from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker
from pathlib import Path
import os

# Create database directory using a local path
BASE_DIR = Path(__file__).resolve().parent.parent
DB_DIR = BASE_DIR / "storage" / "db"
DB_DIR.mkdir(parents=True, exist_ok=True)

# Database URL
SQLALCHEMY_DATABASE_URL = f"sqlite:///{DB_DIR}/db.sqlite"

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

# Create SessionLocal class
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

# Create Base class
Base = declarative_base()

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