return []
            }

            const filteredHotelIds = hotelIds.filter(
              (id) => !locationFilter.excluded.includes(id)
            )

            hotelsToFetch = filteredHotelIds
          }

          if (!hotelsToFetch.length) {
            metrics.hotels.fail.add(1, {
              input: JSON.stringify(input),
              language,
              error_type: "not_found",
              error: `Couldn't find any hotels for given input: ${JSON.stringify(input)}`,
            })

            console.error(
              "api.hotel.hotels not found error",
              JSON.stringify({
                query: JSON.stringify(input),
                error: `Couldn't find any hotels for given input: ${JSON.stringify(input)}`,
              })
            )
            return []
          }

          const hotels = await Promise.all(
            hotelsToFetch.map(async (hotelId) => {
              const [hotelData, url] = await Promise.all([
                getHotel(
                  { hotelId, isCardOnlyPayment: false, language },
                  ctx.serviceToken
                ),
                getHotelPageUrl(language, hotelId),
              ])

              return hotelData
                ? {
                    ...hotelData,
                    url,
                  }
                : null
            })
          )

          metrics.hotels.success.add(1, {
            input: JSON.stringify(input),
            language,
          })

          console.info(
            "api.hotels success",
            JSON.stringify({
              query: {
                input: JSON.stringify(input),
                language,
              },
            })
          )

          return hotels.filter((hotel): hotel is HotelDataWithUrl => !!hotel)
        }),
    }),
  }),
  nearbyHotelIds: serviceProcedure
    .input(nearbyHotelIdsInput)
    .query(async function ({ ctx, input }) {
      const { lang } = ctx
      const apiLang = toApiLang(lang)

      const { hotelId } = input
      const params: Record<string, string | number> = {
        language: apiLang,
      }
      metrics.nearbyHotelIds.counter.add(1, {
        hotelId,
      })
      console.info(
        "api.hotels.nearbyHotelIds start",
        JSON.stringify({ query: { hotelId, params } })
      )
      const apiResponse = await api.get(
        api.endpoints.v1.Hotel.Hotels.nearbyHotels(hotelId),
        {
          headers: {
            Authorization: `Bearer ${ctx.serviceToken}`,
          },
        },
        params
      )
      if (!apiResponse.ok) {
        const text = await apiResponse.text()
        metrics.nearbyHotelIds.fail.add(1, {
          hotelId,
          error_type: "http_error",
          error: JSON.stringify({
            status: apiResponse.status,
            statusText: apiResponse.statusText,
            text,
          }),
        })
        console.error(
          "api.hotels.nearbyHotelIds error",
          JSON.stringify({
            query: { hotelId, params },
            error: {
              status: apiResponse.status,
              statusText: apiResponse.statusText,
              text,
            },
          })
        )
        return null
      }
      const apiJson = await apiResponse.json()
      const validateHotelData = getNearbyHotelIdsSchema.safeParse(apiJson)
      if (!validateHotelData.success) {
        metrics.nearbyHotelIds.fail.add(1, {
          hotelId,
          error_type: "validation_error",
          error: JSON.stringify(validateHotelData.error),
        })
        console.error(
          "api.hotels.nearbyHotelIds validation error",
          JSON.stringify({
            query: { hotelId, params },
            error: validateHotelData.error,
          })
        )
        throw badRequestError()
      }
      metrics.nearbyHotelIds.success.add(1, {
        hotelId,
      })
      console.info(
        "api.hotels.nearbyHotelIds success",
        JSON.stringify({
          query: { hotelId, params },
        })
      )

      return validateHotelData.data.map((id: string) => parseInt(id, 10))
    }),
  locations: router({
    get: serviceProcedure.query(async function ({ ctx }) {
      const searchParams = new URLSearchParams()
      searchParams.set("language", toApiLang(ctx.lang))

      const options: RequestOptionsWithOutBody = {
        // needs to clear default option as only
        // cache or next.revalidate is permitted
        cache: undefined,
        headers: {
          Authorization: `Bearer ${ctx.serviceToken}`,
        },
        next: {
          revalidate: env.CACHE_TIME_HOTELS,
        },
      }

      const countries = await getCountries(options, searchParams, ctx.lang)
      if (!countries) {
        return null
      }
      const countryNames = countries.data.map((country) => country.name)
      const citiesByCountry = await getCitiesByCountry(
        countryNames,
        options,
        searchParams,
        ctx.lang
      )

      const locations = await getLocations(
        ctx.lang,
        options,
        searchParams,
        citiesByCountry
      )

      if (Array.isArray(locations)) {
        return {
          data: locations,
        }
      }

      return locations
    }),
  }),
  map: router({
    city: serviceProcedure
      .input(cityCoordinatesInputSchema)
      .query(async function ({ input }) {
        const apiKey = process.env.GOOGLE_STATIC_MAP_KEY
        const { city, hotel } = input

