from app.extensions import db


class User(db.Model):
    """Simple user model for testing database connectivity."""

    __tablename__ = "users"

    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(80), unique=True, nullable=False)

    def to_dict(self):
        return {"id": self.id, "username": self.username}