import { differenceInCalendarDays, format, isWeekend } from "date-fns"
import { notFound } from "next/navigation"
import { Suspense } from "react"

import {
  alternativeHotels,
  alternativeHotelsMap,
  selectHotel,
  selectHotelMap,
} from "@/constants/routes/hotelReservation"

import {
  fetchAlternativeHotels,
  fetchAvailableHotels,
  fetchBookingCodeAvailableHotels,
  getFiltersFromHotels,
} from "@/app/[lang]/(live)/(public)/hotelreservation/(standard)/select-hotel/utils"
import { getHotelSearchDetails } from "@/app/[lang]/(live)/(public)/hotelreservation/(standard)/utils"
import { ChevronRightIcon } from "@/components/Icons"
import StaticMap from "@/components/Maps/StaticMap"
import Breadcrumbs from "@/components/TempDesignSystem/Breadcrumbs"
import Button from "@/components/TempDesignSystem/Button"
import Link from "@/components/TempDesignSystem/Link"
import Subtitle from "@/components/TempDesignSystem/Text/Subtitle"
import TrackingSDK from "@/components/TrackingSDK"
import { getIntl } from "@/i18n"
import { safeTry } from "@/utils/safeTry"
import { convertObjToSearchParams } from "@/utils/url"

import HotelCardListing from "../HotelCardListing"
import BookingCodeFilter from "./BookingCodeFilter"
import HotelCount from "./HotelCount"
import HotelFilter from "./HotelFilter"
import HotelSorter from "./HotelSorter"
import MobileMapButtonContainer from "./MobileMapButtonContainer"
import NoAvailabilityAlert from "./NoAvailabilityAlert"

import styles from "./selectHotel.module.css"

import { ChildBedMapEnum } from "@/types/components/bookingWidget/enums"
import type { HotelData } from "@/types/components/hotelReservation/selectHotel/hotelCardListingProps"
import type { SelectHotelProps } from "@/types/components/hotelReservation/selectHotel/selectHotel"
import type { SelectHotelSearchParams } from "@/types/components/hotelReservation/selectHotel/selectHotelSearchParams"
import {
  TrackingChannelEnum,
  type TrackingSDKHotelInfo,
  type TrackingSDKPageData,
} from "@/types/components/tracking"

export default async function SelectHotel({
  params,
  searchParams,
  isAlternativeHotels,
}: SelectHotelProps) {
  const intl = await getIntl()

  const getHotelSearchDetailsPromise = safeTry(
    getHotelSearchDetails(
      {
        searchParams: searchParams as SelectHotelSearchParams & {
          [key: string]: string
        },
      },
      isAlternativeHotels
    )
  )

  const [searchDetails] = await getHotelSearchDetailsPromise

  if (!searchDetails) return notFound()

  const {
    city,
    selectHotelParams,
    adultsInRoom,
    childrenInRoomString,
    childrenInRoom,
    hotel: isAlternativeFor,
    bookingCode,
    redemption,
  } = searchDetails

  if (!city) return notFound()

  const hotelsPromise = isAlternativeFor
    ? safeTry(
        fetchAlternativeHotels(isAlternativeFor.id, {
          roomStayStartDate: selectHotelParams.fromDate,
          roomStayEndDate: selectHotelParams.toDate,
          adults: adultsInRoom[0],
          children: childrenInRoomString,
          bookingCode,
          redemption,
        })
      )
    : bookingCode
      ? safeTry(
          fetchBookingCodeAvailableHotels({
            cityId: city.id,
            roomStayStartDate: selectHotelParams.fromDate,
            roomStayEndDate: selectHotelParams.toDate,
            adults: adultsInRoom[0],
            children: childrenInRoomString,
            bookingCode,
          })
        )
      : safeTry(
          fetchAvailableHotels({
            cityId: city.id,
            roomStayStartDate: selectHotelParams.fromDate,
            roomStayEndDate: selectHotelParams.toDate,
            adults: adultsInRoom[0],
            children: childrenInRoomString,
            redemption,
          })
        )

  const [hotels] = await hotelsPromise

  const arrivalDate = new Date(selectHotelParams.fromDate)
  const departureDate = new Date(selectHotelParams.toDate)

  const isCityWithCountry = (city: any): city is { country: string } =>
    "country" in city
  const validHotels =
    hotels?.filter((hotel): hotel is HotelData => hotel?.hotelData !== null) ||
    []
  const filterList = getFiltersFromHotels(validHotels)

