import logging

from sqlalchemy.ext.asyncio import AsyncSession, async_sessionmaker, create_async_engine
from sqlalchemy.orm import DeclarativeBase

from app.config import settings

logger = logging.getLogger("app.database")

logger.info("Initializing database engine: %s", settings.DATABASE_URL.split("@")[-1])  # log host only, not password

engine = create_async_engine(settings.DATABASE_URL, echo=False)
async_session = async_sessionmaker(engine, class_=AsyncSession, expire_on_commit=False)


class Base(DeclarativeBase):
    pass


async def get_db() -> AsyncSession:
    logger.debug("Opening database session")
    async with async_session() as session:
        yield session
    logger.debug("Database session closed")