This project is built on the Hull platform, with Aura, Backbone.js, Ratchet and lots of other cool libraries.

You don't need an account on hull.io to use it locally, the appId is already present in this app.

Implement cool features (see the last paragraph for ideas), contribute to this repo and we'll give you an early access to Hull so you can build and deploy your own apps !

This is a fully contained demo of what you can achieve with hull.

It's somewhat of a clone of Instagram. View demo

Currently, we use Ratchet, so it will work only on Webkit browsers, iOS and Android.

• Login with Twitter
• Upload photos
• Like them
• Comment on them
• List you Twitter friends who also use the app
• Get the public activity feed
• See what your friends have done

Best of all, it has no server code and barely any Javascript. Prepare to be amazed.

The steps below are tailored for Mac environments : Linux should mostly work the same.

Hullagram is built around the following apis of Hull

• Activities
• Resources
• Comments
• Likes
• Friendships

The code is a mix of custom widgets and packaged widgets distributed via hull. Most of the packaged widgets are skinned by overriding default templates

You can find an introduction on how Hull widgets work here.

The document body initially contains only 2 widgets :

• hullagram is a container that displays the login screen if the current user is not connected, and the app widget if he is.
• uploader is used to display overlay notifications during file uploads.

Then when the user is connected via Twitter, the app widget take over the whole page and starts to act as the main controller.

The first screen is the public activity feed of the app.

It is implemented in the pictures widget

The data is fetched from the Activities API

The like buttons & like counts on the images comme from a widget distributed with hull (like_button@hull) and that is just skinned here

The pictures displayed are those liked by the current user.

It is implemented in the likes widget

The data is fetched from the Likes API

Here we display the list of people that the current user follows on Twitter that also have a profile on the app.

We use the packaged widgets friends_list@hull and just override its main template

Just displaying a user profile, the widget is here

Comments use the packaged widget comments@hull, with a local template override.

We use the apis available on iOS6+ to have access to the camera, and a little trickery to give it a nice appearance.

<input type="file" name="file" accept="image/*" capture="camera">

The pictures are then uploaded to a HullStore (wich is an S3 bucket with CORS activated) via the packaged upload@hull widget.

The uploader widget then reacts to events emmited by the upload@hull widget to display upload status info. (by the way, it's a good example of the way widgets are supposed to interact in a widgets based aura / hull app).

Once the widget is uploaded, the user gets a chance to review and describe it before its actual publication.

Confirming the publication then stores the picture as an Image that belongs to the user.

First, clone this repository :

git clone git://github.com/hull/hullagram.git

Install node.js (Only used for building the app, not needed for deployment)

grunt-cli as a global module. It's amazing so you should do it anyways.

[sudo] npm install grunt-cli -g
[sudo] npm install bower -g

then install grunt and it's modules in the project's folder.

cd hullagram/
npm install
bower install

grunt server

Go to your org's dashboard and setup a few services :

Required services :

• A Twitter App to setup auth
• A Hull store to store the uploaded images

Optional anlytics services :

• Mixpanel and / or
• Google Analytics

Then create a new hull app.

Don't forget to whitelist your domains and to setup your appId and orgUrlin the Hull.init method (which is in located in the index.html file).

First create your heroku app if it's not done yet :

heroku create my-own-hullagram

Build your app for deployement, and commit the compiled version:

git checkout -b deploy
grunt build
git add -f dist
git commit -m "Deployment build"

Deploy your app to heroku:

git subtree push --prefix dist [email protected]:my-own-hullagram.git master
open http://my-own-hullagram.herokuapp.com

Here are a few ideas for further improvement :

• Photo Filters With caman.js/vintage.js or https://github.com/kudakurage/CSS-PhotoEditor-for-iOS6 + svg foreignObject + canvas drawImage()

• Tapping once on an image in a feed could open a detail view

• Tapping on the likes count cell in a profile view could show likes

• Doubletapping an image could like/unlike it

• Pull to refresh

• Add error handling to image uploads

• PushState support

• Your idea here… ?