  const convertedSearchParams = convertObjToSearchParams(selectHotelParams)
  const breadcrumbs = [
    {
      title: intl.formatMessage({ id: "Home" }),
      href: `/${params.lang}`,
      uid: "home-page",
    },
    {
      title: intl.formatMessage({ id: "Hotel reservation" }),
      href: `/${params.lang}/hotelreservation`,
      uid: "hotel-reservation",
    },
    isAlternativeFor
      ? {
          title: intl.formatMessage({ id: "Alternative hotels" }),
          href: `${alternativeHotels(params.lang)}/?${convertedSearchParams}`,
          uid: "alternative-hotels",
        }
      : {
          title: intl.formatMessage({ id: "Select hotel" }),
          href: `${selectHotel(params.lang)}/?${convertedSearchParams}`,
          uid: "select-hotel",
        },
    isAlternativeFor
      ? {
          title: isAlternativeFor.name,
          uid: isAlternativeFor.id,
        }
      : {
          title: city.name,
          uid: city.id,
        },
  ]

  const isAllUnavailable =
    hotels?.every((hotel) => hotel.price === undefined) || false

  const pageTrackingData: TrackingSDKPageData = {
    pageId: isAlternativeFor ? "alternative-hotels" : "select-hotel",
    domainLanguage: params.lang,
    channel: TrackingChannelEnum["hotelreservation"],
    pageName: isAlternativeFor
      ? "hotelreservation|alternative-hotels"
      : "hotelreservation|select-hotel",
    siteSections: isAlternativeFor
      ? "hotelreservation|alternative-hotels"
      : "hotelreservation|select-hotel",
    pageType: "bookinghotelspage",
    siteVersion: "new-web",
  }

  const hotelsTrackingData: TrackingSDKHotelInfo = {
    availableResults: validHotels.length,
    searchTerm: isAlternativeFor
      ? selectHotelParams.hotelId
      : (selectHotelParams.city as string),
    arrivalDate: format(arrivalDate, "yyyy-MM-dd"),
    departureDate: format(departureDate, "yyyy-MM-dd"),
    noOfAdults: adultsInRoom[0], // TODO: Handle multiple rooms,
    noOfChildren: childrenInRoom?.length,
    ageOfChildren: childrenInRoom?.map((c) => c.age).join(","),
    childBedPreference: childrenInRoom
      ?.map((c) => ChildBedMapEnum[c.bed])
      .join("|"),
    noOfRooms: 1, // // TODO: Handle multiple rooms
    duration: differenceInCalendarDays(departureDate, arrivalDate),
    leadTime: differenceInCalendarDays(arrivalDate, new Date()),
    searchType: "destination",
    bookingTypeofDay: isWeekend(arrivalDate) ? "weekend" : "weekday",
    country: validHotels?.[0]?.hotelData.address.country,
    region: validHotels?.[0]?.hotelData.address.city,
  }

  return (
    <>
      <header className={styles.header}>
        <div className={styles.headerContent}>
          <Breadcrumbs breadcrumbs={breadcrumbs} />
          <div className={styles.title}>
            <div className={styles.cityInformation}>
              <Subtitle>
                {isAlternativeFor
                  ? `${intl.formatMessage({ id: "Alternatives for" })} ${isAlternativeFor.name}`
                  : city.name}
              </Subtitle>
              <HotelCount />
            </div>
            <div className={styles.sorter}>
              <HotelSorter discreet />
            </div>
          </div>
          <MobileMapButtonContainer filters={filterList} />
        </div>
      </header>
      <main className={styles.main}>
        {bookingCode ? <BookingCodeFilter /> : null}
        <div className={styles.sideBar}>
          {hotels && hotels.length > 0 ? ( // TODO: Temp fix until API returns hotels that are not available
            <Link
              className={styles.link}
              color="burgundy"
              href={
                isAlternativeFor
                  ? alternativeHotelsMap(params.lang)
                  : selectHotelMap(params.lang)
              }
              keepSearchParams
            >
              <div className={styles.mapContainer}>
                <StaticMap
                  city={city.name}
                  country={isCityWithCountry(city) ? city.country : undefined}
                  width={340}
                  height={180}
                  zoomLevel={11}
                  mapType="roadmap"
                  altText={`Map of ${city.name} city center`}
                />
                <Button wrapping size="medium" intent="text" theme="base">
                  {intl.formatMessage({ id: "See map" })}
                  <ChevronRightIcon
                    color="baseButtonTextOnFillNormal"
                    width={20}
                    height={20}
                  />
                </Button>
              </div>
            </Link>
          ) : (
            <div className={styles.mapContainer}>
              <StaticMap
                city={city.name}
                width={340}
                height={180}
                zoomLevel={11}
                mapType="roadmap"
                altText={`Map of ${city.name} city center`}
              />
            </div>
          )}
          <HotelFilter filters={filterList} className={styles.filter} />
        </div>
        <div className={styles.hotelList}>
          <NoAvailabilityAlert
            isAlternative={!!isAlternativeFor}
            hotels={validHotels}
            isAllUnavailable={isAllUnavailable}
          />
          <HotelCardListing hotelData={validHotels} />
        </div>
      </main>
      <Suspense fallback={null}>
        <TrackingSDK
          pageData={pageTrackingData}
          hotelInfo={hotelsTrackingData}
        />
      </Suspense>
    </>
  )
}
