"""
Example of running PyTelegramBotAPI serverless in Amazon AWS Lambdaю
You have to set your lambda's url as telegram webhook manually https://core.telegram.org/bots/api#setwebhook
"""

import logging

import telebot
import json
import os

API_TOKEN = os.environ['TELEGRAM_TOKEN']


logger = telebot.logger
telebot.logger.setLevel(logging.INFO)

bot = telebot.TeleBot(API_TOKEN, threaded=False)


def process_event(event):
    # Get telegram webhook json from event
    request_body_dict = json.loads(event['body'])
    # Parse updates from json
    update = telebot.types.Update.de_json(request_body_dict)
    # Run handlers and etc for updates
    bot.process_new_updates([update])


def lambda_handler(event, context):
    # Process event from aws and respond
    process_event(event)
    return {
        'statusCode': 200
    }


# Handle '/start' and '/help'
@bot.message_handler(commands=['help', 'start'])
def send_welcome(message):
    bot.reply_to(message,
                 ("Hi there, I am EchoBot.\n"
                  "I am here to echo your kind words back to you."))


# Handle all other messages
@bot.message_handler(func=lambda message: True, content_types=['text'])
def echo_message(message):
    bot.reply_to(message, message.text)