import 'package:json_annotation/json_annotation.dart';

part 'push_message.g.dart';

/// 推送消息模型
@JsonSerializable(createFactory: false)
class PushMessage {
  final String? title;
  
  final String? content;
  
  @JsonKey(defaultValue: {})
  final Map<String, dynamic> extras;

  PushMessage({
    this.title,
    this.content,
    required this.extras,
  });

  /// 从 JSON 创建 PushMessage
  /// 支持 'alert' 或 'content' 字段作为内容
  factory PushMessage.fromJson(Map<String, dynamic> json) {
    // 处理 content 字段：优先使用 'alert'，如果没有则使用 'content'
    final content = json['alert'] ?? json['content'];
    
    return PushMessage(
      title: json['title'] as String?,
      content: content as String?,
      extras: json['extras'] != null
          ? Map<String, dynamic>.from(json['extras'] as Map)
          : <String, dynamic>{},
    );
  }

  /// 转换为 JSON
  Map<String, dynamic> toJson() => _$PushMessageToJson(this);
}