app.py

import os
import logging
import asyncio
from telegram import Update
from telegram.ext import Application, CommandHandler, ContextTypes

# --- Basic Setup ---
logging.basicConfig(
    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s", level=logging.INFO
)
logger = logging.getLogger(__name__)

# --- Pre-configured Settings ---
# Your Bot Token is the ONLY thing kept in secrets for security reasons.
TOKEN = os.getenv("TELEGRAM_TOKEN")

# PRE-CONFIGURED: The public URL for your specific Space "understanding/Testtg".
WEBHOOK_URL = "https://understanding-testtg.hf.space"

# PRE-CONFIGURED: A randomly generated secret password for the webhook as you requested.
WEBHOOK_SECRET = "rAnd0mSecr3t_202508071721"

# The port Hugging Face Spaces use.
PORT = int(os.getenv("PORT", 7860))


# --- Bot Command Handler ---
async def start_command(update: Update, context: ContextTypes.DEFAULT_TYPE):
    """Sends a confirmation message that the webhook test is successful."""
    logger.info("SUCCESS: Received /start command via pre-configured webhook!")
    await update.message.reply_text("Success! The pre-configured files and webhook method are working.")


# --- Main Webhook Logic ---
async def main() -> None:
    """Sets up and runs the webhook bot."""
    if not TOKEN:
        logger.error("FATAL: TELEGRAM_TOKEN not found in Hugging Face Secrets!")
        logger.error("Please make sure you have added your bot token to the secrets.")
        return

    # Create the Application instance.
    application = Application.builder().token(TOKEN).build()
    application.add_handler(CommandHandler("start", start_command))

    # Tell Telegram's servers where to send updates.
    logger.info(f"Setting webhook for Telegram to call us at: {WEBHOOK_URL}")
    await application.bot.set_webhook(url=WEBHOOK_URL, secret_token=WEBHOOK_SECRET)

    # Start the web server to listen for incoming webhooks from Telegram.
    logger.info(f"Starting web server on port {PORT} to listen for webhooks...")
    await application.run_webhook(
        listen="0.0.0.0",
        port=PORT,
        secret_token=WEBHOOK_SECRET,
    )

if __name__ == "__main__":
    asyncio.run(main())