feat: add update_distance method (#13)

src/ibeacon_ble/__init__.py

@@ -42,6 +42,12 @@ class iBeaconAdvertisement:
     source: str
     distance: int | None
 
+    def update_rssi(self, rssi: int) -> None:
+        """Update the RSSI and distance."""
+        self.rssi = rssi
+        distance = calculate_distance_meters(self.power, rssi)
+        self.distance = int(round(distance)) if distance is not None else None
+
 
 def is_ibeacon_service_info(service_info: BluetoothServiceInfo) -> bool:
     """Return True if the service info is an iBeacon."""

tests/test_init.py

@@ -58,6 +58,10 @@ def test_parse():
     assert parsed.distance == 1
     assert parsed.uuid == UUID("426c7565-4368-6172-6d42-6561636f6e73")
 
+    parsed.update_rssi(-70)
+    assert parsed.rssi == -70
+    assert parsed.distance == 3
+
 
 def test_not_parse():
     parsed = parse(NOT_IBEACON_SERVIE_INFO)