        async function fetchCoordinates(address: string) {
          const url = `https://maps.googleapis.com/maps/api/geocode/json?address=${encodeURIComponent(address)}&key=${apiKey}`
          const response = await fetch(url)
          const data = await response.json()

          if (data.status !== "OK") {
            console.error(`Geocode error: ${data.status}`)
            return null
          }

          const location = data.results[0]?.geometry?.location
          if (!location) {
            console.error("No location found in geocode response")
            return null
          }

          return location
        }

        let location = await fetchCoordinates(city)
        if (!location) {
          location = await fetchCoordinates(`${city}, ${hotel.address}`)
        }

        if (!location) {
          throw new Error("Unable to fetch coordinates")
        }

        return location
      }),
  }),
  meetingRooms: safeProtectedServiceProcedure
    .input(getMeetingRoomsInputSchema)
    .query(async function ({ ctx, input }) {
      const { hotelId, language } = input

      const params: Record<string, string | string[]> = {
        hotelId,
        language,
      }
      const metricsData = { ...params, hotelId: input.hotelId }
      metrics.meetingRooms.counter.add(1, metricsData)
      console.info(
        "api.hotels.meetingRooms start",
        JSON.stringify({ query: { hotelId, params } })
      )

      const apiResponse = await api.get(
        api.endpoints.v1.Hotel.Hotels.meetingRooms(input.hotelId),
        {
          cache: undefined,
          headers: {
            Authorization: `Bearer ${ctx.serviceToken}`,
          },
          next: {
            revalidate: env.CACHE_TIME_HOTELS,
          },
        },
        params
      )

      if (!apiResponse.ok) {
        const text = await apiResponse.text()
        metrics.meetingRooms.fail.add(1, {
          ...metricsData,
          error_type: "http_error",
          error: JSON.stringify({
            status: apiResponse.status,
            statusText: apiResponse.statusText,
            text,
          }),
        })
        console.error(
          "api.hotels.meetingRooms error",
          JSON.stringify({
            query: { params },
            error: {
              status: apiResponse.status,
              statusText: apiResponse.statusText,
              text,
            },
          })
        )
        return []
      }

      const apiJson = await apiResponse.json()
      const validatedMeetingRooms = meetingRoomsSchema.safeParse(apiJson)

      if (!validatedMeetingRooms.success) {
        console.error(
          "api.hotels.meetingRooms validation error",
          JSON.stringify({
            query: { params },
            error: validatedMeetingRooms.error,
          })
        )
        throw badRequestError()
      }
      metrics.meetingRooms.success.add(1, {
        hotelId,
      })
      console.info(
        "api.hotels.meetingRooms success",
        JSON.stringify({ query: { params } })
      )

      return validatedMeetingRooms.data.data
    }),
  additionalData: safeProtectedServiceProcedure
    .input(getAdditionalDataInputSchema)
    .query(async function ({ ctx, input }) {
      const { hotelId, language } = input

      const params: Record<string, string | string[]> = {
        hotelId,
        language,
      }
      const metricsData = { ...params, hotelId: input.hotelId }
      metrics.additionalData.counter.add(1, metricsData)
      console.info(
        "api.hotels.additionalData start",
        JSON.stringify({ query: { hotelId, params } })
      )

      const apiResponse = await api.get(
        api.endpoints.v1.Hotel.Hotels.additionalData(input.hotelId),
        {
          cache: undefined,
          headers: {
            Authorization: `Bearer ${ctx.serviceToken}`,
          },
          next: {
            revalidate: env.CACHE_TIME_HOTELS,
          },
        },
        params
      )

      if (!apiResponse.ok) {
        const text = await apiResponse.text()
        metrics.additionalData.fail.add(1, {
          ...metricsData,
          error_type: "http_error",
          error: JSON.stringify({
            status: apiResponse.status,
            statusText: apiResponse.statusText,
            text,
          }),
        })
        console.error(
          "api.hotels.additionalData error",
          JSON.stringify({
            query: { params },
            error: {
              status: apiResponse.status,
              statusText: apiResponse.statusText,
              text,
            },
          })
        )
        return null
      }

      const apiJson = await apiResponse.json()
      const validatedAdditionalData = additionalDataSchema.safeParse(apiJson)

      if (!validatedAdditionalData.success) {
        console.error(
          "api.hotels.additionalData validation error",
          JSON.stringify({
            query: { params },
            error: validatedAdditionalData.error,
          })
        )
        throw badRequestError()
      }
      metrics.additionalData.success.add(1, {
        hotelId,
      })
      console.info(
        "api.hotels.additionalData success",
        JSON.stringify({ query: { params } })
      )

      return validatedAdditionalData.data
    }),
  packages: router({
    get: serviceProcedure
      .input(roomPackagesInputSchema)
      .query(async ({ input, ctx }) => {
        const { hotelId, startDate, endDate, adults, children, packageCodes } =
          input

