Amazfit GTR/S 3: Enable AGPS Updates

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/huami/Huami2021Coordinator.java

@@ -465,6 +465,10 @@ public abstract class Huami2021Coordinator extends HuamiCoordinator {
         return false;
     }
 
+    public boolean sendAgpsAsFileTransfer() {
+        return true;
+    }
+
     public boolean supportsGpxUploads() {
         return false;
     }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/huami/amazfitgtr3/AmazfitGTR3Coordinator.java

@@ -61,6 +61,16 @@ public class AmazfitGTR3Coordinator extends Huami2021Coordinator {
         return new AmazfitGTR3FWInstallHandler(uri, context);
     }
 
+    @Override
+    public boolean supportsAgpsUpdates() {
+        return true;
+    }
+
+    @Override
+    public boolean sendAgpsAsFileTransfer() {
+        return false;
+    }
+
     @Override
     public boolean supportsBluetoothPhoneCalls(final GBDevice device) {
         return false;

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/huami/amazfitgts3/AmazfitGTS3Coordinator.java

@@ -61,6 +61,16 @@ public class AmazfitGTS3Coordinator extends Huami2021Coordinator {
         return new AmazfitGTS3FWInstallHandler(uri, context);
     }
 
+    @Override
+    public boolean supportsAgpsUpdates() {
+        return true;
+    }
+
+    @Override
+    public boolean sendAgpsAsFileTransfer() {
+        return false;
+    }
+
     @Override
     public boolean supportsBluetoothPhoneCalls(final GBDevice device) {
         return false;

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huami/Huami2021FirmwareInfo.java

@@ -33,6 +33,7 @@ import java.io.IOException;
 import java.lang.reflect.Constructor;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
+import java.util.HashSet;
 import java.util.Set;
 import java.util.UUID;
 
@@ -84,6 +85,7 @@ public abstract class Huami2021FirmwareInfo extends AbstractHuamiFirmwareInfo {
             return HuamiFirmwareType.INVALID;
         }
 
+        final Set<UIHHContainer.FileType> agpsEpoTypes = new HashSet<>();
         UIHHContainer.FileEntry uihhFirmwareZipFile = null;
         boolean hasChangelog = false;
         for (final UIHHContainer.FileEntry file : uihh.getFiles()) {
@@ -94,12 +96,18 @@ public abstract class Huami2021FirmwareInfo extends AbstractHuamiFirmwareInfo {
                 case FIRMWARE_CHANGELOG:
                     hasChangelog = true;
                     continue;
+                case AGPS_EPO_GR_3:
+                case AGPS_EPO_GAL_7:
+                case AGPS_EPO_BDS_3:
+                    agpsEpoTypes.add(file.getType());
+                    continue;
                 default:
                     LOG.warn("Unexpected file for {}", file.getType());
             }
         }
 
         if (uihhFirmwareZipFile != null && hasChangelog) {
+            // UIHH firmware update
             final ZipFile zipFile = new ZipFile(uihhFirmwareZipFile.getContent());
             final byte[] firmwareBin;
             try {
@@ -114,6 +122,11 @@ public abstract class Huami2021FirmwareInfo extends AbstractHuamiFirmwareInfo {
             }
         }
 
+        if (agpsEpoTypes.size() == 3) {
+            // AGPS EPO update
+            return HuamiFirmwareType.AGPS_UIHH;
+        }
+
         return HuamiFirmwareType.INVALID;
     }
 

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/huami/Huami2021Support.java

@@ -94,6 +94,7 @@ import nodomain.freeyourgadget.gadgetbridge.model.MusicStateSpec;
 import nodomain.freeyourgadget.gadgetbridge.model.NotificationSpec;
 import nodomain.freeyourgadget.gadgetbridge.model.Reminder;
 import nodomain.freeyourgadget.gadgetbridge.model.WeatherSpec;
+import nodomain.freeyourgadget.gadgetbridge.service.btle.AbstractBTLEOperation;
 import nodomain.freeyourgadget.gadgetbridge.service.btle.BLETypeConversions;
 import nodomain.freeyourgadget.gadgetbridge.service.btle.GattCharacteristic;
 import nodomain.freeyourgadget.gadgetbridge.service.btle.TransactionBuilder;
@@ -581,13 +582,34 @@ public abstract class Huami2021Support extends HuamiSupport implements ZeppOsFil
         final ZeppOsAgpsInstallHandler agpsHandler = new ZeppOsAgpsInstallHandler(uri, getContext());
         if (agpsHandler.isValid()) {
             try {
-                new ZeppOsAgpsUpdateOperation(
+                if (getCoordinator().sendAgpsAsFileTransfer()) {
-                        this,
+                    LOG.info("Sending AGPS as file transfer");
-                        agpsHandler.getFile(),
+                    new ZeppOsAgpsUpdateOperation(
-                        agpsService,
+                            this,
-                        fileTransferService,
+                            agpsHandler.getFile(),
-                        configService
+                            agpsService,
-                ).perform();
+                            fileTransferService,
+                            configService
+                    ).perform();
+                } else {
+                    LOG.info("Sending AGPS as firmware update");
+
+                    // Write the agps epo update to a temporary file in cache, so we can reuse the firmware update operation
+                    final File cacheDir = getContext().getCacheDir();
+                    final File agpsCacheDir = new File(cacheDir, "zepp-os-agps");
+                    agpsCacheDir.mkdir();
+                    final File uihhFile = new File(agpsCacheDir, "epo-agps.uihh");
+
+                    try (FileOutputStream outputStream = new FileOutputStream(uihhFile)) {
+                        outputStream.write(agpsHandler.getFile().getUihhBytes());
+                    } catch (final IOException e) {
+                        LOG.error("Failed to write agps bytes to temporary uihhFile", e);
+                        return;
+                    }
+
+                    new UpdateFirmwareOperation2021(Uri.parse(uihhFile.toURI().toString()), this).perform();
+                }
+
             } catch (final Exception e) {
                 GB.toast(getContext(), "AGPS file cannot be installed: " + e.getMessage(), Toast.LENGTH_LONG, GB.ERROR, e);
             }