fix: handle uint64_t values

Author: ahmad-kemsan

src/main/java/com/cryptlex/lexfloatclient/HostLicenseMeterAttribute.java

@@ -1,4 +1,5 @@
 package com.cryptlex.lexfloatclient;
+import java.math.BigInteger;
 
 public class HostLicenseMeterAttribute {
 
@@ -15,14 +16,14 @@ public class HostLicenseMeterAttribute {
     /**
      * The total uses of the meter attribute.
      */
-    public long totalUses;
+    public BigInteger totalUses;
 
     /**
      * The gross uses of the meter attribute. 
      */
-    public long grossUses;
+    public BigInteger grossUses;
 
-    public HostLicenseMeterAttribute(String name, long allowedUses, long totalUses, long grossUses) {
+    public HostLicenseMeterAttribute(String name, long allowedUses, BigInteger totalUses, BigInteger grossUses) {
         this.name = name;
         this.allowedUses = allowedUses;
         this.totalUses = totalUses;

src/main/java/com/cryptlex/lexfloatclient/LexFloatClient.java

@@ -26,8 +26,9 @@ public class LexFloatClient {
      */
     public static final int LF_FAIL = 1;
 
-    private static long toUnsignedLong(long value) {
-        return BigInteger.valueOf(value).and(BigInteger.valueOf(0xFFFFFFFFFFFFFFFFL)).longValue();
+    // Convert long to BigInteger to correctly handle unsigned 64-bit values
+    private static BigInteger toUnsignedBigInteger(long value) {
+        return BigInteger.valueOf(value).and(BigInteger.valueOf(0xFFFFFFFFFFFFFFFFL));
     }
 
     /**
@@ -264,18 +265,19 @@ public static String GetHostLicenseMetadata(String key) throws LexFloatClientExc
     public static HostLicenseMeterAttribute GetHostLicenseMeterAttribute(String name) throws LexFloatClientException, UnsupportedEncodingException {
         int status;
         LongByReference allowedUses = new LongByReference(0);
+        // These references can still hold the uint64_t values populated by the native function
         LongByReference totalUses = new LongByReference(0);
         LongByReference grossUses = new LongByReference(0);
 
         if (Platform.isWindows()) {
             status = LexFloatClientNative.GetHostLicenseMeterAttribute(new WString(name), allowedUses, totalUses, grossUses);
             if (LF_OK == status) {
-                return new HostLicenseMeterAttribute(name, allowedUses.getValue(), toUnsignedLong(totalUses.getValue()), toUnsignedLong(grossUses.getValue()));
+                return new HostLicenseMeterAttribute(name, allowedUses.getValue(), toUnsignedBigInteger(totalUses.getValue()), toUnsignedBigInteger(grossUses.getValue()));
             }
         } else {
             status = LexFloatClientNative.GetHostLicenseMeterAttribute(name, allowedUses, totalUses, grossUses);
             if (LF_OK == status) {
-                return new HostLicenseMeterAttribute(name, allowedUses.getValue(), toUnsignedLong(totalUses.getValue()), toUnsignedLong(grossUses.getValue()));
+                return new HostLicenseMeterAttribute(name, allowedUses.getValue(), toUnsignedBigInteger(totalUses.getValue()), toUnsignedBigInteger(grossUses.getValue()));
             }
         }
         throw new LexFloatClientException(status);