From 4232a98bee92175e9b5e676f5bd471a19f5a6e45 Mon Sep 17 00:00:00 2001
From: Francisco de Borja Aranda Castillejo <me@fbac.dev>
Date: Tue, 17 Sep 2024 13:38:10 +0200
Subject: [PATCH] add high level event function

---
 precompiles/bank/const.go           |  2 ++
 precompiles/bank/logs.go            | 38 ++++++++++++++++++++++++++---
 precompiles/bank/method_deposit.go  |  2 +-
 precompiles/bank/method_withdraw.go |  2 +-
 4 files changed, 38 insertions(+), 6 deletions(-)

diff --git a/precompiles/bank/const.go b/precompiles/bank/const.go
index e3c5084652..144c374aa4 100644
--- a/precompiles/bank/const.go
+++ b/precompiles/bank/const.go
@@ -7,9 +7,11 @@ const (
 	// Write methods.
 	DepositMethodName = "deposit"
 	DepositMethodGas  = 200_000
+	DepositEventName  = "Deposit"
 
 	WithdrawMethodName = "withdraw"
 	WithdrawMethodGas  = 200_000
+	WithdrawEventName  = "Withdraw"
 
 	// Read methods.
 	BalanceOfMethodName = "balanceOf"
diff --git a/precompiles/bank/logs.go b/precompiles/bank/logs.go
index f2118ae07f..146d758108 100644
--- a/precompiles/bank/logs.go
+++ b/precompiles/bank/logs.go
@@ -10,10 +10,40 @@ import (
 	"github.com/zeta-chain/node/precompiles/logs"
 )
 
-const (
-	DepositEventName  = "Deposit"
-	WithdrawEventName = "Withdraw"
-)
+func (c *Contract) addEventLog(
+    ctx sdk.Context,
+    stateDB vm.StateDB,
+    eventName string,
+    zrc20Addr common.Address,
+    zrc20Token common.Address,
+    cosmosAddr string,
+    cosmosCoin string,
+    amount *big.Int,
+) error {
+    event := c.Abi().Events[eventName]
+
+    topics, err := logs.MakeTopics(
+        event,
+        []interface{}{common.BytesToAddress(zrc20Addr.Bytes())},
+        []interface{}{common.BytesToAddress(zrc20Token.Bytes())},
+        []interface{}{cosmosCoin},
+    )
+    if err != nil {
+        return err
+    }
+
+    data, err := logs.PackArguments([]logs.Argument{
+        {Type: "string", Value: cosmosAddr},
+        {Type: "uint256", Value: amount},
+    })
+    if err != nil {
+        return err
+    }
+
+    logs.AddLog(ctx, c.Address(), stateDB, topics, data)
+
+    return nil
+}
 
 func (c *Contract) AddDepositLog(
 	ctx sdk.Context,
diff --git a/precompiles/bank/method_deposit.go b/precompiles/bank/method_deposit.go
index d6e5d118ba..88778efdd1 100644
--- a/precompiles/bank/method_deposit.go
+++ b/precompiles/bank/method_deposit.go
@@ -148,7 +148,7 @@ func (c *Contract) deposit(
 		}
 	}
 
-	if err := c.AddDepositLog(ctx, evm.StateDB, caller, zrc20Addr, toAddr.String(), coinSet.Denoms()[0], amount); err != nil {
+	if err := c.addEventLog(ctx, evm.StateDB, DepositEventName, caller, zrc20Addr, toAddr.String(), coinSet.Denoms()[0], amount); err != nil {
 		return nil, &ptypes.ErrUnexpected{
 			When: "AddDepositLog",
 			Got:  err.Error(),
diff --git a/precompiles/bank/method_withdraw.go b/precompiles/bank/method_withdraw.go
index daf19fc1f0..3e3a79063f 100644
--- a/precompiles/bank/method_withdraw.go
+++ b/precompiles/bank/method_withdraw.go
@@ -127,7 +127,7 @@ func (c *Contract) withdraw(
 		}
 	}
 
-	if err := c.AddWithdrawLog(ctx, evm.StateDB, caller, zrc20Addr, fromAddr.String(), coinSet.Denoms()[0], amount); err != nil {
+	if err := c.addEventLog(ctx, evm.StateDB, WithdrawEventName, caller, zrc20Addr, fromAddr.String(), coinSet.Denoms()[0], amount); err != nil {
 		return nil, &ptypes.ErrUnexpected{
 			When: "AddWithdrawLog",
 			Got:  err.Error(),