"""Modelos de la base de datos: alimentos y recetas del catálogo compartido."""
from sqlalchemy import Column, Float, Integer, String, JSON, DateTime, func

from db import Base


class Food(Base):
    __tablename__ = "foods"

    id = Column(String, primary_key=True)
    name = Column(String, nullable=False, index=True)
    kcal_100g = Column(Float, nullable=False)
    zone = Column(String, default="otros")
    portions = Column(JSON, default=list)  # [{"name","grams"}]
    barcode = Column(String, nullable=True)
    source = Column(String, default="user")  # off | user
    off_id = Column(String, nullable=True, index=True)
    author_token = Column(String, nullable=True)
    created_at = Column(DateTime, server_default=func.now())

    def to_app(self) -> dict:
        """Serializa a la forma que espera la app (Food.fromJson)."""
        return {
            "id": self.id,
            "name": self.name,
            "kcalPer100g": self.kcal_100g,
            "zone": self.zone or "otros",
            "portions": self.portions or [],
            "origin": "remote",
        }


class Recipe(Base):
    __tablename__ = "recipes"

    id = Column(String, primary_key=True)
    name = Column(String, nullable=False, index=True)
    servings = Column(Integer, default=1)
    items = Column(JSON, default=list)  # [{"food": {...}, "grams", "portionLabel"}]
    author_token = Column(String, nullable=True)
    created_at = Column(DateTime, server_default=func.now())

    def to_app(self) -> dict:
        return {
            "id": self.id,
            "name": self.name,
            "servings": self.servings,
            "items": self.items or [],
        }