TelegramBotTemplate/app/handlers/hmain.py

import aiogram

from aiogram import Bot
from aiogram.fsm.context import FSMContext
from aiogram.filters import Command

from data.keyboards.inline import ibmain
from data import factory, states
from loader import custom_logger


async def mainstart(
    message: aiogram.types.Message,
    state: FSMContext,
    command: Command,
    bot: Bot,
):
    await state.clear()
    custom_logger.debug("Hello!")
    return await message.answer(text="hello!", reply_markup=ibmain.example_callback())


async def example_callback(
    message: aiogram.types.CallbackQuery,
    state: FSMContext,
    bot: Bot,
):
    await state.clear()
    return await message.answer(text="hello callback!")


async def example_callback_factory(
    message: aiogram.types.CallbackQuery,
    state: FSMContext,
    bot: Bot,
    callback_data: factory.ExampleFactory = None,
):
    await state.clear()
    await state.set_state(states.ExampleState.input_user)
    await message.answer()
    return await bot.send_message(
        chat_id=message.message.chat.id,
        text=f'CallbackData: {callback_data.example} | Set state, wait input...'
    )


async def example_state(
    message: aiogram.types.Message,
    state: FSMContext,
    bot: Bot,
):
    await state.clear()
    return await message.answer(
        text=f"hello! Your text: \n\n{message.text}\n\nState Off!"
    )