"""Flask-Login user loader — registered with login_manager in models.py."""

from app.extensions import login_manager


@login_manager.user_loader
def load_user(user_id):
    """Load a user by ID for Flask-Login session management.

    Returns the correct polymorphic subclass (Admin, Coach, Player, etc.)
    automatically because SQLAlchemy resolves the identity column.
    """
    from app.models.user_model.user import User
    return User.query.get(int(user_id))