improve logs of E2EE API to not pollute logs

Signed-off-by: Matthieu Gallien <matthieu.gallien@nextcloud.com>

src/libsync/capabilities.cpp

@@ -143,24 +143,27 @@ bool Capabilities::clientSideEncryptionAvailable() const
     }
 
     const auto version = properties.value(QStringLiteral("api-version"), "1.0").toByteArray();
-    qCInfo(lcServerCapabilities) << "E2EE API version:" << version;
     const auto splittedVersion = version.split('.');
 
     bool ok = false;
     const auto major = !splittedVersion.isEmpty() ? splittedVersion.at(0).toInt(&ok) : 0;
     if (!ok) {
-        qCWarning(lcServerCapabilities) << "Didn't understand version scheme (major), E2EE disabled";
+        qCWarning(lcServerCapabilities) << "Didn't understand version scheme (major), E2EE disabled" << version;
         return false;
     }
 
     ok = false;
     const auto minor = splittedVersion.size() > 1 ? splittedVersion.at(1).toInt(&ok) : 0;
     if (!ok) {
-        qCWarning(lcServerCapabilities) << "Didn't understand version scheme (minor), E2EE disabled";
+        qCWarning(lcServerCapabilities) << "Didn't understand version scheme (minor), E2EE disabled" << version;
         return false;
     }
 
-    return major == 1 && minor >= 1;
+    const auto capabilityAvailable = (major == 1 && minor >= 1);
+    if (!capabilityAvailable) {
+        qCInfo(lcServerCapabilities) << "Incompatible E2EE API version:" << version;
+    }
+    return capabilityAvailable;
 }
 
 bool Capabilities::notificationsAvailable() const