from sqlalchemy.orm import Mapped

from fooder.domain.base import Base, CommonMixin


class Product(Base, CommonMixin):
    """Product."""

    name: Mapped[str]

    protein: Mapped[float]
    carb: Mapped[float]
    fat: Mapped[float]
    fiber: Mapped[float]
    hard_coded_calories: Mapped[float | None]
    barcode: Mapped[str | None]

    @property
    def calories(self) -> float:
        """calories.

        :rtype: float
        """
        if self.hard_coded_calories:
            return self.hard_coded_calories

        return self.protein * 4 + self.carb * 4 + self.fat * 9 + self.fiber * 2