from aiogram import Router, types, filters
from aiogram.utils.keyboard import InlineKeyboardBuilder
from contextlib import suppress
from aiogram.exceptions import TelegramBadRequest

echo_router = Router()

class NumbersCallbackFactory(filters.callback_data.CallbackData, prefix="fabnum"):
    action: str
    value: int | None

def get_keyboard_fab():
    builder = InlineKeyboardBuilder()
    builder.button(
        text="-2", callback_data=NumbersCallbackFactory(action="change", value=-2)
    )
    builder.button(
        text="-1", callback_data=NumbersCallbackFactory(action="change", value=-1)
    )
    builder.button(
        text="+1", callback_data=NumbersCallbackFactory(action="change", value=1)
    )
    builder.button(
        text="+2", callback_data=NumbersCallbackFactory(action="change", value=2)
    )
    builder.button(
        text="Подтвердить", callback_data=NumbersCallbackFactory(action="finish")
    )
    builder.adjust(4)
    # -2 -1 +1 +2
    # Подтвердить
    return builder.as_markup()

@echo_router.callback_query(NumbersCallbackFactory.filter())
async def update_num_text(callback: types.CallbackQuery,
                          callback_data: NumbersCallbackFactory):
    new_value = int(callback.message.text)

    if callback_data.action == 'change':
        new_value += callback_data.value

        with suppress(TelegramBadRequest):
            await callback.message.edit_text(
                f"{new_value}",
                reply_markup=get_keyboard_fab()
            )
    elif callback_data.action == 'finish':
        await callback.answer('Подтверждено')

@echo_router.message(filters.Command(commands=['numbers']))
async def echo(message: types.Message):
    await message.answer('0', reply_markup=get_keyboard_fab())