settings.py

import os
from dotenv import load_dotenv, find_dotenv

# Loading .env variables
load_dotenv(find_dotenv())

TELEGRAM_TOKEN = os.getenv("TELEGRAM_TOKEN")
if TELEGRAM_TOKEN is None:
    raise Exception("Please setup the .env variable TELEGRAM_TOKEN.")

PORT = int(os.environ.get("PORT", "8443"))
HEROKU_APP_NAME = os.getenv("HEROKU_APP_NAME")

TELEGRAM_SUPPORT_CHAT_ID = os.getenv("TELEGRAM_SUPPORT_CHAT_ID")
if (
    TELEGRAM_SUPPORT_CHAT_ID is None
    or not str(TELEGRAM_SUPPORT_CHAT_ID).lstrip("-").isdigit()
):
    raise Exception(
        "You need to specify 'TELEGRAM_SUPPORT_CHAT_ID' env variable: The bot will forward all messages to this chat_id. Add this bot https://t.me/ShowJsonBot to your private chat to find its chat_id."
    )
TELEGRAM_SUPPORT_CHAT_ID = int(TELEGRAM_SUPPORT_CHAT_ID)

WELCOME_MESSAGE = os.getenv("WELCOME_MESSAGE", "👋")
REPLY_TO_THIS_MESSAGE = os.getenv("REPLY_TO_THIS_MESSAGE", "REPLY_TO_THIS")
WRONG_REPLY = os.getenv("WRONG_REPLY", "WRONG_REPLY")

FORWARD_MODE = os.getenv("FORWARD_MODE", "support_chat")
PERSONAL_ACCOUNT_CHAT_ID = os.getenv("PERSONAL_ACCOUNT_CHAT_ID")
if (
    PERSONAL_ACCOUNT_CHAT_ID is None
    or not str(PERSONAL_ACCOUNT_CHAT_ID).lstrip("-").isdigit()
):
    raise Exception("You need to specify 'PERSONAL_ACCOUNT_CHAT_ID' env variable.")
PERSONAL_ACCOUNT_CHAT_ID = int(PERSONAL_ACCOUNT_CHAT_ID)