from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker, DeclarativeBase
from app.config import settings

db_url = settings.database_url
connect_args = {}
if db_url.startswith("sqlite"):
    connect_args["check_same_thread"] = False

engine = create_engine(db_url, connect_args=connect_args, pool_pre_ping=True)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)


class Base(DeclarativeBase):
    pass


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