from collections.abc import Generator

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

from app.core.config import get_settings


settings = get_settings()
engine = create_engine(
    settings.database_url,
    future=True,
    pool_pre_ping=True,
    pool_size=settings.database_pool_size,
    max_overflow=settings.database_max_overflow,
    pool_timeout=settings.database_pool_timeout,
)
SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False, future=True)


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