import type { FamilyMemberHistory } from 'fhir/r4';
import { formatDate } from './dateUtils';

/** The birth or age part of a family member row title; empty when neither is recorded. */
export const getBirthSuffix = (familyMemberHistory: FamilyMemberHistory): string => {
    if (!familyMemberHistory) return '';

    if (familyMemberHistory.bornDate) {
        return ` [Born: ${formatDate(familyMemberHistory.bornDate)}]`;
    }

    if (familyMemberHistory.ageAge) {
        return ` [Age: ${familyMemberHistory.ageAge.value} ${familyMemberHistory.ageAge.unit}]`;
    }

    if (familyMemberHistory.ageRange) {
        const low = familyMemberHistory.ageRange?.low?.value;
        const high = familyMemberHistory.ageRange?.high?.value;
        const unit = familyMemberHistory.ageRange?.low?.unit || familyMemberHistory.ageRange?.high?.unit || 'years';

        if (low && high) {
            return ` [Age between ${low}-${high} ${unit}]`;
        } else if (low) {
            return ` [Age at least ${low} ${unit}]`;
        } else if (high) {
            return ` [Age up to ${high} ${unit}]`;
        }
    }

    return '';
};