flask_app.py

import telebot
from flask import Flask, request, abort

# Read config from file
with open('config.ini', "r") as f:
    TOKEN = f.readline()
    SECRET = f.readline()
    URL = f.readline()

bot = telebot.TeleBot(TOKEN, threaded=False)
bot.remove_webhook()
url = URL + SECRET
bot.set_webhook(url = url)

app = Flask(__name__)

@app.route('/{}'.format(SECRET), methods=["POST"])
def telegram_webhook():
    if request.headers.get('content-type') == 'application/json':
        # json_string = request.get_data().decode('utf-8')
        json_string = request.stream.read().decode('utf-8')
        update = telebot.types.Update.de_json(json_string)
        bot.process_new_updates([update])
        return 'ok', 200
    else:
        abort(403)

@app.route('/')
def index():
    return 'Hello!'

########################
# BOT
########################
        
@bot.message_handler(commands=['start', 'help'])
def send_welcome(message):
	bot.reply_to(message, "Hello, freeloader! Send me your photo")

@bot.message_handler(commands=['test'])
def test(message):
	bot.reply_to(message, "test")

@bot.message_handler(func=lambda message: True)
def ask_photo(message):
	bot.send_message(message.chat.id, "Send me your photo, please.")

@bot.message_handler(content_types=['photo'])
def photo(message):
    fileID = message.photo[-1].file_id
    file_info = bot.get_file(fileID)
    bot.send_message(message.chat.id, f'file_path = {file_info.file_path}')

    downloaded_file = bot.download_file(file_info.file_path)
    bot.send_photo(message.chat.id, downloaded_file, caption="Povtorka!")

bot.polling()