new bot structure

app/bot/__init__.py

@@ -0,0 +1,3 @@
+from .bot import main
+
+__all__ = ["main"]

app/bot/bot.py

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+import asyncio
+
+from aiogram import Bot, Dispatcher
+from aiogram_dialog import setup_dialogs
+
+from app.bot.dialogs.flows import dialogs_router
+from app.bot.handlers.commands import commands_router
+from config.config import settings
+
+bot = Bot(token=settings.bot_token)
+dp = Dispatcher()
+
+
+async def main():
+    setup_dialogs(dp)
+    dp.include_router(commands_router)
+    dp.include_router(dialogs_router)
+    await dp.start_polling(bot)
+
+
+if __name__ == "__main__":
+    asyncio.run(main())

app/bot/dialogs/flows/__init__.py

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+from aiogram import Router
+
+from .admin import admin_router
+from .user import user_router
+
+dialogs_router = Router(name="dialogs")
+dialogs_router.include_router(admin_router)
+dialogs_router.include_router(user_router)

app/bot/dialogs/flows/admin/__init__.py

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+from aiogram import Router
+
+admin_router = Router(name="admin dialogs")

app/bot/dialogs/flows/user/__init__.py

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+from aiogram import Router
+
+from .start.dialogs import start_dialog
+
+user_router = Router(name="user")
+user_router.include_router(start_dialog)

app/bot/dialogs/flows/user/start/dialogs.py

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+from aiogram_dialog import Dialog, Window
+from aiogram_dialog.widgets.text import Format
+
+from app.bot.dialogs.widgets.getters import username_getter
+
+from .states import StartSG
+
+start_dialog = Dialog(
+    Window(
+        Format("Hello, {username}"),
+        getter=username_getter,
+        state=StartSG.start,
+    )
+)

app/bot/dialogs/flows/user/start/states.py

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+from aiogram.fsm.state import State, StatesGroup
+
+
+class StartSG(StatesGroup):
+    start = State()

app/bot/dialogs/widgets/getters.py

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+from aiogram.types import User
+from aiogram_dialog import DialogManager
+
+
+async def username_getter(
+    dialog_manager: DialogManager, event_from_user: User, **kwargs
+) -> dict[str, str]:
+    return {"username": event_from_user.username}

app/bot/handlers/commands.py

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+from aiogram import Router
+from aiogram.filters import CommandStart
+from aiogram.types import Message
+from aiogram_dialog import DialogManager
+
+from app.bot.dialogs.flows.user.start.states import StartSG
+
+commands_router = Router(name="commands_router")
+
+@commands_router.message(CommandStart())
+async def command_start_process(message: Message, dialog_manager: DialogManager):
+    await dialog_manager.start(state=StartSG.start)