catalogue operations, db migr and so on.

pre release version.

dto/catalogue.py

@@ -2,6 +2,8 @@ from dataclasses import dataclass
 from enum import Enum
 from typing import Optional, Union
 
+from aiogram.types import Message
+
 from db.models import Category
 from db.models.products import Product
 
@@ -22,3 +24,17 @@ class CatalogueView:
     parent_id: Union[int, str, None] = None
     has_next: bool = False
     show_menu: bool = False
+
+
+@dataclass
+class NewCatalogueElement:
+    msg: Message
+    parent_id: Union[int, str]
+
+
+@dataclass
+class NewCategoryContext(NewCatalogueElement): ...
+
+
+@dataclass
+class NewProductContext(NewCatalogueElement): ...