import 'package:flutter/foundation.dart';

import 'uploader.dart';

enum RegistrationState { idle, registering, success, failed }

/// Live aircraft/session state, shared by the Go Fly launch screen and the
/// Flight Control overlay. [_HomePageState] owns the DJI/uploader plumbing and
/// pushes updates here; the screens observe it via [AnimatedBuilder].
class FlightModel extends ChangeNotifier {
  String sdkVersion = '…';
  RegistrationState registration = RegistrationState.idle;
  String? registrationError;

  bool connected = false;
  String? model;

  int? satellites;
  bool? isFlying;
  String? flightMode;
  double? altitude;
  double? latitude;
  double? longitude;
  // Phone's own GPS (independent of the drone's fix above); streamed to the
  // server as a location fallback for the Web App's automatic bounding box.
  double? phoneLatitude;
  double? phoneLongitude;
  int? batteryPercent;

  UploadStatus upload = UploadStatus.disabled;

  bool get registered => registration == RegistrationState.success;

  /// Notify observers after a batch of field writes.
  void bump() => notifyListeners();
}