feat: add get_content_filter_hash endpoint

style: fix pycodestyle issues

chore: pylint disable=no-member

chore: pycodestyle fix

chore: add bad json error handling for get_content_filter_hash

chore: address review comments

enterprise_catalog/apps/api/v1/tests/test_views.py

@@ -2589,6 +2589,25 @@ def test_get_query_by_hash_requires_hash(self):
         response_json = response.json()
         assert response_json == ['You must provide at least one of the following query parameters: hash.']
 
+    def test_get_content_filter_hash(self):
+        """
+        Test that get content filter hash returns md5 hash of query
+        """
+        url = reverse('api:v1:get-content-filter-hash')
+        test_query = json.dumps({"content_type": ["political", "unit", "market"]})
+        response = self.client.generic('GET', url, content_type='application/json', data=test_query)
+        assert response.json() == '35584b583415a5bd4e51cc70d898a0eb'  # pylint: disable=no-member
+
+    def test_get_content_filter_hash_bad_query(self):
+        """
+        Test that get content filter hash returns md5 hash of query
+        """
+        url = reverse('api:v1:get-content-filter-hash')
+        test_query = 'bad query'
+        response = self.client.generic('GET', url, content_type='application/json', data=test_query)
+        err_detail = "Failed to parse catalog query: JSON parse error - Expecting value: line 1 column 1 (char 0)"
+        assert response.json() == {"detail": err_detail} # pylint: disable=no-member
+
     def test_catalog_query_retrieve(self):
         """
         Test that the Catalog Query viewset supports retrieving individual queries

enterprise_catalog/apps/api/v1/urls.py

@@ -115,6 +115,11 @@
         CatalogQueryViewSet.as_view({'get': 'get_query_by_hash'}),
         name='get-query-by-hash'
     ),
+    path(
+        'catalog-queries/get_content_filter_hash',
+        CatalogQueryViewSet.as_view({'get': 'get_content_filter_hash'}),
+        name='get-content-filter-hash'
+    ),
 ]
 
 urlpatterns += router.urls

enterprise_catalog/apps/api/v1/views/catalog_query.py

@@ -3,7 +3,7 @@
 from edx_rbac.mixins import PermissionRequiredForListingMixin
 from rest_framework import viewsets
 from rest_framework.decorators import action
-from rest_framework.exceptions import NotFound
+from rest_framework.exceptions import NotFound, ParseError
 from rest_framework.renderers import JSONRenderer
 from rest_framework.response import Response
 
@@ -24,6 +24,7 @@
     enterprises_with_admin_access,
     has_access_to_all_enterprises,
 )
+from enterprise_catalog.apps.catalog.utils import get_content_filter_hash
 
 
 class CatalogQueryViewSet(viewsets.ReadOnlyModelViewSet, BaseViewSet, PermissionRequiredForListingMixin):
@@ -106,3 +107,15 @@ def get_query_by_hash(self, request, **kwargs):
             raise NotFound('Catalog query not found.') from exc
         serialized_data = self.serializer_class(query)
         return Response(serialized_data.data)
+
+    @action(detail=True, methods=['get'])
+    def get_content_filter_hash(self, request, **kwargs):
+        """
+        Get md5 hash of a catalog query
+        """
+        try:
+            content_filter = request.data
+            content_filter_hash = get_content_filter_hash(content_filter)
+        except ParseError as exc:
+            raise ParseError(f"Failed to parse catalog query: {exc}") from exc
+        return Response(content_filter_hash)