// Import required libraries.
const { ethers } = require('ethers');

async function main() {
    // Connect to MetaMask (replace with real address).
    const provider = await new ethers.providers.Web3Provider(window.ethereum);
    
    // Get the signer for signing transactions, etc...
    const wallet = provider.getSigner();
    
    console.log(wallet.address);

    try {
        // Create a contract instance.
        const WalletContract = require("./Wallet.json");
        
        const contractAddress = "0x...your-contract-address...";
        let contractInstance;
        
        if (contractAddress) {
            contractInstance = new ethers.Contract(contractAddress, WalletContract.abi);
            
            console.log("Connected to the deployed smart contract.");
        } else {
            // If you don't have a deployed address yet...
            const walletFactory = await hre.ethers.getSigner(wallet.address).deployed();
            let factoryDeployTransaction;
            
            if (walletFactory) {
                factoryDeployTransaction =
                    await new ethers.Contract(
                        "0x...your-wallet-factory-address...",
                        WalletContract.abi,
                        provider
                    ).connect(hre.ethers.provider);
                
                console.log("Connected to the wallet Factory.");
            } else {
                // If you don't have a deployed address yet...
                const contractDeploymentTransaction =
                    await new ethers.Contract(
                        "0x...your-wallet-factory-address...",
                        WalletContract.abi,
                        provider
                    ).connect(hre.ethers.provider).deploy();
                
                console.log("Deployed the smart contract.");
            }
        }

    } catch (error) {
        // Handle errors.
        console.error(error);
        
        return false;
    }

}

main().catch((e) => process.exit(1));

<script src="https://cdn.jsdelivr.net/npm/web3@0.2.x/dist/web3.min.js"></script>