fix: preHook fundToken alloance and approval

0xsquid · Jun 24, 2024 · 28c5eab · 28c5eab
1 parent 584bc65
commit 28c5eab
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/src/handlers/evm/index.ts b/src/handlers/evm/index.ts
@@ -309,7 +309,7 @@ export class EvmHandler extends Utils {
     params: RouteRequest,
     signer?: EvmWallet,
   ): RouteParamsPopulated {
-    const { fromChain, toChain, fromToken, toToken } = params;
+    const { fromChain, toChain, fromToken, toToken, preHook } = params;
 
     const _fromChain = tokensChains.getChainData(fromChain);
     const _toChain = tokensChains.getChainData(toChain);
@@ -322,8 +322,11 @@ export class EvmHandler extends Utils {
     let fromTokenContract;
 
     if (!fromIsNative) {
+      // case preHook, we need to check balance / allowance instead of fromToken
+      // to avoid changing the entire approach, we only inject the address on the contract instance for on chain validation
+      // need to be considered that fundToken is unknown and we probably do not support
       fromTokenContract = ethersAdapter.contract(
-        _fromToken.address,
+        preHook ? preHook.fundToken : _fromToken.address, 
         erc20Abi,
         signer || fromProvider,
       );