import asyncdispatch, strformat, strutils, times, telebot

proc daysUntilCongressCommand* (bot: Telebot, command: Command): Future[bool] {.async.} =
  let difference = parse("2020-12-26", "yyyy-MM-dd") - now()
  let days       = difference.inDays()
  let answer     = fmt"{days}"

  discard await bot.sendMessage(command.message.chat.id, answer, replyToMessageId = command.message.messageId)