[Backend] Add submissions metrics by PK (Cloud-CV#4353)

Author: gchhablani

apps/challenges/urls.py

@@ -49,6 +49,11 @@
         views.get_all_challenges_submission_metrics,
         name="get_all_challenges_submission_metrics",
     ),
+    url(
+        r"^challenge/get_submission_metrics_by_pk/(?P<pk>[0-9]+)/$",
+        views.get_challenge_submission_metrics_by_pk,
+        name="get_challenge_submission_metrics_by_pk",
+    ),
     url(
         r"^challenges/participated/(?P<challenge_time>[A-Za-z]+)/$",
         views.get_all_participated_challenges,

apps/challenges/views.py

@@ -753,6 +753,30 @@ def get_all_challenges_submission_metrics(request):
     return Response(submission_metrics, status=status.HTTP_200_OK)
 
 
+@api_view(["GET"])
+@throttle_classes([AnonRateThrottle])
+def get_challenge_submission_metrics_by_pk(request, pk):
+    """
+    Returns the submission metrics for a given challenge by primary key and their phases
+    """
+    if not is_user_a_staff(request.user):
+        response_data = {"error": "Sorry, you are not authorized to make this request"}
+        return Response(response_data, status=status.HTTP_403_FORBIDDEN)
+    challenge = get_challenge_model(pk)
+    challenge_phases = ChallengePhase.objects.filter(challenge=challenge)
+    submission_metrics = {}
+
+    submission_statuses = [status[0] for status in Submission.STATUS_OPTIONS]
+
+    # Fetch challenge phases for the challenge
+    challenge_phases = ChallengePhase.objects.filter(challenge=challenge)
+    for submission_status in submission_statuses:
+        count = Submission.objects.filter(challenge_phase__in=challenge_phases, status=submission_status).count()
+        submission_metrics[submission_status] = count
+
+    return Response(submission_metrics, status=status.HTTP_200_OK)
+
+
 @api_view(["GET"])
 @throttle_classes([AnonRateThrottle])
 def get_featured_challenges(request):