from extensions import db

class License(db.Model):
    __tablename__ = "licenses"

    id = db.Column(db.Integer, primary_key=True, autoincrement=True)
    user_id = db.Column(db.Integer, db.ForeignKey("user.id"), nullable=False)
    service_id = db.Column(db.Integer, db.ForeignKey("service.id"), nullable=False)
    license_key = db.Column(db.String(255), nullable=False, unique=True)
    max_service_instances = db.Column(db.Integer, nullable=False)
    start_date = db.Column(db.Date, nullable=False)
    end_date = db.Column(db.Date, nullable=True)
    created_at = db.Column(db.DateTime, default=db.func.current_timestamp())
    updated_at = db.Column(db.DateTime, default=db.func.current_timestamp(), onupdate=db.func.current_timestamp())
    service = db.relationship("Service", backref="service_licenses")


    def __repr__(self):
        return f"<License {self.license_key}>"

    def is_active(self):
        """Verifica se a licença está ativa com base na data."""
        from datetime import date
        today = date.today()
        return self.start_date <= today and (self.end_date is None or self.end_date >= today)