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

from app.config import config

DATABASE_URL = f"postgresql://{config['CGNO_ID_DB_USERNAME']}:{config['CGNO_ID_DB_PASSWORD']}@{config['CGNO_ID_DB_HOST']}/{config['CGNO_ID_DB_NAME']}"

engine = create_engine(DATABASE_URL)

session_factory = sessionmaker(bind=engine)

EntityBase = declarative_base()


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