gpt_chat_bot/app/main.py
2023-09-22 22:59:52 +03:00

77 lines
2.4 KiB
Python

import asyncio
from functools import cached_property
from fastapi import FastAPI
from fastapi.responses import UJSONResponse
from app.core.bot import BotApplication, BotQueue
from app.core.handlers import command_handlers
from app.routers import api_router
from settings.config import AppSettings, get_settings
class Application:
def __init__(self, settings: AppSettings, bot_app: BotApplication) -> None:
self.app = FastAPI(
title="Chat gpt bot",
description="Bot for proxy to chat gpt in telegram",
version="0.0.3",
docs_url="/" + "/".join([settings.api_prefix.strip("/"), "docs"]),
redoc_url="/" + "/".join([settings.api_prefix.strip("/"), "redocs"]),
openapi_url="/" + "/".join([settings.api_prefix.strip("/"), "openapi.json"]),
default_response_class=UJSONResponse,
)
self.app.state.settings = settings
self.app.state.queue = BotQueue(bot_app=bot_app)
self.bot_app = bot_app
self.app.include_router(api_router)
self.configure_hooks()
@cached_property
def fastapi_app(self) -> FastAPI:
return self.app
def configure_hooks(self) -> None:
if self.bot_app.start_with_webhook:
self.app.add_event_handler("startup", self._on_start_up)
else:
self.app.add_event_handler("startup", self.bot_app.polling)
self.app.add_event_handler("shutdown", self._on_shutdown)
async def _on_start_up(self) -> None:
await self.bot_app.set_webhook()
loop = asyncio.get_event_loop()
loop.create_task(self.app.state.queue.get_updates_from_queue())
async def _on_shutdown(self) -> None:
await asyncio.gather(self.bot_app.delete_webhook(), self.bot_app.shutdown())
def create_app(settings: AppSettings | None = None) -> FastAPI:
settings = settings or get_settings()
bot_app = BotApplication(settings=settings, handlers=command_handlers.handlers)
return Application(settings=settings, bot_app=bot_app).fastapi_app
def main() -> None:
import uvicorn
app = create_app() # noqa: NEW100
"""Entrypoint of the application."""
uvicorn.run(
"app.main:create_app",
workers=app.state.settings.WORKERS_COUNT,
host=app.state.settings.APP_HOST,
port=app.state.settings.APP_PORT,
reload=app.state.settings.RELOAD,
factory=True,
)
if __name__ == "__main__":
main()