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