config.py

from os import getenv

import pytz
from dotenv import load_dotenv


class SingletonMeta(type):
    """
    Singleton class for instantiate only one time the configs.
    """

    _instances = {}

    def __call__(cls, *args, **kwargs):
        if cls not in cls._instances:
            instance = super().__call__(*args, **kwargs)
            cls._instances[cls] = instance
        return cls._instances[cls]


def _verify_credentials(credentials: dict):
    return True if "" in credentials.values() else False


class Config(metaclass=SingletonMeta):
    """
    Loading .env file and other configs to be able to get it in all project.
    """

    load_dotenv()

    # Discord Bot Token
    TOKEN = getenv("TOKEN", default=None)

    BIRTHDAY_SHEET = getenv("BIRTHDAY_SHEET", default="")
    BIRTHDAY_CHANNEL = int(getenv("BIRTHDAY_CHANNEL", default=0))

    BIRTHDAY_CARGOS = getenv("BIRTHDAY_CARGO_MENTION", default=None)
    BIRTHDAY_CARGOS = BIRTHDAY_CARGOS.split(",") if BIRTHDAY_CARGOS else None

    # MERCADO TOPOGRAFICO ALLERTS
    MT_ALERTS_CHANNEL = int(getenv("MT_ALERTS_CHANNEL", default=0))
    MT_ALERTS_CARGOS = getenv("MT_ALERTS_CARGO_LIST", default=None)
    MT_ALERTS_CARGOS = (
        MT_ALERTS_CARGOS.split(",") if MT_ALERTS_CARGOS else None
    )

    MT_URL_PROD = getenv("MT_URL_PROD", default="")
    MT_URL_HOMO = getenv("MT_URL_HOMO", default="")

    # Google Service Account Access Credentials
    CREDENTIALS: dict = {
        "type": getenv("TYPE", default=""),
        "project_id": getenv("PROJECT_ID", default=""),
        "private_key_id": getenv("PRIVATE_KEY_ID", default=""),
        "private_key": getenv("PRIVATE_KEY", default=""),
        "client_email": getenv("CLIENT_EMAIL", default=""),
        "client_id": getenv("CLIENT_ID", default=""),
        "auth_uri": getenv("AUTH_URI", default=""),
        "token_uri": getenv("TOKEN_URI", default=""),
        "auth_provider_x509_cert_url": getenv(
            "AUTH_PROVIDER_x509_CERT_URL", default=""
        ),
        "client_x509_cert_url": getenv("CLIENT_x509_CERT_URL", default=""),
        "universe_domain": getenv("UNIVERSE_DOMAIN", default=""),
    }

    IS_EMPTY = _verify_credentials(CREDENTIALS)

    TIME_ZONE = pytz.timezone("America/Sao_Paulo")