/**
 * Whether finding no visit proves none is booked. Only a complete answer for this patient does: an
 * unanswered, failed or cut-off read knows nothing, and a helper's read can have sensitive visits withheld.
 */
export const visitListProvesNoneBooked = (
    read: { answered?: boolean; error?: unknown; incomplete?: boolean; listIsThisPatients?: boolean },
    readerIsHelper: boolean
): boolean =>
    !readerIsHelper && Boolean(read.answered) && !read.error && !read.incomplete && Boolean(read.listIsThisPatients);

/**
 * Whether this session reads for someone else: a helper by role, or a signed-in patient acting for the person they
 * help, whose role stays Patient while the subject changes.
 */
export const readsForAnother = (auth: {
    userRole?: string | null;
    USER_ROLES?: { RELATED_PERSON?: string };
    actingAs?: unknown;
}): boolean =>
    Boolean(auth.actingAs) || (Boolean(auth.userRole) && auth.userRole === auth.USER_ROLES?.RELATED_PERSON);