        const { lang } = ctx

        const apiLang = toApiLang(lang)

        const searchParams = new URLSearchParams({
          startDate,
          endDate,
          adults: adults.toString(),
          children: children.toString(),
          language: apiLang,
        })

        packageCodes.forEach((code) => {
          searchParams.append("packageCodes", code)
        })

        const params = searchParams.toString()

        metrics.packages.counter.add(1, {
          hotelId,
        })
        console.info(
          "api.hotels.packages start",
          JSON.stringify({ query: { hotelId, params } })
        )

        const apiResponse = await api.get(
          api.endpoints.v1.Package.Packages.hotel(hotelId),
          {
            headers: {
              Authorization: `Bearer ${ctx.serviceToken}`,
            },
          },
          searchParams
        )

        if (!apiResponse.ok) {
          metrics.packages.fail.add(1, {
            hotelId,
            error_type: "http_error",
            error: JSON.stringify({
              status: apiResponse.status,
              statusText: apiResponse.statusText,
            }),
          })
          console.error(
            "api.hotels.packages error",
            JSON.stringify({ query: { hotelId, params } })
          )
          return null
        }

        const apiJson = await apiResponse.json()
        const validatedPackagesData = packagesSchema.safeParse(apiJson)
        if (!validatedPackagesData.success) {
          metrics.packages.fail.add(1, {
            hotelId,
            error_type: "validation_error",
            error: JSON.stringify(validatedPackagesData.error),
          })

          console.error(
            "api.hotels.packages validation error",
            JSON.stringify({
              query: { hotelId, params },
              error: validatedPackagesData.error,
            })
          )
          return null
        }

        metrics.packages.success.add(1, {
          hotelId,
        })
        console.info(
          "api.hotels.packages success",
          JSON.stringify({ query: { hotelId, params: params } })
        )

        return validatedPackagesData.data
      }),
    breakfast: safeProtectedServiceProcedure
      .input(breakfastPackageInputSchema)
      .query(async function ({ ctx, input }) {
        const { lang } = ctx

        const apiLang = toApiLang(lang)
        const params = {
          Adults: input.adults,
          EndDate: dt(input.toDate).format("YYYY-MM-DD"),
          StartDate: dt(input.fromDate).format("YYYY-MM-DD"),
          language: apiLang,
        }

        const metricsData = { ...params, hotelId: input.hotelId }
        metrics.breakfastPackage.counter.add(1, metricsData)
        console.info(
          "api.package.breakfast start",
          JSON.stringify({ query: metricsData })
        )

        const apiResponse = await api.get(
          api.endpoints.v1.Package.Breakfast.hotel(input.hotelId),
          {
            cache: undefined,
            headers: {
              Authorization: `Bearer ${ctx.serviceToken}`,
            },
            next: {
              revalidate: 60,
            },
          },
          params
        )

        if (!apiResponse.ok) {
          const text = await apiResponse.text()
          metrics.breakfastPackage.fail.add(1, {
            ...metricsData,
            error_type: "http_error",
            error: JSON.stringify({
              status: apiResponse.status,
              statusText: apiResponse.statusText,
              text,
            }),
          })
          console.error(
            "api.hotels.hotelsAvailability error",
            JSON.stringify({
              query: metricsData,
              error: {
                status: apiResponse.status,
                statusText: apiResponse.statusText,
                text,
              },
            })
          )
          return null
        }

        const apiJson = await apiResponse.json()
        const breakfastPackages = breakfastPackagesSchema.safeParse(apiJson)
        if (!breakfastPackages.success) {
          metrics.breakfastPackage.fail.add(1, {
            ...metricsData,
            error_type: "validation_error",
            error: JSON.stringify(breakfastPackages.error),
          })
          console.error(
            "api.package.breakfast validation error",
            JSON.stringify({
              query: metricsData,
              error: breakfastPackages.error,
            })
          )
          return null
        }

        metrics.breakfastPackage.success.add(1, metricsData)
        console.info(
          "api.package.breakfast success",
          JSON.stringify({
            query: metricsData,
          })
        )

        if (ctx.session?.token) {
          const apiUser = await getVerifiedUser({ session: ctx.session })
          if (apiUser && !("error" in apiUser)) {
            const user = parsedUser(apiUser.data, false)
            if (
              user.membership &&
              ["L6", "L7"].includes(user.membership.membershipLevel)
            ) {
              const freeBreakfastPackage = breakfastPackages.data.find(
                (pkg) => pkg.code === BreakfastPackageEnum.FREE_MEMBER_BREAKFAST
              )
              if (freeBreakfastPackage?.localPrice) {
                return [freeBreakfastPackage]
              }
            }
          }
        }

        return breakfastPackages.data.filter(
          (pkg) => pkg.code !== BreakfastPackageEnum.FREE_MEMBER_BREAKFAST
        )
      }),
  }),
})