from collections.abc import Generator

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

from app.core.config import get_settings


settings = get_settings()

connect_args: dict[str, object] = {}
if settings.database_url.startswith("sqlite"):
    connect_args["check_same_thread"] = False

engine = create_engine(settings.database_url, future=True, pool_pre_ping=True, connect_args=connect_args)
SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False, future=True)
Base = declarative_base()


def get_db() -> Generator[Session, None, None]:
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()