Рефакторинг. Разношу логику.

main.py

@@ -1,16 +1,16 @@
+"""Главный модуль программы."""
 import logging
 from aiogram import Bot, Dispatcher, executor, types
 from aiogram.utils.exceptions import MessageToDeleteNotFound
 import asyncio
 from datetime import timedelta, datetime
 import secrets
-from sqlalchemy import create_engine
-from sqlalchemy.orm import sessionmaker
+
 from sqlalchemy.exc import IntegrityError
 from models import Allowed_user, Token, Messages_to_delete, Base
 from aiogram.utils.markdown import escape_md
-from services import auth, only_admins
-from . import settings
+import settings
+import services
 
 logging.basicConfig(level=logging.INFO)
 
@@ -18,30 +18,26 @@ logging.basicConfig(level=logging.INFO)
 bot = Bot(token=settings.API_TOKEN)
 dp = Dispatcher(bot)
 
-engine = create_engine("sqlite:///" + str(settings.DB_PATH))
-Session = sessionmaker(bind=engine)
-session = Session()
-
 
 async def clean_up(message_id: int, delay_min: int):
     exp = datetime.now() + timedelta(minutes=delay_min)
     msg: Messages_to_delete = Messages_to_delete(
         message_id=message_id, deletion_date=exp
     )
-    session.add(msg)
-    session.commit()
+    services.session.add(msg)
+    services.session.commit()
 
     await asyncio.sleep(delay_min * 60)
     try:
         await bot.delete_message(chat_id=settings.CHAT_ID, message_id=message_id)
-        session.delete(msg)
-        session.commit()
+        services.session.delete(msg)
+        services.session.commit()
     except MessageToDeleteNotFound:
         print("Ошибка удаления сообщения")
 
 
 @dp.message_handler(commands=["start", "help"])
-@auth
+@services.auth
 async def send_welcome(message: types.Message):
     """Справка по командам."""
     await message.reply(
@@ -51,7 +47,7 @@ async def send_welcome(message: types.Message):
 
 
 @dp.message_handler(commands=["channel_id"])
-@only_admins
+@services.only_admins
 async def get_channel_id(message: types.Message) -> None:
     """Возвращает id канала по его имени."""
 
@@ -69,7 +65,7 @@ async def get_channel_id(message: types.Message) -> None:
 
 
 @dp.message_handler(commands=["mes"])
-@auth
+@services.auth
 async def send_to_chanel(message: types.Message) -> None:
 
     deletion_time = message.date + timedelta(minutes=settings.DELAY_TIME)
@@ -85,7 +81,7 @@ async def send_to_chanel(message: types.Message) -> None:
 
 
 @dp.message_handler(commands=["q"])
-@auth
+@services.auth
 async def send_question(message: types.Message) -> None:
     """Отправить вопрос через бота.
 
@@ -116,7 +112,7 @@ async def send_question(message: types.Message) -> None:
 
 
 @dp.message_handler(commands=["get_invite"])
-@only_admins
+@services.only_admins
 async def get_invite(message: types.Message) -> None:
 
     token = secrets.token_urlsafe(16)
@@ -126,8 +122,8 @@ async def get_invite(message: types.Message) -> None:
 
     exp = datetime.now() + timedelta(minutes=5)
     test = Token(token=token, expire=exp)
-    session.add(test)
-    session.commit()
+    services.session.add(test)
+    services.session.commit()
     msg = f"Новый токен: *{token}*\nБудет действителен 5 минут\n\nЧтобы вступить в чат напиши боту {escape_md(bot_link)} \n`/add_me {token}`"
 
     await message.reply(
@@ -147,7 +143,7 @@ async def add_me(message: types.Message) -> None:
 
     """
     user_token = message.text[8:].strip()
-    tokens_list = session.query(Token).order_by(Token.id).all()
+    tokens_list = services.session.query(Token).order_by(Token.id).all()
 
     finded_token: Token = next((t for t in tokens_list if t.token == user_token), None)
 
