import { CurrencyEnum } from "@scandic-hotels/common/constants/currency"
import { formatPrice } from "@scandic-hotels/common/utils/numberFormatting"

import type { IntlShape } from "react-intl"

import type { Room } from "@/types/stores/my-stay"

export function calculateTotalPrice(
  rooms: Room[],
  currency: CurrencyEnum,
  intl: IntlShape,
  allRoomsAreCancelled: boolean
) {
  const totals = rooms.reduce(
    (total, room) => {
      if (!allRoomsAreCancelled && room.isCancelled) {
        return total
      }

      if (room.cheques) {
        total.cheques = total.cheques + room.cheques
      }
      if (room.vouchers) {
        total.vouchers = total.vouchers + room.vouchers
      }
      if (room.totalPoints) {
        total.points = total.points + room.totalPoints
      }
      // room.totalPrice is a negative value when
      // its a vouchers booking (╯°□°）╯︵ ┻━┻
      if (room.totalPrice && !room.vouchers) {
        total.cash = total.cash + room.totalPrice
      }
      return total
    },
    {
      cash: 0,
      cheques: 0,
      points: 0,
      vouchers: 0,
    }
  )

  let totalPrice = ""
  if (totals.cheques) {
    totalPrice = `${totals.cheques} ${CurrencyEnum.CC}`
  }
  if (totals.points) {
    const appendTotalPrice = totalPrice ? `${totalPrice} + ` : ""
    totalPrice = `${appendTotalPrice}${totals.points} ${CurrencyEnum.POINTS}`
  }
  if (totals.vouchers) {
    const appendTotalPrice = totalPrice ? `${totalPrice} + ` : ""
    totalPrice = `${appendTotalPrice}${totals.vouchers} ${intl.formatMessage(
      {
        defaultMessage:
          "{numberOfVouchers, plural, one {Voucher} other {Vouchers}}",
      },
      {
        numberOfVouchers: totals.vouchers,
      }
    )}`
  }
  if (totals.cash) {
    const appendTotalPrice = totalPrice ? `${totalPrice} + ` : ""
    const cashPrice = formatPrice(intl, totals.cash, currency)
    totalPrice = `${appendTotalPrice}${cashPrice}`
  }

  return totalPrice
}

export function calculateTotalPoints(
  rooms: Room[],
  allRoomsAreCancelled: boolean
) {
  return rooms.reduce((total, room) => {
    if (!allRoomsAreCancelled && room.isCancelled) {
      return total
    }
    return total + room.totalPoints
  }, 0)
}

export function isAllRoomsCancelled(rooms: Room[]) {
  return !rooms.some((room) => room.isCancelled === false)
}