Send notification when low OMI battery

app/lib/backend/http/api/hardware.dart

@@ -0,0 +1,24 @@
+import 'dart:convert';
+import 'dart:ffi';
+
+import 'package:flutter/material.dart';
+import 'package:friend_private/backend/http/shared.dart';
+import 'package:friend_private/env/env.dart';
+
+Future<void> saveFcmTokenServer(
+    {required String token, required String timeZone}) async {
+  var response = await makeApiCall(
+    url: '${Env.apiBaseUrl}v1/firmware/battery-alert',
+    headers: {'Content-Type': 'application/json'},
+    method: 'POST',
+    body: jsonEncode({'fcm_token': token, 'time_zone': timeZone}),
+  );
+
+  debugPrint('saveToken: ${response?.body}');
+  if (response?.statusCode == 200) {
+    debugPrint("Token saved successfully");
+  } else {
+    debugPrint("Failed to save token");
+  }
+}
+

app/lib/providers/device_provider.dart

@@ -10,7 +10,10 @@ import 'package:friend_private/services/services.dart';
 import 'package:friend_private/utils/analytics/mixpanel.dart';
 import 'package:instabug_flutter/instabug_flutter.dart';
 
-class DeviceProvider extends ChangeNotifier implements IDeviceServiceSubsciption {
+class DeviceProvider extends ChangeNotifier
+    implements IDeviceServiceSubsciption {
+
+
   CaptureProvider? captureProvider;
 
   bool isConnecting = false;
@@ -22,6 +25,7 @@ class DeviceProvider extends ChangeNotifier implements IDeviceServiceSubsciption
   int batteryLevel = -1;
   Timer? _reconnectionTimer;
   int connectionCheckSeconds = 4;
+  bool lowBatteryNotified = false;
 
   Timer? _disconnectNotificationTimer;
 
@@ -44,10 +48,13 @@ class DeviceProvider extends ChangeNotifier implements IDeviceServiceSubsciption
 
   Future getDeviceInfo() async {
     if (connectedDevice != null) {
-      if (pairedDevice?.firmwareRevision != null && pairedDevice?.firmwareRevision != 'Unknown') {
+      if (pairedDevice?.firmwareRevision != null &&
+          pairedDevice?.firmwareRevision != 'Unknown') {
         return;
       }
-      var connection = await ServiceManager.instance().device.ensureConnection(connectedDevice!.id);
+      var connection = await ServiceManager.instance()
+          .device
+          .ensureConnection(connectedDevice!.id);
       pairedDevice = await connectedDevice!.getDeviceInfo(connection);
       SharedPreferencesUtil().btDevice = pairedDevice!;
     } else {
@@ -66,16 +73,19 @@ class DeviceProvider extends ChangeNotifier implements IDeviceServiceSubsciption
     void Function(int)? onBatteryLevelChange,
   }) async {
     {
-      var connection = await ServiceManager.instance().device.ensureConnection(deviceId);
+      var connection =
+          await ServiceManager.instance().device.ensureConnection(deviceId);
       if (connection == null) {
         return Future.value(null);
       }
-      return connection.getBleBatteryLevelListener(onBatteryLevelChange: onBatteryLevelChange);
+      return connection.getBleBatteryLevelListener(
+          onBatteryLevelChange: onBatteryLevelChange);
     }
   }
 
   Future<List<int>> _getStorageList(String deviceId) async {
-    var connection = await ServiceManager.instance().device.ensureConnection(deviceId);
+    var connection =
+        await ServiceManager.instance().device.ensureConnection(deviceId);
     if (connection == null) {
       return [];
     }
@@ -87,7 +97,8 @@ class DeviceProvider extends ChangeNotifier implements IDeviceServiceSubsciption
     if (deviceId.isEmpty) {
       return null;
     }
-    var connection = await ServiceManager.instance().device.ensureConnection(deviceId);
+    var connection =
+        await ServiceManager.instance().device.ensureConnection(deviceId);
     return connection?.device;
   }
 
