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index.js
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index.js
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/**
* 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';
// [START all]
// [START import]
const functions = require('firebase-functions');
const admin = require('firebase-admin');
admin.initializeApp(functions.config().firebase);
// [END import]
// [START addMessage]
// Take the text parameter passed to this HTTP endpoint and insert it into the
// Realtime Database under the path /messages/:pushId/original
// [START addMessageTrigger]
exports.addMessage = functions.https.onRequest((req, res) => {
// [END addMessageTrigger]
// Grab the text parameter.
const original = req.query.text;
// Push it into the Realtime Database then send a response
admin.database().ref('/messages').push({original: original}).then(snapshot => {
// Redirect with 303 SEE OTHER to the URL of the pushed object in the Firebase console.
res.redirect(303, snapshot.ref);
});
});
// [END addMessage]
// [START makeUppercase]
// Listens for new messages added to /messages/:pushId/original and creates an
// uppercase version of the message to /messages/:pushId/uppercase
// [START makeUppercaseTrigger]
exports.makeUppercase = functions.database.ref('/messages/{pushId}/original')
.onWrite(event => {
// [END makeUppercaseTrigger]
// [START makeUppercaseBody]
// Grab the current value of what was written to the Realtime Database.
const original = event.data.val();
console.log('Uppercasing', event.params.pushId, original);
const uppercase = original.toUpperCase();
// You must return a Promise when performing asynchronous tasks inside a Functions such as
// writing to the Firebase Realtime Database.
// Setting an "uppercase" sibling in the Realtime Database returns a Promise.
return event.data.ref.parent.child('uppercase').set(uppercase);
// [END makeUppercaseBody]
});
// [END makeUppercase]
// [END all]