Get the contract addresses needed for the RNS Manager after running the RNS suite migration

getConfig.js

// Procedrual script that gets the contract addresses from the build 
// folder after migration. This file can be used inside of the RNS 
// Manager React application to use the local RKS network.
// The code isn't pretty, but it works.
// 
// TO RUN: 
// Set the two variables below, and then in the console, run:
//    node getConfig.js
//
// the output is a json script that can be copied and pasted into the
// RNS manager config file.
//
// VARIABLES:

var contractFolder = 'rns-suite/build/contracts/';
var port = '8545';

// end config

var fs = require('fs');

var rns = JSON.parse(fs.readFileSync(contractFolder + 'RNS.json', 'utf8'));
var registrar = JSON.parse(fs.readFileSync(contractFolder + 'TokenRegistrar.json', 'utf8'));
var reverseRegistrar = JSON.parse(fs.readFileSync(contractFolder + 'ReverseRegistrar.json', 'utf8'));
var publicResolver = JSON.parse(fs.readFileSync(contractFolder + 'PublicResolver.json', 'utf8'));
var nameResolver = JSON.parse(fs.readFileSync(contractFolder + 'NameResolver.json', 'utf8'));
var multiChainResolver = JSON.parse(fs.readFileSync(contractFolder + 'MultiChainResolver.json', 'utf8'));
var rif = JSON.parse(fs.readFileSync(contractFolder + 'ERC677.json', 'utf8'));
var fifsRegistrar = JSON.parse(fs.readFileSync(contractFolder + 'FIFSRegistrar.json', 'utf8'));
var fifsAddrRegistrar = JSON.parse(fs.readFileSync(contractFolder + 'FIFSAddrRegistrar.json', 'utf8'));
var rskOwner = JSON.parse(fs.readFileSync(contractFolder + 'RSKOwner.json', 'utf8'));
var renewer = JSON.parse(fs.readFileSync(contractFolder + 'Renewer.json', 'utf8'));

function getAddress(file){
  return file.networks[port].address.toLowerCase();
}

console.log(' ');
console.log('{');
console.log(` "rns": "${getAddress(rns)}",`);
console.log(` "registrar": "${getAddress(registrar)}",`);
console.log(` "reverseRegistrar": "${getAddress(reverseRegistrar)}",`);
console.log(` "publicResolver": "${getAddress(publicResolver)}",`);
console.log(` "nameResolver": "${getAddress(nameResolver)}",`);
console.log(` "multiChainResolver": "${getAddress(multiChainResolver)}",`);
console.log(` "rif": "${getAddress(rif)}",`);
console.log(` "fifsRegistrar": "${getAddress(fifsRegistrar)}",`);
console.log(` "fifsAddrRegistrar": "${getAddress(fifsAddrRegistrar)}",`);
console.log(` "rskOwner": "${getAddress(rskOwner)}",`);
console.log(` "renewer": "${getAddress(renewer)}",`);
console.log(` "stringResolver": "",`);
console.log(` "definitiveResolver": ""`);
console.log('}');

console.log(' ');

Updates

• Jan 27, 2020 - Removed gasPrice from contract since this is handled by the environment variable.
• Jan 29, 2020 - Removed trailing comma from renewer line
• Feb 12, 2020 - Added additional contracts and created helper function to retrieve the address and convert to lowercase.
• May 19, 2020 - Added field for definitiveResolver. This contract needs to be migrated separately.