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

from app.core.config import settings
from app.core.logging import get_logger

"""Database connection and session management."""

logger = get_logger(__name__)

engine = create_engine(settings.database_url, connect_args={"check_same_thread": False})
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

Base = declarative_base()


def get_db():
    """Dependency that provides a database session."""
    logger.debug("Creating new database session")
    db = SessionLocal()
    try:
        yield db
    finally:
        logger.debug("Closing database session")
        db.close()