Implement OAuth with GCP

This learning is more around adding OAuth for streamlit App. This video and code shared was a good reference to customize.

Creating a custom GCP project, providing OAuth Consent, Adding user info, onboarding is the process.

Step 1 - Fill Consent Screen and Add Test Users

Step 2 - Create Credentials

Sample code

	#httpx_oauth==0.5.0
	#mysql-connector-python==8.0.28
	#pandas==1.3.4
	#python-dotenv==0.20.0
	#streamlit==1.8.0
	import streamlit as st
	# IMPORTING LIBRARIES
	import os
	from numpy import void
	import streamlit as st
	import asyncio
	from httpx_oauth.clients.google import GoogleOAuth2
	#from dotenv import load_dotenv
	#load_dotenv('.env')
	CLIENT_ID = "AAAAAAA"
	CLIENT_SECRET = "BBBBBBBB"
	REDIRECT_URI = "http://localhost:8501"
	async def get_authorization_url(client: GoogleOAuth2, redirect_uri: str):
	authorization_url = await client.get_authorization_url(redirect_uri, scope=["profile", "email"])
	return authorization_url
	async def get_access_token(client: GoogleOAuth2, redirect_uri: str, code: str):
	token = await client.get_access_token(code, redirect_uri)
	return token
	async def get_email(client: GoogleOAuth2, token: str):
	user_id, user_email = await client.get_id_email(token)
	return user_id, user_email
	def get_login_str():
	client: GoogleOAuth2 = GoogleOAuth2(CLIENT_ID, CLIENT_SECRET)
	authorization_url = asyncio.run(
	get_authorization_url(client, REDIRECT_URI))
	return f'<a target="_self" href ="{authorization_url}" >Google login</a>'
	def display_user() -> void:
	client: GoogleOAuth2 = GoogleOAuth2(CLIENT_ID, CLIENT_SECRET)
	# get the code from the url
	code = st.experimental_get_query_params()['code']
	token = asyncio.run(get_access_token(
	client, REDIRECT_URI, code))
	user_id, user_email = asyncio.run(
	get_email(client, token['access_token']))
	st.write(
	f"You're logged in as {user_email} and id is {user_id}")
	if __name__ == '__main__':
	st.title("Streamlit Oauth Login")
	st.write(get_login_str(), unsafe_allow_html=True)
	if st.button("display user"):
	display_user()

view raw demooauth.py hosted with ❤ by GitHub

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