@@ -98,6 +109,21 @@ class DeviceProvider extends ChangeNotifier implements IDeviceServiceSubsciption
       connectedDevice!.id,
       onBatteryLevelChange: (int value) {
         batteryLevel = value;
+
+        if (batteryLevel < 20) {
+          if (!lowBatteryNotified) {
+            NotificationService.instance.createNotification(
+              title: 'Charge your OMI necklace🪫!',
+              body: 'Your OMI necklace is running low on battery. Please charge it to avoid any interruptions.',
+            );
+            lowBatteryNotified = true;
+          }
+        } else {
+          // Reset flag when battery charges above 20%
+          lowBatteryNotified = false;
+        }
+
+        notifyListeners();
       },
     );
     notifyListeners();
@@ -106,7 +132,8 @@ class DeviceProvider extends ChangeNotifier implements IDeviceServiceSubsciption
   Future periodicConnect(String printer) async {
     debugPrint("period connect");
     _reconnectionTimer?.cancel();
-    _reconnectionTimer = Timer.periodic(Duration(seconds: connectionCheckSeconds), (t) async {
+    _reconnectionTimer =
+        Timer.periodic(Duration(seconds: connectionCheckSeconds), (t) async {
       debugPrint("period connect...");
       print(printer);
       print('seconds: $connectionCheckSeconds');
@@ -115,7 +142,8 @@ class DeviceProvider extends ChangeNotifier implements IDeviceServiceSubsciption
       if (SharedPreferencesUtil().btDevice.id.isEmpty) {
         return;
       }
-      print("isConnected: $isConnected, isConnecting: $isConnecting, connectedDevice: $connectedDevice");
+      print(
+          "isConnected: $isConnected, isConnecting: $isConnecting, connectedDevice: $connectedDevice");
       if ((!isConnected && connectedDevice == null)) {
         if (isConnecting) {
           return;
@@ -127,7 +155,8 @@ class DeviceProvider extends ChangeNotifier implements IDeviceServiceSubsciption
     });
   }
 
-  Future<BtDevice?> _scanAndConnectDevice({bool autoConnect = true, bool timeout = false}) async {
+  Future<BtDevice?> _scanAndConnectDevice(
+      {bool autoConnect = true, bool timeout = false}) async {
     var device = await _getConnectedDevice();
     if (device != null) {
       return device;
@@ -136,7 +165,9 @@ class DeviceProvider extends ChangeNotifier implements IDeviceServiceSubsciption
     int timeoutCounter = 0;
     while (true) {
       if (timeout && timeoutCounter >= 10) return null;
-      await ServiceManager.instance().device.discover(desirableDeviceId: SharedPreferencesUtil().btDevice.id);
+      await ServiceManager.instance()
+          .device
+          .discover(desirableDeviceId: SharedPreferencesUtil().btDevice.id);
       if (connectedDevice != null) {
         return connectedDevice;
       }
@@ -270,11 +301,14 @@ class DeviceProvider extends ChangeNotifier implements IDeviceServiceSubsciption
   }
 
   @override
-  void onDeviceConnectionStateChanged(String deviceId, DeviceConnectionState state) async {
-    debugPrint("provider > device connection state changed...${deviceId}...${state}...${connectedDevice?.id}");
+  void onDeviceConnectionStateChanged(
+      String deviceId, DeviceConnectionState state) async {
+    debugPrint(
+        "provider > device connection state changed...${deviceId}...${state}...${connectedDevice?.id}");
     switch (state) {
       case DeviceConnectionState.connected:
-        var connection = await ServiceManager.instance().device.ensureConnection(deviceId);
+        var connection =
+            await ServiceManager.instance().device.ensureConnection(deviceId);
         if (connection == null) {
           return;
         }
@@ -294,4 +328,4 @@ class DeviceProvider extends ChangeNotifier implements IDeviceServiceSubsciption
 
   @override
   void onStatusChanged(DeviceServiceStatus status) {}
-}
+}

backend/routers/firmware.py

@@ -4,6 +4,9 @@
 import httpx
 from fastapi import APIRouter, HTTPException
 
+from utils.notifications import send_notification
+from database.notifications import get_token_only
+
 router = APIRouter()
 
 
@@ -69,6 +72,7 @@ async def get_latest_version(device: int):
         }
 
 
+
 def extract_key_value_pairs(markdown_content):
     key_value_pattern = re.compile(r'<!-- KEY_VALUE_START\s*(.*?)\s*KEY_VALUE_END -->', re.DOTALL)
     key_value_match = key_value_pattern.search(markdown_content)
@@ -88,3 +92,8 @@ def extract_key_value_pairs(markdown_content):
             key_value_map[key] = value
 
     return key_value_map
+
+
+
+
+