import 'package:flutter/material.dart';
import 'package:location/location.dart';
import 'package:gps/models/gps_point.dart';
import 'package:gps/utils/gps_persister.dart';

class GpsModel with ChangeNotifier {
  bool _recording = false;
  GpsPoint _currentLocation = GpsPoint();
  List<GpsPoint> _recordedLocations = [];

  bool get isRecording => _recording;
  GpsPoint get currentLocation => _currentLocation;
  List<GpsPoint> get locations => List.unmodifiable(_recordedLocations);

  GpsModel(Stream<LocationData> stream) {
    stream.listen((event) {
      _currentLocation = GpsPoint(
          latitude: event.latitude ?? 0.0,
          longitude: event.longitude ?? 0.0,
          accuracy: event.accuracy ?? 0.0,
          speed: event.speed ?? 0.0,
          heading: event.heading ?? 0.0,
          time: event.time ?? 0.0,
          satelliteNumber: event.satelliteNumber ?? 0,
          provider: event.provider ?? "none");

      if (_recording) {
        _recordedLocations.add(_currentLocation);
      }

      notifyListeners();
    });
  }

  void toggleRecording() {
    _recording = !_recording;
    notifyListeners();
  }

  void save(GpsPersister s) {
    s.save(locations);
    _recordedLocations = [];
  }
}