Add (lazy) DBSettings object inspired by django.conf.settings

dbsettings/functions.py

@@ -1,4 +1,50 @@
-from dbsettings.models import Setting
+from .models import Setting
+
+from django.utils.functional import LazyObject, empty
+
+class DBSettings:
+    def __init__(self):
+        for setting in Setting.objects.all():
+            if setting.key.isupper():
+                setattr(self, setting.key, setting.value)
+
+    def __setattr__(self, name, value):
+        setting, _ = Setting.objects.get_or_create(key=name)
+        setting.value = value
+        setting.save()
+
+        self.__dict__[name] = value
+
+    def __delattr__(self, name):
+        setting = Setting.objects.get(key=name)
+        setting.delete()
+
+        self.__dict__.pop(name, None)
+
+class LazyDBSettings(LazyObject):
+    def _setup(self):
+        self._wrapped = DBSettings()
+
+    def __getattr__(self, name):
+        if self._wrapped is empty:
+            self._setup()
+
+        val = getattr(self._wrapped, name)
+
+        self.__dict__[name] = val
+        return val
+
+    def __setattr__(self, name, value):
+        if name == "_wrapped":
+            self.__dict__.clear()
+        else:
+            self.__dict__.pop(name, None)
+
+        super().__setattr__(name, value)
+
+    def __delattr__(self, name):
+        super().__delattr__(name)
+        self.__dict__.pop(name, None)
 
 def getValue(key, default=None):
     try:
@@ -15,3 +61,4 @@ def setValue(key, value):
     obj.save()
     return True
 
+dbsettings = LazyDBSettings()