class NotificationMessage {
  String? notificationType;
  String? title;
  String? body;
  String? id;
  String? type;
  String? link;
  String? image;
  String? photo;
  String? groupKey;
  String? userId;

  NotificationMessage({
    this.notificationType,
    this.title,
    this.body,
    this.id,
    this.type,
    this.link,
    this.image,
    this.photo,
    this.groupKey,
    this.userId,
  });

  NotificationMessage.fromJson(Map<String, dynamic> json) {
    notificationType = json['notificationType'];
    title = json['title'];
    body = json['body'];
    id = json['id'];
    type = json['type'];
    link = json['link'];
    image = json['image'];
    photo = json['photo'];
    groupKey = json['groupKey'];
    userId = json['userId'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = <String, dynamic>{};
    data['notificationType'] = notificationType;
    data['title'] = title;
    data['body'] = body;
    data['id'] = id;
    data['type'] = type;
    data['link'] = link;
    data['image'] = image;
    data['photo'] = photo;
    data['groupKey'] = groupKey;
    data['userId'] = userId;
    return data;
  }

  Map<String, String> toPayload() {
    final Map<String, String> data = <String, String>{};
    data['notificationType'] = notificationType ?? '';
    data['title'] = title ?? '';
    data['body'] = body ?? '';
    data['id'] = id ?? '';
    data['type'] = type ?? '';
    data['link'] = link ?? '';
    data['image'] = image ?? '';
    data['photo'] = photo ?? '';
    data['userId'] = userId ?? '';
    return data;
  }
}