@botocrat/poller/index.js

Telegram server poller for Botocrat

const nullFunction = () => void 0;

module.exports = (bot, client, poll_timeout = 1000, onError = nullFunction) => {
  let offset = 0, timeout

  const processUpdates = (updates) =>
    updates.forEach(({ update_id, ...update }) => {
      offset = update_id + 1
      bot._processUpdate(update, client)
    });

  const poll = () =>
    client
      .getUpdates({ offset })
      .then(processUpdates)
      .catch(onError)
      .finally((e) =>
        timeout
          ? timeout.refresh()
          : (timeout = setTimeout(poll, poll_timeout)))

  return {
    async poll() {
      const me = bot.me= await client.getMe()
      console.log("Polling for @"+me.username+"\nWarning: Don't use 'poller' in production!\n\n")
      bot._init()
      client
        .deleteWebhook()
        .then(poll)
        .catch((err) => console.log(err))
    },
    stop: () => clearTimeout(timeout)
  }
}