Use dataclass for django settings

docs/pages/integrations/django.md

@@ -6,16 +6,19 @@ Dependency injection for Django is available via the first-party integration wir
 To install the integration, add `wireup.integration.django` to `INSTALLED_APPS` and define a new `WIREUP` setting.
 
 ```python title="settings.py"
+from wireup.integration.django import WireupSettings
+
+
 INSTALLED_APPS = [
     ...,
     "wireup.integration.django"
 ]
 
-WIREUP = {
+WIREUP = WireupSettings(
     # This is a list of top-level modules containing service registrations.
     # It can be either a list of strings or module types.
-    "SERVICE_MODULES": ["mysite.polls.services"]
-},
+    service_modules=["mysite.polls.services"]
+)
 ```
 
 

test/integration/django/test_django_integration.py

@@ -6,11 +6,14 @@
 import django
 from django.test import Client
 from django.urls import path
+from wireup.integration.django import WireupSettings
 
 INSTALLED_APPS = ["wireup.integration.django"]
 DEBUG = True
 ROOT_URLCONF = sys.modules[__name__]
-WIREUP = {"SERVICE_MODULES": ["test.integration.django.service", "test.integration.django.factory"]}
+WIREUP = WireupSettings(
+    service_modules=["test.integration.django.service", "test.integration.django.factory"]
+)
 SECRET_KEY = "not_actually_a_secret"  # noqa: S105
 START_NUM = 4
 

wireup/integration/django/__init__.py

@@ -0,0 +1,15 @@
+from __future__ import annotations
+
+from dataclasses import dataclass
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from types import ModuleType
+
+
+@dataclass(frozen=True)
+class WireupSettings:
+    """Class containing Wireup settings specific to Django."""
+
+    service_modules: list[str | ModuleType]
+    """List of modules containing wireup service registrations."""

wireup/integration/django/apps.py

@@ -1,23 +1,30 @@
 from __future__ import annotations
 
 import importlib
+from typing import TYPE_CHECKING
 
 from django.apps import AppConfig
 from django.conf import settings
 
 from wireup import container, warmup_container
 
+if TYPE_CHECKING:
+    from wireup.integration.django import WireupSettings
+
 
 class WireupConfig(AppConfig):
     """Integrate wireup with Django."""
 
     name = "wireup.integration.django"
 
     def ready(self) -> None:  # noqa: D102
-        service_modules = settings.WIREUP.get("SERVICE_MODULES", [])
+        integration_settings: WireupSettings = settings.WIREUP
 
         for entry in dir(settings):
             if not entry.startswith("__") and hasattr(settings, entry):
                 container.params.put(entry, getattr(settings, entry))
 
-        warmup_container(container, [importlib.import_module(m) if isinstance(m, str) else m for m in service_modules])
+        warmup_container(
+            container,
+            [importlib.import_module(m) if isinstance(m, str) else m for m in integration_settings.service_modules],
+        )