"""Domain entity and value object for example notes."""

from __future__ import annotations

from dataclasses import dataclass


@dataclass(slots=True)
class NoteDraft:
    """Value object describing the data needed to create a note."""

    title: str
    body: str


@dataclass(slots=True)
class Note:
    """Domain entity representing an immutable note."""

    id: int
    title: str
    body: str

    def to_dict(self) -> dict[str, str | int]:
        """Serialize the note for presentation layers."""

        return {"id": self.id, "title": self.title, "body": self.body}