mongo-connection-string-builder/index.js

module to provide you mongo connection string based on ENV variables for username and password along with setting options

var url = require('url');

var noOptions = {};

function getCredentials() {
  if(process.env.MONGO_USER &&  process.env.MONGO_PASSWORD) {
    return process.env.MONGO_USER + ":" + process.env.MONGO_PASSWORD;
  }
  return "";
}

function getAuthenticatedConnectionString(baseMongoUrl, options) {

 var options = options || noOptions
 var userCredentials = getCredentials();
 baseMongoUrl = baseMongoUrl.replace(/,/g, '_comma_');
 var theUrl = url.parse(baseMongoUrl, true);

 var newUrl = {
   protocol: theUrl.protocol,
   host: theUrl.host,
   pathname: theUrl.pathname,
   slashes: true,
   query : Object.assign({}, theUrl.query, options),
   auth : userCredentials
 }

 return url.format(newUrl).replace(/_comma_/g, ',');
}

module.exports = {
  getAuthenticatedConnectionString: getAuthenticatedConnectionString
}