deploy ens contract

4_ens.js

/*
  https://www.trufflesuite.com/docs/truffle/getting-started/running-migrations
  https://docs.ens.domains/deploying-ens-on-a-private-chain
  https://www.trufflesuite.com/docs/truffle/reference/truffle-commands#migrate
 */

const utils = require('web3-utils');
const namehash = require('eth-ens-namehash');
const tld = "test";

const ENS = artifacts.require("@ensdomains/ens/ENSRegistry");
const FIFSRegistrar = artifacts.require("@ensdomains/ens/FIFSRegistrar");
const ReverseRegistrar = artifacts.require("@ensdomains/ens/ReverseRegistrar");
const PublicResolver = artifacts.require("@ensdomains/resolver/PublicResolver");

async function setupResolver(ens, resolver, accounts) {
    const resolverNode = namehash.hash("resolver");
    const resolverLabel = utils.sha3("resolver");
  
    await ens.setSubnodeOwner("0x0000000000000000000000000000000000000000", resolverLabel, accounts[0]);
    await ens.setResolver(resolverNode, resolver.address);
    await resolver.setAddr(resolverNode, resolver.address);
}

async function setupRegistrar(ens, registrar) {
    await ens.setSubnodeOwner("0x0000000000000000000000000000000000000000", utils.sha3(tld), registrar.address);
}

async function setupReverseRegistrar(ens, resolver, reverseRegistrar, accounts) {
    await ens.setSubnodeOwner("0x0000000000000000000000000000000000000000", utils.sha3("reverse"), accounts[0]);
    await ens.setSubnodeOwner(namehash.hash("reverse"), utils.sha3("addr"), reverseRegistrar.address);
}

module.exports = async (deployer, network, accounts) => {
    await deployer.deploy(ENS)
    const ens = await ENS.deployed()

    await deployer.deploy(PublicResolver, ens.address)
    const resolver = await PublicResolver.deployed()
    await setupResolver(ens, resolver, accounts)

    await deployer.deploy(FIFSRegistrar, ens.address, namehash.hash(tld))
    const registrar = await FIFSRegistrar.deployed()
    await setupRegistrar(ens, registrar, accounts)

    await deployer.deploy(ReverseRegistrar, ens.address, resolver.address)
    const reverseRegistrar = await ReverseRegistrar.deployed()
    await setupReverseRegistrar(ens, resolver, reverseRegistrar, accounts)
};