Register a subdomain

[pikonha]

I'm looking for ways to register a subdomain of an ENS domain which isn't supported by this library yet.

if (nameType !== 'eth-2ld')
  throw new UnsupportedNameTypeError({
    nameType,
    supportedNameTypes: ['eth-2ld'],
    details: 'Only 2ld-eth name registration is supported',
  })

Is it something expected to be supported soon? If so, I'd be down to work on it.

[pikonha]

The way I thought of implementing it is through the NameWrapper setSubnodeRecord function like so:

export const makeFunctionData = <
  TChain extends ChainWithEns,
  TAccount extends Account | undefined,
>(
  wallet: ClientWithAccount<Transport, TChain, TAccount>,
  { value, ...args }: RegisterNameDataParameters,
): RegisterNameDataReturnType => {
  const nameType = getNameType(args.name)

  switch (nameType) {
    case 'eth-2ld': {
      const labels = args.name.split('.')
      wrappedLabelLengthCheck(labels[0])

      return {
        to: getChainContractAddress({
          client: wallet,
          contract: 'ensEthRegistrarController',
        }),
        data: encodeFunctionData({
          abi: ethRegistrarControllerRegisterSnippet,
          functionName: 'register',
          args: makeRegistrationTuple(args),
        }),
        value,
      }
    }
    case 'eth-subname': {
      return {
        to: getChainContractAddress({
          client: wallet,
          contract: 'ensNameWrapper',
        }),
        data: encodeFunctionData({
          abi: nameWrapperSetSubnodeRecordSnippet,
          functionName: 'setSubnodeRecord',
          args: makeSubdomainRegistrationTuple(args),
        }),
        value,
      }
    }
    default:
      throw new UnsupportedNameTypeError({
        nameType,
        supportedNameTypes: ['eth-2ld', 'eth-subname'],
        details: 'Unsupported name type',
      })
  }
}