Configure Firebase is easy-peasy. You only have to signup or author with your Google account into the Firebase console, create a new application and add the needed modules.

We are going to use the Firebase Javascript SDK as we are implementing an AngularJs application.

Create a new project

Once you have entered on the console, you should create a project app by clicking the big **+ **button

Write the project name and select an appropiate location. Within the project you will configure all the needed services provided by Firebase.

Create an app

Just click on the Add another application button and this will show three options in order to continue: iOS, Android and Web.

As we are developing a Javascript based application,  we choose Web. It will show up a popup showing you information about the Javascript code needed to support Firebase in your project.

In our app we put the Javascript include file in the index.html file

<script src="https://www.gstatic.com/firebasejs/3.9.0/firebase.js">

while we put the config object with the API keys in another file located in the www/js folder

var config = {
	apiKey: "",
	authDomain: "",
	databaseURL: "",
	storageBucket: "",
	messagingSenderId: "",
};
firebase.initializeApp(config);

Adding the authentication provider with Firebase

We start adding the Authentication provider to our Firebase project.

Once we clicked on the to start the authentication configuration we can add the Google author provider. We can click the edit option in the Google row and in the popup just click the switch to enable it.

As Firebase is integrated with the big G this step will create automatically the Google API keys to integrate the author process. Once you finished this step you can check it on the Google APIs console. If you want to add more author provider you will need to get manually the API keys for each service.

Adding the realtime Firebase JSON database to our project

Click on Start to add the realtime database support. It will show a box  with only a key as the root of our database with a null value.

But the interesting part in this module is the Rule section where we will define the security rules to access the data. The users only could write into the database their own information and no public information we will be accessed by another user.

// These rules grant access to a node matching the authenticated
// user's ID from the auth token
{
	"rules": {
		"users": {
			"$uid": {
				".read": "$uid === auth.uid",
				".write": "$uid === auth.uid"
			}
		}
	}
}