add fastapi init

chat/deps/auth.py

@@ -0,0 +1,21 @@
+from fastapi import Depends, HTTPException, status, Request
+from sqlalchemy.orm import Session
+
+from db.session import get_db
+from models.user import AuthToken, DjangoUser
+
+
+def get_current_user(request: Request, db: Session = Depends(get_db)):
+    auth = request.headers.get('Authorization')
+    if not auth or not auth.startswith('Bearer '):
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail='未登录')
+
+    token = auth.split(' ', 1)[1]
+    token_obj = db.query(AuthToken).filter(AuthToken.key == token).first()
+    if not token_obj:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail='Token无效或已过期')
+
+    user = db.query(DjangoUser).filter(DjangoUser.id == token_obj.user_id).first()
+    if not user:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail='用户不存在')
+    return {"user_id": user.id, "username": user.username, "email": user.email}