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57 lines
2.3 KiB
57 lines
2.3 KiB
/**
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* Copyright 2015 Google Inc. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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'use strict';
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const functions = require('firebase-functions');
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const nodemailer = require('nodemailer');
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// Configure the email transport using the default SMTP transport and a GMail account.
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// For other types of transports such as Sendgrid see https://nodemailer.com/transports/
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// TODO: Configure the `gmail.email` and `gmail.password` Google Cloud environment variables.
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const gmailEmail = encodeURIComponent(functions.config().gmail.email);
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const gmailPassword = encodeURIComponent(functions.config().gmail.password);
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const mailTransport = nodemailer.createTransport(
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`smtps://${gmailEmail}:${gmailPassword}@smtp.gmail.com`);
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// Sends an email confirmation when a user changes his mailing list subscription.
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exports.sendEmailConfirmation = functions.database.ref('/users/{uid}').onWrite(event => {
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const snapshot = event.data;
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const val = snapshot.val();
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if (!snapshot.changed('subscribedToMailingList')) {
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return;
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}
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const mailOptions = {
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from: '"Spammy Corp." <noreply@firebase.com>',
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to: val.email
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};
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// The user just subscribed to our newsletter.
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if (val.subscribedToMailingList) {
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mailOptions.subject = 'Thanks and Welcome!';
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mailOptions.text = 'Thanks you for subscribing to our newsletter. You will receive our next weekly newsletter.';
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return mailTransport.sendMail(mailOptions).then(() => {
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console.log('New subscription confirmation email sent to:', val.email);
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});
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}
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// The user unsubscribed to the newsletter.
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mailOptions.subject = 'Sad to see you go :`(';
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mailOptions.text = 'I hereby confirm that I will stop sending you the newsletter.';
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return mailTransport.sendMail(mailOptions).then(() => {
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console.log('New unsubscription confirmation email sent to:', val.email);
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});
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});
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