Stackmob & Appcelerator File Upload with Amazon S3

app.js

//include StackMob & credentials module
var credentials = require('credentials').C;
var stackmob = require('stackmob-module.min');

//create StackMob Client
var client = new stackmob.Client(credentials.STACKMOB_APP_NAME, credentials.STACKMOB_PUBLIC_KEY, credentials.STACKMOB_PRIVATE_KEY, credentials.STACKMOB_USER_OBJECT_NAME);

//login the user
client.login({
	'username' : "aaron-B1FBD26C-89B1-49E3-B4C4-F319493324DB",
	'password' : "password",
	success : function(data) {
		Ti.API.info("login " + JSON.stringify(data));
		uploadImage("aaron-B1FBD26C-89B1-49E3-B4C4-F319493324DB");
	},
	error : function(data) {
		Ti.API.error("ERROR:login " + JSON.stringify(JSON.parse(data.text)));
	}
});

/** ----------------------------------------------------------------------
 *
 * take the file and set it up for getting uploaded to StackMob
 *
 * this file needs to be uploaded in base64 format for it to work
 * correctly
 *
 ---------------------------------------------------------------------- */
var base64FromFile = function(fn) {
	var template, content, f;
	f = Ti.Filesystem.getFile(fn);
	content = f.read();

	// for string to pass base64 encoded data
	template = "Content-Type: %s\nContent-Disposition: attachment; filename=%s\nContent-Transfer-Encoding: base64\n\n%s"

	// this worked for me
	if(Titanium.Platform.osname == 'android') {
		return String.format(template, content.mimeType, fn, content.toBase64());
	} else {
		return String.format(template, content.mimeType, fn, Titanium.Utils.base64encode(content));
	}
};
/** ----------------------------------------------------------------------
 *
 * upload and image and associate it to the user, we add the user id
 * to the object so we can query for the photos based on the user
 * relationship
 *
 ---------------------------------------------------------------------- */
var uploadImage = function(userData) {

	var params = {
		'data' : base64FromFile("3f34141.jpg"),
		'user' : userData,
		'caption' : "test caption " + new Date()
	};
	client.create({
		className : 'photo',
		params : params,
		success : function(data) {
			Ti.API.info("create photo " + JSON.stringify(JSON.parse(data.text)));
			doPhotoDump(data);
		},
		error : function(data) {
			Ti.API.error("ERROR:create photo " + JSON.stringify(JSON.parse(data.text)));
		}
	});
};