Fossil HR: new alarm file format

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/qhybrid/requests/fossil/alarm/AlarmsSetRequest.java

@@ -17,18 +17,70 @@
 package nodomain.freeyourgadget.gadgetbridge.service.devices.qhybrid.requests.fossil.alarm;
 
 import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
+import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.qhybrid.adapter.fossil.FossilWatchAdapter;
 import nodomain.freeyourgadget.gadgetbridge.service.devices.qhybrid.requests.fossil.file.FilePutRequest;
+import nodomain.freeyourgadget.gadgetbridge.util.Version;
 
 public class AlarmsSetRequest extends FilePutRequest {
     public AlarmsSetRequest(Alarm[] alarms, FossilWatchAdapter adapter) {
-        super((short) 0x0A00, createFileFromAlarms(alarms), adapter);
+        super((short) 0x0A00, createFileFromAlarms(alarms, isNewFormat(adapter)), isNewFormat(adapter) ? (short) 3 : (short) 2, adapter); // TODO version 3
     }
 
-    static byte[] createFileFromAlarms(Alarm[] alarms){
+    static private boolean isNewFormat(FossilWatchAdapter adapter) {
-        ByteBuffer buffer = ByteBuffer.allocate(alarms.length * 3);
+        GBDevice device = adapter.getDeviceSupport().getDevice();
-        for(Alarm alarm : alarms) buffer.put(alarm.getData());
+        String firmware = device.getFirmwareVersion();
+
+        Version newFormatVersion = new Version("1.0.2.17");
+        Pattern versionPattern = Pattern.compile("([0-9]+)\\.([0-9]+)\\.([0-9]+)\\.([0-9]+)");
+        Matcher matcher = versionPattern.matcher(firmware);
+        matcher.find();
+        String thisVersion = matcher.group(0);
+
+        int result = newFormatVersion.compareTo(new Version(thisVersion));
+
+        return result != 1;
+    }
+
+    static public byte[] createFileFromAlarms(Alarm[] alarms, boolean newFormat) {
+        ByteBuffer buffer;
+        if (!newFormat) {
+            buffer = ByteBuffer.allocate(alarms.length * 3);
+            for (Alarm alarm : alarms) buffer.put(alarm.getData());
+        } else {
+            String label = "Brr Brr";
+            String message = "I am an alarm";
+
+            label = label.substring(0, Math.min(label.length(), 15));
+            message = message.substring(0, Math.min(message.length(), 50));
+
+            int SIZE_ALARM = 17 + label.length() + message.length();
+            int sizeAll = alarms.length * SIZE_ALARM;
+            buffer = ByteBuffer.allocate(sizeAll); // 4 for overall length
+            buffer.order(ByteOrder.LITTLE_ENDIAN);
+
+            for (Alarm alarm : alarms) {
+                buffer.put((byte) 0x00); // dunno why
+                buffer.putShort((short) (SIZE_ALARM - 3)); // alarm size, 0 above does not count
+                buffer.put((byte) 0x00); // prolly entry id time data
+                buffer.putShort((short) 3); // prolly entry length
+                buffer.put(alarm.getData());
+
+                buffer.put((byte) 0x01); // another entry id label
+                buffer.putShort((short) (label.length() + 1));  // entry length
+                buffer.put(label.getBytes());
+                buffer.put((byte) 0x00); // null terminator
+
+                buffer.put((byte) 0x02); // entry id subtext
+                buffer.putShort((short) (message.length() + 1)); // entry length
+                buffer.put(message.getBytes());
+                buffer.put((byte) 0x00); // null terminator
+            }
+        }
 
         return buffer.array();
     }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/qhybrid/requests/fossil/file/FilePutRequest.java

@@ -37,7 +37,7 @@ public class FilePutRequest extends FossilRequest {
 
     private ArrayList<byte[]> packets = new ArrayList<>();
 
-    private short handle;
+    private short handle, fileVersion;
 
     private FossilWatchAdapter adapter;
 
@@ -45,9 +45,10 @@ public class FilePutRequest extends FossilRequest {
 
     private int fullCRC;
 
-    public FilePutRequest(short handle, byte[] file, FossilWatchAdapter adapter) {
+    public FilePutRequest(short handle, byte[] file, short fileVersion, FossilWatchAdapter adapter) {
         this.handle = handle;
         this.adapter = adapter;
+        this.fileVersion = fileVersion;
 
         int fileLength = file.length + 16;
         ByteBuffer buffer = this.createBuffer();
@@ -63,6 +64,10 @@ public class FilePutRequest extends FossilRequest {
         state = UploadState.INITIALIZED;
     }
 
+    public FilePutRequest(short handle, byte[] file, FossilWatchAdapter adapter) {
+        this(handle, file, (short) 2, adapter);
+    }
+
     public short getHandle() {
         return handle;
     }
@@ -83,7 +88,7 @@ public class FilePutRequest extends FossilRequest {
                     TransactionBuilder transactionBuilder = new TransactionBuilder("file upload");
                     BluetoothGattCharacteristic uploadCharacteristic = adapter.getDeviceSupport().getCharacteristic(UUID.fromString("3dda0004-957f-7d4a-34a6-74696673696d"));
 
-                    this.prepareFilePackets(this.file);
+                    this.prepareFilePackets(this.file, this.fileVersion);
 
                     for (byte[] packet : packets) {
                         transactionBuilder.write(uploadCharacteristic, packet);
@@ -188,15 +193,14 @@ public class FilePutRequest extends FossilRequest {
         return this.state == UploadState.UPLOADED;
     }
 
-    private void prepareFilePackets(byte[] file) {
+    private void prepareFilePackets(byte[] file, short fileVersion) {
         int maxPacketSize = adapter.getMTU() - 4;
 
         ByteBuffer buffer = ByteBuffer.allocate(file.length + 12 + 4);
         buffer.order(ByteOrder.LITTLE_ENDIAN);
 
         buffer.putShort(handle);
-        buffer.put((byte) 2);
+        buffer.putShort(fileVersion);
-        buffer.put((byte) 0);
         buffer.putInt(0);
         buffer.putInt(file.length);