import { MongoClient } from 'mongodb';
/*
console.log('connecting to ' + process.env.MONGO_CONN_STR);
const 
*/
let mongo;
let db;
let functionCollection = {};

export function init(connectionString) {
  console.log(connectionString);
  mongo = new MongoClient(connectionString);
  mongo.connect().catch(e => {throw e});
  db = mongo.db();

  return functionCollection;
}

functionCollection.subsribe = function subsribe (b) {
  let collection = db.collection(b);
  collection.find({}, {}).toArray().then(r => console.log);
}

functionCollection.persist = function persist (b) {
  console.log('persist');
}

functionCollection.publish = function publish (b) {
  console.log('publish')
}