"""Database session management."""

from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker
from app.config import settings


# SQLite specific connection arguments
connect_args = {}
if settings.DATABASE_URL.startswith("sqlite"):
    connect_args = {"check_same_thread": False}

# Create database engine
engine = create_engine(
    settings.DATABASE_URL,
    connect_args=connect_args,
    pool_pre_ping=True,  # Verify connections before using
    echo=settings.DEBUG,  # Log SQL queries in debug mode
)

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