@apolitical/server/src/helpers/jwt/encode.helper.js

Node.js module to encapsulate Apolitical's express server setup

'use strict';

const TIME_CONVERTION = 1000; // 1 second in milliseconds
const EXPIRATION_LAPSE = 30 * 24 * 3600; // 30 days in seconds

module.exports = ({ jsrsasign, config }) => {
  const { sign } = jsrsasign.jws.JWS;
  const { ALGORITHM, HEADER, DEFAULT_PAYLOAD } = config.JWT.ENCODE;

  function buildPayload(customPayload) {
    const exp = Math.floor(Date.now() / TIME_CONVERTION) + EXPIRATION_LAPSE;
    return Object.assign({}, DEFAULT_PAYLOAD, { exp }, customPayload);
  }

  function encode(secret, customPayload = {}) {
    const payload = buildPayload(customPayload);
    return sign(ALGORITHM, HEADER, payload, secret);
  }

  return encode;
};