models.py

from sqlalchemy import Column, Integer, String, Text, DateTime, Boolean
from sqlalchemy.sql import func
from database import Base

class ChatMessage(Base):
    __tablename__ = "chat_messages"
    
    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, nullable=False)
    message = Column(Text, nullable=False)
    response = Column(Text, nullable=False)
    context = Column(Text)  # JSON string
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

class User(Base):
    __tablename__ = "users"
    
    id = Column(Integer, primary_key=True, index=True)
    email = Column(String(255), unique=True, index=True, nullable=False)
    name = Column(String(255), nullable=False)
    hashed_password = Column(String(255), nullable=False)
    is_active = Column(Boolean, default=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

class Tenant(Base):
    __tablename__ = "tenants"
    
    id = Column(Integer, primary_key=True, index=True)
    name = Column(String(255), nullable=False)
    domain = Column(String(255), unique=True, index=True)
    owner_id = Column(Integer, nullable=False)  # Reference to User
    is_active = Column(Boolean, default=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())