Fix network calls, data return types

Author: klejejs

ThermiaOnlineAPI/api/ThermiaAPI.py

@@ -61,7 +61,7 @@ def __init__(self, email, password, api_type):
         }
 
         self.__session = requests.Session()
-        retry = Retry(connect=3, backoff_factor=0.5)
+        retry = Retry(total=20, connect=10, backoff_factor=0.1)
         adapter = HTTPAdapter(max_retries=retry)
         self.__session.mount("https://", adapter)
 

ThermiaOnlineAPI/model/HeatPump.py

@@ -595,6 +595,9 @@ def operational_status(self) -> Optional[Union[str, List[str]]]:
             name for value, name in data_items_list if value == current_register_value
         ]
 
+        if len(current_operation_mode) == 0:
+            return None
+
         if (
             len(current_operation_mode) != 1
             and current_register_value > 0
@@ -626,12 +629,12 @@ def available_operational_statuses(self) -> Optional[List[str]]:
         data = self.__get_all_operational_statuses_from_operational_status()
 
         if data is None:
-            return None
+            return []
 
         return list(data.values())
 
     @property
-    def available_operational_statuses_map(self):
+    def available_operational_statuses_map(self) -> Optional[ChainMap]:
         return self.__get_all_operational_statuses_from_operational_status()
 
     @property