from datetime import datetime
from typing import Optional
from pydantic import BaseModel, Field


class ItemBase(BaseModel):
    name: str = Field(..., min_length=1, max_length=100)
    description: Optional[str] = None
    price: int = Field(..., gt=0)  # Price in cents
    is_active: bool = True


class ItemCreate(ItemBase):
    pass


class ItemUpdate(BaseModel):
    name: Optional[str] = Field(None, min_length=1, max_length=100)
    description: Optional[str] = None
    price: Optional[int] = Field(None, gt=0)
    is_active: Optional[bool] = None


class ItemResponse(ItemBase):
    id: int
    created_at: datetime
    updated_at: datetime
    
    class Config:
        from_attributes = True