@dp.callback_query_handler(text='menu')
async def process_menu_callback(callback_query: types.CallbackQuery):
    # Удаляем кнопки
    await bot.answer_callback_query(callback_query.id)
    await bot.delete_message(callback_query.message.chat.id, callback_query.message.message_id)

    # Получаем список товаров из базы данных
    conn = sqlite3.connect('menu.db')
    cursor = conn.cursor()

    # Вычисляем значения offset и limit на основе номера страницы и размера страницы
    page_size = 3
    page_number = 0
    if 'page_number' in callback_query.data:
        page_number = int(callback_query.data.split('_')[2])
    elif 'prev' in callback_query.data:
        page_number = int(callback_query.data.split('_')[2]) - 1
    elif 'next' in callback_query.data:
        page_number = int(callback_query.data.split('_')[2]) + 1
    offset = page_size * page_number
    limit = page_size

    cursor.execute(f'SELECT * FROM menu LIMIT {limit} OFFSET {offset}')
    item = cursor.fetchone()
    conn.close()

    # Создаем сообщение с товаром и кнопками
    message_text = f'<b>{item[1]}</b>\n{item[2]}\n{item[3]} руб.\n\n'
    keyboard_markup = InlineKeyboardMarkup()
    add_to_cart_button = InlineKeyboardButton('В корзину', callback_data=f'add_to_cart_{item[0]}')
    prev_button = InlineKeyboardButton('<< Назад', callback_data=f'menu_prev_{page_number}')
    next_button = InlineKeyboardButton('Вперед >>', callback_data=f'menu_next_{page_number}')
    keyboard_markup.row(prev_button, add_to_cart_button, next_button)
    await bot.send_photo(callback_query.message.chat.id, photo=InputFile(item[4]), caption=message_text,
                         reply_markup=keyboard_markup)

    # Создаем кнопки "назад" и "вперед"
    keyboard_markup = InlineKeyboardMarkup()
    if page_number > 0:
        prev_button = InlineKeyboardButton('<< Назад', callback_data=f'menu_prev_{page_number}')
        keyboard_markup.add(prev_button)
    if cursor.fetchone() is not None:
        next_button = InlineKeyboardButton('Вперед >>', callback_data=f'menu_next_{page_number}')
        keyboard_markup.add(next_button)

    await bot.send_message(callback_query.message.chat.id, 'Выберите товар', reply_markup=keyboard_markup)