/**
 * @license
 * Copyright 2025 Qwen Team
 * SPDX-License-Identifier: Apache-2.0
 */

/**
 * Time ago formatter (matching Claude Code)
 *
 * @param timestamp - ISO timestamp string
 * @returns Formatted time string
 */
export const getTimeAgo = (timestamp: string): string => {
  if (!timestamp) {
    return '';
  }
  const now = new Date().getTime();
  const then = new Date(timestamp).getTime();
  const diffMs = now - then;
  const diffMins = Math.floor(diffMs / 60000);
  const diffHours = Math.floor(diffMs / 3600000);
  const diffDays = Math.floor(diffMs / 86400000);

  if (diffMins < 1) {
    return 'now';
  }
  if (diffMins < 60) {
    return `${diffMins}m`;
  }
  if (diffHours < 24) {
    return `${diffHours}h`;
  }
  if (diffDays === 1) {
    return 'Yesterday';
  }
  if (diffDays < 7) {
    return `${diffDays}d`;
  }
  return new Date(timestamp).toLocaleDateString();
};