"use client"
import { useEffect, useState } from "react"
import { useWatch } from "react-hook-form"
import { useIntl } from "react-intl"

import { dt } from "@/lib/dt"

import { EditIcon, SearchIcon } from "@/components/Icons"
import Divider from "@/components/TempDesignSystem/Divider"
import Body from "@/components/TempDesignSystem/Text/Body"
import Caption from "@/components/TempDesignSystem/Text/Caption"
import useLang from "@/hooks/useLang"

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

import type {
  BookingWidgetSchema,
  BookingWidgetToggleButtonProps,
} from "@/types/components/bookingWidget"
import type { Location } from "@/types/trpc/routers/hotel/locations"

export default function MobileToggleButton({
  openMobileSearch,
}: BookingWidgetToggleButtonProps) {
  const [hasMounted, setHasMounted] = useState(false)
  const intl = useIntl()
  const lang = useLang()
  const d = useWatch({ name: "date" })
  const location = useWatch({ name: "location" })
  const rooms: BookingWidgetSchema["rooms"] = useWatch({ name: "rooms" })

  const parsedLocation: Location | null = location
    ? JSON.parse(decodeURIComponent(location))
    : null

  const nights = dt(d.toDate).diff(dt(d.fromDate), "days")

  const selectedFromDate = dt(d.fromDate).locale(lang).format("D MMM")
  const selectedToDate = dt(d.toDate).locale(lang).format("D MMM")

  useEffect(() => {
    setHasMounted(true)
  }, [])

  if (!hasMounted) {
    return null
  }

  if (parsedLocation && d) {
    const totalRooms = rooms.length
    const totalAdults = rooms.reduce((acc, room) => {
      if (room.adults) {
        acc = acc + room.adults
      }
      return acc
    }, 0)
    return (
      <div className={styles.complete} onClick={openMobileSearch} role="button">
        <div>
          <Caption color="red">{parsedLocation.name}</Caption>
          <Caption>
            {`${selectedFromDate} - ${selectedToDate} (${intl.formatMessage(
              { id: "booking.nights" },
              { totalNights: nights }
            )}) ${intl.formatMessage({ id: "booking.adults" }, { totalAdults })}, ${intl.formatMessage({ id: "booking.rooms" }, { totalRooms })}`}
          </Caption>
        </div>
        <div className={styles.icon}>
          <EditIcon color="white" />
        </div>
      </div>
    )
  }

  return (
    <div className={styles.partial} onClick={openMobileSearch} role="button">
      <div>
        <Caption color="red">{intl.formatMessage({ id: "Where to" })}</Caption>
        <Body color="uiTextPlaceholder">
          {parsedLocation
            ? parsedLocation.name
            : intl.formatMessage({ id: "Destination" })}
        </Body>
      </div>
      <Divider color="baseSurfaceSubtleNormal" variant="vertical" />
      <div>
        <Caption color="red">
          {intl.formatMessage(
            { id: "booking.nights" },
            { totalNights: nights }
          )}
        </Caption>
        <Body>
          {selectedFromDate} - {selectedToDate}
        </Body>
      </div>
      <div className={styles.icon}>
        <SearchIcon color="white" />
      </div>
    </div>
  )
}
