Implement sparse location logging feature and update related services

lib/connector/meshcore_connector.dart

@@ -2,6 +2,8 @@ import 'dart:async';
 import 'dart:convert';
 
 import 'package:crypto/crypto.dart' as crypto;
+import 'package:geolocator_platform_interface/src/models/position.dart';
+import 'package:meshcore_open/services/sparse_location_logger.dart';
 import 'package:pointycastle/export.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter_blue_plus/flutter_blue_plus.dart';
@@ -130,6 +132,7 @@ class MeshCoreConnector extends ChangeNotifier {
   PathHistoryService? _pathHistoryService;
   AppSettingsService? _appSettingsService;
   BackgroundService? _backgroundService;
+  SparseLocationLogger? _sparseLocationLogger;
   final NotificationService _notificationService = NotificationService();
   BleDebugLogService? _bleDebugLogService;
   AppDebugLogService? _appDebugLogService;
@@ -502,6 +505,7 @@ class MeshCoreConnector extends ChangeNotifier {
     BleDebugLogService? bleDebugLogService,
     AppDebugLogService? appDebugLogService,
     BackgroundService? backgroundService,
+    SparseLocationLogger? sparseLocationLogger,
   }) {
     _retryService = retryService;
     _pathHistoryService = pathHistoryService;
@@ -509,11 +513,14 @@ class MeshCoreConnector extends ChangeNotifier {
     _bleDebugLogService = bleDebugLogService;
     _appDebugLogService = appDebugLogService;
     _backgroundService = backgroundService;
+    _sparseLocationLogger = sparseLocationLogger;
 
     // Initialize notification service
     _notificationService.initialize();
     _loadChannelOrder();
 
+    _sparseLocationLogger?.initialize(_updateLocationandAdvert);
+
     // Initialize retry service callbacks
     _retryService?.initialize(
       sendMessageCallback: _sendMessageDirect,
@@ -828,6 +835,8 @@ class MeshCoreConnector extends ChangeNotifier {
     return result;
   }
 
+  SparseLocationLogger? get sparseLocationLogger => _sparseLocationLogger;
+
   bool get _shouldAutoReconnect => !_manualDisconnect && _lastDeviceId != null;
 
   void _cancelReconnectTimer() {
@@ -3285,6 +3294,23 @@ class MeshCoreConnector extends ChangeNotifier {
 
     super.dispose();
   }
+
+  _updateLocationandAdvert(Position position) async {
+    double lat = position.latitude;
+    double lon = position.longitude;
+
+    if (lat == 0.0 && lon == 0.0) {
+      // Invalid location
+      return;
+    }
+    lat = double.parse(lat.toStringAsFixed(3)) - 0.00015;
+    lon = double.parse(lon.toStringAsFixed(3)) - 0.00015;
+    print('Updating location to lat: $lat, lon: $lon');
+    await sendFrame(buildSetOtherParamsFrame(true, 0, 1, 0));
+    await setNodeLocation(lat: lat, lon: lon);
+    await sendSelfAdvert(flood: true);
+    await sendFrame(buildDeviceQueryFrame());
+  }
 }
 
 const int _phRouteMask = 0x03;

lib/connector/meshcore_protocol.dart

@@ -151,6 +151,7 @@ const int cmdGetContactByKey = 30;
 const int cmdGetChannel = 31;
 const int cmdSetChannel = 32;
 const int cmdSendTracePath = 36;
+const int cmdSetOtherParams = 38;
 const int cmdGetRadioSettings = 57;
 const int cmdGetTelemetryReq = 39;
 const int cmdGetCustomVar = 40;
@@ -777,3 +778,22 @@ Uint8List buildZeroHopContact(Uint8List pubKey) {
   writer.writeBytes(pubKey);
   return writer.toBytes();
 }
+
+// Build CMD_SET_OTHER_PARAMS frame
+// Format: [cmd][allowAutoAddContacts][allowTelemetryFlags][advert_loc_policy][multi_acks]
+Uint8List buildSetOtherParamsFrame(
+  bool allowAutoAddContacts,
+  int allowTelemetryFlags,
+  int advert_loc_policy,
+  int multi_acks,
+) {
+  final writer = BufferWriter();
+  writer.writeByte(cmdSetOtherParams);
+  writer.writeByte(
+    allowAutoAddContacts ? 0x01 : 0x00,
+  ); // Allow Auto Add Contacts
+  writer.writeByte(allowTelemetryFlags); // Allow Telemetry Flags
+  writer.writeByte(advert_loc_policy); // Advertisement Location Policy
+  writer.writeByte(multi_acks); // Multi Acknowledgements
+  return writer.toBytes();
+}