/// Event received from bridge WebSocket
class BridgeEvent {
  final String serverId;
  final DateTime timestamp;
  final String action;
  final Map<String, dynamic> params;

  BridgeEvent({
    required this.serverId,
    required this.timestamp,
    required this.action,
    required this.params,
  });

  factory BridgeEvent.fromJson(Map<String, dynamic> json, String serverId) {
    return BridgeEvent(
      serverId: serverId,
      timestamp: json['timestamp'] != null
          ? DateTime.parse(json['timestamp'] as String)
          : DateTime.now(),
      action: json['action'] as String? ?? '',
      params: json['params'] as Map<String, dynamic>? ?? {},
    );
  }

  // Specific event type checks
  bool get isViewerConnected => action == 'ViewerConnected';
  bool get isViewerCleared => action == 'ViewerCleared';
  bool get isViewerSelectionChanged => action == 'ViewerSelectionChanged';
  bool get isEventStarted => action == 'EventStarted';
  bool get isEventStopped => action == 'EventStopped';
  bool get isDigitalInput => action == 'DigitalInput';
  bool get isAlarmQueueNotification => action == 'VCAlarmQueueNotification';
  bool get isConnectionLost => action == 'ConnectionLost';

  // Viewer events
  int? get viewer => params['Viewer'] as int?;
  int? get channel => params['Channel'] as int?;
  int? get playMode => params['PlayMode'] as int?;

  // Alarm events
  int? get eventId => params['EventID'] as int?;
  String? get eventName => params['EventName'] as String?;
  int? get typeId => params['TypeID'] as int?;
  int? get foreignKey {
    final fk = params['ForeignKey'];
    if (fk is int) return fk;
    if (fk is String) return int.tryParse(fk);
    return null;
  }

  // Digital input
  int? get contact => params['Contact'] as int?;
  int? get state => params['State'] as int?;

  // Alarm queue notification
  int? get notification => params['Notification'] as int?;
  int? get alarmId => params['AlarmID'] as int?;

  @override
  String toString() {
    return 'BridgeEvent($action from $serverId at $timestamp)';
  }
}