From 48e53924e8c1fe9559b05a14331af5d3e8c5f32e Mon Sep 17 00:00:00 2001
From: Tanmay <tanmay.bhattacharya.smit@gmail.com>
Date: Wed, 4 Dec 2024 17:53:33 -0500
Subject: [PATCH] update operation whitelist erc20 to not try whitelisting
 duplicate assets

---
 x/crosschain/genesis.go                              |  3 ---
 x/crosschain/simulation/operation_whitelist_erc20.go | 11 +++++++++++
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/x/crosschain/genesis.go b/x/crosschain/genesis.go
index 17ecf9bc07..aa96120198 100644
--- a/x/crosschain/genesis.go
+++ b/x/crosschain/genesis.go
@@ -1,11 +1,8 @@
 package crosschain
 
 import (
-	"fmt"
-
 	sdkmath "cosmossdk.io/math"
 	sdk "github.com/cosmos/cosmos-sdk/types"
-	"github.com/zeta-chain/node/pkg/coin"
 
 	"github.com/zeta-chain/node/x/crosschain/keeper"
 	"github.com/zeta-chain/node/x/crosschain/types"
diff --git a/x/crosschain/simulation/operation_whitelist_erc20.go b/x/crosschain/simulation/operation_whitelist_erc20.go
index efa5b894d1..a0fade8955 100644
--- a/x/crosschain/simulation/operation_whitelist_erc20.go
+++ b/x/crosschain/simulation/operation_whitelist_erc20.go
@@ -87,6 +87,17 @@ func SimulateMsgWhitelistERC20(k keeper.Keeper) simtypes.Operation {
 			), nil, nil
 		}
 
+		foreignCoins := k.GetFungibleKeeper().GetAllForeignCoins(ctx)
+		for _, fCoin := range foreignCoins {
+			if fCoin.Asset == tokenAddress && fCoin.ForeignChainId == randomChain.ChainId {
+				return simtypes.NoOpMsg(
+					types.ModuleName,
+					types.TypeMsgWhitelistERC20,
+					"ERC20 already whitelisted",
+				), nil, nil
+			}
+		}
+
 		gasLimit := r.Int63n(1000000000) + 1
 		nameLength := r.Intn(97) + 3
 		msg := types.MsgWhitelistERC20{