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# main.py
import logging
from contextlib import asynccontextmanager
from typing import Optional
from fastapi import FastAPI, Request, HTTPException, Depends, Header
from fastapi.responses import JSONResponse, StreamingResponse
from app.core.config import settings
from app.providers.notion_provider import NotionAIProvider
logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
logger = logging.getLogger(__name__)
provider = NotionAIProvider()
@asynccontextmanager
async def lifespan(app: FastAPI):
logger.info(f"应用启动中... {settings.APP_NAME} v{settings.APP_VERSION}")
logger.info("服务已配置为 Notion AI 代理模式。")
logger.info(f"服务将在 http://localhost:{settings.NGINX_PORT} 上可用")
yield
logger.info("应用关闭。")
app = FastAPI(
title=settings.APP_NAME,
version=settings.APP_VERSION,
description=settings.DESCRIPTION,
lifespan=lifespan
)
async def verify_api_key(authorization: Optional[str] = Header(None)):
if settings.API_MASTER_KEY and settings.API_MASTER_KEY != "1":
if not authorization or "bearer" not in authorization.lower():
raise HTTPException(status_code=401, detail="需要 Bearer Token 认证。")
token = authorization.split(" ")[-1]
if token != settings.API_MASTER_KEY:
raise HTTPException(status_code=403, detail="无效的 API Key。")
@app.post("/v1/chat/completions", dependencies=[Depends(verify_api_key)])
async def chat_completions(request: Request) -> StreamingResponse:
try:
request_data = await request.json()
return await provider.chat_completion(request_data)
except Exception as e:
logger.error(f"处理聊天请求时发生顶层错误: {e}", exc_info=True)
raise HTTPException(status_code=500, detail=f"内部服务器错误: {str(e)}")
@app.get("/v1/models", dependencies=[Depends(verify_api_key)], response_class=JSONResponse)
async def list_models():
return await provider.get_models()
@app.get("/", summary="根路径")
def root():
return {"message": f"欢迎来到 {settings.APP_NAME} v{settings.APP_VERSION}. 服务运行正常。"}
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