notify-user-signup.js

const functions = require("firebase-functions");
const got = require("got");
const _ = require("lodash");

const notifyNewSignup = functions
  .runWith({ memory: "128MB" })
  .region("europe-west1")
  .auth.user()
  .onCreate(user => {
    const email = user.email;
    const displayName = user.displayName;
    const provider = _.get(user, "providerData.0.providerId");
    const url = functions.config().slack.url;
    if (!url) {
      console.warn("You need to define the slack webhook URL");
    }
    const text = `New user signup: ${displayName} (${email}) via ${provider}`;
    return got.post(url, {
      body: JSON.stringify({
        text,
        username: "User Registration",
        icon_emoji: ":sparkles:"
      })
    });
  });

module.exports = notifyNewSignup;