[#328] get specific object version (#429)

* [#328] add object-history-detail endpoint

* [#328] update oas spec

* [#328] update path parameter documentation

* [#328] apply formatting

---------

Co-authored-by: Sonny Bakker <sonny@maykinmedia.nl>

src/objects/api/v2/openapi.yaml

@@ -458,6 +458,51 @@ paths:
       responses:
         '204':
           description: No response body
+  /objects/{uuid}/{index}:
+    get:
+      operationId: object_history_detail
+      description: Retrieve the specified OBJECT given an UUID and INDEX.
+      parameters:
+      - in: header
+        name: Accept-Crs
+        schema:
+          type: string
+          enum:
+          - EPSG:4326
+        description: 'The desired ''Coordinate Reference System'' (CRS) of the response
+          data. According to the GeoJSON spec, WGS84 is the default (EPSG: 4326 is
+          the same as WGS84).'
+      - in: path
+        name: index
+        schema:
+          type: number
+        required: true
+      - in: path
+        name: uuid
+        schema:
+          type: string
+          format: uuid
+        required: true
+      tags:
+      - objects
+      security:
+      - tokenAuth: []
+      responses:
+        '200':
+          headers:
+            Content-Crs:
+              schema:
+                type: string
+                enum:
+                - EPSG:4326
+              description: 'The ''Coordinate Reference System'' (CRS) of the request
+                data. According to the GeoJSON spec, WGS84 is the default (EPSG: 4326
+                is the same as WGS84).'
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/HistoryRecord'
+          description: OK
   /objects/{uuid}/history:
     get:
       operationId: object_history

src/objects/api/v2/views.py

@@ -3,9 +3,11 @@
 from django.conf import settings
 from django.db import models
 
-from drf_spectacular.utils import extend_schema, extend_schema_view
+from drf_spectacular.types import OpenApiTypes
+from drf_spectacular.utils import OpenApiParameter, extend_schema, extend_schema_view
 from rest_framework import mixins, viewsets
 from rest_framework.decorators import action
+from rest_framework.generics import get_object_or_404
 from rest_framework.response import Response
 from vng_api_common.filters import Backend as FilterBackend
 from vng_api_common.search import SearchMixin
@@ -126,6 +128,37 @@ def history(self, request, uuid=None):
         serializer = self.get_serializer(records, many=True)
         return Response(serializer.data)
 
+    @extend_schema(
+        description="Retrieve the specified OBJECT given an UUID and INDEX.",
+        responses={"200": HistoryRecordSerializer()},
+        parameters=[
+            OpenApiParameter(
+                name="index",
+                location=OpenApiParameter.PATH,
+                required=True,
+                type=OpenApiTypes.NUMBER,
+            ),
+            OpenApiParameter(
+                name="uuid",
+                location=OpenApiParameter.PATH,
+                required=True,
+                type=OpenApiTypes.UUID,
+            ),
+        ],
+    )
+    @action(
+        detail=True,
+        methods=["get"],
+        url_path=r"(?P<index>\d+)",
+        serializer_class=HistoryRecordSerializer,
+    )
+    def history_detail(self, request, uuid=None, index=None):
+        """Retrieve a RECORD of an OBJECT."""
+        queryset = self.get_queryset()
+        record = get_object_or_404(queryset, object__uuid=uuid, index=index)
+        serializer = self.get_serializer(record)
+        return Response(serializer.data)
+
     @extend_schema(
         description="Perform a (geo) search on OBJECTs.",
         request=ObjectSearchSerializer,

src/objects/tests/v2/test_object_api.py

@@ -123,6 +123,68 @@ def test_retrieve_object(self, m):
             },
         )
 
+    def test_retrieve_by_index(self, m):
+        record1 = ObjectRecordFactory.create(
+            object__object_type=self.object_type,
+            start_at=date(2020, 1, 1),
+            geometry="POINT (4.910649523925713 52.37240093589432)",
+            index=1,
+        )
+
+        object = record1.object
+
+        record2 = ObjectRecordFactory.create(
+            object=object, start_at=date.today(), correct=record1, index=2
+        )
+
+        with self.subTest(record=record1):
+            url = reverse("object-history-detail", args=[object.uuid, 1])
+
+            response = self.client.get(url)
+
+            self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+            data = response.json()
+
+            self.assertEqual(
+                data,
+                {
+                    "index": 1,
+                    "typeVersion": record1.version,
+                    "data": record1.data,
+                    "geometry": json.loads(record1.geometry.json),
+                    "startAt": record1.start_at.isoformat(),
+                    "endAt": record2.start_at.isoformat(),
+                    "registrationAt": record1.registration_at.isoformat(),
+                    "correctionFor": None,
+                    "correctedBy": 2,
+                },
+            )
+
+        with self.subTest(record=record2):
+            url = reverse("object-history-detail", args=[object.uuid, 2])
+
+            response = self.client.get(url)
+
+            self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+            data = response.json()
+
+            self.assertEqual(
+                data,
+                {
+                    "index": 2,
+                    "typeVersion": record2.version,
+                    "data": record2.data,
+                    "geometry": json.loads(record2.geometry.json),
+                    "startAt": record2.start_at.isoformat(),
+                    "endAt": None,
+                    "registrationAt": record2.registration_at.isoformat(),
+                    "correctionFor": 1,
+                    "correctedBy": None,
+                },
+            )
+
     def test_create_object(self, m):
         mock_service_oas_get(m, OBJECT_TYPES_API, "objecttypes")
         m.get(