From 70b6ae985987efda7c9b8e8000f005019280c7b0 Mon Sep 17 00:00:00 2001
From: cornholio <0@mcornholio.ru>
Date: Thu, 6 Jun 2024 18:13:49 +0200
Subject: [PATCH] Querying decimals instead of hardcode

Fixes w3f/1k-validators-be-PRIVATE#86
---
 packages/common/src/chaindata/queries/ChainMeta.ts    | 11 ++++-------
 .../test/scorekeeper/NumNominations.unit.test.ts      |  7 +++++++
 2 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/packages/common/src/chaindata/queries/ChainMeta.ts b/packages/common/src/chaindata/queries/ChainMeta.ts
index e7786ae42..3509529c7 100644
--- a/packages/common/src/chaindata/queries/ChainMeta.ts
+++ b/packages/common/src/chaindata/queries/ChainMeta.ts
@@ -31,13 +31,10 @@ export const getDenom = async (
   try {
     const api = await chaindata.handler.getApi();
 
-    const chainType = await api.rpc.system.chain();
-    if (!chainType) {
-      return null;
-    }
-    const denom =
-      chainType.toString() == "Polkadot" ? 10000000000 : 1000000000000;
-    return denom;
+    const chainProps = await api.registry.getChainProperties();
+    const decimals = chainProps.tokenDecimals.toJSON()[0];
+
+    return 10 ** decimals;
   } catch (e) {
     await handleError(chaindata, e, "getDenom", HandlerType.RelayHandler);
     return null;
diff --git a/packages/common/test/scorekeeper/NumNominations.unit.test.ts b/packages/common/test/scorekeeper/NumNominations.unit.test.ts
index e1192c919..9acca94e1 100644
--- a/packages/common/test/scorekeeper/NumNominations.unit.test.ts
+++ b/packages/common/test/scorekeeper/NumNominations.unit.test.ts
@@ -63,6 +63,13 @@ describe("autoNumNominations", () => {
           }),
         },
       },
+      registry: {
+        getChainProperties: vi.fn().mockResolvedValue({
+          tokenDecimals: {
+            toJSON: vi.fn().mockImplementation(() => [10]),
+          },
+        }),
+      },
     });
 
     const relayApiHandler = new ApiHandler(KusamaEndpoints);