import logging
import os
from functools import lru_cache

logger = logging.getLogger(__name__)


@lru_cache(1)
def disable_cards_check():
    if os.environ.get("DISABLE_CARDS", "").lower() in ("1", "true"):
        return True

    for env in (
        "MIFARE_APP_MASTER_KEY",
        "MIFARE_ACL_READ_BASE_KEY",
        "MIFARE_ACL_WRITE_BASE_KEY",
    ):
        if not os.getenv(env):
            logger.critical(
                f"Missing environment variable for scanner start: {env} \n Card scanner and related funcionality is disabled!"  # noqa: E501
            )
            return True
    return False


disable_cards = disable_cards_check()

if not disable_cards:
    mifare_app_master_key = os.getenv("MIFARE_APP_MASTER_KEY")
    mifare_acl_read_base_key = os.getenv("MIFARE_ACL_READ_BASE_KEY")
    mifare_acl_write_base_key = os.getenv("MIFARE_ACL_WRITE_BASE_KEY")


def verify_settings():
    important_envs = ["SECRET_KEY"]
    other_envs = ["SQLALCHEMY_DATABASE_PATH", "LOCK_PIN", "UNLOCK_PIN", "MOCK_GPIO"]
    for setting in important_envs:
        if not os.getenv(setting):
            raise ValueError(
                f"Missing critical environment variable {setting}. Stopping..."
            )
    for setting in other_envs:
        if setting not in os.environ:
            logger.warning(f"Env var {setting} not set. Continuing with defaults.")


verify_settings()
secret_key = os.getenv("SECRET_KEY")
sqlalchemy_database_path = os.getenv("SQLALCHEMY_DATABASE_PATH")
lock_pin = os.getenv("LOCK_PIN")
unlock_pin = os.getenv("UNLOCK_PIN")
mock_gpio = os.getenv("MOCK_GPIO")