location_service.dart

import 'dart:async';
import 'package:app/src/models/packet_model.dart';
import 'package:firebase_auth/firebase_auth.dart';
import 'package:location/location.dart';
import 'package:http/http.dart' as http;

class LocationService {
  static const period = Duration(seconds: 60); // 1 minute
  Location location = Location(); // initializing location package

  void initService() async {
    // initializing location service and checking permissions
    getLocationEnabled();
    getLocationPermission();
    startLocationService();
  }

  void getLocationEnabled() async {
    // checking if location is enabled on the device
    bool _serviceEnabled = await location.serviceEnabled();
    if (!_serviceEnabled) {
      _serviceEnabled =
          await location.requestService(); // if not, request location service
      if (!_serviceEnabled) {
        return; // if still not enabled, return
      }
    }
  }

  void getLocationPermission() async {
    var permissionGranted = await location
        .hasPermission(); // checking if location permission is granted
    if (permissionGranted == PermissionStatus.denied) {
      permissionGranted = await location
          .requestPermission(); // if not, request location permission
      if (permissionGranted != PermissionStatus.granted) {
        return; // if still not granted, return
      }
    }
  }

  Future<LocationData?> getLocation() async {
    var currentLocation =
        await location.getLocation(); // getting current location
    PacketModel packet = PacketModel(
      // creating packet model
      latitude: currentLocation.latitude,
      longitude: currentLocation.longitude,
      userId: FirebaseAuth
          .instance.currentUser!.uid, // getting current user id from firebase
    );
    final response = await http.post(
        // sending packet to server
        Uri.parse("http:8080/api/v1/recieve-packet"),
        body: packet.toJson());
  }

  void startLocationService() {
    // starting location service
    Timer.periodic(period, (timer) {
      getLocation(); // getting location every minute
      print("Runs after each 10 seconds"); // printing to console
    });
  }
}