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

from . import config

connect_args = (
    {"check_same_thread": False}
    if config.DATABASE_URL.startswith("sqlite")
    else {}
)

engine = create_engine(config.DATABASE_URL, connect_args=connect_args)
SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False)


class Base(DeclarativeBase):
    pass


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