From e3dd8238cf9d7f24effcb2fe7dc6a72dce567c0c Mon Sep 17 00:00:00 2001
From: jelanmathewjames <jelanmathewjames1234@gmail.com>
Date: Thu, 30 May 2024 22:47:53 +0530
Subject: [PATCH] revert launchpad query to raw sql

---
 api/launchpad/launchpad_views.py | 112 +++++++++++++++++--------------
 1 file changed, 62 insertions(+), 50 deletions(-)

diff --git a/api/launchpad/launchpad_views.py b/api/launchpad/launchpad_views.py
index ed9a184d..996a4b80 100644
--- a/api/launchpad/launchpad_views.py
+++ b/api/launchpad/launchpad_views.py
@@ -1,4 +1,5 @@
 from django.db.models import Sum, Max, Prefetch, When, Case, IntegerField, F
+from django.db import connection
 
 from rest_framework.views import APIView
 
@@ -11,54 +12,65 @@
 
 class Leaderboard(APIView):
     def get(self, request):
-        users = (
-            User.objects.filter(
-                karma_activity_log_user__task__event="launchpad",
-                karma_activity_log_user__appraiser_approved=True,
-                karma_activity_log_user__task__hashtag="#lp24-introduction",
+        query = """
+        SELECT 
+            u.full_name, 
+            SUM(kal.karma) AS karma,
+            COALESCE(org.title, comm.title) AS org,
+            COALESCE(org.dis, d.name) AS district,
+            COALESCE(org.state, s.name) AS state,
+            MAX(kal.created_at) AS time_
+        FROM karma_activity_log AS kal
+        INNER JOIN user AS u ON kal.user_id = u.id
+        INNER JOIN task_list AS tl ON tl.id = kal.task_id
+        LEFT JOIN (
+            SELECT 
+                uol.user_id,
+                org.id, 
+                org.title AS title, 
+                d.name dis, 
+                s.name state
+            FROM user_organization_link AS uol
+            INNER JOIN organization AS org ON org.id = uol.org_id AND org.org_type IN 
+            ("College", "School", "Company")
+            LEFT JOIN district AS d ON d.id = org.district_id
+            LEFT JOIN zone AS z ON z.id = d.zone_id
+            LEFT JOIN state AS s ON s.id = z.state_id
+            GROUP BY uol.user_id
+        ) AS org ON org.user_id = u.id
+        LEFT JOIN (
+            SELECT 
+                uol.user_id,
+                org.id, 
+                org.title AS title
+            FROM organization AS org
+            INNER JOIN user_organization_link AS uol ON org.id = uol.org_id AND org.org_type IN ("Community")
+            GROUP BY uol.user_id
+        ) AS comm ON comm.user_id = u.id
+        LEFT JOIN district AS d ON d.id = u.district_id
+        LEFT JOIN zone AS z ON d.zone_id = z.id
+        LEFT JOIN state AS s ON z.state_id = s.id
+        WHERE 
+            tl.event = "launchpad" AND
+            kal.appraiser_approved = TRUE AND
+            u.id IN (
+                SELECT karma_activity_log.user_id FROM karma_activity_log 
+                INNER JOIN task_list ON karma_activity_log.task_id = task_list.id
+                WHERE
+                    task_list.hashtag = "#lp24-introduction" AND
+                    karma_activity_log.appraiser_approved = TRUE
             )
-            .prefetch_related(
-                Prefetch(
-                    "user_organization_link_user__org",
-                    queryset=Organization.objects.all()
-                ),
-            ).select_related("district", "district__zone__state")
-            .annotate(
-                karma=Sum(
-                    Case(
-                        When(
-                            karma_activity_log_user__task__event="launchpad",
-                            karma_activity_log_user__appraiser_approved=True,
-                            then="karma_activity_log_user__karma",
-                        ),
-                        default=0,
-                        output_field=IntegerField()
-                    )
-                ),
-                time_=Max("karma_activity_log_user__created_at"),
-                org=F("user_organization_link_user__org__title"),
-                district_name=F("district__name"),
-                state=F("district__zone__state__name"),
-            )
-            .order_by("-karma", "time_")
-        )
-
-        paginated_queryset = CommonUtils.get_paginated_queryset(
-            users,
-            request,
-            ["karma", "org", "district_name", "state", "time_"],
-            sort_fields={
-                "karma": "karma",
-                "org": "org",
-                "district_name": "district_name",
-                "state": "state",
-                "time_": "time_",
-            },
-        )
-
-        serializer = LaunchpadLeaderBoardSerializer(
-            paginated_queryset.get("queryset"), many=True
-        )
-        return CustomResponse().paginated_response(
-            data=serializer.data, pagination=paginated_queryset.get("pagination")
-        )
+        GROUP BY u.id
+        ORDER BY karma DESC, time_
+        """
+        with connection.cursor() as cursor:
+            cursor.execute(query)
+            results = cursor.fetchall()
+            column_names = [desc[0] for desc in cursor.description]
+            user_ids = set()
+            list_of_dicts = []
+            for row in results:
+                if row[0] not in user_ids:
+                    user_ids.add(row[0])
+                    list_of_dicts.append(dict(zip(column_names, row)))
+            return CustomResponse(response=list_of_dicts).get_success_response()