from telegram import InlineKeyboardButton, InlineKeyboardMarkup, Update
from telegram.ext import ApplicationBuilder, CommandHandler, ContextTypes, Updater, CallbackQueryHandler, CallbackContext


# Function to handle button clicks (callback queries)
async def button(update: Update, context: ContextTypes.DEFAULT_TYPE):
    query = update.callback_query

    user = query.from_user

    await query.answer()  # Acknowledge the button press

    if query.data == 'register':
        try:
            keyboard = [[InlineKeyboardButton("Abmelden", callback_data='cancelRegister')]]
            reply_markup = InlineKeyboardMarkup(keyboard)
            await context.bot.send_message(user.id, "Registered", reply_markup=reply_markup)
        except Exception as e:
            await context.bot.send_message(query.message.chat_id, f"@{user.username} Leider kam es zu einem Fehler: {str(e)}")

    if query.data == 'cancelRegister':
        try:
            await context.bot.send_message(user.id, "Cancelled")
        except Exception as e:
            await context.bot.send_message(query.message.chat_id, f"@{user.username} Leider kam es zu einem Fehler: {str(e)}")

    return