Add Opslearning stats

 #Change the api and testcase according pr review

per/drf_views.py

@@ -3,7 +3,8 @@
 import pytz
 from django.conf import settings
 from django.db import transaction
-from django.db.models import Prefetch, Q
+from django.db.models import Count, F, Prefetch, Q
+from django.db.models.functions import ExtractYear
 from django.http import HttpResponse
 from django.shortcuts import get_object_or_404
 from django.utils.translation import get_language as django_get_language
@@ -20,7 +21,7 @@
 from rest_framework.response import Response
 from rest_framework.settings import api_settings
 
-from api.models import Country
+from api.models import AppealType, Country, Region
 from deployments.models import SectorTag
 from main.permissions import DenyGuestUserMutationPermission, DenyGuestUserPermission
 from main.utils import SpreadSheetContentNegotiation
@@ -921,6 +922,61 @@ def summary(self, request):
         )
         return response.Response(OpsLearningSummarySerializer(ops_learning_summary_instance).data)
 
+    @action(
+        detail=False,
+        methods=["GET"],
+        permission_classes=[DenyGuestUserMutationPermission, OpsLearningPermission],
+        url_path="stats",
+    )
+    def stats(self, request):
+        """
+        Get the Ops Learning stats based on the filters
+        """
+        ops_data = OpsLearning.objects.aggregate(
+            operations_included=Count("appeal_code", distinct=True),
+            learning_extracts=Count("id", filter=Q(is_validated=True), distinct=True),
+            sector_covered=Count("sector_validated", distinct=True),
+            source_used=Count("appeal_code__appealdocument", distinct=True),
+        )
+
+        learning_by_sector = (
+            SectorTag.objects.filter(title__isnull=False)
+            .annotate(count=Count("validated_sectors", distinct=True))
+            .values("id", "title", "count")
+        )
+        learning_by_region = (
+            Region.objects.annotate(count=Count("appeal__opslearning", distinct=True))
+            .values("id", "label", "count")
+            .order_by("label")
+        )
+
+        learning_by_country = (
+            Country.objects.annotate(operation_count=Count("appeal__opslearning", distinct=True))
+            .values("id", "name", "operation_count")
+            .order_by("name")
+        )
+
+        sources_overtime = {
+            str(appeal_type_label): OpsLearning.objects.filter(appeal_code__atype=appeal_type)
+            .annotate(year=ExtractYear(F("appeal_code__start_date")))
+            .values("year")
+            .annotate(count=Count("appeal_code__appealdocument", distinct=True))
+            .order_by("year")
+            for appeal_type, appeal_type_label in AppealType.choices
+        }
+
+        data = {
+            "operations_included": ops_data["operations_included"],
+            "learning_extracts": ops_data["learning_extracts"],
+            "sectors_covered": ops_data["sector_covered"],
+            "sources_used": ops_data["source_used"],
+            "learning_by_region": learning_by_region,
+            "learning_by_sector": learning_by_sector,
+            "sources_overtime": sources_overtime,
+            "learning_by_country": learning_by_country,
+        }
+        return response.Response(data)
+
 
 class PerDocumentUploadViewSet(viewsets.ModelViewSet):
     queryset = PerDocumentUpload.objects.all()

per/factories.py

@@ -3,6 +3,8 @@
 import factory
 from factory import fuzzy
 
+from api.factories.country import CountryFactory
+from api.models import Appeal, AppealDocument
 from deployments.factories.project import SectorTagFactory
 from per.models import (
     AssessmentType,
@@ -105,12 +107,22 @@ class Meta:
         model = FormPrioritization
 
 
+class AppealFactory(factory.django.DjangoModelFactory):
+    class Meta:
+        model = Appeal
+
+    country = factory.SubFactory(CountryFactory)
+
+
 class OpsLearningFactory(factory.django.DjangoModelFactory):
     learning = fuzzy.FuzzyText(length=50)
 
     class Meta:
         model = OpsLearning
 
+    appeal_code = factory.SubFactory(AppealFactory)
+    is_validated = fuzzy.FuzzyChoice([True, False])
+
 
 class OpsLearningCacheResponseFactory(factory.django.DjangoModelFactory):
     used_filters_hash = fuzzy.FuzzyText(length=20)
@@ -141,3 +153,10 @@ class OpsLearningComponentCacheResponseFactory(factory.django.DjangoModelFactory
 
     class Meta:
         model = OpsLearningComponentCacheResponse
+
+
+class AppealDocumentFactory(factory.django.DjangoModelFactory):
+    class Meta:
+        model = AppealDocument
+
+    appeal = factory.SubFactory(AppealFactory)

