From abe7c7af7048a032b8d57f3492db1816d4fc851e Mon Sep 17 00:00:00 2001
From: jelanmathewjames <72068016+jelanmathewjames@users.noreply.github.com>
Date: Sat, 15 Jun 2024 21:00:27 +0530
Subject: [PATCH] update launchpad leaderboard serializer

---
 api/launchpad/serializers.py | 48 ++++++++++++++++++++++++++++++++++--
 1 file changed, 46 insertions(+), 2 deletions(-)

diff --git a/api/launchpad/serializers.py b/api/launchpad/serializers.py
index fdfbeba5..270638e8 100644
--- a/api/launchpad/serializers.py
+++ b/api/launchpad/serializers.py
@@ -4,8 +4,9 @@
 
 
 class LaunchpadLeaderBoardSerializer(serializers.ModelSerializer):
-    rank = serializers.IntegerField()
+    rank = serializers.SerializerMethodField()
     karma = serializers.IntegerField()
+    actual_karma = serializers.IntegerField(source="wallet_user.karma", default=None)
     org = serializers.CharField()
     district_name = serializers.CharField()
     state = serializers.CharField()
@@ -14,6 +15,49 @@ class Meta:
         model = User
         fields = ("rank", "full_name", "karma", "org", "district_name", "state")
 
+    def get_rank(self, obj):
+        total_karma_subquery = KarmaActivityLog.objects.filter(
+            user=OuterRef('id'),
+            task__event='launchpad',
+            appraiser_approved=True,
+        ).values('user').annotate(
+            total_karma=Sum('karma')
+        ).values('total_karma')
+        allowed_org_types = ["College", "School", "Company"]
+
+        intro_task_completed_users = KarmaActivityLog.objects.filter(
+            task__event='launchpad',
+            appraiser_approved=True,
+            task__hashtag='#lp24-introduction',
+        ).values('user')
+        
+        users = User.objects.filter(
+            karma_activity_log_user__task__event="launchpad",
+            karma_activity_log_user__appraiser_approved=True,
+            id__in=intro_task_completed_users
+        ).prefetch_related(
+            Prefetch(
+                "user_organization_link_user",
+                queryset=UserOrganizationLink.objects.filter(org__org_type__in=allowed_org_types),
+            )
+        ).filter(
+            user_organization_link_user__id__in=UserOrganizationLink.objects.filter(
+                org__org_type__in=allowed_org_types
+            ).values("id")
+        ).annotate(
+            karma=Subquery(total_karma_subquery, output_field=IntegerField()),
+            time_=Max("karma_activity_log_user__created_at"),
+        ).order_by("-karma", "time_")
+        
+        # high complexity
+        rank = 0
+        for data in users:
+            rank += 1
+            if data.id == obj.id:
+                break    
+        
+        return rank
+
 
 class LaunchpadParticipantsSerializer(serializers.ModelSerializer):
     org = serializers.CharField()
@@ -23,4 +67,4 @@ class LaunchpadParticipantsSerializer(serializers.ModelSerializer):
 
     class Meta:
         model = User
-        fields = ("full_name", "level", "org", "district_name", "state")
\ No newline at end of file
+        fields = ("full_name", "level", "org", "district_name", "state")