修复数据库构建问题

JWT.py

@@ -1,12 +1,35 @@
 from fastapi.security import OAuth2PasswordBearer
-from model import database
-import asyncio
+from model import Setting
+from model.database import Database
 
 oauth2_scheme = OAuth2PasswordBearer(
     scheme_name='获取 JWT Bearer 令牌',
-    description='用于获取 JWT Bearer 令牌，需要以表单的形式提交',
+    description='用于获取 JWT Bearer 令牌,需要以表单的形式提交',
     tokenUrl="/api/token"
-    )
+)
 
-SECRET_KEY = asyncio.run(database.Database().get_setting('SECRET_KEY'))
-ALGORITHM = "HS256"
+ALGORITHM = "HS256"
+
+# 延迟加载 SECRET_KEY
+_SECRET_KEY_CACHE = None
+
+async def get_secret_key() -> str:
+    """
+    获取 JWT 密钥
+    
+    :return: JWT 密钥字符串
+    """
+    global _SECRET_KEY_CACHE
+    
+    if _SECRET_KEY_CACHE is None:
+        async with Database.get_session() as session:
+            setting = await Setting.get(
+                session=session,
+                condition=(Setting.name == 'SECRET_KEY')
+            )
+            if setting:
+                _SECRET_KEY_CACHE = setting.value
+            else:
+                raise RuntimeError("SECRET_KEY not found in database")
+    
+    return _SECRET_KEY_CACHE