Category rendering, DB columns refined.

misc/kb/client.py

@@ -1,20 +1,58 @@
+from typing import Optional
+
 from aiogram.types import InlineKeyboardButton, InlineKeyboardMarkup
 from aiogram.utils.keyboard import InlineKeyboardBuilder
 
+from dto.categories import CategoryDTO
 
-async def cart_btn(user_id: int) -> InlineKeyboardButton:
+
+def cart_btn(user_id: int) -> InlineKeyboardButton:
     return InlineKeyboardButton(
         text="🛒 Корзина ()", callback_data="cart"
     )  # TODO: Database integration, get cart items count
 
 
+def get_back_btn(
+    data: str = "menu:main", text: Optional[str] = "⬅️ Назад"
+) -> InlineKeyboardButton:
+    return InlineKeyboardButton(text=text, callback_data=data)
+
+
 async def main_menu_kb(user_id: int) -> InlineKeyboardMarkup:
     return InlineKeyboardBuilder(
         [
             [
-                InlineKeyboardButton(text="📦 Каталог", callback_data="catalogue"),
+                InlineKeyboardButton(text="📦 Каталог", callback_data="cat:root"),
                 InlineKeyboardButton(text="🔍", callback_data="find"),
             ],
-            [await cart_btn(user_id)],
+            [cart_btn(user_id)],
         ]
     ).as_markup()
+
+
+async def render_category(
+    children: list[CategoryDTO],
+    parent_id: Optional[int] = None,
+    show_menu: bool = False,
+) -> InlineKeyboardMarkup:
+    btns = [
+        InlineKeyboardButton(
+            text=category.name,
+            callback_data=f"cat:{category.id}",
+        )
+        for category in children
+    ]
+
+    nav = []
+
+    if parent_id is not None:
+        nav.append(
+            InlineKeyboardButton(text="⬅️ Назад", callback_data=f"cat:{parent_id}")
+        )
+
+    if show_menu:
+        nav.append(InlineKeyboardButton(text="⬅️ Назад", callback_data="menu:main"))
+
+    return InlineKeyboardBuilder(
+        [btns[i : i + 2] for i in range(0, len(children), 2)] + [nav],
+    ).as_markup()