const durationToHumanReadable = (duration) => {
    if (!duration) return 'N/A';

    let parts = [];

    let years = duration.years();
    let months = duration.months();
    let days = duration.days();
    let hours = duration.hours();
    let minutes = duration.minutes();
    let seconds = duration.seconds();

    if (years) parts.push(years + ' year' + (years > 1 ? 's' : ''));
    if (months) parts.push(months + ' month' + (months > 1 ? 's' : ''));
    if (days) parts.push(days + ' day' + (days > 1 ? 's' : ''));
    if (hours) parts.push(hours + ' hour' + (hours > 1 ? 's' : ''));
    if (minutes) parts.push(minutes + ' minute' + (minutes > 1 ? 's' : ''));
    if (!minutes && !hours && !days && !months && !years && seconds) parts.push(seconds + ' second' + (seconds > 1 ? 's' : ''));

    return parts.join(', ');
}
module.exports = durationToHumanReadable;