app/database.py

from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from sqlalchemy.ext.declarative import declarative_base
from app.config import settings

# Use NEON_DATABASE_URL if available, otherwise fall back to DATABASE_URL
SQLALCHEMY_DATABASE_URL = settings.NEON_DATABASE_URL or settings.DATABASE_URL or "sqlite:///./test.db"
engine = create_engine(SQLALCHEMY_DATABASE_URL)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
Base = declarative_base()

def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()