Chuck Norris awful joke bot

cnorris.nim

import telebot, asyncdispatch, logging, options, parsetoml, strformat,
       httpclient, json
from strutils import strip, replace

var L = newConsoleLogger(fmtStr="$levelname, [$time] ")
addHandler(L)

var proxyURL{.threadvar}: string
#[
The proxy should be an http one. If you have a socks based proxy,
use a program like pproxy[1] to get an http proxy out of it:
    $ pproxy -r socks5://<socks proxy IP>:<socks proxy PORT> -vv

[1]: https://github.com/qwj/python-proxy
]#

proc updateHandler(b: Telebot, u: Update): Future[bool] {.async.} =
  if not u.message:
    return true
  let response = u.message.get
  if response.text:
    let text = "Ask for /joke and you shall receive one."  # response.text.get
    discard await b.sendMessage(response.chat.id,
                                text,
                                parseMode = "markdown",
                                disableNotification = true)

proc jokeAPI(firstname, lastname:string): Future[string] {.async.} =
  let lastnameOption = if lastname.len == 0: "" else: "&lastName={lastname}"
  let url = &"http://api.icndb.com/jokes/random?firstName={firstname}{lastnameOption}"
  let proxy = newProxy proxyURL
  var client = newAsyncHttpClient(proxy=proxy)
  debugEcho("GET: ", url)
  let response = await client.getContent(url)
  debugEcho("Respone: ", url, ": ", response)
  let responseJson = response.parseJson()
  result = if responseJson["type"].getStr == "success":
             responseJson["value"]["joke"].getStr().replace("&quot;", "\"")
           else:
             "Bot encountered some problems, please try again later."

proc commandHandler(b: Telebot, c: Command): Future[bool] {.async.} =
  let msg = await jokeAPI(c.message.fromUser.get().firstname,
                          c.message.fromUser.get().lastname.get "")
  asyncCheck b.sendMessage(c.message.chat.id,
                           msg,
                           disableNotification = true,
                           # replyToMessageId = c.message.messageId
                           )
  result = true

when isMainModule:
  let configs = parsetoml.parseFile "config.toml"

  proxyURL = configs["internet"]["proxy"].getStr ""
  let api_key = configs["credentials"]["bot_key"].getStr ""
  let bot = newTeleBot(api_key)
  if proxyURL.len != 0:
    bot.setProxy proxyURL

  bot.onUpdate(updateHandler)  # bot.onUpdate(updateHandler)
  bot.onCommand("joke", commandHandler)

  bot.poll(timeout=300)

config.toml

[internet]
proxy="http://ip:port"

[credentials]
bot_key="????"