refactor: code improvements

solution/services/backend/api/v1/clients/schemas.py

@@ -3,12 +3,12 @@ from uuid import UUID
 
 from ninja import ModelSchema
 
-from apps.client.models import Client
+from apps.client.models import Client as ClientModel
 
 
 class Client(ModelSchema):
     client_id: UUID
 
     class Meta:
-        model = Client
+        model = ClientModel
-        exclude: typing.ClassVar[tuple[str]] = (Client.id.field.name,)
+        exclude: typing.ClassVar[tuple[str]] = (ClientModel.id.field.name,)

solution/services/backend/api/v1/stats/views.py

@@ -39,7 +39,7 @@ def get_campaign_statistics(
 )
 def get_daily_campaign_statistics(
     request: HttpRequest, campaign_id: UUID
-) -> tuple[status, dict[str, Any]]:
+) -> tuple[status, list[dict[str, Any]]]:
     campaign = get_object_or_404(Campaign, id=campaign_id)
 
     return status.OK, campaign.get_daily_statistics()