Add file list to attributes of folder sensor (#28338)

homeassistant/components/folder/sensor.py

@@ -64,10 +64,12 @@ class Folder(Entity):
         self._size = None
         self._name = os.path.split(os.path.split(folder_path)[0])[1]
         self._unit_of_measurement = "MB"
+        self._file_list = None
 
     def update(self):
         """Update the sensor."""
         files_list = get_files_list(self._folder_path, self._filter_term)
+        self._file_list = files_list
         self._number_of_files = len(files_list)
         self._size = get_size(files_list)
 
@@ -96,6 +98,7 @@ class Folder(Entity):
             "filter": self._filter_term,
             "number_of_files": self._number_of_files,
             "bytes": self._size,
+            "file_list": self._file_list,
         }
         return attr