@kiwicom/smart-faq/src/SmartFAQ/common/booking/utils.js

// @flow

import differenceInHours from 'date-fns/difference_in_hours';

import bookingTypes from './bookingTypes';
import { URGENCY_THRESHOLD } from '../../helpers/dateUtils';
import type { BookingDetail_booking as BookingDetailType } from '../../SingleBookingPage/__generated__/BookingDetail_booking.graphql';
import type { MobileBookingDetail_booking as MobileBookingDetailType } from '../../MobileBookingHeader/__generated__/MobileBookingDetail_booking.graphql';

type BookingType = MobileBookingDetailType | BookingDetailType;

type Props = {
  +booking: BookingType,
  onSetFAQSection: (isUrgent: boolean, isPastBooking: boolean) => void,
};

export const isUrgentBooking = (
  isPastBooking: ?boolean,
  departureTime: ?Date,
) => {
  const timeDelta = departureTime
    ? differenceInHours(departureTime, new Date())
    : null;
  const isUrgent = timeDelta !== null && URGENCY_THRESHOLD > timeDelta;

  return isPastBooking === false && isUrgent;
};

export const getDepartureTimeByType = (booking: BookingType) => {
  let date = null;

  if (booking.type === bookingTypes.ONE_WAY) {
    date = booking.trip?.departure?.time;
  }

  if (booking.type === bookingTypes.RETURN) {
    date = booking.outbound?.departure?.time;
  }

  if (booking.type === bookingTypes.MULTICITY) {
    date = booking.start?.time;
  }

  return date ? new Date(date) : null;
};

export const updateFAQSection = (props: Props) => {
  const { booking } = props;
  const { isPastBooking } = booking;
  const departureTime = getDepartureTimeByType(booking);
  if (isPastBooking !== null && isPastBooking !== undefined) {
    const isUrgent = isUrgentBooking(isPastBooking, departureTime);
    props.onSetFAQSection(isUrgent, isPastBooking);
  }
};