#Social Authentication Bootstrap

A boilerplate project that provides out-of-the-box support for token based basic authentication (Email/Password) and open authentication (OAuth 2.0) with various providers, using industry's best practices and modules.

The project is divided into three parts:

1. A back-end built using Spark micro-framework.
2. A single page web application built using Backbone.JS.
3. An Android application targeting Android Lollipop.

Basically, the back-end exposes a REST API using which both the front-end applications communicate with the server.

##Table of Contents

• Features
• Screenshots
• Getting Started
• Using Your Own API Keys

##Features

• Basic Authentication using Email and Password
• OAuth 2.0 Authentication via Google, Facebook, Github and LinkedIn
• Bootstrap 3 UI on the single page app + Material Design on the Android app
• Account Management:
  • View and update account details
  • Gravatar
  • Change password
  • Link multiple OAuth strategies to a single account (only if email is common to all strategies)
  • Delete account

##Screenshots [frontend_web] Login page:

[frontend_web] My Account page:

[frontend_android] Login view and User Profile view:

##Getting Started Tools you need to get started:

• MongoDB
• Gradle
• Android SDK

Note: Make sure you add the relevant paths of the above tools to your PATH variable.

Once you have installed the above tools, you need to clone the repository and execute the following commands from the backend directory:

$ mongod
$ gradle run 

The command mongod starts up the MongoDB server, while gradle run executes the run task, which in turn compiles all the back-end source, along with all the dependencies, and runs the main Java class: com.enthusiast94.social_auth_bootstrap.Main, starting up the application server.

Note: By default, the application server will run on port 3005. You can change this in com.enthusiast94.social_auth_bootstrap.Main.

Now that our back-end is ready, we'll move onto our front-end single page application. Execute the following commands from the frontend_web directory in order to install all the client-side JavaScript dependencies (listed in frontend_web/package.json), and start the application.

$ npm install
$ npm start

Note: By default, the single page application will run on port 4000. You can change this by modifying the start script included in frontend_web/package.json.

And Finally, we'll move on to the Android application. First, you will have to import the Android project included in frontend_android into Android Studio or IntelliJ IDEA (with Android plugin). Once it has been imported, you can use the Gradle Tool Window to build and run the project. See here if you would like to run the project via the command line.

##Using Your Own API Keys When you run the project as it is (without making any changes to backend/config.json, you'll notice that whenever you try to authenticate via an external provider, it asks you to authorize an app named social-auth-starter. This is because I have created an app with this name for all the supported providers separately, and then added their client IDs and secrets to backend/config.json. This is where all OAuth client credentials are stored.

Apart from the client ID and secret, you also have to provide the following information:

• server_redirect_uri_base: This is the base HTTP URL of your back-end server to which the OAuth providers will redirect to passing the user's access token/authorization code (depends on the provider). The path will always be /oauth2-callback, whereas the protocol and domain name will depend on how you host the server. The complete redirect URL is constructed by appending the server_redirect_uri_path to this.
• client_redirect_uri: This is the HTTP URL of your front-end application server to which your back-end server will redirect to passing the user's access token and ID.
• default_user_password: This is the default password which will be used when creating new users using an OAuth2 strategy.
• server_redirect_uri_path: This path needs to be provided for each of the different providers. It will be appended to server_redirect_uri_base in order to construct the full redirect URL for the server.