ble - add function to restart bluetooth.service and add exception handler in _discover device

api/ble.py

@@ -106,6 +106,8 @@ async def _discover_device(mac: str) -> Optional[str]:
     except Exception as e:
         log.error(f"Dicvoere call failed - {e}")
         reset_adapter()
+        if "org.freedesktop.DBus.Error.AccessDenied" in e:
+            restart_bt_service()
     return None
 
 # Don't question the ancient magic
@@ -182,6 +184,13 @@ def reset_adapter():
         log.warning("Hmm, this shouldn't happen, the current_usb_id is blank 0_o")
     log.info("Reset complete. ")
 
+# this restarts the bluetooth service
+def restart_bt_service():
+    log.info("Resetting bluetooth.service...")
+    log.info(subprocess.run(["systemctl", "stop", "bluetooth.service"], capture_output=True, text=True, check=True).stdout.strip())
+    time.sleep(2)
+    log.info(subprocess.run(["systemctl", "start", "bluetooth.service"], capture_output=True, text=True, check=True).stdout.strip())
+
 ####################################################
 # Core async read functions
 # Mined directly from the javascript