create flask_app.py

flask_app.py

@@ -0,0 +1,68 @@
+from flask import Flask, redirect, request, session, jsonify
+from google_auth_oauthlib.flow import Flow
+from google.oauth2 import id_token
+from google.auth.transport import requests
+import os
+
+app = Flask(__name__)
+app.secret_key = 'YOUR_FLASK_SECRET_KEY'
+
+# Google OAuth Configuration
+CLIENT_ID = '931024815427-72meiq3uivuuolfukb3jvikvhhqlr574.apps.googleusercontent.com'
+CLIENT_SECRET = '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'
+REDIRECT_URI = 'http://localhost:5001/oauth2callback'
+SCOPES = ['openid', 'https://www.googleapis.com/auth/userinfo.email', 'https://www.googleapis.com/auth/userinfo.profile']
+
+@app.route('/login')
+def login():
+    flow = Flow.from_client_config(
+        client_config={
+            "web": {
+                "client_id": CLIENT_ID,
+                "client_secret": CLIENT_SECRET,
+                "auth_uri": "https://accounts.google.com/o/oauth2/auth",
+                "token_uri": "https://oauth2.googleapis.com/token"
+            }
+        },
+        scopes=SCOPES,
+        redirect_uri=REDIRECT_URI
+    )
+    authorization_url, state = flow.authorization_url(access_type='offline', include_granted_scopes='true')
+    session['state'] = state
+    return redirect(authorization_url)
+
+@app.route('/oauth2callback')
+def oauth2callback():
+    state = session['state']
+    flow = Flow.from_client_config(
+        client_config={
+            "web": {
+                "client_id": CLIENT_ID,
+                "client_secret": CLIENT_SECRET,
+                "auth_uri": "https://accounts.google.com/o/oauth2/auth",
+                "token_uri": "https://oauth2.googleapis.com/token"
+            }
+        },
+        scopes=SCOPES,
+        state=state,
+        redirect_uri=REDIRECT_URI
+    )
+    flow.fetch_token(authorization_response=request.url)
+    credentials = flow.credentials
+    session['credentials'] = credentials.to_json()
+    
+    idinfo = id_token.verify_oauth2_token(
+        id_token=credentials.id_token,
+        request=requests.Request(),
+        audience=CLIENT_ID
+    )
+    
+    session['user_info'] = {"name": idinfo.get("name")}
+    return redirect("http://localhost:7860")  # Redirect back to the Shiny app
+
+@app.route('/user_info')
+def user_info():
+    return jsonify(session.get('user_info', {}))
+
+if __name__ == '__main__':
+    app.run(port=5001)