import type { Appointment } from 'fhir/r4';

/** The line across the top of a past visit's details: what actually happened to it. */
export const pastAppointmentBand = (status: Appointment['status'] | undefined): string => {
    switch (status) {
        case 'cancelled':
            return 'Appointment cancelled';
        case 'noshow':
            return 'Missed appointment';
        case 'fulfilled':
        case 'arrived':
        case 'checked-in':
            return 'Appointment completed';
        default:
            return 'Past appointment';
    }
};

/** The patient's own words for why they booked, when they gave any. */
export const bookingReasonOf = (appointment: Appointment): string | undefined =>
    appointment.reasonCode?.map((reason) => reason.text?.trim()).find((text): text is string => Boolean(text));