import os

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

DATABASE_URL = os.environ.get("DATABASE_URL", "sqlite:///./time_track.db")
engine = create_engine(DATABASE_URL, pool_pre_ping=True)
SessionLocal = sessionmaker(bind=engine, autocommit=False, autoflush=False)


class Base(DeclarativeBase):
    pass


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