Contract Call

Call contract on different destination chain

The performCheckout function enables developers to call a contract on a different destination chain. For example, if a user has funds on arbitrum and wants to call a contract on polygon, they can easily do so using the performCheckout function.

Expected parameters

performCheckout accepts following parameters

ethers.js

Parameter	Type	Description
senderSigner	ethers.Signer	The signer object from ethers
fromChainId	number	Source chain id
fromTokenAddress	string	address of initial token on source chain
toChainId	number	Chain id of the destination chain
toTokenAddress	string	Address of the final token on the destination chain.
fromAddress	string	Address of source chain from which smart contract is being called
toAmount	string	Amount needs to be send to destination chain for contract call.
targetContractAddress	string	Smart contract address of destination chain.
destinationPayload	string	Call data of a contract call
routeType [Optional]	string	The type of route to be preferred. It can be Value,Fee and Time, default route is Value
destinationGasLimit	number	The gas limit on the destination chain.
estimateGas [Optional]	boolean	Default is set to true. If you don't want to estimate gas on the backend.

viem

Parameter	Type	Description
senderSigner	WalletClient	The walletClient object from viem
fromChainId	number	Source chain id
fromTokenAddress	string	address of initial token on source chain
toChainId	number	Chain id of the destination chain
toTokenAddress	string	Address of the final token on the destination chain.
fromAddress	string	Address of source chain from which smart contract is being called
toAmount	string	Amount needs to be send to destination chain for contract call.
targetContractAddress	string	Smart contract address of destination chain.
destinationPayload	string	Calldata of a contract call
routeType [Optional]	string	The type of route to be preferred. It can be Value,Fee and Time
destinationGasLimit	number	The gas limit on the destination chain.
estimateGas [Optional]	boolean	Default is set to true. If you don't want to estimate gas on the backend.

Function Call

performCheckout function will initiate all required transactions on source chain such as getting an approval and sending tokens and calling contract on destination chain.

ethers.js

const provider = new ethers.BrowserProvider(window.ethereum);
const signer = await provider.getSigner();

const address = signer.getAddress();
const contractInterface = new ethers.Interface(ABI); // create interface with your own ABI

const destinationPayload = contractInterface.encodeFunctionData("mint", [
  address,
  1000000000000,
]); // Replace with your own function name and parameters

const tx = await aarcSDK.performCheckout({
  toChainId: polygon.id,
  fromChainId: arbitrum.id,
  destinationPayload,
  destinationGasLimit: 2000000, // Change gas limit as per your requirement
  fromAddress: address, 
  toTokenAddress: "0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174", // Replace with your token Address
  fromTokenAddress: "0x912CE59144191C1204E64559FE8253a0e49E6548", // Replace with your token Address
  targetContractAddress: "0x6D8473f39AB16b7aE854d90acDcCDC83fa3A32b4", // Replace with your contract Address
  senderSigner: signer,
  toAmount: "10000000", // Amount of token needs to be send to contract
});

console.log('tx', tx);

viem

import { createWalletClient, custom } from "viem";

const getWalletClient = async () => {
  const [account] = await window.ethereum.request({
    method: "eth_requestAccounts",
  });
  const walletClient = createWalletClient({
    chain: arbitrum,
    account,
    transport: custom(window.ethereum!),
  });
  return walletClient;
};

const wallet = await getWalletClient();

const [address] = await wallet.requestAddresses();

const destinationPayload = encodeFunctionData({
  abi: ABI, // Replace with your ABI
  functionName: "mint",
  args: [address, 1000000000000],
}); // Replace with your own function name and parameters

const tx = await aarcSDK.performCheckout({
  toChainId: polygon.id,
  fromChainId: arbitrum.id,
  destinationPayload,
  destinationGasLimit: 2000000, // Change gas limit as per your requirement
  fromAddress: address, 
  toTokenAddress: "0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174", // Replace with your token Address
  fromTokenAddress: "0x912CE59144191C1204E64559FE8253a0e49E6548", // Replace with your token Address
  targetContractAddress: "0x6D8473f39AB16b7aE854d90acDcCDC83fa3A32b4", // Replace with your contract Address
  senderSigner: wallet as any,
  toAmount: "10000000", // Amount of token needs to be send to contract
});

console.log('tx', tx);