core: add API to list all authenticator devices

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

authentik/core/api/devices.py

@@ -0,0 +1,36 @@
+"""Authenticator Devices API Views"""
+from django_otp import devices_for_user
+from django_otp.models import Device
+from drf_spectacular.utils import extend_schema
+from rest_framework.fields import CharField, IntegerField, SerializerMethodField
+from rest_framework.permissions import IsAuthenticated
+from rest_framework.request import Request
+from rest_framework.response import Response
+from rest_framework.viewsets import ViewSet
+
+from authentik.core.api.utils import MetaNameSerializer
+
+
+class DeviceSerializer(MetaNameSerializer):
+    """Serializer for Duo authenticator devices"""
+
+    pk = IntegerField()
+    name = CharField()
+    type = SerializerMethodField()
+
+    def get_type(self, instance: Device) -> str:
+        """Get type of device"""
+        return instance._meta.label
+
+
+class DeviceViewSet(ViewSet):
+    """Viewset for authenticator devices"""
+
+    serializer_class = DeviceSerializer
+    permission_classes = [IsAuthenticated]
+
+    @extend_schema(responses={200: DeviceSerializer(many=True)})
+    def list(self, request: Request) -> Response:
+        """Get all devices for current user"""
+        devices = devices_for_user(request.user)
+        return Response(DeviceSerializer(devices, many=True).data)