Add diagnostics to LiteJet (#86600)

homeassistant/components/litejet/diagnostics.py

@@ -0,0 +1,22 @@
+"""Support for LiteJet diagnostics."""
+from typing import Any
+
+from pylitejet import LiteJet
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+
+from .const import DOMAIN
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, entry: ConfigEntry
+) -> dict[str, Any]:
+    """Return diagnostics for LiteJet config entry."""
+    system: LiteJet = hass.data[DOMAIN]
+    return {
+        "loads": list(system.loads()),
+        "button_switches": list(system.button_switches()),
+        "scenes": list(system.scenes()),
+        "connected": system.connected,
+    }