import type { Patient } from 'fhir/r4';
import { getEmailVerification, PATIENT_SMS_NUMBER_EXTENSION_URL } from '../config/communicationPreferences';

/**
 * What a contact choice depends on: the number or address chosen on a record, and the ones it was chosen among.
 * A save of a choice is made only while these are as they were when the choice was made; anything else on the
 * record may change meanwhile.
 */

/** The text number chosen on a record, and the phone numbers it was chosen among. */
export const smsSelectionOf = (patient: Patient) => ({
    selected: patient.extension
        ?.find((e) => e.url === PATIENT_SMS_NUMBER_EXTENSION_URL)
        ?.extension?.find((c) => c.url === 'digits')?.valueString ?? null,
    phones: (patient.telecom ?? []).filter((point) => point.system === 'phone'),
});

/**
 * The contact email chosen on a record, and the addresses it was chosen among. `withVerification`: whether it was
 * proved counts too - for a flow that would otherwise write an address over someone else's proof of one.
 */
export const emailSelectionOf = (patient: Patient, { withVerification }: { withVerification: boolean }) => {
    const chosen = getEmailVerification(patient);
    return {
        selected: chosen?.address ?? null,
        ...(withVerification ? { verified: chosen?.verified ?? false } : {}),
        emails: (patient.telecom ?? []).filter((point) => point.system === 'email'),
    };
};