fix #72, #74: fix odo meter max limit, use Unit_of_measurement on km/…

…miles/meter, fix refresh token on too long expired token

custom_components/polestar_api/entity.py

@@ -27,3 +27,4 @@ def __init__(self, device: Polestar) -> None:
     async def async_added_to_hass(self) -> None:
         """Add listener for state changes."""
         await super().async_added_to_hass()
+

custom_components/polestar_api/pypolestar/auth.py

@@ -27,7 +27,8 @@ async def get_token(self, refresh=False) -> None:
         """Get the token from Polestar."""
         headers = {"Content-Type": "application/json"}
         operationName = "getAuthToken"
-        if not refresh:
+        # can't use refresh if the token is expired or not set even if refresh is True
+        if not refresh or self.token_expiry is None or self.token_expiry < datetime.now():
             code = await self._get_code()
             if code is None:
                 return