Spaces:
Sleeping
Sleeping
File size: 2,311 Bytes
aeffbc3 5263a14 aeffbc3 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 |
"""
Database models and connection for Neon PostgreSQL.
"""
import os
from datetime import datetime
from sqlalchemy import create_engine, Column, String, Text, DateTime, ForeignKey, JSON
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker, relationship
from sqlalchemy.dialects.postgresql import UUID
import uuid
# Get database URL from environment
DATABASE_URL = os.getenv("DATABASE_URL")
# Create SQLAlchemy engine
engine = create_engine(DATABASE_URL) if DATABASE_URL else None
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine) if engine else None
Base = declarative_base()
# Models
class Conversation(Base):
__tablename__ = "conversations"
id = Column(String, primary_key=True, default=lambda: str(uuid.uuid4()))
user_id = Column(String, nullable=False, index=True) # Clerk user ID
title = Column(String, nullable=False)
created_at = Column(DateTime, default=datetime.utcnow)
updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
summary = Column(Text, nullable=True) # Short summary of the conversation
# Relationship
messages = relationship("Message", back_populates="conversation", cascade="all, delete-orphan")
class Message(Base):
__tablename__ = "messages"
id = Column(String, primary_key=True, default=lambda: str(uuid.uuid4()))
conversation_id = Column(String, ForeignKey("conversations.id", ondelete="CASCADE"), nullable=False)
role = Column(String, nullable=False) # 'user' or 'assistant'
content = Column(Text, nullable=False)
thoughts = Column(JSON, nullable=True) # Store agent thoughts
created_at = Column(DateTime, default=datetime.utcnow)
# Relationship
conversation = relationship("Conversation", back_populates="messages")
# Database initialization
def init_db():
"""Create all tables in the database."""
if engine:
Base.metadata.create_all(bind=engine)
print("✅ Database tables created successfully")
else:
print("⚠️ DATABASE_URL not configured")
def get_db():
"""Get database session."""
if SessionLocal:
db = SessionLocal()
try:
yield db
finally:
db.close()
else:
yield None
|