from typing import Optional
from pydantic import BaseModel

class SystemConfigBase(BaseModel):
    key: str
    value: str
    description: Optional[str] = None

class SystemConfigCreate(SystemConfigBase):
    pass

class SystemConfigUpdate(BaseModel):
    value: str
    description: Optional[str] = None

class SystemConfig(SystemConfigBase):
    id: int
    
    class Config:
        from_attributes = True