"""Database session management."""

from sqlalchemy import create_engine
from sqlalchemy.orm import sessionmaker

from app.core.config import settings

# Create SQLAlchemy engine
engine = create_engine(
    str(settings.DATABASE_URL),
    pool_size=settings.DATABASE_POOL_SIZE,
    max_overflow=settings.DATABASE_MAX_OVERFLOW,
    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)


def get_db():
    """Dependency for getting database session."""
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()