fix downloaders && mediaservers && notifications

app/helper/notification.py

@@ -0,0 +1,20 @@
+from app.db.systemconfig_oper import SystemConfigOper
+from app.schemas.types import SystemConfigKey
+
+
+class NotificationHelper:
+    """
+    消息通知渠道帮助类
+    """
+
+    def __init__(self):
+        self.systemconfig = SystemConfigOper()
+
+    def get_notifications(self) -> dict:
+        """
+        获取消息通知渠道
+        """
+        notification_conf: dict = self.systemconfig.get(SystemConfigKey.Notifications)
+        if not notification_conf:
+            return {}
+        return notification_conf