Do not use a naive datetime.now() in BraviaTV (#179806)

homeassistant/components/braviatv/coordinator.py

@@ -23,6 +23,7 @@ from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed, HomeAssistantError
 from homeassistant.helpers.debounce import Debouncer
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
+from homeassistant.util import dt as dt_util
 
 from .const import (
     CONF_NICKNAME,
@@ -240,11 +241,13 @@ class BraviaTVCoordinator(DataUpdateCoordinator[None]):
         self.source = None
         if start_datetime := playing_info.get("startDateTime"):
             start_datetime = datetime.fromisoformat(start_datetime)
-            current_datetime = datetime.now().replace(tzinfo=start_datetime.tzinfo)  # pylint: disable=home-assistant-enforce-naive-now
-            self.media_position = int(
-                (current_datetime - start_datetime).total_seconds()
-            )
-            self.media_position_updated_at = datetime.now()  # pylint: disable=home-assistant-enforce-naive-now
+            if start_datetime.tzinfo is None:
+                start_datetime = start_datetime.replace(
+                    tzinfo=dt_util.get_default_time_zone()
+                )
+            now = dt_util.utcnow()
+            self.media_position = int((now - start_datetime).total_seconds())
+            self.media_position_updated_at = now
         else:
             self.media_position = None
             self.media_position_updated_at = None

tests/components/braviatv/test_coordinator.py

@@ -0,0 +1,48 @@
+"""Test the BraviaTV coordinator."""
+
+from datetime import UTC, datetime
+from unittest.mock import AsyncMock
+
+import pytest
+
+from homeassistant.components.braviatv.const import CONF_USE_PSK, DOMAIN
+from homeassistant.components.braviatv.coordinator import BraviaTVCoordinator
+from homeassistant.const import CONF_HOST, CONF_MAC, CONF_PIN
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+
+
+@pytest.mark.parametrize(
+    "start_datetime",
+    [
+        "2026-08-22T12:00:00",  # naive, treated as local time (CEST UTC+2)
+        "2026-08-22T12:00:00+02:00",  # aware
+    ],
+)
+@pytest.mark.freeze_time("2026-08-22T12:00:00+00:00")
+async def test_async_update_playing(
+    hass: HomeAssistant,
+    start_datetime: str,
+) -> None:
+    """Test updating playing info with a start datetime."""
+    await hass.config.async_set_time_zone("Europe/Warsaw")
+    config_entry = MockConfigEntry(
+        domain=DOMAIN,
+        data={
+            CONF_HOST: "localhost",
+            CONF_MAC: "AA:BB:CC:DD:EE:FF",
+            CONF_USE_PSK: True,
+            CONF_PIN: "12345qwerty",
+        },
+    )
+    client = AsyncMock()
+    client.get_playing_info.return_value = {"startDateTime": start_datetime}
+    coordinator = BraviaTVCoordinator(hass, config_entry, client)
+
+    await coordinator.async_update_playing()
+
+    assert coordinator.media_position == 7200
+    assert coordinator.media_position_updated_at == datetime(
+        2026, 8, 22, 12, 0, 0, tzinfo=UTC
+    )