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from flask_appbuilder import Model
from sqlalchemy import Column, ForeignKey, Integer
from sqlalchemy.orm import relationship

from superset import security_manager
from superset.models.helpers import AuditMixinNullable


class UserAttribute(Model, AuditMixinNullable):

    """
    Custom attributes attached to the user.

    Extending the user attribute is tricky due to its dependency on the
    authentication typew an circular dependencies in Superset. Instead, we use
    a custom model for adding attributes.

    """

    __tablename__ = "user_attribute"
    id = Column(Integer, primary_key=True)
    user_id = Column(Integer, ForeignKey("ab_user.id"))
    user = relationship(
        security_manager.user_model, backref="extra_attributes", foreign_keys=[user_id]
    )

    welcome_dashboard_id = Column(Integer, ForeignKey("dashboards.id"))
    welcome_dashboard = relationship("Dashboard")