katowulf

   /**
    * A diff utility that compares arrays and returns a list of added, removed, and updated items
    * 
    * Returns an object with two methods:
    *    diff:  do a one-time diff of two arrays
    *    watch: observe a variable on scope and report any changes to a callback
    * 
    * Invoking the factory is done like so:
    * <code>
    *    function(listDiff) {

katowulf

// Helper function to extract claims from a JWT. Does *not* verify the
// validity of the token. 
// credits: https://github.com/firebase/angularFire/blob/master/angularFire.js#L370
// polyfill window.atob() for IE8: https://github.com/davidchambers/Base64.js
// or really fast Base64 by Fred Palmer: https://code.google.com/p/javascriptbase64/
function deconstructJWT(token) {
   var segments = token.split(".");
   if (!segments instanceof Array || segments.length !== 3) {
      throw new Error("Invalid JWT");
   }

katowulf

// assumes you add a timestamp field to each record (see Firebase.ServerValue.TIMESTAMP)
// pros: fast and done server-side (less bandwidth, faster response), simple
// cons: a few bytes on each record for the timestamp
var ref = new Firebase(...);
ref.orderByChild('timestamp').startAt(Date.now()).on('child_added', function(snapshot) {
  console.log('new record', snap.key());
});

katowulf

/***************************************************
 * Simple and elegant, no code complexity
 * Disadvantages: Requires warming all data into server memory (could take a long time for MBs of data or millions of records)
 * (This disadvantage should go away as we add optimizations to the core product)
 ***************************************************/
 
var fb = firebase.database.ref();

/**
 * @param {string} emailAddress

katowulf

function extend(base) {
    var parts = Array.prototype.slice.call(arguments, 1);
    parts.forEach(function (p) {
        if (p && typeof (p) === 'object') {
            for (var k in p) {
                if (p.hasOwnProperty(k)) {
                    base[k] = p[k];
                }
            }
        }

katowulf

/**
 * My Firebase data structure:
 * 
 *   /email_index/$email/user_id
 *   /user/$user_id/email
 */

var fb = new Firebase(URL);

function isDuplicateEmail(email, callback) {

katowulf

// UNTESTED; THEORETICAL, based on http://docs.urbanairship.com/connect/ios_push.html

https://github.com/mikeal/request
var request = require('request');

/** Presumably the snapshot will contain something like this:
 * 
 {
   "audience": {"device_token": "FE66489F304DC75B8D6E8200DFF8A456E8DAEACEC428B427E9518741C92C6660"},
   "notification": {

katowulf

'use strict';

/**
 * This module monitors angularFire's authentication and performs actions based on authentication state.
 * directives/directive.ngcloakauth.js depends on this file
 *
 * Modify ng-cloak to hide content until FirebaseSimpleLogin resolves. Also
 * provides ng-show-auth methods for displaying content only when certain login
 * states are active.
 *

katowulf

/*********************
 ** I Dream in Code **
 *********************/

while( I .sleep() ) {
   I.dream() in code;
   I.dream() in algorithms;
   I.dream() in subroutines;
   
   Rewind.age(5) && I.dream.of(["missing pants", "driving hotwheels", "peeing in fountains"]) ); //hint: it’s my bed

katowulf

/**
 *  This little helper is called instead of on() to monitor data and handle auth expiration
 *  It assumes that you monitor authentication state and re-auth if
 *  your auth token expires. It also doesn't help with any transactions, set ops, or
 *  other writes which could be in progress when authentication is lost--those will
 *  explode in glorious flashes of failure
 *
 *  To support IE8, you will want these polyfills:
 *  forEach: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach#Polyfill
 *  indexOf: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf#Polyfill