Create second flavor of "buildContractCall" to do it viem-style

src/helpers/crypto.ts

@@ -12,6 +12,8 @@ import {
   bytesToBigInt,
   Hex,
   isHex,
+  encodeFunctionData,
+  Abi,
 } from 'viem';
 import { ContractConnection } from '../types';
 import { MetaTransaction, SafePostTransaction, SafeTransaction } from '../types/transaction';
@@ -161,20 +163,18 @@ export const buildSafeAPIPost = async (
   };
 };
 
-export const buildContractCall = (
-  contract: Contract,
-  method: string,
-  params: any[],
+const finishBuildingConractCall = (
+  data: Hex,
   nonce: number,
+  contractAddress: Address,
   delegateCall?: boolean,
   overrides?: Partial<SafeTransaction>,
-): SafeTransaction => {
-  const data = contract.interface.encodeFunctionData(method, params);
+) => {
   const operation: 0 | 1 = delegateCall ? 1 : 0;
   return buildSafeTransaction(
     Object.assign(
       {
-        to: contract.address,
+        to: contractAddress,
         data,
         operation,
         nonce,
@@ -184,6 +184,45 @@ export const buildContractCall = (
   );
 };
 
+export const buildContractCall = (
+  contract: Contract,
+  method: string,
+  params: any[],
+  nonce: number,
+  delegateCall?: boolean,
+  overrides?: Partial<SafeTransaction>,
+): SafeTransaction => {
+  const data = contract.interface.encodeFunctionData(method, params);
+  if (!isHex(data)) {
+    throw new Error('encoded function data not hexadecimal');
+  }
+  return finishBuildingConractCall(
+    data,
+    nonce,
+    getAddress(contract.address),
+    delegateCall,
+    overrides,
+  );
+};
+
+export const buildContractCallViem = (
+  contractAbi: Abi,
+  contractAddress: Address,
+  method: string,
+  params: any[],
+  nonce: number,
+  delegateCall?: boolean,
+  overrides?: Partial<SafeTransaction>,
+): SafeTransaction => {
+  const data = encodeFunctionData({
+    abi: contractAbi,
+    functionName: method,
+    args: params,
+  });
+
+  return finishBuildingConractCall(data, nonce, contractAddress, delegateCall, overrides);
+};
+
 const encodeMetaTransaction = (tx: MetaTransaction): string => {
   const txDataBytes = toBytes(tx.data);
   const txDataHex = toHex(txDataBytes);