"""SQLAlchemy base configuration and engine setup."""

from sqlalchemy import Engine, create_engine
from sqlalchemy.orm import DeclarativeBase, Session, sessionmaker

from portfolio_app.config import get_settings


class Base(DeclarativeBase):  # type: ignore[misc]
    """Base class for all SQLAlchemy models."""

    pass


def get_engine() -> Engine:
    """Create database engine from settings."""
    settings = get_settings()
    return create_engine(settings.database_url, echo=False)


def get_session_factory() -> sessionmaker[Session]:
    """Create session factory."""
    engine = get_engine()
    return sessionmaker(bind=engine)


def create_tables() -> None:
    """Create all tables in database."""
    engine = get_engine()
    Base.metadata.create_all(engine)