import os
import logging
logger = logging.getLogger(__name__)

def verify_settings():
    card_envs = [ 
        "MIFARE_APP_MASTER_KEY",
        "MIFARE_ACL_READ_BASE_KEY",
        "MIFARE_ACL_WRITE_BASE_KEY",
    ]
    important_envs = [
        "SECRET_KEY"
    ]
    other_envs = [
        "SQLALCHEMY_DATABASE_URL"
    ]
    for setting in card_envs:
        if (setting not in os.environ or setting == "") and not os.getenv("DISABLE_CARDS"):
            raise ValueError(f"Missing environment variable for scanner start: {setting} \n Run with DISABLE_CARDS env var to disable cards")
    for setting in important_envs:
        if setting not in os.environ or setting == "":
            raise ValueError(f'Missing critical environment variable {setting}. Stopping...')
    for setting in other_envs:
        if setting not in os.environ:
            logger.critical(f'Env var {setting} not set. Continuing with defaults.')