per/test_views.py

@@ -2,14 +2,19 @@
 from unittest import mock
 
 from api.factories.country import CountryFactory
+from api.factories.region import RegionFactory
 from api.models import AppealType
 from main.test_case import APITestCase
 from per.factories import (
+    AppealDocumentFactory,
+    AppealFactory,
     FormAreaFactory,
     FormComponentFactory,
     FormPrioritizationFactory,
+    OpsLearningFactory,
     OverviewFactory,
     PerWorkPlanFactory,
+    SectorTagFactory,
 )
 
 from .models import WorkPlanStatus
@@ -224,3 +229,93 @@ def test_summary_generation(self, generate_summary):
         }
         self.check_response_id(url=url, data=filters)
         self.assertTrue(generate_summary.assert_called)
+
+
+class OpsLearningStatsTestCase(APITestCase):
+
+    @classmethod
+    def setUpTestData(cls):
+        cls.region = RegionFactory.create(label="Region A")
+        cls.country = CountryFactory.create(region=cls.region, name="Country A")
+
+        cls.sector1 = SectorTagFactory.create(title="Sector 1")
+        cls.sector2 = SectorTagFactory.create(title="Sector 2")
+
+        cls.appeal1 = AppealFactory.create(
+            region=cls.region, country=cls.country, code="APP001", atype=0, start_date="2023-01-01"
+        )
+        cls.appeal2 = AppealFactory.create(
+            region=cls.region, country=cls.country, code="APP002", atype=1, start_date="2023-02-01"
+        )
+        AppealDocumentFactory.create(appeal=cls.appeal1)
+        AppealDocumentFactory.create(appeal=cls.appeal2)
+
+        cls.ops_learning1 = OpsLearningFactory.create(is_validated=True, appeal_code=cls.appeal1)
+        cls.ops_learning1.sector_validated.set([cls.sector1])
+
+        cls.ops_learning2 = OpsLearningFactory.create(is_validated=False, appeal_code=cls.appeal2)
+        cls.ops_learning2.sector_validated.set([cls.sector2])
+
+        cls.ops_learning3 = OpsLearningFactory.create(is_validated=False, appeal_code=cls.appeal2)
+        cls.ops_learning3.sector_validated.set([cls.sector2])
+
+    def test_ops_learning_stats(self):
+        url = "/api/v2/ops-learning/stats/"
+        response = self.client.get(url)
+
+        self.assertEqual(response.status_code, 200)
+
+        # Validate keys in response
+        expected_keys = [
+            "operations_included",
+            "sources_used",
+            "learning_extracts",
+            "sectors_covered",
+            "sources_overtime",
+            "learning_by_region",
+            "learning_by_sector",
+            "learning_by_country",
+        ]
+        for key in expected_keys:
+            self.assertIn(key, response.data)
+            print(response.data)
+
+        # Validate counts
+        self.assertEqual(response.data["operations_included"], 2)
+        self.assertEqual(response.data["sources_used"], 2)
+        self.assertEqual(response.data["learning_extracts"], 1)
+        self.assertEqual(response.data["sectors_covered"], 2)
+
+        # Validate learning_by_region
+        region_data = response.data["learning_by_region"]
+        self.assertEqual(len(region_data), 1)
+        self.assertEqual(region_data[0]["label"], "Region A")
+        self.assertEqual(region_data[0]["count"], 3)
+
+        # Validate learning_by_sector
+        sector_data = response.data["learning_by_sector"]
+        self.assertEqual(len(sector_data), 2)
+        self.assertEqual(sector_data[0]["title"], "Sector 1")
+        self.assertEqual(sector_data[0]["count"], 1)
+        self.assertEqual(sector_data[1]["title"], "Sector 2")
+        self.assertEqual(sector_data[1]["count"], 2)
+
+        # Validate learning_by_country
+        country_data = response.data["learning_by_country"]
+        self.assertEqual(len(country_data), 1)
+        self.assertEqual(country_data[0]["name"], "Country A")
+        self.assertEqual(country_data[0]["operation_count"], 3)
+
+        # Validate sources_overtime
+        for appeal_type, label in AppealType.choices:
+            self.assertIn(label, response.data["sources_overtime"])
+            for item in response.data["sources_overtime"][label]:
+                self.assertIn("year", item)
+                self.assertIn("count", item)
+
+                if label == "DREF":
+                    self.assertEqual(item["year"], 2023)
+                    self.assertEqual(item["count"], 1)
+                elif label == "Emergency Appeal":
+                    self.assertEqual(item["year"], 2023)
+                    self.assertEqual(item["count"], 1)