Add diagnostics for Pure Energie integration (#77151)

* Add diagnostics for Pure Energie integration

* Update test after feedback

homeassistant/components/pure_energie/diagnostics.py

+"""Diagnostics support for Pure Energie."""
+from __future__ import annotations
+
+from dataclasses import asdict
+from typing import Any
+
+from homeassistant.components.diagnostics import async_redact_data
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import CONF_HOST
+from homeassistant.core import HomeAssistant
+
+from . import PureEnergieDataUpdateCoordinator
+from .const import DOMAIN
+
+TO_REDACT = {
+    CONF_HOST,
+    "n2g_id",
+}
+
+
+async def async_get_config_entry_diagnostics(
+    hass: HomeAssistant, entry: ConfigEntry
+) -> dict[str, Any]:
+    """Return diagnostics for a config entry."""
+    coordinator: PureEnergieDataUpdateCoordinator = hass.data[DOMAIN][entry.entry_id]
+
+    return {
+        "entry": {
+            "title": entry.title,
+            "data": async_redact_data(entry.data, TO_REDACT),
+        },
+        "data": {
+            "device": async_redact_data(asdict(coordinator.data.device), TO_REDACT),
+            "smartbridge": asdict(coordinator.data.smartbridge),
+        },
+    }

tests/components/pure_energie/test_diagnostics.py

+"""Tests for the diagnostics data provided by the Pure Energie integration."""
+from aiohttp import ClientSession
+
+from homeassistant.components.diagnostics import REDACTED
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+from tests.components.diagnostics import get_diagnostics_for_config_entry
+
+
+async def test_diagnostics(
+    hass: HomeAssistant,
+    hass_client: ClientSession,
+    init_integration: MockConfigEntry,
+) -> None:
+    """Test diagnostics."""
+    assert await get_diagnostics_for_config_entry(
+        hass, hass_client, init_integration
+    ) == {
+        "entry": {
+            "title": "home",
+            "data": {
+                "host": REDACTED,
+            },
+        },
+        "data": {
+            "device": {
+                "batch": "SBP-HMX-210318",
+                "firmware": "1.6.16",
+                "hardware": 1,
+                "manufacturer": "NET2GRID",
+                "model": "SBWF3102",
+                "n2g_id": REDACTED,
+            },
+            "smartbridge": {
+                "energy_consumption_total": 17762.1,
+                "energy_production_total": 21214.6,
+                "power_flow": 338,
+            },
+        },
+    }