This is a sample blogging app using Angular and Google cloud firestore. Source code is available on GitHub. Authorization is disabled here intentionally, to allow all the users to experience the full feature. To understand how role-based authorization is implemented, get the source code from GitHub. Login with Google to add/edit/delete a sample blog. Follow common courtesy. Do no delete any exisiting blog. For any feedback/suggestion contact me via Twitter. 
Ankit Sharma