bot.py

#!/usr/bin/env python

import logging
from typing import List

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

from .config import FORWARD_FROM, CHAT_ID, BOT_TOKEN

# Enable logging
logging.basicConfig(
    format="%(asctime)s - %(name)s - %(levelname)s - %(message)s", level=logging.INFO
)
# set higher logging level for httpx to avoid all GET and POST requests being logged
logging.getLogger("httpx").setLevel(logging.WARNING)

logger = logging.getLogger(__name__)


async def start(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    user = update.effective_user
    await update.message.reply_html(
        rf"Hi {user.mention_html()}! I'm Alive. :p",
        reply_markup=ForceReply(selective=True),
    )


async def forward(update: Update, context: ContextTypes.DEFAULT_TYPE) -> None:
    await update.message.forward(CHAT_ID)


def main() -> None:
    """Start the bot."""
    # Create the Application and pass it your bot's token.
    application = Application.builder().token(BOT_TOKEN).build()

    # on different commands - answer in Telegram
    application.add_handler(CommandHandler("start", start))
    application.add_handler(CommandHandler("ping", start))

    # on non command i.e message - echo the message on Telegram
    application.add_handler(MessageHandler(filters.User(user_id=FORWARD_FROM), forward))

    application.run_polling(allowed_updates=Update.ALL_TYPES)


if __name__ == "__main__":
    main()