models + refactor

repos/settings_repo.py

@@ -0,0 +1,26 @@
+from typing import Optional
+from motor.motor_asyncio import AsyncIOMotorClient
+from models.Settings import SystemSettings
+from datetime import datetime, UTC
+
+class SettingsRepo:
+    def __init__(self, client: AsyncIOMotorClient, db_name: str):
+        self.collection = client[db_name]["settings"]
+
+    async def get_settings(self) -> SystemSettings:
+        doc = await self.collection.find_one({"_id": "system_settings"})
+        if not doc:
+            # Create default settings if not exists
+            settings = SystemSettings()
+            await self.collection.insert_one(settings.model_dump(by_alias=True))
+            return settings
+        return SystemSettings(**doc)
+
+    async def update_settings(self, settings: SystemSettings) -> bool:
+        settings.updated_at = datetime.now(UTC)
+        result = await self.collection.replace_one(
+            {"_id": "system_settings"},
+            settings.model_dump(by_alias=True),
+            upsert=True
+        )
+        return result.modified_count > 0 or result.upserted_id is not None