from sqlalchemy import create_engine
from sqlalchemy.orm import Session, sessionmaker

from app.core.config import settings

# Ensure DB directory exists
DB_DIR = settings.DB_DIR
DB_DIR.mkdir(parents=True, exist_ok=True)

SQLALCHEMY_DATABASE_URL = f"sqlite:///{DB_DIR}/db.sqlite"

engine = create_engine(SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False})

SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)


def get_db() -> Session:
    """
    Dependency for getting a database session.
    """
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()