Fix block I/O in the event loop

custom_components/maestro_mcz/__init__.py

@@ -38,7 +38,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
 
     pollling_interval = entry.options.get(CONF_POLLING_INTERVAL, DEFAULT_POLLING_INTERVAL)
 
-    mocked_files = has_mocked_files()
+    mocked_files = await has_mocked_files()
 
     if mocked_files is None:
         maestroapi: MaestroControllerInterface = MaestroController(
@@ -77,10 +77,11 @@ async def _async_update_listener(hass: HomeAssistant, entry: ConfigEntry) -> Non
     """Handle options update."""
     await hass.config_entries.async_reload(entry.entry_id)
 
-def has_mocked_files() -> list[str] | None:
+async def has_mocked_files() -> list[str] | None:
     try:
+        loop = asyncio.get_running_loop()
         folder_path = "config/custom_components/maestro_mcz/mocked"
-        files_in_dir = os.listdir(folder_path)
+        files_in_dir = await loop.run_in_executor(None, os.listdir, folder_path)
         if(files_in_dir is not None):
             return [folder_path + "/" + file for file in files_in_dir]
         else:

custom_components/maestro_mcz/maestro/controller/mocked_controller.py

@@ -1,5 +1,6 @@
 import dataclasses
 import json
+import asyncio
 
 from ..responses.state import State
 from ..responses.status import Status
@@ -51,7 +52,8 @@ async def StoveInfo(self):
         if(self._file_paths is not None):
             for _file_path in self._file_paths:
                 try:
-                    f = open(_file_path)
+                    loop = asyncio.get_running_loop()
+                    f = await loop.run_in_executor(None, open, _file_path)
                     data = json.load(f)
                     devices = data["data"]["devices"]
                     for stove in list(devices.values()):