Quizlet OAuth example

.QUIZLET_OAUTH.md

export BROWSER=google-chrome

https://quizlet.com/api-dashboard

Need client_id and client_secret from API homepage, stored in tmp/config.yaml

client_id: "#{client_id}"
client_secret: "#{client_secret}"
redirect_uri: "https://www.mozilla.org/en-US/"

justin@justin-XPS-13-9360:~/work$ python3 authorize.py 
Open your browser and navigate to new tab
Paste the full redirect URL here - Opening in existing browser session.
https://www.mozilla.org/en-US/?code=XXXXXX&state=XXXXXX
{'access_token': 'XXXXXX', 'token_type': 'bearer', 'scope': ['XXXXXX']}

- script should fire up your webbrowser, open a new tab and navigate to the URL specified by `redirect_uri`
- note args appended to end of redirect URL

- *copy/paste that URL from the browser into the terminal to complete the flow and get the token*

authorize.py

"""
- https://developer.github.com/apps/building-oauth-apps/authorizing-oauth-apps/
- https://stackoverflow.com/questions/32397338/aws-codepipeline-not-able-to-access-organizations-repositories
"""

import json, re, requests, webbrowser, yaml

from requests_oauthlib import OAuth2Session

AuthURL="https://quizlet.com/authorize"

TokenURL="https://api.quizlet.com/oauth/token"

Scopes=yaml.load("""
- read
- write_set
""", Loader=yaml.FullLoader)

def authorize(config):
    session=OAuth2Session(config["client_id"],
                          scope=Scopes, # NB not comma- joined string
                          redirect_uri=config["redirect_uri"])
    auth, state = session.authorization_url(AuthURL,
                                            access_type="offline",
                                            approval_prompt="force")
    print ("Open your browser and navigate to new tab")
    webbrowser.open(auth)
    response=input("Paste the full redirect URL here - ")
    try:
        code=re.search("(code=)(.+)", response).group(2)
    except:
        raise RuntimeError("Failed to filter code from pasted data")
    return session.fetch_token(TokenURL,
                               client_secret=config["client_secret"],
                               authorization_response=response)

if __name__=="__main__":
    try:
        import os
        if not os.path.exists("tmp/config.yaml"):
            raise RuntimeError("config.yaml does not exist")
        config=yaml.load(open("tmp/config.yaml").read(),
                         Loader=yaml.FullLoader)
        print (authorize(config))        
    except RuntimeError as error:
        print ("Error: %s" % str(error))

requirements.txt

pyyaml
requests
requests_oauthlib