From 0582565fa7db4b95e86fb0dde8d83e3170e566a7 Mon Sep 17 00:00:00 2001
From: Frederick Muriuki Muriithi
Date: Thu, 23 May 2024 10:51:48 -0500
Subject: jwt: add user roles to the jwt token.

---
 .../oauth2/grants/jwt_bearer_grant.py              | 26 +++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/gn_auth/auth/authentication/oauth2/grants/jwt_bearer_grant.py b/gn_auth/auth/authentication/oauth2/grants/jwt_bearer_grant.py
index b0f2cc7..d75f730 100644
--- a/gn_auth/auth/authentication/oauth2/grants/jwt_bearer_grant.py
+++ b/gn_auth/auth/authentication/oauth2/grants/jwt_bearer_grant.py
@@ -3,6 +3,8 @@ import uuid
 
 from flask import current_app as app
 
+from dataclasses import asdict
+
 from authlib.common.security import generate_token
 from authlib.oauth2.rfc7523.jwt_bearer import JWTBearerGrant as _JWTBearerGrant
 from authlib.oauth2.rfc7523.token import (
@@ -10,6 +12,22 @@ from authlib.oauth2.rfc7523.token import (
 
 from gn_auth.auth.db.sqlite3 import with_db_connection
 from gn_auth.auth.authentication.users import user_by_id
+from gn_auth.auth.authorisation.roles.models import user_roles
+
+
+def convert_uuids_to_string(srcdict: dict) -> dict:
+    """
+    Convert *ALL* UUID objects in a dict to strings.
+
+    `json.dumps` does not encode UUID objects by default.
+    """
+    def uuid2str(key, value):
+        if isinstance(value, dict):
+            return (key, convert_uuids_to_string(value))
+        if isinstance(value, uuid.UUID):
+            return (key, str(value))
+        return (key, value)
+    return dict(tuple(uuid2str(_key, _val) for _key, _val in srcdict.items()))
 
 
 class JWTBearerTokenGenerator(_JWTBearerTokenGenerator):
@@ -31,7 +49,13 @@ class JWTBearerTokenGenerator(_JWTBearerTokenGenerator):
                 for key, value in tokendata.items()
             },
             "sub": str(tokendata["sub"]),
-            "jti": str(uuid.uuid4())
+            "jti": str(uuid.uuid4()),
+            "gn:auth:user:roles": tuple(convert_uuids_to_string({
+                **item,
+                "roles": tuple(convert_uuids_to_string(asdict(role))
+                               for role in item["roles"])
+            }) for item in with_db_connection(
+                lambda conn: user_roles(conn, user)))
         }
 
 
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