class TourFile {
  late int index;
  late String name;
  String? remark;
  late String url;

  TourFile();

  factory TourFile.fromJson(Map<String, dynamic> json) {
    final file = TourFile();
    file.index = json['index'] as int;
    file.name = json['name'] as String;
    file.remark = json['remark'] as String?;
    file.url = json['url'] as String;
    return file;
  }

  Map<String, dynamic> toJson() {
    return {
      'index': index,
      'name': name,
      'remark': remark,
      'url': url,
    };
  }

  bool get isPdf {
    return name.toLowerCase().endsWith('.pdf');
  }

  bool get isImage {
    final ext = name.toLowerCase();
    return ext.endsWith('.jpg') ||
        ext.endsWith('.jpeg') ||
        ext.endsWith('.png') ||
        ext.endsWith('.gif') ||
        ext.endsWith('.webp');
  }
}