feat(io): Add InterfaceDeviceManager to D-Bus bus provider

Integrated the InterfaceDeviceManager class into the com.revolutionpi
.ios1 D-Bus bus provider. This addition enables managing device paths
and querying all devices via D-Bus.

Signed-off-by: Sven Sager <s.sager@kunbus.com>

src/revpi_middleware/ios1/bus_provider_io.py

@@ -11,6 +11,9 @@ from pydbus import SessionBus, SystemBus
 from revpimodio2 import Cycletools
 
 from . import REVPI_DBUS_NAME
+from .interface_devices import (
+    InterfaceDeviceManager,
+)
 from .interface_ios import (
     InterfaceIoManager,
     InterfaceInpBool,
@@ -75,6 +78,7 @@ class BusProviderIo(Thread):
         try:
             self._bus.publish(
                 REVPI_DBUS_NAME,
+                InterfaceDeviceManager(self._modio),
                 InterfaceIoManager(self._modio, self._dc_io_interfaces),
                 *lst_interfaces,
             )

src/revpi_middleware/ios1/interface_devices.py

@@ -0,0 +1,46 @@
+# -*- coding: utf-8 -*-
+# SPDX-FileCopyrightText: 2025 KUNBUS GmbH
+# SPDX-License-Identifier: GPL-2.0-or-later
+"""D-Bus interfaces for IOs."""
+from gi.overrides.GLib import Variant
+from pydbus.generic import signal
+from revpimodio2 import RevPiModIO, Cycletools
+
+from .ios1_helper import REVPI_DBUS_BASE_PATH, DbusInterfaceIo
+
+
+class InterfaceDeviceManager:
+    """
+    <node>
+        <interface name="com.revolutionpi.ios1.DeviceManager">
+            <method name="GetAllDevices">
+                <arg type="as" direction="out"/>
+            </method>
+            <method name="Get">
+                <arg name="device_name" type="s" direction="in"/>
+                <arg name="object-path" type="o" direction="out"/>
+            </method>
+        </interface>
+    </node>
+    """
+
+    interface_name = "com.revolutionpi.ios1.DeviceManager"
+
+    def __init__(self, modio: RevPiModIO):
+        self.modio = modio
+
+        self.lst_device = []
+        for dev in self.modio.device:
+            self.lst_device.append(self._get_device_path(dev.position))
+
+    def _get_device_path(self, position: int) -> str:
+        return f"{REVPI_DBUS_BASE_PATH}/device/{position}"
+
+    def GetAllDevices(self) -> list[str]:
+        return self.lst_device
+
+    def Get(self, device_position) -> str:
+        if device_position in self.modio.device:
+            return self._get_device_path(device_position)
+
+        raise KeyError(f"No device on position '{device_position}' found.")