From 0f38bfb5793d14562a29fb6a11b148f2e7240e44 Mon Sep 17 00:00:00 2001
From: pmessan <p.newman.messan@gmail.com>
Date: Fri, 17 Jan 2025 15:39:43 +0100
Subject: [PATCH] fix(client): Ensure that the bus is connected before pairing

If pairing is attempted before the bus is connected, the pairing process fails due to an exception being raised.
---
 AUTHORS.rst                        | 1 +
 CHANGELOG.rst                      | 4 ++++
 bleak/backends/bluezdbus/client.py | 5 +++++
 3 files changed, 10 insertions(+)

diff --git a/AUTHORS.rst b/AUTHORS.rst
index b6eca00d..6bff3be3 100644
--- a/AUTHORS.rst
+++ b/AUTHORS.rst
@@ -24,6 +24,7 @@ Contributors
 * David Johansen <davejohansen@gmail.com>
 * JP Hutchins <jphutchins@gmail.com>
 * Bram Duvigneau <bram@bramd.nl>
+* Peter-Newman Messan <p.newmwn.messan@gmail.com>
 
 Sponsors
 --------
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 9c360d48..fa1df846 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -10,6 +10,10 @@ and this project adheres to `Semantic Versioning <https://semver.org/spec/v2.0.0
 `Unreleased`_
 =============
 
+Fixed
+-------
+* Fixed uninitialized bus connection when pairing before connection on BlueZ backend.
+
 `0.22.3`_ (2024-10-05)
 ======================
 
diff --git a/bleak/backends/bluezdbus/client.py b/bleak/backends/bluezdbus/client.py
index ec225584..54c7f1f5 100644
--- a/bleak/backends/bluezdbus/client.py
+++ b/bleak/backends/bluezdbus/client.py
@@ -436,6 +436,11 @@ async def pair(self, *args, **kwargs) -> bool:
             Boolean regarding success of pairing.
 
         """
+        if self._bus is None:
+            self._bus = await MessageBus(
+                bus_type=BusType.SYSTEM, negotiate_unix_fd=True
+            ).connect()
+
         # See if it is already paired.
         reply = await self._bus.call(
             Message(