rocketchat-webhook

RocketChat webhook

1. Run yarn init -y and yarn add micro
2. Log into Rocket.Chat, go to the Administration Panel, and choose Integrations
3. Select "New Integration", and then "Outgoing Webhook"
4. Select "Message Sent" for the Event Trigger
5. Set "Enabled" to true and give it a name (like "testing123")
6. Enter a channel name ("#general") and a trigger word (like "testing123")
7. Enter a URL, which is the server you'll deploy to and a path: Example: https://rocketchat-testing123.now.sh/
8. Several fields down is the Token. It will contain an automatically generated one. Copy that and set it as the WEBHOOK_TOKEN environment variable:

   export WEBHOOK_TOKEN=oWgqqKpcFC6vSzkCMipBAETF

9. Click Save Changes. Deploy the app or expose it via ngrok and run it:

   # https://zeit.co/now deployment
   now -e WEBHOOK_TOKEN=$WEBHOOK_TOKEN
   export DEPLOYMENT_URL=$(pbpaste)
   now alias $DEPLOYMENT_URL rocketchat-testing123.now.sh
   
   # for ngrok, open a new console tab and run ngrok
   # When ngrok provides the URL, copy and paste the URL and update the
   # webhook in the RocketChat admin
   ngrok http 3000
   
   # And the original tab run the micro server
   yarn start

10. Go to the channel and send a message starting with the trigger text.

const {json, send} = require('micro')

if (! process.env.WEBHOOK_TOKEN) {
  throw new Error('The WEBHOOK_TOKEN environment variable must be set.')
}

module.exports = async (req, res) => {
  const data = await json(req)
  if (data.token !== process.env.WEBHOOK_TOKEN) {
    return send(res, 401, { error: 'Invalid Token' })
  }
  const message = data.text.replace(data.trigger_word, '').trimLeft()
  return { text: `You said: ${message}` }
}