"""
SQLAlchemy session configuration
"""
from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker, Session
from typing import Generator
from app.core.settings import settings


# Create engine
engine = create_engine(
    settings.DATABASE_URL,
    echo=settings.DB_ECHO,
    pool_pre_ping=True,
    pool_size=10,
    max_overflow=20
)

# Create session factory
SessionLocal = sessionmaker(
    autocommit=False,
    autoflush=False,
    bind=engine
)


def get_db() -> Generator[Session, None, None]:
    """Dependency pour obtenir une session DB"""
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()