Define Resource/ResourceCategory using frozen dataclass.

* gn_auth/auth/authorisation/resources/base.py: Import dataclass and
asdict.  Remove NamedTuple and dictify.
(ResourceCategory): Use frozen dataclass.
(ResourceCategory.dictify): Delete.
(Resource): Use frozen dataclass.
(Resource.dictify): Delete.
* gn_auth/auth/authorisation/resources/models.py: Delete dictify
import.
(assign_resource_user): Replace dictify with asdict.
(unassign_resource_user): Ditto.
* gn_auth/auth/authorisation/resources/views.py: Import asdict.
Remove dictify import.
(list_resource_categories): Replace dictify with asdict.
(create_resource): Ditto.
(view_resource): Ditto.
(__safe_get_requests_page__): Ditto.
* gn_auth/auth/authorisation/users/views.py:
(user_resources): Replace dictify with asdict.

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

4 files changed, 19 insertions, 31 deletions

diff --git a/gn_auth/auth/authorisation/resources/base.py b/gn_auth/auth/authorisation/resources/base.py
index d2075c2..02b738f 100644
--- a/gn_auth/auth/authorisation/resources/base.py
+++ b/gn_auth/auth/authorisation/resources/base.py
@@ -1,37 +1,22 @@
 """Base types for resources."""
 from uuid import UUID
-from typing import Any, Sequence, NamedTuple
+from dataclasses import dataclass, asdict
+from typing import Any, Sequence
 
-from gn_auth.auth.dictify import dictify
 
-class ResourceCategory(NamedTuple):
+@dataclass(frozen=True)
+class ResourceCategory:
     """Class representing a resource category."""
     resource_category_id: UUID
     resource_category_key: str
     resource_category_description: str
 
-    def dictify(self) -> dict[str, Any]:
-        """Return a dict representation of `ResourceCategory` objects."""
-        return {
-            "resource_category_id": self.resource_category_id,
-            "resource_category_key": self.resource_category_key,
-            "resource_category_description": self.resource_category_description
-        }
 
-class Resource(NamedTuple):
+@dataclass(frozen=True)
+class Resource:
     """Class representing a resource."""
     resource_id: UUID
     resource_name: str
     resource_category: ResourceCategory
     public: bool
     resource_data: Sequence[dict[str, Any]] = tuple()
-
-    def dictify(self) -> dict[str, Any]:
-        """Return a dict representation of `Resource` objects."""
-        return {
-            "resource_id": self.resource_id,
-            "resource_name": self.resource_name,
-            "resource_category": dictify(self.resource_category),
-            "public": self.public,
-            "resource_data": self.resource_data
-        }
diff --git a/gn_auth/auth/authorisation/resources/models.py b/gn_auth/auth/authorisation/resources/models.py
index 97e6adf..3720baa 100644
--- a/gn_auth/auth/authorisation/resources/models.py
+++ b/gn_auth/auth/authorisation/resources/models.py
@@ -6,7 +6,6 @@ from sqlite3 import Row
 from typing import Dict, Sequence, Optional
 
 from gn_auth.auth.db import sqlite3 as db
-from gn_auth.auth.dictify import dictify
 from gn_auth.auth.authentication.users import User
 from gn_auth.auth.db.sqlite3 import with_db_connection
 
@@ -341,7 +340,7 @@ def assign_resource_user(
             (str(user.user_id), str(role.role.role_id),
              str(resource.resource_id)))
         return {
-            "resource": dictify(resource),
+            "resource": asdict(resource),
             "user": asdict(user),
             "role": asdict(role),
             "description": (
@@ -365,7 +364,7 @@ def unassign_resource_user(
              str(role.role.role_id),
              str(resource.resource_id)))
         return {
-            "resource": dictify(resource),
+            "resource": asdict(resource),
             "user": asdict(user),
             "role": asdict(role),
             "description": (
diff --git a/gn_auth/auth/authorisation/resources/views.py b/gn_auth/auth/authorisation/resources/views.py
index 43ee08b..13d9bdf 100644
--- a/gn_auth/auth/authorisation/resources/views.py
+++ b/gn_auth/auth/authorisation/resources/views.py
@@ -2,6 +2,8 @@
 import uuid
 import json
 import sqlite3
+
+from dataclasses import asdict
 from functools import reduce
 
 from authlib.integrations.flask_oauth2.errors import _HTTPException
@@ -13,7 +15,6 @@ from gn_auth.auth.db.sqlite3 import with_db_connection
 from gn_auth.auth.authorisation.roles import Role
 from gn_auth.auth.authorisation.errors import InvalidData, InconsistencyError, AuthorisationError
 
-from gn_auth.auth.dictify import dictify
 from gn_auth.auth.authentication.oauth2.resource_server import require_oauth
 from gn_auth.auth.authentication.users import User, user_by_id, user_by_email
 
@@ -34,7 +35,7 @@ def list_resource_categories() -> Response:
     db_uri = app.config["AUTH_DB"]
     with db.connection(db_uri) as conn:
         return jsonify(tuple(
-            dictify(category) for category in resource_categories(conn)))
+            asdict(category) for category in resource_categories(conn)))
 
 @resources.route("/create", methods=["POST"])
 @require_oauth("profile group resource")
@@ -53,7 +54,7 @@ def create_resource() -> Response:
                     resource_category_by_id(conn, resource_category_id),
                     the_token.user,
                     (form.get("public") == "on"))
-                return jsonify(dictify(resource))
+                return jsonify(asdict(resource))
             except sqlite3.IntegrityError as sql3ie:
                 if sql3ie.args[0] == ("UNIQUE constraint failed: "
                                       "resources.resource_name"):
@@ -70,8 +71,11 @@ def view_resource(resource_id: uuid.UUID) -> Response:
     with require_oauth.acquire("profile group resource") as the_token:
         db_uri = app.config["AUTH_DB"]
         with db.connection(db_uri) as conn:
-            return jsonify(dictify(resource_by_id(
-                conn, the_token.user, resource_id)))
+            return jsonify(
+                asdict(
+                    resource_by_id(conn, the_token.user, resource_id)
+                )
+            )
 
 def __safe_get_requests_page__(key: str = "page") -> int:
     """Get the results page if it exists or default to the first page."""
@@ -325,7 +329,7 @@ def toggle_public(resource_id: uuid.UUID) -> Response:
 
         resource = with_db_connection(__toggle__)
         return jsonify({
-            "resource": dictify(resource),
+            "resource": asdict(resource),
             "description": (
                 "Made resource public" if resource.public
                 else "Made resource private")})
diff --git a/gn_auth/auth/authorisation/users/views.py b/gn_auth/auth/authorisation/users/views.py
index f9353eb..7a32292 100644
--- a/gn_auth/auth/authorisation/users/views.py
+++ b/gn_auth/auth/authorisation/users/views.py
@@ -144,7 +144,7 @@ def user_resources() -> Response:
         db_uri = current_app.config["AUTH_DB"]
         with db.connection(db_uri) as conn:
             return jsonify([
-                dictify(resource) for resource in
+                asdict(resource) for resource in
                 _user_resources(conn, the_token.user)])
 
 @users.route("group/join-request", methods=["GET"])