import React, { useEffect, useState } from 'react'
import { useRouter } from 'next/router'
import Link from 'next/link'
import Layout from '../../../../components/layout'
import Calendar from '../../../../components/calendar'
import { getServerSideBooking } from '../../../../lib/getServerSideProps'
import { Booking } from '../../../../db/booking'
import { getBookingStatus, patchBooking } from '../../../../helpers/booking'
import { daysFormatFrontend } from '../../../../helpers/date'
import { log } from '../../../../helpers/log'
import { BOOKING_STATUS } from '../../../../db/enums'

export const getServerSideProps = getServerSideBooking

function ShowBookingAdmin({ booking: bookingProp }: { booking: Booking }) {
  const router = useRouter()
  const [booking, setBooking] = useState(bookingProp)
  const [storingBooking, setStoringBooking] = useState(false)
  const [storingBookingError, setStoringBookingError] = useState(null)

  // in case the props change, update the internal state
  useEffect(() => setBooking(bookingProp), [bookingProp])

  const onStoreBooking = async (confirmed: boolean) => {
    try {
      setStoringBookingError(null)
      setStoringBooking(true)
      const updatedBooking = await patchBooking(booking.uuid, {
        status: confirmed ? BOOKING_STATUS.CONFIRMED : BOOKING_STATUS.REJECTED,
      })
      setBooking(updatedBooking)
    } catch (error) {
      setStoringBookingError('Buchung konnte nicht gespeichert werden.')
      log.error('Failed to store booking', error)
    }
    setStoringBooking(false)
  }

  return (
    <Layout>
      <h2 className="text-3xl">Buchung {booking.uuid}</h2>
      <Calendar start={booking.startDate} end={booking.endDate} />
      <div>
        <strong>Buchungszeitraum:</strong> {daysFormatFrontend(booking.days)}
      </div>
      <div>
        <strong>Bucher:</strong> {booking.name}
      </div>
      <div>
        <strong>Buchungsstatus:</strong> {getBookingStatus(booking.status)}
      </div>
      {storingBookingError && (
        <div className="error-message flex-grow">{storingBookingError}</div>
      )}
      <div className="my-6">
        <button
          onClick={() => onStoreBooking(true)}
          className="btn btn-blue"
          disabled={storingBooking}
        >
          Buchung Bestätigen
        </button>
        <button
          onClick={() => onStoreBooking(false)}
          className="btn btn-red"
          disabled={storingBooking}
        >
          Buchung Abweisen
        </button>
        <Link href={`${router.asPath}/bill`}>
          <a className="btn btn-gray">Rechnung</a>
        </Link>
      </div>
    </Layout>
  )
}

ShowBookingAdmin.authenticationRequired = true

export default ShowBookingAdmin