start.py

import os
import dotenv
import logging
import signal
from Secret import Secret

from telegram import Update
from telegram.ext import (
    CommandHandler,
    MessageHandler,
    filters,
    Application,
    ContextTypes,
)

dotenv.load_dotenv()

# Enable logging
logging.basicConfig(
    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s", level=logging.INFO
)

logging.getLogger("httpx").setLevel(logging.WARNING)


# Define the start command handler
async def start(update: Update, context: ContextTypes.DEFAULT_TYPE):
    chat_id = update.message.chat_id
    await context.bot.send_message(
        chat_id=chat_id,
        text=f"Your chat ID has been saved. You can now start using the store. Your chat ID is: <code>{chat_id}</code>",
        parse_mode="HTML",
    )

    secret = Secret()
    secret["chat_id"] = chat_id

    os.kill(os.getpid(), signal.SIGINT)


async def echo(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    await update.message.reply_text("Unknown command. Please use /start to begin.")


def main() -> None:
    """Start the bot."""
    application = Application.builder().token(Secret()["token"]).build()

    application.add_handler(CommandHandler("start", start))

    application.add_handler(MessageHandler(filters.TEXT & ~filters.COMMAND, echo))

    application.run_polling()


if __name__ == "__main__":
    main()