types-oauthlib

import os from typing import Dict, Any from oauthlib.oauth2 import WebApplicationClient # --- Configuration (replace with your actual values) --- CLIENT_ID: str = os.environ.get('OAUTH_CLIENT_ID', 'your_client_id') AUTHORIZATION_BASE_URL: str = os.environ.get('OAUTH_AUTH_URL', 'https://example.com/oauth/authorize') REDIRECT_URI: str = os.environ.get('OAUTH_REDIRECT_URI', 'https://example.com/callback') # 1. Create a client instance client: WebApplicationClient = WebApplicationClient(CLIENT_ID) # 2. Prepare the authorization request URL scope: str = "read write profile" request_uri: str = client.prepare_request_uri( AUTHORIZATION_BASE_URL, redirect_uri=REDIRECT_URI, scope=scope ) print(f"Visit this URL to authorize: {request_uri}") # Simulate receiving an authorization response from the OAuth provider # In a real web application, this URL would be received by your REDIRECT_URI endpoint simulated_auth_response_url: str = f"{REDIRECT_URI}?code=AUTHORIZATION_CODE_EXAMPLE&state=STATE_EXAMPLE" # 3. Parse the authorization response for the code # The state parameter is crucial for CSRF protection and should be validated against a stored value. response_params: Dict[str, Any] = client.parse_request_uri( uri=simulated_auth_response_url, state='STATE_EXAMPLE' # This should match the state generated in prepare_request_uri and stored in session/database ) auth_code: str = response_params['code'] print(f"Successfully received authorization code: {auth_code}") # Further steps would involve exchanging the code for an access token # using client.prepare_token_request and sending it to the token endpoint.