Approving a contract to "transferFrom" token from the Smart contarct Wallet.

approve.js

import {ethers} from "ethers";
import ERC20ABI from "../assets/abi/ERC20ABI.json";
import {
  EntryPointAddress,
  PIMLICO_URL,
} from "../assets/data";
import {
  getUserOperation,
  getSignedUserOp,
  CustomJsonRpcProvider,
  waitForReceipt,
} from "vice-aa";


async function tokenApprove(SCWAddress,token,toApprove) {
  
  // get smart contract wallet address using getSCWallet function in vice-aa e.g:  const SCWAddress = await getSCWallet(userAddress);

    const provider = new ethers.providers.Web3Provider(window.ethereum);
    const contract = new ethers.Contract(token, ERC20ABI, provider);

    const Paymaster_URL = "https://vice-aa-api.vercel.app/paymaster";


    const minTx = await contract.populateTransaction.approve(
      toApprove,
      ethers.utils.parseEther(ethers.constants.MaxUint256)
    );

    const userOperation = await getUserOperation(
      SCWAddress,
      token,
      minTx,
      Paymaster_URL,
      PIMLICO_URL
    );

    console.log("SignedUserOp ");

    const signedUserOp = await getSignedUserOp(
      userOperation,
      Paymaster_URL,
      true
    );
    console.log("signedUserOp : ", signedUserOp);
    try{
      const customProvider = new CustomJsonRpcProvider(PIMLICO_URL);
      const userOpHash = await customProvider.sendUserOperation(
        userOperation,
        EntryPointAddress
      );

      console.log("User Operation Hash:", userOpHash);
   
      const txHash = await waitForReceipt(customProvider, userOpHash);
      console.log("txHash : ", txHash);
      return txHash;

    }catch(e){
            console.error("approve err: ",e);
        }

}

export default tokenApprove;