from __future__ import annotations
from collections.abc import Generator
from sqlalchemy import create_engine
from sqlalchemy.orm import DeclarativeBase, Session, sessionmaker
from app.core.config import get_settings
class Base(DeclarativeBase):
"""Base declarative class shared by all ORM models."""
settings = get_settings()
connect_args = {"check_same_thread": False} if settings.database_url.startswith("sqlite") else {}
engine = create_engine(settings.database_url, connect_args=connect_args)
SessionLocal = sessionmaker(bind=engine, autoflush=False, autocommit=False, expire_on_commit=False)
def get_session() -> Generator[Session, None, None]:
"""Provide a SQLAlchemy session for request scope usage."""
session = SessionLocal()
try:
yield session
finally:
session.close()