secretKey.js

const fs = require('fs');
const path = require('path');
const forge = require('node-forge');

function readFile(file) {
  return fs.readFileSync(path.resolve(__dirname, file), 'utf8');
}

let secretKey;
if (process.env.NODE_ENV === 'production') {
  secretKey = {
    public: readFile('./secret_key.pub'),
    private: readFile('./secret_key')
  };
} else {
  // Generate a random keypair for dev/testing.
  // See https://gist.github.com/sebadoom/2b70969e70db5da9a203bebd9cff099f
  const keypair = forge.rsa.generateKeyPair({ bits: 2048 });
  secretKey = {
    public: forge.pki.publicKeyToPem(keypair.publicKey, 72),
    private: forge.pki.privateKeyToPem(keypair.privateKey, 72)
  };
}

module.exports = secretKey;