"""# Summary

Item domain model — the neutral resource used throughout the template.
"""
from pydantic import BaseModel, Field


class Item(BaseModel):
    """A single countable resource.

    Attributes:
        id (int | None): Server-assigned identifier. Defaults to None.
        name (str): Item name.
        quantity (int): Item quantity. Defaults to 1.
    """

    id: int | None = None
    name: str
    quantity: int = Field(default=1)

    model_config = {"extra": "ignore"}