rewrite settings a tiny bit, add list support

ubot/settings.py

@@ -8,6 +8,11 @@ class Settings():
         self.config = SafeConfigParser()
         self.config.read("settings.ini")
 
+    def write_changes(self):
+        with open('settings.ini', 'w') as config_file:
+            self.config.write(config_file)
+            config_file.close()
+
     def get_config(self, key, default=None):
         return self.config.get("DEFAULT", key, fallback=default)
 
@@ -15,8 +20,40 @@ class Settings():
         return bool(self.config.get("DEFAULT", key, fallback=default) == "True")
 
     def set_config(self, key, value):
+        value = str(value)
         self.config.set("DEFAULT", key, value)
+        self.write_changes()
 
-        with open('settings.ini', 'w') as config_file:
-            self.config.write(config_file)
-            config_file.close()
+    def add_to_list(self, key, value):
+        config_value = self.config.get("DEFAULT", key, fallback=None)
+        value = str(value)
+
+        if config_value:
+            config_list = config_value.split("|")
+        else:
+            config_list = []
+
+        config_list.append(value)
+
+        self.config.set("DEFAULT", key, "|".join(config_list))
+        self.write_changes()
+
+    def remove_from_list(self, key, value):
+        config_value = self.config.get("DEFAULT", key, fallback=None)
+        value = str(value)
+
+        if config_value:
+            config_list = config_value.split("|")
+        else:
+            return
+
+        if value in config_list:
+            config_list.remove(value)
+        else:
+            return
+
+        self.config.set("DEFAULT", key, "|".join(config_list))
+        self.write_changes()
+
+    def get_list(self, key):
+        return self.config.get("DEFAULT", key, fallback="").split("|")