import { BookingStatusEnum, CancellationRuleEnum } from "@/constants/booking"
import { dt } from "@/lib/dt"

import { formatChildBedPreferences } from "../utils"
import { convertToChildType } from "./convertToChildType"
import { getPriceType } from "./getPriceType"

import type { BreakfastPackage } from "@/types/components/hotelReservation/breakfast"
import { RoomPackageCodeEnum } from "@/types/components/hotelReservation/selectRate/roomFilter"
import { BreakfastPackageEnum } from "@/types/enums/breakfast"
import { PackageTypeEnum } from "@/types/enums/packages"
import type { RateEnum } from "@/types/enums/rate"
import type { Room } from "@/types/hotel"
import type { Room as MyStayRoom } from "@/types/stores/my-stay"
import type { BookingConfirmation } from "@/types/trpc/routers/booking/confirmation"

interface MapRoomDetailsParams {
  booking: BookingConfirmation["booking"]
  rates: Record<RateEnum, string>
  room: (Room & { bedType: Room["roomTypes"][number] }) | null
  roomNumber: number
}

export function mapRoomDetails({
  booking,
  rates,
  room,
  roomNumber,
}: MapRoomDetailsParams): MyStayRoom {
  const nights = dt(booking.checkOutDate)
    .startOf("day")
    .diff(dt(booking.checkInDate).startOf("day"), "days")

  const validBreakfastPackages: string[] = [
    BreakfastPackageEnum.REGULAR_BREAKFAST,
    BreakfastPackageEnum.ANCILLARY_CHILD_PAYING_BREAKFAST,
    BreakfastPackageEnum.ANCILLARY_REGULAR_BREAKFAST,
  ]
  const breakfastPackage = booking.packages.find((pkg) =>
    validBreakfastPackages.includes(pkg.code)
  )

  // We don't get `requestedPrice` in packages
  const breakfast: Omit<BreakfastPackage, "requestedPrice"> | null =
    breakfastPackage
      ? {
          code: breakfastPackage.code,
          description: breakfastPackage.description,
          localPrice: {
            currency: breakfastPackage.currency,
            price: breakfastPackage.unitPrice,
            totalPrice: breakfastPackage.totalPrice,
          },
          packageType: PackageTypeEnum.BreakfastAdult,
        }
      : null

  const isCancelled = booking.reservationStatus === BookingStatusEnum.Cancelled

  const childrenAsString = formatChildBedPreferences({
    childrenAges: booking.childrenAges,
    childBedPreferences: booking.childBedPreferences,
  })

  const childrenInRoom = convertToChildType(
    booking.childrenAges,
    booking.childBedPreferences
  )

  const priceType = getPriceType(
    booking.cheques,
    booking.roomPoints,
    booking.vouchers
  )

  let rate = ""
  if (booking.rateDefinition.cancellationRule) {
    switch (booking.rateDefinition.cancellationRule) {
      case CancellationRuleEnum.CancellableBefore6PM:
        rate = rates.flex
        break
      case CancellationRuleEnum.Changeable:
        rate = rates.change
        break
      case CancellationRuleEnum.NonCancellable:
        rate = rates.save
        break
    }
  }

  const featuresPackages = booking.packages.filter(
    (pkg) =>
      pkg.code === RoomPackageCodeEnum.PET_ROOM ||
      pkg.code === RoomPackageCodeEnum.ALLERGY_ROOM ||
      pkg.code === RoomPackageCodeEnum.ACCESSIBILITY_ROOM
  )

  const packages = featuresPackages.map((pkg) => ({
    code: pkg.code as RoomPackageCodeEnum,
    description: pkg.description,
    inventories: [],
    itemCode: "",
    localPrice: {
      currency: pkg.currency,
      price: pkg.unitPrice,
      totalPrice: pkg.totalPrice,
    },
    requestedPrice: {
      currency: pkg.currency,
      price: pkg.unitPrice,
      totalPrice: pkg.totalPrice,
    },
  }))

  return {
    adults: booking.adults,
    bedType: {
      description: room?.bedType.mainBed.description ?? "",
      roomTypeCode: room?.bedType.code ?? "",
    },
    bookingCode: booking.bookingCode,
    breakfast,
    canChangeDate: booking.canChangeDate,
    cancellationNumber: booking.cancellationNumber,
    checkInDate: booking.checkInDate,
    checkOutDate: booking.checkOutDate,
    cheques: booking.cheques,
    childrenAges: booking.childrenAges,
    childrenAsString,
    childrenInRoom,
    confirmationNumber: booking.confirmationNumber,
    createDateTime: booking.createDateTime,
    currencyCode: booking.currencyCode,
    guaranteeInfo: booking.guaranteeInfo,
    guest: booking.guest,
    hotelId: booking.hotelId,
    isCancelable: booking.isCancelable,
    isCancelled,
    linkedReservations: booking.linkedReservations,
    mainRoom: booking.mainRoom,
    multiRoom: booking.multiRoom,
    packages,
    priceType,
    rate,
    rateDefinition: booking.rateDefinition,
    refId: booking.refId,
    reservationStatus: booking.reservationStatus,
    room,
    roomName: room?.name ?? "",
    roomNumber,
    roomPoints: booking.roomPoints,
    roomPrice: {
      perNight: {
        local: {
          currency: booking.currencyCode,
          price: isCancelled ? 0 : booking.roomPrice / nights,
        },
        requested: undefined,
      },
      perStay: {
        local: {
          currency: booking.currencyCode,
          price: isCancelled ? 0 : booking.roomPrice,
        },
        requested: undefined,
      },
    },
    roomTypeCode: booking.roomTypeCode,
    terms: booking.rateDefinition.cancellationText,
    totalPoints: booking.totalPoints,
    totalPrice: booking.totalPrice,
    totalPriceExVat: booking.totalPriceExVat,
    vatAmount: booking.vatAmount,
    vatPercentage: booking.vatPercentage,
    vouchers: booking.vouchers,
  }
}