From 904f329010ed5e98cdcbad562f1364b04ad9fc92 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Sza=C5=82owski?= <michal.szalowski@gmail.com>
Date: Tue, 24 Dec 2024 16:12:18 +0100
Subject: [PATCH] fix(#2460): fix calculating live voting power

---
 CHANGELOG.md                             |  2 +-
 govtool/backend/sql/get-voting-power.sql | 27 ++++++++++++++++++------
 2 files changed, 22 insertions(+), 7 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9cebca540..5b074cb93 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,7 +16,7 @@ changes.
 
 ### Fixed
 
--
+- Fix calculating DRep live voting power [Issue 2460](https://github.com/IntersectMBO/govtool/issues/2460)
 
 ### Changed
 
diff --git a/govtool/backend/sql/get-voting-power.sql b/govtool/backend/sql/get-voting-power.sql
index 14662c65d..2a39edf1d 100644
--- a/govtool/backend/sql/get-voting-power.sql
+++ b/govtool/backend/sql/get-voting-power.sql
@@ -1,6 +1,21 @@
-select coalesce(sum(uv.value), 0) as amount
-from utxo_view uv
-join delegation_vote dv on uv.stake_address_id = dv.addr_id
-join drep_hash dh on dv.drep_hash_id = dh.id
-where dh.raw = decode(?,'hex')
-and dv.cert_index != 0
\ No newline at end of file
+WITH LatestDelegationVote AS (
+  SELECT 
+    addr_id,
+    MAX(id) AS latest_vote_id
+  FROM 
+    delegation_vote
+  GROUP BY 
+    addr_id
+)
+SELECT 
+  SUM(uv.value) AS total_value
+FROM 
+  utxo_view uv
+JOIN 
+  stake_address sa ON sa.id = uv.stake_address_id
+JOIN 
+  LatestDelegationVote ldv ON uv.stake_address_id = ldv.addr_id
+JOIN 
+  delegation_vote dv ON dv.id = ldv.latest_vote_id
+WHERE 
+  dv.drep_hash_id = (SELECT id FROM drep_hash WHERE raw = decode(?,'hex'))