from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker, declarative_base, Session
from app.core.config import settings
import os

connect_args = {}
if settings.DATABASE_URL.startswith("sqlite"):
    connect_args["check_same_thread"] = False
    db_path = settings.DATABASE_URL.replace("sqlite:///", "")
    parent = os.path.dirname(db_path)
    if parent:
        os.makedirs(parent, exist_ok=True)

engine = create_engine(settings.DATABASE_URL, connect_args=connect_args)
SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False)
Base = declarative_base()


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