"""Demo file showing off a model for SQLAlchemy."""

# from flask_sqlalchemy import SQLAlchemy

# db = SQLAlchemy()


# def connect_db(app):
#     """Connect to database."""

#     db.app = app
#     db.init_app(app)


# class Pet(db.Model):
#     """Pet."""

#     __tablename__ = "pets"

#     id = db.Column(db.Integer,
#                    primary_key=True,
#                    autoincrement=True)
#     name = db.Column(db.String(50),
#                      nullable=False,
#                      unique=True)
#     species = db.Column(db.String(30), nullable=True)
#     hunger = db.Column(db.Integer, nullable=False, default=20)

    # def greet(self):
    #     """Greet using name."""

    #     return f"I'm {self.name} the {self.species or 'thing'}"

    # def feed(self, units=10):
    #     """Nom nom nom."""

    #     self.hunger -= units
    #     self.hunger = max(self.hunger, 0)

    # def __repr__(self):
    #     """Show info about pet."""

    #     p = self
    #     return f"<Pet {p.id} {p.name} {p.species} {p.hunger}>"

    # @classmethod
    # def get_by_species(cls, species):
    #     """Get all pets matching that species."""

    #     return cls.query.filter_by(species=species).all()