import os from dotenv import load_dotenv load_dotenv() MONGODB_URL = os.getenv("MONGODB_URL", "mongodb://localhost:27017") DATABASE_NAME = os.getenv("DATABASE_NAME", "expense_tracker") COLLECTION_NAME = os.getenv("COLLECTION_NAME", "monthly_records") # CORS ALLOWED_ORIGINS = [o.strip() for o in os.getenv("ALLOWED_ORIGINS", "http://localhost:3000").split(",") if o.strip()] ALLOWED_ORIGIN_REGEX = os.getenv("ALLOWED_ORIGIN_REGEX") # new