Add integration diagnostics, enabled the download of the raw data pro…

custom_components/myenergi/diagnostics.py

@@ -0,0 +1,26 @@
+"""Diagnostics support for Daikin Diagnostics."""
+from __future__ import annotations
+from typing import Any
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.device_registry import DeviceEntry
+
+from pymyenergi.client import MyenergiClient
+from pymyenergi.connection import Connection
+
+from .const import DOMAIN
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, entry: ConfigEntry
+) -> dict[str, Any]:
+    """Return diagnostics for a config entry."""
+    data = {}
+    coordinator = hass.data[DOMAIN][entry.entry_id]
+    devices = []
+    # Don't cause a refresh when fetching devices
+    all_devices = await coordinator.client.get_devices("all", False)
+    for device in all_devices:
+        data[device.serial_number] = device.data
+    return data
+