backend

Coffee Shop Backend

Getting Started

Installing Dependencies

Python 3.7

Follow instructions to install the latest version of python for your platform in the python docs

Virtual Environment

We recommend working within a virtual environment whenever using Python for projects. This keeps your dependencies for each project separate and organized. Instructions for setting up a virtual environment for your platform can be found in the python docs

PIP Dependencies

Once you have your virtual environment setup and running, install dependencies by naviging to the /backend directory and running:

pip install -r requirements.txt

This will install all of the required packages we selected within the requirements.txt file.

Key Dependencies

• Flask is a lightweight backend microservices framework. Flask is required to handle requests and responses.

• SQLAlchemy and Flask-SQLAlchemy are libraries to handle the lightweight sqlite database. Since we want you to focus on auth, we handle the heavy lift for you in ./src/database/models.py. We recommend skimming this code first so you know how to interface with the Drink model.

• jose JavaScript Object Signing and Encryption for JWTs. Useful for encoding, decoding, and verifying JWTS.

Running the server

From within the ./src directory first ensure you are working using your created virtual environment.

Each time you open a new terminal session, run:

export FLASK_APP=api.py;

To run the server, execute:

flask run --reload

The --reload flag will detect file changes and restart the server automatically.

Tasks

Setup Auth0

1. Create a new Auth0 Account
2. Select a unique tenant domain
3. Create a new, single page web application
4. Create a new API
   • in API Settings:
     • Enable RBAC
     • Enable Add Permissions in the Access Token
5. Create new API permissions:
   • get:drinks
   • get:drinks-detail
   • post:drinks
   • patch:drinks
   • delete:drinks
6. Create new roles for:
   • Barista
     • can get:drinks-detail
     • can get:drinks
   • Manager
     • can perform all actions
7. Test your endpoints with Postman.
   • Register 2 users - assign the Barista role to one and Manager role to the other.
   • Sign into each account and make note of the JWT.
   • Import the postman collection ./starter_code/backend/udacity-fsnd-udaspicelatte.postman_collection.json
   • Right-clicking the collection folder for barista and manager, navigate to the authorization tab, and including the JWT in the token field (you should have noted these JWTs).
   • Run the collection and correct any errors.
   • Export the collection overwriting the one we've included so that we have your proper JWTs during review!

Implement The Server

There are @TODO comments throughout the ./backend/src. We recommend tackling the files in order and from top to bottom:

1. ./src/auth/auth.py
2. ./src/api.py