re-structure code

app/dependencies/user.py

@@ -0,0 +1,32 @@
+from fastapi import Depends, HTTPException
+from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
+from sqlalchemy.orm import Session
+
+from app.auth import get_token_by_access_token
+
+from .database import get_db
+from app.database import (
+    User as DBUser,
+)
+
+security = HTTPBearer()
+
+
+async def get_current_user(
+    credentials: HTTPAuthorizationCredentials = Depends(security),
+    db: Session = Depends(get_db),
+) -> DBUser:
+    """获取当前认证用户"""
+    token = credentials.credentials
+
+    # 验证令牌
+    token_record = get_token_by_access_token(db, token)
+    if not token_record:
+        raise HTTPException(status_code=401, detail="Invalid or expired token")
+
+    # 获取用户
+    user = db.query(DBUser).filter(DBUser.id == token_record.user_id).first()
+    if not user:
+        raise HTTPException(status_code=404, detail="User not found")
+
+    return user