mchess-client/lib/api/websocket_message.dart

import 'package:mchess/api/move.dart';

enum MessageType {
  move,
  colorDetermined;

  String toJson() => name;
  static MessageType fromJson(String json) => values.byName(json);
}

enum ApiColor {
  black,
  white;

  String toJson() => name;
  static ApiColor fromJson(String json) => values.byName(json);
}

class ApiWebsocketMessage {
  final MessageType type;
  final ApiMove? move;
  final ApiColor? color;

  ApiWebsocketMessage(
      {required this.type, required this.move, required this.color});

  factory ApiWebsocketMessage.fromJson(Map<String, dynamic> json) {
    final type = MessageType.fromJson(json['messageType']);
    ApiWebsocketMessage ret;
    switch (type) {
      case MessageType.colorDetermined:
        ret = ApiWebsocketMessage(
            type: type, move: null, color: ApiColor.fromJson(json['color']));
        break;
      case MessageType.move:
        ret = ApiWebsocketMessage(
            type: type, move: ApiMove.fromJson(json['move']), color: null);
    }
    return ret;
  }

  Map<String, dynamic> toJson() =>
      {'messageType': type, 'move': move, 'color': color};
}