@@ -157,12 +153,12 @@ async def add_me(message: types.Message) -> None:
             user_id=message["from"]["id"], date_add=datetime.now()
         )
         try:
-            session.add(new_user)
-            session.delete(finded_token)
-            session.commit()
+            services.session.add(new_user)
+            services.session.delete(finded_token)
+            services.session.commit()
         except IntegrityError:
             print(f"Юзер {new_user.user_id} уже в базе")
-            session.rollback()
+            services.session.rollback()
 
         # генерируем ссылку, истечет через 5 минут, может вступить 1 человек
         link = await bot.create_chat_invite_link(
@@ -184,7 +180,7 @@ async def add_me(message: types.Message) -> None:
 
 
 @dp.message_handler(commands=["stop"])
-@auth
+@services.auth
 async def stop_and_panic(message: types.Message) -> None:
     """Panic-button для бота.
 
@@ -194,13 +190,15 @@ async def stop_and_panic(message: types.Message) -> None:
     """
     u_id = message["from"]["id"]
     finded_user: Allowed_user = (
-        session.query(Allowed_user).filter(Allowed_user.user_id == u_id).one_or_none()
+        services.session.query(Allowed_user)
+        .filter(Allowed_user.user_id == u_id)
+        .one_or_none()
     )
     await bot.kick_chat_member(
         chat_id=settings.CHAT_ID, user_id=finded_user.user_id, revoke_messages=True
     )
-    session.delete(finded_user)
-    session.commit()
+    services.session.delete(finded_user)
+    services.session.commit()
 
     # рассылка сообщения админам что юзер нажал паническую кнопку. Нужны ид чатов.
     # for admin_id in ADMINS:
@@ -208,10 +206,10 @@ async def stop_and_panic(message: types.Message) -> None:
 
 
 @dp.message_handler(commands=["wlc"])
-@only_admins
+@services.only_admins
 async def wlc(message: types.Message) -> None:
     """Тестирование приветственного сообщения."""
-    with open("welcome_msg.txt", "r") as f:
+    with open("static/welcome_msg.txt", "r") as f:
         msg = f.read()
         await message.reply(
             msg, reply=False, parse_mode="Markdown", disable_web_page_preview=True
@@ -220,7 +218,9 @@ async def wlc(message: types.Message) -> None:
 
 # https://stackoverflow.com/questions/67637631/create-a-background-process-using-aiogram
 async def messages_cleanup() -> None:
-    msg_list = session.query(Messages_to_delete).order_by(Messages_to_delete.id).all()
+    msg_list = (
+        services.session.query(Messages_to_delete).order_by(Messages_to_delete.id).all()
+    )
     while True:
         for m in msg_list:
             if m.deletion_needed:
@@ -228,12 +228,12 @@ async def messages_cleanup() -> None:
                     await bot.delete_message(
                         chat_id=settings.CHAT_ID, message_id=m.message_id
                     )
-                    session.delete(m)
-                    session.commit()
+                    services.session.delete(m)
+                    services.session.commit()
                 except MessageToDeleteNotFound:
                     print("Сообщение не найдено!")
-                    session.delete(m)
-                    session.commit()
+                    services.session.delete(m)
+                    services.session.commit()
         await asyncio.sleep(600)
 
 
@@ -242,5 +242,5 @@ async def on_startup(dispatcher: Dispatcher) -> None:
 
 
 if __name__ == "__main__":
-    Base.metadata.create_all(engine)
+    Base.metadata.create_all(services.engine)
     executor.start_polling(dp, skip_updates=True, on_startup=on_startup)

services.py

@@ -1,6 +1,15 @@
 """Славный модуль с бизнес-логикой."""
 from models import Allowed_user
 
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+
+import settings
+
+engine = create_engine("sqlite:///" + str(settings.DB_PATH))
+Session = sessionmaker(bind=engine)
+session = Session()
+
 
 def auth(func):
     """Аутентификация.
@@ -33,7 +42,7 @@ def only_admins(func):
     async def wrapper(message):
         uid = message["from"]["id"]
 
-        if uid not in ADMINS:
+        if uid not in settings.ADMINS:
             return
 
         return await func(message)