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

ROOT_DIR = Path(__file__).parent
load_dotenv(ROOT_DIR / '.env')

DATABASE_URL = os.environ.get('DATABASE_URL', 'postgresql://user:password@localhost:5432/membership_db')

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

Base = declarative_base()

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