class PageResult<T> {
  final List<T> data;
  final int total;
  final int page;
  final int pageSize;

  const PageResult({
    required this.data,
    required this.total,
    required this.page,
    required this.pageSize,
  });

  factory PageResult.fromJson(
    Map<String, dynamic> json,
    T Function(Map<String, dynamic>) fromJson,
  ) {
    return PageResult(
      data: ((json['data'] as List?) ?? [])
          .map((e) => fromJson(e as Map<String, dynamic>))
          .toList(),
      total: json['total'] as int,
      page: json['page'] as int,
      pageSize: json['page_size'] as int,
    );
  }
}