Feat: Calendar updates refresh event sensors

Event sensors no longer call a refresh of the event calendar, instead,
the event calendar will trigger a refresh of event sensors making them
more responsive to updates in the calendar.

Issue: Fixes #163
Signed-off-by: Andrew Grimberg <tykeal@bardicgrove.org>

custom_components/rental_control/__init__.py

@@ -811,6 +811,10 @@ async def _refresh_calendar(self) -> None:
             _LOGGER.error(
                 "%s returned %s - %s", self.url, response.status, response.reason
             )
+
+            # Calendar has failed to load for some reason, unflag the calendar
+            # being loaded
+            self.calendar_loaded = False
         else:
             text = await response.text()
             # Some calendars are for some reason filled with NULL-bytes.
@@ -842,3 +846,6 @@ async def _refresh_calendar(self) -> None:
                     )
                     self.event = event
                     found_next_event = True
+
+        # signal an update to all the event sensors
+        await asyncio.gather(*[event.async_update() for event in self.event_sensors])

custom_components/rental_control/sensors/calsensor.py

@@ -249,8 +249,6 @@ async def async_update(self):
         if not self.rental_control_events.calendar_ready:
             return
 
-        await self.rental_control_events.update()
-
         self._code_generator = self.rental_control_events.code_generator
         self._code_length = self.rental_control_events.code_length
         event_list = self.rental_control_events.calendar