Refactoring of submit module, some fixes

maigret/settings.py

@@ -0,0 +1,29 @@
+import json
+
+
+class Settings:
+    presence_strings: list
+    supposed_usernames: list
+
+    def __init__(self, filename):
+        data = {}
+
+        try:
+            with open(filename, "r", encoding="utf-8") as file:
+                try:
+                    data = json.load(file)
+                except Exception as error:
+                    raise ValueError(
+                        f"Problem with parsing json contents of "
+                        f"settings file '{filename}':  {str(error)}."
+                    )
+        except FileNotFoundError as error:
+            raise FileNotFoundError(
+                f"Problem while attempting to access settings file '{filename}'."
+            ) from error
+
+        self.__dict__.update(data)
+
+    @property
+    def json(self):
+        return self.__dict__