tryd to fix a oid connect related bug, but there is still a BIG problem

backend/auth/oidc.py

@@ -15,7 +15,6 @@ from backend.models.user_model import User
 from . import auth_bp
 from .oidc_config import PROVIDER_NAME, OIDC_PROVIDERS
 
-
 OIDCAuthentication.oidc_auth_orig = OIDCAuthentication.oidc_auth
 OIDCAuthentication.oidc_logout_orig = OIDCAuthentication.oidc_logout
 
@@ -46,6 +45,7 @@ def create_or_retrieve_user_from_userinfo(userinfo):
 
     if user is not None:
         app.logger.info("user found")
+        app.logger.debug(f"user found: {email}")
         user.last_seen = datetime.utcnow()
         # TODO: update user!
         db.session.commit()
@@ -54,21 +54,24 @@ def create_or_retrieve_user_from_userinfo(userinfo):
     user = User(email=email, first_name=userinfo.get("given_name", ""),
                 last_name=userinfo.get("family_name", ""))
 
-    app.logger.info("creating new user")
+    app.logger.info(f"creating new user: {email}")
 
     db.session.add(user)
     db.session.commit()
     return user
 
 
-
 @auth_bp.route('/oidc', methods=['GET'])
 @oidc_auth.oidc_auth()
 def oidc():
     user_session = UserSession(flask.session)
     app.logger.info(user_session.userinfo)
     user = create_or_retrieve_user_from_userinfo(user_session.userinfo)
+    if user is None:
+        return ''
     login_user(user)
+    app.logger.info(f"logged in user: {str(user)}")
+    app.logger.debug(f"id token: {str(user_session.id_token)}")
     return jsonify(id_token=user_session.id_token,
                    access_token=flask.session['access_token'],
                    userinfo=user_session.userinfo)
@@ -78,3 +81,9 @@ def oidc():
 def oidc_logout():
     oidc_auth.oidc_logout()
     return redirect('/')
+
+
+@oidc_auth.error_view
+def error(error=None, error_description=None):
+    app.logger.error(f"Something wwent wrong with OIDC auth – error: {error}, message: {error_description}")
+    return jsonify({'error': error, 'message': error_description})