Commit and regsiter ENS domain on Goerli network

ens-commit-register.ts

import { ethers, Wallet } from 'ethers'


// const ALCHEMY_URL = `https://eth-goerli.g.alchemy.com/v2/${process.env.NEXT_PUBLIC_ALCHEMY_API_KEY!}`
const ETH_REGISTRAR_ADDRESS = '0x283Af0B28c62C092C9727F1Ee09c02CA627EB7F5' // goerli
const ETH_REGISTRAR_ABI = [
  'function available(string) view returns (bool)',
  'function makeCommitment(string,address,bytes32) pure returns (bytes32)',
  'function commit(bytes32)',
  'function register(string,address,uint256,bytes32) payable',
]


const randomSecret = () => {
  const bytes = Buffer.allocUnsafe(32)
  return `0x${crypto.getRandomValues(bytes).toString('hex')}`
}

async function commitAndRegister() {

  // init ethers
  // const provider = new ethers.providers.JsonRpcProvider(ALCHEMY_URL)
  const provider = new ethers.providers.Web3Provider(window.ethereum!)
  const signer = provider.getSigner()
  const _contract = new ethers.Contract(ETH_REGISTRAR_ADDRESS, ETH_REGISTRAR_ABI, provider)
  const contract = _contract.connect(signer)

  // params
  const name = 'dowjones'
  const owner = await signer.getAddress()
  const secret = randomSecret()
  const duration = 60 * 60 * 24 * 365 // 31536000 seconds = 1 year
  const valueEth = ethers.utils.parseEther('1.0') // extra ether gets returned

  // check name available
  const available = await contract.available(name)
  console.log(`${name}.eth is ${available ? 'available' : 'taken'}`)
  if (!available) return

  // 1. generate a commitment hash from the name they want to register and a secret value
  const commitmentHash = await contract.makeCommitment(name, owner, secret)
  console.log(`commitment created:\n name = ${name}\n owner = ${owner}\n secret = ${secret}\n commitmentHash = ${commitmentHash}`)

  // 2. submit the commitment hash from #1 to the controller
  let tx = await contract.commit(commitmentHash)
  let txHash = (await tx.wait()).transactionHash
  console.log(`commitment sent: tx = ${txHash}`)

  // 3. wait for at least 1 minute
  console.log(`waiting for 1 sec...`)
  await (new Promise((resolve) => setTimeout(resolve, 65 * 1000)))

  // 4. submit a registration request for the name, along with the secret value from #1
  tx = await contract.register(name, owner, duration, secret, {
    value: valueEth
  })
  txHash = (await tx.wait()).transactionHash
  console.log(`registration sent: tx = ${txHash}`)
}