from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from app.core.config import settings

# Create SQLAlchemy engine
engine = create_engine(
    settings.DATABASE_URL,
    # Required for SQLite to prevent issues with FastAPI's async nature
    connect_args={"check_same_thread": False} if "sqlite" in settings.DATABASE_URL else {}
)

# Create a session factory
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

# Dependency to get DB session (we'll use this in routers)
def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()