Sequential Questioning MCP Server

from datetime import datetime from sqlalchemy import Column, String, DateTime, Boolean from sqlalchemy.sql import func from sqlalchemy.orm import relationship from uuid import uuid4 from app.models.database import Base class UserSession(Base): """Model representing a user session. A user session represents a continuous interaction with a user and may contain multiple conversations. """ __tablename__ = "user_sessions" id = Column(String, primary_key=True, default=lambda: str(uuid4())) user_identifier = Column(String, nullable=True, index=True) context = Column(String, nullable=True) is_active = Column(Boolean, default=True) created_at = Column(DateTime, default=func.now()) updated_at = Column(DateTime, default=func.now(), onupdate=func.now()) # Relationships conversations = relationship("Conversation", back_populates="user_session", cascade="all, delete-orphan") def __repr__(self): return f"<UserSession(id={self.id}, user_identifier={self.user_identifier})>"