[feature] Add API endpoint for indoor map coordinates #828

Implemented API to return device coordinates for a given location ID.

Fixes #828

Author: dee077

openwisp_controller/geo/api/views.py

@@ -51,6 +51,12 @@ class Meta(OrganizationManagedFilter.Meta):
         model = FloorPlan
 
 
+class DeviceFloorplanCoordinatesFilter(OrganizationManagedFilter):
+    class Meta(OrganizationManagedFilter.Meta):
+        model = Location
+        fields = OrganizationManagedFilter.Meta.fields + ['floorplan__floor']
+
+
 class ListViewPagination(pagination.PageNumberPagination):
     page_size = 10
     page_size_query_param = 'page_size'
@@ -187,6 +193,38 @@ class GeoJsonLocationList(
     filterset_class = LocationOrganizationFilter
 
 
+class DeviceFloorplanCoordinatesList(ProtectedAPIMixin, generics.ListAPIView):
+    """
+    List coordinates of device floorplan for a given location ID
+    """
+
+    serializer_class = DeviceLocationSerializer
+    pagination_class = ListViewPagination
+    filter_backends = [filters.DjangoFilterBackend]
+    filterset_class = DeviceFloorplanCoordinatesFilter
+    queryset = DeviceLocation.objects.select_related(
+        "content_object", "location", "floorplan"
+    )
+
+    def get_queryset(self):
+        location_id = self.kwargs.get('pk')
+        floor = self.request.query_params.get('floor')
+        queryset = super().get_queryset().filter(location_id=location_id)
+        if floor:
+            queryset = queryset.filter(floorplan__floor=floor)
+        return queryset
+
+    def list(self, request, *args, **kwargs):
+        queryset = self.get_queryset()
+        serializer = self.get_serializer(queryset, many=True)
+        available_floors = queryset.values_list(
+            'floorplan__floor', flat=True
+        ).distinct()
+        return Response(
+            {"devices": serializer.data, "available_floors": list(available_floors)}
+        )
+
+
 class LocationDeviceList(
     FilterByParentManaged, ProtectedAPIMixin, generics.ListAPIView
 ):
@@ -239,6 +277,7 @@ class LocationDetailView(
 # add with_geo filter to device API
 DeviceListCreateView.filterset_class = DeviceListFilter
 
+device_floorplan_coordinates = DeviceFloorplanCoordinatesList.as_view()
 device_coordinates = DeviceCoordinatesView.as_view()
 device_location = DeviceLocationView.as_view()
 geojson = GeoJsonLocationList.as_view()

openwisp_controller/geo/tests/test_api.py

@@ -1006,3 +1006,30 @@ def test_deactivated_device(self):
         with self.subTest('Test deleting DeviceLocation'):
             response = self.client.delete(url)
             self.assertEqual(response.status_code, 403)
+
+    def test_floorplan_coordinates(self):
+        org = self._create_org()
+        location = self._create_location(type='indoor', organization=org)
+        floor1 = self._create_floorplan(floor=1, location=location)
+        floor2 = self._create_floorplan(floor=2, location=location)
+        device1 = self._create_device(
+            name='device1', mac_address='00:00:00:00:00:01', organization=org
+        )
+        device2 = self._create_device(
+            name='device2', mac_address='00:00:00:00:00:02', organization=org
+        )
+        self._create_object_location(
+            content_object=device1,
+            location=location,
+            floorplan=floor1,
+            organization=org,
+        )
+        self._create_object_location(
+            content_object=device2,
+            location=location,
+            floorplan=floor2,
+            organization=org,
+        )
+        path = reverse('geo_api:device_floorplan_coordinates', args=[location.id])
+        response = self.client.get(path)
+        print(response.__dict__)

openwisp_controller/geo/utils.py

@@ -41,4 +41,9 @@ def get_geo_urls(geo_views):
             geo_views.detail_location,
             name='detail_location',
         ),
+        path(
+            'api/v1/controller/location/<str:pk>/floorplan/devices/',
+            geo_views.device_floorplan_coordinates,
+            name='device_floorplan_coordinates',
+        ),
     ]