Huawei: Send OK when starting GPS

I hope this will solve #3990.

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/huawei/packets/GpsAndTime.java

@@ -88,6 +88,21 @@ public class GpsAndTime {
     public static class GpsStatus {
         public static final byte id = 0x02;
 
+        public static class Request extends HuaweiPacket {
+            public Request(ParamsProvider paramsProvider) {
+                super(paramsProvider);
+
+                this.serviceId = GpsAndTime.id;
+                this.commandId = id;
+
+                // Currently only sends "OK" value
+                this.tlv = new HuaweiTLV().put(0x7f, 0x186A0);
+
+                this.isEncrypted = true;
+                this.complete = true;
+            }
+        }
+
         public static class Response extends HuaweiPacket {
             public boolean enableGps;
 

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huawei/AsynchronousResponse.java

@@ -58,6 +58,7 @@ import nodomain.freeyourgadget.gadgetbridge.devices.huawei.packets.Weather;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.huawei.requests.Request;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.huawei.requests.GetPhoneInfoRequest;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.huawei.requests.SendFileUploadComplete;
+import nodomain.freeyourgadget.gadgetbridge.service.devices.huawei.requests.SendGpsStatusRequest;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.huawei.requests.SendMenstrualModifyTimeRequest;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.huawei.requests.SendFileUploadAck;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.huawei.requests.SendFileUploadChunk;
@@ -510,6 +511,15 @@ public class AsynchronousResponse {
                 // TODO: exception?
                 return;
             }
+
+            // Send back OK
+            try {
+                SendGpsStatusRequest sendGpsStatusRequest = new SendGpsStatusRequest(this.support);
+                sendGpsStatusRequest.doPerform();
+            } catch (IOException e) {
+                LOG.error("Could not send back OK");
+            }
+
             support.setGps(((GpsAndTime.GpsStatus.Response) response).enableGps);
         }
     }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huawei/requests/SendGpsStatusRequest.java

@@ -0,0 +1,42 @@
+/*  Copyright (C) 2024 Martin.JM
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.service.devices.huawei.requests;
+
+import java.util.List;
+
+import nodomain.freeyourgadget.gadgetbridge.devices.huawei.HuaweiPacket;
+import nodomain.freeyourgadget.gadgetbridge.devices.huawei.packets.GpsAndTime;
+import nodomain.freeyourgadget.gadgetbridge.service.devices.huawei.HuaweiSupportProvider;
+
+public class SendGpsStatusRequest extends Request {
+
+    public SendGpsStatusRequest(HuaweiSupportProvider support) {
+        super(support);
+        this.serviceId = GpsAndTime.id;
+        this.commandId = GpsAndTime.GpsStatus.id;
+        this.addToResponse = false;
+    }
+
+    @Override
+    protected List<byte[]> createRequest() throws RequestCreationException {
+        try {
+            return new GpsAndTime.GpsStatus.Request(this.paramsProvider).serialize();
+        } catch (HuaweiPacket.CryptoException e) {
+            throw new RequestCreationException(e);
+        }
+    }
+}