Features: 1) Add retrieve_user flag to serializers for optional user data retrieval; 2) Allow flexibility in handling user data as UUID or serialized object;

Fixes: 1) Adjust `mutate` methods in GraphQL mutations to support `retrieve_user` flag; 2) Ensure proper fallback to UUID handling when `retrieve_user` is set to `False`;

Extra: 1) Refactor serializers and mutations for improved customization and reduced overhead; 2) Add comments and clean up redundant code.

engine/vibes_auth/graphene/mutations.py

@@ -201,11 +201,11 @@ class ObtainJSONWebToken(BaseMutation):
     access_token = String(required=True)
 
     def mutate(self, info, email, password):
-        serializer = TokenObtainPairSerializer(data={"email": email, "password": password})
+        serializer = TokenObtainPairSerializer(data={"email": email, "password": password}, retrieve_user=False)
         try:
             serializer.is_valid(raise_exception=True)
             return ObtainJSONWebToken(
-                user=User.objects.get(uuid=serializer.validated_data["user"]["uuid"]),
+                user=User.objects.get(uuid=serializer.validated_data["user"]),
                 refresh_token=serializer.validated_data["refresh"],
                 access_token=serializer.validated_data["access"],
             )
@@ -222,11 +222,11 @@ class RefreshJSONWebToken(BaseMutation):
     refresh_token = String()
 
     def mutate(self, info, refresh_token):
-        serializer = TokenRefreshSerializer(data={"refresh": refresh_token})
+        serializer = TokenRefreshSerializer(data={"refresh": refresh_token}, retrieve_user=False)
         try:
             serializer.is_valid(raise_exception=True)
             return RefreshJSONWebToken(
-                user=User.objects.get(uuid=serializer.validated_data["user"]["uuid"]),
+                user=User.objects.get(uuid=serializer.validated_data["user"]),
                 access_token=serializer.validated_data["access"],
                 refresh_token=serializer.validated_data["refresh"],
             )
@@ -243,12 +243,12 @@ class VerifyJSONWebToken(BaseMutation):
     detail = String()
 
     def mutate(self, info, token):
-        serializer = TokenVerifySerializer(data={"token": token})
+        serializer = TokenVerifySerializer(data={"token": token}, retrieve_user=False)
         with suppress(Exception):
             serializer.is_valid(raise_exception=True)
             # noinspection PyTypeChecker
             return VerifyJSONWebToken(
-                token_is_valid=True, user=User.objects.get(uuid=serializer.validated_data["user"]["uuid"])
+                token_is_valid=True, user=User.objects.get(uuid=serializer.validated_data["user"])
             )
         detail = traceback.format_exc() if settings.DEBUG else ""
         # noinspection PyTypeChecker

engine/vibes_auth/serializers.py

@@ -137,6 +137,8 @@ class TokenObtainSerializer(Serializer):
         super().__init__(*args, **kwargs)
 
         self.user: User | None = None
+        self.user_uuid: str | None = None
+        self.retrieve_user: bool = kwargs.get("retrieve_user", True)
         self.fields[self.username_field] = CharField(write_only=True)
         self.fields["password"] = PasswordField()
 
@@ -179,7 +181,7 @@ class TokenObtainPairSerializer(TokenObtainSerializer):
         data["refresh"] = str(refresh)
         # noinspection PyUnresolvedReferences
         data["access"] = str(refresh.access_token)  # type: ignore [attr-defined]
-        data["user"] = UserSerializer(self.user).data
+        data["user"] = UserSerializer(self.user).data if self.retrieve_user else self.user.pk
 
         if api_settings.UPDATE_LAST_LOGIN:
             if not self.user:
@@ -195,6 +197,11 @@ class TokenRefreshSerializer(Serializer):
     access = CharField(read_only=True)
     token_class = RefreshToken
 
+    def __init__(self, *args, **kwargs) -> None:
+        super().__init__(*args, **kwargs)
+
+        self.retrieve_user: bool = kwargs.get("retrieve_user", True)
+
     def validate(self, attrs: dict[str, Any]) -> dict[str, str]:
         refresh = self.token_class(attrs["refresh"])
 
@@ -210,9 +217,12 @@ class TokenRefreshSerializer(Serializer):
             refresh.set_iat()
 
             data["refresh"] = str(refresh)
-            user = User.objects.get(uuid=refresh.payload["user_uuid"])
             # noinspection PyTypeChecker
-            data["user"] = UserSerializer(user).data  # type: ignore [assignment]
+            data["user"] = (
+                UserSerializer(User.objects.get(uuid=refresh.payload["user_uuid"])).data
+                if self.retrieve_user
+                else refresh.payload["user_uuid"]
+            )
 
         return data
 
@@ -220,6 +230,11 @@ class TokenRefreshSerializer(Serializer):
 class TokenVerifySerializer(Serializer):
     token = CharField(write_only=True)
 
+    def __init__(self, *args, **kwargs) -> None:
+        super().__init__(*args, **kwargs)
+
+        self.retrieve_user: bool = kwargs.get("retrieve_user", True)
+
     def validate(self, attrs: dict[str, None]) -> dict[Any, Any]:
         token = UntypedToken(attrs["token"])
 
@@ -237,15 +252,16 @@ class TokenVerifySerializer(Serializer):
             raise ValidationError(_("invalid token")) from te
 
         try:
-            user_uuid = payload["user_uuid"]
-            user = User.objects.get(uuid=user_uuid)
+            # noinspection PyTypeChecker
+            attrs["user"] = (
+                UserSerializer(User.objects.get(uuid=payload["user_uuid"])).data
+                if self.retrieve_user
+                else payload["user_uuid"]
+            )
         except KeyError as ke:
             raise ValidationError(_("no user uuid claim present in token")) from ke
         except User.DoesNotExist as dne:
             raise ValidationError(_("user does not exist")) from dne
-
-        # noinspection PyTypeChecker
-        attrs["user"] = UserSerializer(user).data  # type: ignore [assignment]
         return attrs