index.js

const wormholeSdk = require('@certusone/wormhole-sdk');
const contracts = require('./contracts.json');
const ethers = require('ethers');
const { extractCctpMessages } = require('./cctp');
const inspect = require('util').inspect;

const PRIVATE_KEY = '0x...'; // Replace with your private key
const destinationChainProvider = new ethers.providers.JsonRpcProvider('https://mainnet.infura.io/v3/YOUR_INFURA_PROJECT_ID'); // Replace with your RPC endpoint
const wallet = new ethers.Wallet(PRIVATE_KEY, destinationChainProvider);

function getTargetRelayerContractAddress(targetChainId) {
    const targetContractAddress = contracts.find(
        (contract) => contract.chainId === targetChainId
    ).address;
    if (!targetContractAddress) {
        throw new Error(`No relayer contract found for chain ID ${targetChainId}`);
    }
    return targetContractAddress;
}

async function main() {
    const base64VAA = 'AgAAAA...'; // Replace with your actual base64-encoded VAA
    const targetWormholeChainId = 1; // Replace with the target Wormhole chain ID

    const signedVaa = Buffer.from(base64VAA, 'base64');

    const targetRelayerSmartContractAddress = getTargetRelayerContractAddress(targetWormholeChainId);

    const wormholeRelayerSmartContract = wormholeSdk.ethers_relayer_contracts.WormholeRelayer__factory.connect(
        targetRelayerSmartContractAddress,
        targetWormholeChainId
    );

    /**
     * Supported messages: VAA and CCTP Messages.
     * @type {(wormholeSdk.SignedVaa | string)[]}
     */
    const additionalMessages = [];

    // // Fetch CCTP messages and their attestations for the source transaction hash included in the VAA
    // if (true) {
    //     const sourceTxHash = '0x...'; // Replace with the source transaction hash containing the CCTP message
    //     const vaaEmitterChainId = 1; // Replace with the Wormhole chain ID of the VAA emitter
    //     const deliveryMessageKeys = [
    //         // Replace with the actual delivery message keys from the DeliveryInstruction
    //         {
    //             keyType: wormholeSdk.relayer.KeyType.CCTP,
    //             key: '0x...', // Replace with the actual key
    //         },
    //     ];
    //     const sourceChainProvider = new ethers.providers.JsonRpcProvider('https://mainnet.infura.io/v3/YOUR_INFURA_PROJECT_ID'); // Replace with the RPC endpoint of the source chain
    //     const cctpMessages = await extractCctpMessages(sourceChainProvider, sourceTxHash, vaaEmitterChainId, deliveryMessageKeys);
    //     additionalMessages.push(...cctpMessages);
    // }

    /**
     * You can override internal gas limit here
     * @type {wormholeSdk.relayer.DeliveryOverrideArgs}
     */
    const deliveryOverrides = undefined;

    const gasUnitEstimate = await wormholeRelayerSmartContract.estimateGas.deliver(
        additionalMessages,
        signedVaa,
        wallet.address,
        deliveryOverrides ? wormholeSdk.relayer.packOverrides(deliveryOverrides) : [],
        undefined
    );

    /**
     * @type {ethers.PayableOverrides}
     */
    const overrides = {
        gasLimit: gasUnitEstimate
    }

    const txWithCallData = await wormholeRelayerSmartContract.populateTransaction.deliver(
        additionalMessages,
        signedVaa,
        wallet.address,
        deliveryOverrides ? wormholeSdk.relayer.packOverrides(deliveryOverrides) : [],
        overrides
    );

    const txWithMetadata = await wallet.populateTransaction(txWithCallData);
    const txReceipt = await wallet.sendTransaction(txWithMetadata);

    await txReceipt.wait(2);

    console.log('Transaction receipt:', inspect(txReceipt));
}

main().catch((error) => {
    console.error('Error:', error);
    process.exit(1);
});