Getting Data from Firebase

var firebase = require("firebase");
var RSVP = require('rsvp');

exports.getInstance = function(){
  initFirebase()
  return firebase
}

/**Responsible for initalizing firebase database.*/

function initFirebase(){
  var config = {
    apiKey: "AIzaSyB1As1MtKDc7iNA5GEqf0W6f_k1bQNzJFE",
    authDomain: "summerhousing-5c0cf.firebaseapp.com",
    databaseURL: "https://summerhousing-5c0cf.firebaseio.com",
    projectId: "summerhousing-5c0cf",
    storageBucket: "summerhousing-5c0cf.appspot.com",
    messagingSenderId: "493524743868"
  };
  firebase.initializeApp(config);
}


/**Helper for getting collections*/
exports.getCollection =  function (collectionName){
    var promise = new RSVP.Promise(function(fulfill, reject) {
    firebase.database().ref(collectionName).on("value", function(snapshot) {
        // console.log(snapshot);
        let array = []
        // let colleges = snapshot.val();

        snapshot.forEach(function(snap){
            var el = snap.val()
            el.key = snap.key
            array.push(el)
          });
          fulfill(array)
      });
    });
    return promise
  }