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"use strict";
var package_json = require('./../package.json');
var nodemailer = require('nodemailer');
var _ = require('underscore');
var request = require('request');
var Email = require('./email');
var SmtpapiHeaders = require('./smtpapi_headers');
var Sendgrid = function(api_user, api_key, options) {
if( !(this instanceof Sendgrid) ) {
return new Sendgrid(api_user, api_key, options);
}
var _this = this;
this.options = options || {};
this.options.port = this.options.port || 587;
var send = function() {
if ( _this.options.api === 'smtp') {
smtp.apply(this, arguments);
return true;
}
web.apply( this, arguments );
}
/*
* 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.
*/
var web = function(email, callback) {
var callback = callback || function() { };
if (email.constructor !== Email) {
email = new Email(email);
}
_sendWeb(email, callback);
};
/*
* 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 {Object} nodeMailerOptions Extra options for nodeMailer. i.e. Message-Id
* This parameter is optional.
* @param {Function} callback A function to call when the processing is done.
* This parameter is optional.
*/
var smtp = function(email, nodeMailerOptions, callback) {
// Support a callback without nodeMailerOptions
if (! callback && typeof nodeMailerOptions === "function") {
callback = nodeMailerOptions;
nodeMailerOptions = null;
}
var callback = callback || function() { };
if (email.constructor !== Email) {
email = new Email(email);
}
_sendSmtp(email, nodeMailerOptions, callback);
};
/*
* Psuedo-private methods
*/
var _sendWeb = function(email, callback) {
var req = request({
method : 'POST',
uri : "https://sendgrid.com/api/mail.send.json"
}, function(err, resp, body) {
var json;
if(err) return callback(err, null);
try {
json = JSON.parse(body);
} catch (e) {
return callback(new Error(e), null);
}
if (json.message !== 'success') {
var error = 'sendgrid error';
if (json.errors) { error = json.errors.shift(); }
return callback(new Error(error), null);
}
return callback(null, json);
});
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 && 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 {
if(!Array.isArray(value)){
reqForm.append(field, value);
}else{
value.forEach(function(each){
reqForm.append(field, each);
});
}
} catch(err) {}
}
}
}
var _sendSmtp = function(email, nodeMailerOptions, callback) {
// SMTP settings
var smtp_settings = {
host: "smtp.sendgrid.net",
port: parseInt(_this.port),
requiresAuth: true,
auth: {
user: api_user,
pass: api_key
}
}
if (smtp_settings.port == 465) {
smtp_settings['secureConnection'] = true;
}
var smtpTransport = nodemailer.createTransport(_this.SMTP, smtp_settings);
var smtpParams = email.toSmtpFormat();
if (_.isObject(nodeMailerOptions)) {
_.extend(smtpParams, nodeMailerOptions);
}
smtpTransport.sendMail(smtpParams, function(error, response) {
smtpTransport.close();
if(error) { return callback(new Error(error.message), null);}
return callback(null, {'message': 'success'});
});
}
/*
* Expose public API calls
*/
this.version = package_json.version;
this.SMTP = "SMTP";
this.Email = Email;
this.SmtpapiHeaders = SmtpapiHeaders;
this.api_user = api_user;
this.api_key = api_key;
this.web = web;
this.smtp = smtp;
this.send = send;
this.options = this.options;
this.port = this.options.port;
return this;
};
module.exports = Sendgrid;
|
