Add RSSI scan limit

1 files changed, 5 insertions, 2 deletions

diff --git a/lib/control/universal_ble_scanner_controller.dart b/lib/control/universal_ble_scanner_controller.dart
index e111f3b..7785088 100644
--- a/lib/control/universal_ble_scanner_controller.dart
+++ b/lib/control/universal_ble_scanner_controller.dart
@@ -27,11 +27,14 @@ class UniversalBleScannerController extends ScannerControllerImpl {
   StreamSubscription<BleDevice>? _subScan;
   StreamSubscription<AvailabilityState>? _subAvail;
   final List<BleDevice> _devices = [];
+  final int? rssiLimit;
 
-  UniversalBleScannerController() {
+  UniversalBleScannerController({this.rssiLimit}) {
     // fuck this limitation, I want an instance method to be called, which doesn't
     // work in an initializer.
-    _subScan = UniversalBle.scanStream.listen(_newDeviceAction);
+    _subScan = UniversalBle.scanStream
+        .where((d) => rssiLimit == null || (d.rssi ?? 0) > (rssiLimit!))
+        .listen(_newDeviceAction);
     _subAvail = UniversalBle.availabilityStream.listen(_newAvailabilityAction);
   }