Squashed 'core/' content from commit 92ec910

git-subtree-dir: core
git-subtree-split: 92ec910a132e379a3a6e442a75bcb07cac0f0010

backend/app/core/deps.py

@@ -0,0 +1,34 @@
+from fastapi import Depends, HTTPException, status
+from fastapi.security import OAuth2PasswordBearer
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy import select
+from app.core.database import get_db
+from app.core.security import decode_access_token
+from app.models.user import User
+
+oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/v1/auth/login")
+
+
+async def get_current_user(
+    token: str = Depends(oauth2_scheme),
+    db: AsyncSession = Depends(get_db),
+) -> User:
+    payload = decode_access_token(token)
+    if payload is None:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="无效的认证凭据")
+    user_id = payload.get("sub")
+    if user_id is None:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="无效的认证凭据")
+    result = await db.execute(select(User).where(User.id == int(user_id)))
+    user = result.scalar_one_or_none()
+    if user is None or not user.is_active:
+        raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED, detail="用户不存在或已禁用")
+    return user
+
+
+def require_roles(*roles: str):
+    async def checker(user: User = Depends(get_current_user)):
+        if user.role not in roles:
+            raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail="权限不足")
+        return user
+    return checker