from sqlalchemy import create_engine, event
from sqlalchemy.orm import sessionmaker, DeclarativeBase
from app.config import get_settings

settings = get_settings()

_connect_args: dict = {}
if settings.DATABASE_URL.startswith("postgresql"):
    _connect_args = {"sslmode": "prefer"}

engine = create_engine(
    settings.DATABASE_URL,
    connect_args=_connect_args,
    pool_size=10,
    max_overflow=20,
    pool_pre_ping=True,
    pool_recycle=3600,
)


class Base(DeclarativeBase):
    pass


SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)


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