title: Authentication using Firebase for Flask Application running in appengine
body: <p>Hi I have our website running on appengine with flask as backend framework and we have built our authentication and session management using libraries Flask-OAuth, Flask-Login.</p>
  
  <p>But now I have a requirement to use firebase for authentication. 
  I am able create sample applications following firebase tutorials but I do no how to integrate with existing application.</p>
  
  <p>In Firenotes samples provided by firebase team they are using two separate services frontend and backend.</p>
  
  <p>I thought of using firebase code in login.html page and once client authenticated pass the info to /profile url -> log the user_id in database and login-user using Flask-Login. </p>
  
  <p>I am not sure whether the above flow is correct and I am not to ensure that it is correct one without any problems in future.</p>
  
  <p>Please help with any ideas as I need to implement it very soon!!</p>