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/*
* Copyright 2017 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";
/* eslint require-jsdoc: "off" */
var fs = require('fs');
var GoogleAuth = require('google-auth-library');
var google = require('googleapis');
var moduleBtoa = require('btoa');
var cwd = process.cwd();
var logger = require(cwd + '/src/logger').getLogger();
function getOAuth2Client(cb) {
// Load client secrets
fs.readFile(cwd + '/configs/client_secret.json', function(err, data) {
if (err) {
return cb(err);
}
var credentials = JSON.parse(data);
var clientSecret = credentials.installed.client_secret;
var clientId = credentials.installed.client_id;
var redirectUrl = credentials.installed.redirect_uris[0];
var auth = new GoogleAuth();
var oauth2Client = new auth.OAuth2(clientId, clientSecret, redirectUrl);
// Load credentials
fs.readFile(cwd + '/configs/gmail-credentials.json', function(err, token) {
if (err) {
return cb(err);
}
oauth2Client.credentials = JSON.parse(token);
return cb(null, oauth2Client);
});
});
}
function doSendMail(auth, to, cc, subject, userbody, cb) {
var gmailClass = google.gmail('v1');
var email = '';
email += 'To:' + to + '\r\n';
if (cc !== undefined)
email += 'Cc:' + cc + '\r\n';
email += 'Subject:' + subject + '\r\n';
email += 'Content-type:text/html;charset=utf-8\r\n';
email = email + '\r\n' + userbody;
var btoa = new Buffer(email).toString('base64');
btoa = btoa.replace(/\+/g, '-').replace(/\//g, '_');
gmailClass.users.messages.send({
auth: auth,
userId: 'me',
resource: {
raw: btoa
}
}, cb);
}
function sendMail(to, cc, subject, userbody) {
if (to === undefined) {
logger.error('sendMail -- missing to');
return;
}
if (subject === undefined) {
logger.error('sendMail -- missing subject');
return;
}
if (userbody === undefined) {
logger.error('sendMail -- missing body');
return;
}
getOAuth2Client(function(err, oauth2Client) {
if (err) {
logger.error('err:', err);
} else {
doSendMail(oauth2Client, to, cc, subject, userbody,
function(err, results) {
if (err) {
logger.error('err:', err);
} else {
logger.info(results);
}
});
}
});
}
module.exports.sendMail = sendMail;
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