index.js

/**
 * Copyright 2016 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
'use strict';

const functions = require('firebase-functions');
const request = require('request-promise');

// This is the URL that we will callback and send the content of the updated data node.
// As an example we're using a Request Bin from http://requestb.in
// TODO: Make sure you create your own Request Bin and change this URL to try this sample.
const WEBHOOK_URL = 'http://requestb.in/1mqw97l1';

// Reads the content of the node that triggered the function and sends it to the registered Webhook
// URL.
exports.webhook = functions.database.ref('/hooks/{hookId}').onCreate((snap) => {
  return request({
    uri: WEBHOOK_URL,
    method: 'POST',
    json: true,
    body: snap.val(),
    resolveWithFullResponse: true,
  }).then((response) => {
    if (response.statusCode >= 400) {
      throw new Error(`HTTP Error: ${response.statusCode}`);
    }
    console.log('SUCCESS! Posted', snap.ref);
    return null;
  });
});