/*
 * Copyright (C) 2026 Fluxer Contributors
 *
 * This file is part of Fluxer.
 *
 * Fluxer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Fluxer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
 */

import {DateTime} from 'luxon';

export function formatShortRelativeTime(timestamp: number): string {
	const date = DateTime.fromMillis(timestamp);
	const now = DateTime.now();
	const diff = now.diff(date);

	const minutes = diff.as('minutes');
	const hours = diff.as('hours');
	const days = diff.as('days');
	const weeks = diff.as('weeks');
	const months = diff.as('months');
	const years = diff.as('years');

	if (minutes < 1) {
		return '1m';
	}
	if (minutes < 60) {
		return `${Math.floor(minutes)}m`;
	}
	if (hours < 24) {
		return `${Math.floor(hours)}h`;
	}
	if (days < 7) {
		return `${Math.floor(days)}d`;
	}
	if (weeks < 4) {
		return `${Math.floor(weeks)}w`;
	}
	if (months < 12) {
		return `${Math.floor(months)}mo`;
	}
	return `${Math.floor(years)}y`;
}