testSponsoredGetDataToSignERC2771.ts

import {
  CallWithERC2771Request,
  ERC2771Type,
  GelatoRelay
} from "@gelatonetwork/relay-sdk";
import { ethers } from "ethers";
import * as dotenv from "dotenv";


dotenv.config({ path: ".env" });

const ROOTSTOCK_ID = process.env.ROOTSTOCK_ID;
const GELATO_RELAY_API_KEY = process.env.GELATO_RELAY_API_KEY;

const RPC_URL = `https://rpc.mainnet.rootstock.io/${ROOTSTOCK_ID}`;

const provider = new ethers.JsonRpcProvider(RPC_URL);
const signer = new ethers.Wallet(process.env.PRIVATE_KEY as string, provider);

const relay = new GelatoRelay();

const testSponsoredGetDataToSignERC2771 = async () => {
  const counter = "0x00172f67db60E5fA346e599cdE675f0ca213b47b";
  const abi = ["function increment()"];

  const user = await signer.getAddress();

  const chainId = (await provider.getNetwork()).chainId;

  // Generate the target payload
  const contract = new ethers.Contract(counter, abi, signer);
  const { data } = await contract.increment.populateTransaction();

  // Populate a relay request
  const request: CallWithERC2771Request = {
    chainId,
    target: counter,
    data: data as string,
    user: user as string,
  };

  console.log(request)
  const { struct, typedData } = await relay.getDataToSignERC2771(
    request,
    ERC2771Type.SponsoredCall,
    signer
  );
 
    console.log(typedData);
    console.log(typedData.types);

  const signature = await signer.signTypedData(
    typedData.domain,
    typedData.types,
    typedData.message
  );

  const response = await relay.sponsoredCallERC2771WithSignature(
    struct,
    signature,
    GELATO_RELAY_API_KEY!
  );

  console.log(`https://relay.gelato.digital/tasks/status/${response.taskId}`);
};

testSponsoredGetDataToSignERC2771();