import logging
from pathlib import Path

from sqlalchemy import create_engine
from sqlalchemy.exc import OperationalError
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker

logger = logging.getLogger(__name__)

SQLALCHEMY_DATABASE_URL = "sqlite:///./data/timmy_calm.db"

# Ensure the data directory exists before creating the engine
Path("./data").mkdir(parents=True, exist_ok=True)

engine = create_engine(SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False})

SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

Base = declarative_base()


def create_tables():
    """Create all tables idempotently (safe under pytest-xdist concurrency)."""
    try:
        Base.metadata.create_all(bind=engine)
    except OperationalError as exc:
        logger.debug("Table creation skipped (already exists): %s", exc)


def get_db():
    db = SessionLocal()
    try:
        yield db
    finally:
        db.close()