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"use strict";
var package_json = require('./../package.json');
var nodemailer = require('nodemailer');
var request = require('request');
var Email = require('./email');
/*
* Class for handling communications with SendGrid.
*
* @param {String} api_user The SendGrid username.
* @param {String} api_key The key credentials for SendGrid.
*/
function SendGrid(api_user, api_key) {
this.api_user = api_user;
this.api_key = api_key;
this.version = package_json.version;
this.SMTP = "SMTP";
if (process.env.NODE_ENV == "test") {
this.SMTP = "STUB";
}
}
/*
* Sends an email via web. See .web method for more details.
*
*/
SendGrid.prototype.send = function(email, callback) {
this.web(email, callback);
}
/*
* Sends an email via web and returns true if the
* message was sent successfully.
*
* @param {Email|Object} email An email object or a hash that has
* the values for the email to be sent.
* @param {Function} callback A function to call when the processing is done.
* This parameter is optional.
*/
SendGrid.prototype.web = function(email, callback) {
var api_user = this.api_user;
var api_key = this.api_key;
var self = this
, cb = callback || function() { };
if (email.constructor !== Email) {
email = new Email(email);
}
function send_web() {
var req = request({
method : 'POST',
uri : "https://sendgrid.com/api/mail.send.json"
}, function(err, resp, body) {
if (err) {
return cb(false, err);
} else {
try {
var json = JSON.parse(body);
return cb(json.message == 'success', json.errors);
} catch (err) {
cb(false, "Invalid JSON response from server");
}
}
});
var form = email.toWebFormat();
form['api_user'] = api_user;
form['api_key'] = api_key;
var reqForm = req.form();
for (var field in form) {
var value = form[field];
if (value.filename) {
if (value.cid) {
reqForm.append("content["+value.filename+"]", value.cid);
}
reqForm.append("files["+value.filename+"]", value.content, {filename: value.filename, contentType: value.contentType});
} else {
try {
reqForm.append(field, value);
} catch(err) {}
}
}
}
if (email.hasFiles()) {
email.processFiles(function(success, message) {
if (success) {
send_web();
} else {
cb(false, message);
}
});
} else {
send_web();
}
};
/*
* Sends an email via SMTP and returns true if the
* message was sent successfully.
*
* @param {Email|Object} email An email object or a hash that has
* the values for the email to be sent.
* @param {Function} callback A function to call when the processing is done.
* This parameter is optional.
*/
SendGrid.prototype.smtp = function(email, callback) {
var self = this
, smtpTransport
, cb = callback || function() { };
// SMTP settings
smtpTransport = nodemailer.createTransport(this.SMTP, {
service: 'SendGrid',
auth: {
user: this.api_user,
pass: this.api_key
}
});
function send_smtp() {
smtpTransport.sendMail(email.toSmtpFormat(), function(error, response) {
smtpTransport.close();
if(error) {
return cb(false, error.data);
}
return cb(true, response);
});
}
if (email.constructor !== Email) {
email = new Email(email);
}
send_smtp();
};
module.exports = SendGrid;
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