Fix lacrosse_view fetching of latest data (#85117)

lacrosse_view: fixed fetching of latest data

When using datetime.utcnow(), it only replaces timezone information with
UTC making the actual time offset by the timezone. When you are in UTC-
timezones, it makes no issue as the offset is in the future, but when in
UTC+, the last hour(s) of data are missing.

This commits swtiches to time.time() as UTC timestamp is actually what
the API expects.

It also reduces the window to one hour what noticeably improves the API
performance.

homeassistant/components/lacrosse_view/coordinator.py

@@ -1,7 +1,8 @@
 """DataUpdateCoordinator for LaCrosse View."""
 from __future__ import annotations
 
-from datetime import datetime, timedelta
+from datetime import timedelta
+from time import time
 
 from lacrosse_view import HTTPError, LaCrosse, Location, LoginError, Sensor
 
@@ -30,7 +31,7 @@ class LaCrosseUpdateCoordinator(DataUpdateCoordinator[list[Sensor]]):
     ) -> None:
         """Initialize DataUpdateCoordinator for LaCrosse View."""
         self.api = api
-        self.last_update = datetime.utcnow()
+        self.last_update = time()
         self.username = entry.data["username"]
         self.password = entry.data["password"]
         self.hass = hass
@@ -45,26 +46,22 @@ class LaCrosseUpdateCoordinator(DataUpdateCoordinator[list[Sensor]]):
 
     async def _async_update_data(self) -> list[Sensor]:
         """Get the data for LaCrosse View."""
-        now = datetime.utcnow()
+        now = int(time())
 
-        if self.last_update < now - timedelta(minutes=59):  # Get new token
+        if self.last_update < now - 59 * 60:  # Get new token once in a hour
             self.last_update = now
             try:
                 await self.api.login(self.username, self.password)
             except LoginError as error:
                 raise ConfigEntryAuthFailed from error
 
-        # Get the timestamp for yesterday at 6 PM (this is what is used in the app, i noticed it when proxying the request)
-        yesterday = now - timedelta(days=1)
-        yesterday = yesterday.replace(hour=18, minute=0, second=0, microsecond=0)
-        yesterday_timestamp = datetime.timestamp(yesterday)
-
         try:
+            # Fetch last hour of data
             sensors = await self.api.get_sensors(
                 location=Location(id=self.id, name=self.name),
                 tz=self.hass.config.time_zone,
-                start=str(int(yesterday_timestamp)),
-                end=str(int(datetime.timestamp(now))),
+                start=str(now - 3600),
+                end=str(now),
             )
         except HTTPError as error:
             raise ConfigEntryNotReady from error