class TimeUtils {
  static String getRelativeTime(String timestamp) {
    final now = DateTime.now();
    final date = DateTime.fromMillisecondsSinceEpoch(
      (double.parse(timestamp) * 1000).round(),
    );
    final difference = now.difference(date);

    if (difference.inSeconds < 60) {
      return '刚刚';
    } else if (difference.inMinutes < 60) {
      return '${difference.inMinutes}分钟前';
    } else if (difference.inHours < 24) {
      return '${difference.inHours}小时前';
    } else if (difference.inDays < 30) {
      return '${difference.inDays}天前';
    } else if (difference.inDays < 365) {
      return '${(difference.inDays / 30).round()}个月前';
    } else {
      return '${(difference.inDays / 365).round()}年前';
    }
  }
}