main.py

"""Entry point of the bot application."""

import asyncio
import logging

from aiogram import Bot, Dispatcher
from aiogram.client.default import DefaultBotProperties
from aiogram.enums import ParseMode
from aiogram.fsm.storage.memory import MemoryStorage
from aiogram.utils.i18n import I18n
from aiogram.utils.token import TokenValidationError

from bot import handlers, middlewares
from configs import bot_config
from database.engine import init_db

logging.basicConfig(
    level=logging.INFO,
    format="%(asctime)s - %(levelname)s:%(name)s - %(message)s",
)
logger = logging.getLogger(__name__)


async def create_bot() -> Bot:
    """Create and return a Bot instance."""
    try:
        bot = Bot(
            token=bot_config.token or "",
            default=DefaultBotProperties(parse_mode=ParseMode.HTML),
        )
        logger.info("Successfully created bot instance.")

    except TokenValidationError:
        logger.exception("Invalid token provided: %s", bot_config.token)
        raise

    return bot


async def main() -> None:
    """Start the bot application."""
    bot = await create_bot()

    storage = MemoryStorage()
    dp = Dispatcher(storage=storage)
    i18n = I18n(path="locales", domain="messages")
    logger.info("Successfully created dispatcher, i18n and storage instance.")

    middlewares.setup(dp, i18n)
    logger.info("Successfully set up middleware.")

    handlers.setup(dp)
    logger.info("Successfully set up handlers.")

    await init_db()
    await dp.start_polling(bot)


if __name__ == "__main__":
    logger.info("Starting application...")
    asyncio.run(main())