Retry polling for new data hourly if needed

And this should fix the other side of issue #326 (the lack of retries if
data is not available at the usual polling time).

Author: Arto Jantunen

custom_components/nordpool/__init__.py

@@ -15,6 +15,7 @@
 
 from .aio_price import AioPrices
 from .events import async_track_time_change_in_tz
+from .misc import stock
 
 DOMAIN = "nordpool"
 _LOGGER = logging.getLogger(__name__)
@@ -153,10 +154,18 @@ async def new_day_cb(_):
 
             async_dispatcher_send(hass, EVENT_NEW_DAY)
 
-        async def new_hr(_):
-            """Callback to tell the sensors to update on a new hour."""
+        async def new_hr(tdo):
+            """Callback to tell the sensors to update on a new hour.
+            and poll data if needed.
+            """
             _LOGGER.debug("Called new_hr callback")
             async_dispatcher_send(hass, EVENT_NEW_HOUR)
+            if not api.tomorrow_valid_all_areas():
+                now = stock(dt_utils.now())
+                if now >= now.replace(
+                        hour=13, minute=RANDOM_MINUTE, second=RANDOM_SECOND
+                ):
+                    new_data_cb(tdo)
 
         async def new_data_cb(tdo):
             """Callback to fetch new data for tomorrows prices at 1300ish CET