cloud-functions.ts

import * as functions from 'firebase-functions';
import * as admin from 'firebase-admin';
import * as request from 'request';

admin.initializeApp();

// when a new user is registered
export const createUser = functions.firestore
  .document('users/{userId}')
  .onCreate(async (snap, _) => {
    const { firstName, lastName } = snap.data();
    const slackWebhook = 'OC_slack1';
    const message = `user ${firstName} ${lastName} just registered!`;

    try {
      await request.post(slackWebhook, { json: { text: message } });
      return res.status(200).send('slack message sent successfully');
    } catch (e) {
      return res.status(500).send('error occured whens ending slack message');
    }
  });

// when a new activity is created
export const createActivity = functions.firestore
  .document('teamActivity/{Id}')
  .onCreate(async (snap, _) => {
    const { firstName, lastName, activity, description, link, points } = snap.data();
    const slackWebhook = 'OC_slack2';
    const message = `${firstName} ${lastName} just added the activity ${activity} for ${points} points with the description "${description}." Here's the link ${link}.`;

    try {
      await request.post(slackWebhook, { json: { text: message } });
      return res.status(200).send('slack message sent successfully');
    } catch (e) {
      return res.status(500).semd('error occured whens ending slack message');
    }
  });