"use client"
import { Fragment } from "react"
import { useIntl } from "react-intl"

import { dt } from "@scandic-hotels/common/dt"
import { Typography } from "@scandic-hotels/design-system/Typography"

import { longDateFormat } from "@/constants/dateFormats"

import useLang from "@/hooks/useLang"

import BookingCodeRow from "./Row/BookingCode"
import HeaderRow from "./Row/Header"
import LargeRow from "./Row/Large"
import CorporateChequePrice, {
  type CorporateChequePriceType,
} from "./Row/Price/CorporateCheque"
import RedemptionPrice, {
  type RedemptionPriceType,
} from "./Row/Price/Redemption"
import RegularPrice, { type RegularPriceType } from "./Row/Price/Regular"
import VoucherPrice, { type VoucherPriceType } from "./Row/Price/Voucher"
import VatRow from "./Row/Vat"
import Breakfast from "./Breakfast"
import Tbody from "./Tbody"

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

import type { CurrencyEnum } from "@scandic-hotels/common/constants/currency"
import type { Child } from "@scandic-hotels/trpc/types/child"
import type { Packages } from "@scandic-hotels/trpc/types/packages"
import type { RateDefinition } from "@scandic-hotels/trpc/types/roomAvailability"

import type { BreakfastPackage } from "@/types/components/hotelReservation/breakfast"
import type { BedTypeSchema } from "@/types/components/hotelReservation/enterDetails/bedType"
import type { Price } from "@/types/components/hotelReservation/price"

type RoomPrice =
  | CorporateChequePriceType
  | RegularPriceType
  | RedemptionPriceType
  | VoucherPriceType

export interface Room {
  adults: number
  bedType: BedTypeSchema | undefined
  breakfast: Omit<BreakfastPackage, "requestedPrice"> | false | undefined | null
  breakfastChildren?: Omit<BreakfastPackage, "requestedPrice"> | null
  breakfastIncluded: boolean
  childrenInRoom: Child[] | undefined
  packages: Packages | null
  price: RoomPrice
  rateDefinition: Pick<RateDefinition, "isMemberRate">
  roomType: string
}

export interface PriceDetailsTableProps {
  bookingCode?: string
  fromDate: string
  isCampaignRate?: boolean
  rooms: Room[]
  toDate: string
  totalPrice: Price
  vat: number
  defaultCurrency: CurrencyEnum
}

export default function PriceDetailsTable({
  bookingCode,
  fromDate,
  isCampaignRate,
  rooms,
  toDate,
  totalPrice,
  vat,
  defaultCurrency,
}: PriceDetailsTableProps) {
  const intl = useIntl()
  const lang = useLang()

  const nights = dt(toDate).diff(fromDate, "days")
  const nightsMsg = intl.formatMessage(
    { defaultMessage: "{totalNights, plural, one {# night} other {# nights}}" },
    { totalNights: nights }
  )

  const arrival = dt(fromDate).locale(lang).format(longDateFormat[lang])
  const departue = dt(toDate).locale(lang).format(longDateFormat[lang])
  const duration = ` ${arrival} - ${departue} (${nightsMsg})`

  const isAllBreakfastIncluded = rooms.every((room) => room.breakfastIncluded)

  const allPricesIsDiscounted = rooms.every((room) => {
    if (!("regular" in room.price)) {
      return false
    }
    if (room.rateDefinition.isMemberRate) {
      return true
    }
    if (!room.price.regular) {
      return false
    }

    return room.price.regular.pricePerStay > room.price.regular.pricePerStay
  })

  return (
    <table className={styles.priceDetailsTable}>
      {rooms.map((room, idx) => {
        let currency = ""
        let chequePrice: CorporateChequePriceType["corporateCheque"] | undefined
        if ("corporateCheque" in room.price && room.price.corporateCheque) {
          chequePrice = room.price.corporateCheque

          if (room.price.corporateCheque.currency) {
            currency = room.price.corporateCheque.currency
          }
        }

        let isMemberRate = false
        let price: RegularPriceType["regular"] | undefined
        if ("regular" in room.price && room.price.regular) {
          price = room.price.regular
          currency = room.price.regular.currency
          isMemberRate = room.rateDefinition.isMemberRate
        }

        let redemptionPrice: RedemptionPriceType["redemption"] | undefined
        if ("redemption" in room.price && room.price.redemption) {
          redemptionPrice = room.price.redemption

          if (room.price.redemption.currency) {
            currency = room.price.redemption.currency
          }
        }

        let voucherPrice: VoucherPriceType["voucher"] | undefined
        if ("voucher" in room.price && room.price.voucher) {
          voucherPrice = room.price.voucher
        }

        if (!currency) {
          currency = defaultCurrency
        }

        if (!price && !voucherPrice && !chequePrice && !redemptionPrice) {
          return null
        }

        return (
          <Fragment key={idx}>
            <Tbody>
              {rooms.length > 1 && (
                <tr>
                  <th colSpan={2}>
                    <Typography variant="Body/Paragraph/mdBold">
                      <span>
                        {intl.formatMessage(
                          { defaultMessage: "Room {roomIndex}" },
                          { roomIndex: idx + 1 }
                        )}
                      </span>
                    </Typography>
                  </th>
                </tr>
              )}
              <HeaderRow title={room.roomType} subtitle={duration} />
              <RegularPrice
                bedType={room.bedType}
                packages={room.packages}
                isMemberRate={isMemberRate}
                nights={nights}
                price={price}
              />
              <CorporateChequePrice
                bedType={room.bedType}
                currency={currency}
                nights={nights}
                packages={room.packages}
                price={chequePrice}
              />
              <RedemptionPrice
                bedType={room.bedType}
                currency={currency}
                nights={nights}
                packages={room.packages}
                price={redemptionPrice}
              />
              <VoucherPrice
                bedType={room.bedType}
                currency={currency}
                nights={nights}
                packages={room.packages}
                price={voucherPrice}
              />
            </Tbody>

            <Breakfast
              adults={room.adults}
              breakfast={room.breakfast}
              breakfastChildren={room.breakfastChildren}
              breakfastIncluded={room.breakfastIncluded}
              childrenInRoom={room.childrenInRoom}
              currency={currency}
              nights={nights}
            />
          </Fragment>
        )
      })}
      <Tbody>
        <HeaderRow title={intl.formatMessage({ defaultMessage: "Total" })} />

        <VatRow totalPrice={totalPrice} vat={vat} />

        <LargeRow
          allPricesIsDiscounted={allPricesIsDiscounted}
          label={intl.formatMessage({ defaultMessage: "Price including VAT" })}
          price={totalPrice}
        />

        <BookingCodeRow
          isCampaignRate={isCampaignRate}
          isBreakfastIncluded={isAllBreakfastIncluded}
          bookingCode={bookingCode}
        />
      </Tbody>
    </table>
  )
}