Loading ETH automatically using ethers

[seanrasku]

I'm taking the knowledge I learned here and trying to write my own app, but find trouble deploying a contract because it wants ETH already in the account to account for gas before deployment. Is there a way to write a JS function that will get enough ETH into the Goerli wallet before contract deployment so I don't get the error "gas required exceeds allowance (0)"?

[paulcoffee85]

Here's a sample code, you can customize to produce function to fit your project:

async function fundAccount(wallet, amount) {
  // Connect to the Goerli test network
  const provider = new ethers.providers.JsonRpcProvider("https://goerli.infura.io/v3/<INFURA_PROJECT_ID>");

  // Send Ether to the account
  const tx = {
    to: wallet.address,
    value: ethers.utils.parseEther(amount),
  };
  const signer = wallet.connect(provider);
  const receipt = await signer.sendTransaction(tx);

  // Wait for the transaction to be mined
  await receipt.wait();
}

async function deployContract() {
  // Initialize a Hardhat network provider
  const provider = ethers.getDefaultProvider("goerli");

  // Create a new wallet
  const wallet = ethers.Wallet.createRandom();

  // Fund the account with 0.1 ETH
  await fundAccount(wallet, "0.1");

  // Deploy the contract using the wallet
  const factory = await ethers.getContractFactory("MyContract");
  const contract = await factory.connect(wallet).deploy();

  console.log("Contract deployed to:", contract.address);
}

deployContract();

[seanrasku]

I see what you're doing here, but this only works if you have testnet ETH already in the account. I'm wondering how to send ether to a wallet address when there is 0 ether in the sender account (aka not enough for gas). Do I need to manually grab ether from goerlifaucet, or is there a more practical way? I'm hesitant to do the manual way because the sender wallet is being created inside a function, and if I did it manually, whoever logged in would need to then follow instructions to load their own account instead of the app doing it for them.

[paulcoffee85]

Although I'm not sure how well it's gonna work with Goerli at this time but is this more what you're looking for ?

const fetch = require('node-fetch');

const INFURA_API_KEY = 'YOUR_INFURA_API_KEY';
const GOERLI_FAUCET_URL = 'https://goerli.infura.io/v3/' + INFURA_API_KEY;

// Ethereum address to fund
const ADDRESS_TO_FUND = 'addressToFund';

// Request ether from Goerli faucet
async function requestEtherFromFaucet() {
  const response = await fetch(GOERLI_FAUCET_URL, {
    method: 'POST',
    body: JSON.stringify({ jsonrpc: '2.0', method: 'eth_requestFaucet', params: [ADDRESS_TO_FUND], id: 1 }),
    headers: { 'Content-Type': 'application/json' }
  });
  const json = await response.json();
  console.log(json);
}

requestEtherFromFaucet();