Define OAuth2Token using a frozen dataclass.

* gn_auth/auth/authentication/oauth2/endpoints/introspection.py
(IntrospectionEndpoint.introspect_token): Replace token.get_scope()
with token.scope.
* gn_auth/auth/authentication/oauth2/models/oauth2token.py: Import
dataclass, TokenMixin and cached_property.  Delete NamedTuple import.
(OAuth2Token): Use a frozen dataclass and explicitly inherit from
TokenMixin.
(OAuth2Token.expires_at): Make this a cached_property.
(OAuth2Token.check_client): Add the "# pylint ..." in it's own line.

Tested-by: Munyoki Kilyungi <me@bonfacemunyoki.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/gn_auth/auth/authentication/oauth2/endpoints/introspection.py b/gn_auth/auth/authentication/oauth2/endpoints/introspection.py
index 222ddcb..572324e 100644
--- a/gn_auth/auth/authentication/oauth2/endpoints/introspection.py
+++ b/gn_auth/auth/authentication/oauth2/endpoints/introspection.py
@@ -24,12 +24,13 @@ class IntrospectionEndpoint(_IntrospectionEndpoint):
         """Query the token."""
         return _query_token(self, token_string, token_type_hint)
 
-    def introspect_token(self, token: OAuth2Token) -> dict:# pylint: disable=[no-self-use]
+    # pylint: disable=[no-self-use]
+    def introspect_token(self, token: OAuth2Token) -> dict:
         """Return the introspection information."""
         url = urlparse(flask_request.url)
         return {
             "active": True,
-            "scope": token.get_scope(),
+            "scope": token.scope,
             "client_id": token.client.client_id,
             "username": token.user.name,
             "token_type": token.token_type,