update server

ReinLoop/core/device_heartbeat.py

@@ -0,0 +1,20 @@
+"""Report the ReinLoop application's Server reachability for Panel status."""
+
+
+def heartbeat_device(timeout=5):
+    """Refresh the current device's Server heartbeat and return its timestamp."""
+    import requests
+    from api import data_record_url, the_folder
+
+    try:
+        response = requests.post(data_record_url, json={
+            "type": "deviceHeartbeat",
+            "deviceId": the_folder,
+        }, timeout=timeout)
+        response.raise_for_status()
+        result = response.json()
+    except Exception as exc:
+        raise ValueError(f"设备心跳请求失败: {exc}") from exc
+    if not result.get("success"):
+        raise ValueError(result.get("errMsg", "设备心跳被服务端拒绝"))
+    return result.get("lastSeenAt")