var express = require('express');
var router = express.Router();
const nodemailer = require("nodemailer");
const util = require('util');

const transporter = nodemailer.createTransport({
  sendMail: true,
  name: "mail.ashutoshviramgama.com",
  host: "mail.ashutoshviramgama.com",
  port: 465,
  pool: true,
  secure: true,
  auth: {
    user: "node-mailer@ashutoshviramgama.com",
    pass: "pwd",
  },
  debug: true,
  // SES: { ses, aws },
  // dkim: {
  //   domainName: "example.com",
  //   keySelector: "2017",
  //   privateKey: "-----BEGIN PRIVATE KEY-----\nMIIEvgIBADANBg..."
  // },
  // auth: {
  //   type: 'custom',
  //   method: 'MY-CUSTOM-METHOD', // forces Nodemailer to use your custom handler
  //   user: 'username',
  //   pass: 'verysecret'
  // },
  // customAuth: {
  //   'MY-CUSTOM-METHOD': ctx => {
        // let cmd = await ctx.sendCommand(
        //   'AUTH PLAIN ' +
        //   Buffer.from(
        //     '\u0000' + ctx.auth.credentials.user + '\u0000' + ctx.auth.credentials.pass,
        //     'utf-8'
        //   ).toString('base64')
        // );

        // cmd.status
        // cmd.code
        // cmd.text
        // cmd.response

        // if(cmd.status < 200 || cmd.status >= 300){
        //   throw new Error('Failed to authenticate user: ' + cmd.text);
        // }
  //   }
  // },
  // proxy: 'socks5://socks-host:1234',
});


// enable support for socks URLs
// transporter.set('proxy_socks_module', require('socks'));

// custom proxy handler
// transporter.set('proxy_handler_myproxy', handler);
// transporter.set('proxy_handler_myproxy', (proxy, options, callback) => {
//   console.log('Proxy host=% port=%', proxy.hostname, proxy.port);
//   let socket = require('net').connect(options.port, options.host, () => {
//       callback(null, {
//           connection: socket
//       });
//   });
// });

// verify connection configuration
transporter.verify(function (error, success) {
  if (error) {
    console.log(error);
  } else {
    console.log("Server is ready to take our messages");
  }
});


router.get('/', function (req, res, next) {
  transporter.sendMail({
    from: '"AV Coding 👻" <node-mailer@dummy.com>',
    to: "ashutoshviramgama@gmail.com, dummy2@gmail.com",
    cc: "dummy@gmail.com",
    bcc: [
      "dummy@gmail.com",
      {
        name: "Ashutosh Viramgama",
        address: "dummy@gmail.com"
      }
    ],
    subject: "Hello This is Node Test Mailer from AV Coding ✔",
    headers: {
      'x-my-key': 'header value',
      'x-another-key': 'another value'
    },
    text: "Hello to AV Coding world?",
    html: `Hello AV Coding world? Embedded image: `,
    icalEvent: {
      filename: 'invitation.ics',
      method: 'request',
      content: "BEGIN:VCALENDAR\r\nPRODID:-//ACME/DesktopCalendar//EN\r\nMETHOD:REQUEST\r\n..."
    },
    attachments: [
      {   // utf-8 string as an attachment
        filename: 'text1.txt',
        content: 'hello world!'
      },
      {   // binary buffer as an attachment
        filename: 'text2.txt',
        content: new Buffer('hello world!', 'utf-8')
      },
      {   // file on disk as an attachment
        filename: 'text3.txt',
        path: 'https://picsum.photos/id/1/200/300' // stream this file
      },
      {   // filename and content type is derived from path
        href: 'https://picsum.photos/id/1/200/300'
      },
      // {   // stream as an attachment
      //   filename: 'text4.txt',
      //   content: fs.createReadStream('file.txt')
      // },
      {   // define custom content type for the attachment
        filename: 'text.bin',
        content: 'hello world!',
        contentType: 'text/plain'
      },
      {   // use URL as an attachment
        filename: 'license.txt',
        path: 'https://raw.github.com/nodemailer/nodemailer/master/LICENSE'
      },
      {   // encoded string as an attachment
        filename: 'text1.txt',
        content: 'aGVsbG8gd29ybGQh',
        encoding: 'base64'
      },
      {   // data uri as an attachment
        path: 'data:text/plain;base64,aGVsbG8gd29ybGQ='
      },
      {
        // use pregenerated MIME node
        raw: 'Content-Type: text/plain\r\n' +
          'Content-Disposition: attachment;\r\n' +
          '\r\n' +
          'Hello world!'
      },
      {
        filename: 'image.png',
        path: 'https://picsum.photos/id/1/200/300',
        cid: 'unique@nodemailer.com' //same cid value as in the html img src
      }
    ],
    alternatives: [
      {
        contentType: 'text/x-web-markdown',
        content: '**Hello AV Coding world!**'
      }
    ],
    list: {
      // List-Help: <mailto:admin@example.com?subject=help>
      help: 'node-mailer@ashutoshviramgama.com?subject=help',
      // List-Unsubscribe: <http://example.com> (Comment)
      unsubscribe: {
        url: 'https://ashutoshviramgama.com',
        comment: 'Comment'
      },
      // List-Subscribe: <mailto:admin@example.com?subject=subscribe>
      // List-Subscribe: <http://example.com> (Subscribe)
      subscribe: [
        'node-mailer@ashutoshviramgama.com?subject=subscribe',
        {
          url: 'https://ashutoshviramgama.com',
          comment: 'Subscribe'
        }
      ],
      // List-Post: <http://example.com/post>, <mailto:admin@example.com?subject=post> (Post)
      post: [
        [
          'https://ashutoshviramgama.com/post',
          {
            url: 'node-mailer@ashutoshviramgama.com?subject=post',
            comment: 'Post'
          }
        ]
      ]
    },
    dsn: {
      id: 'ThisIsFirstTimeForAVCOding_01',
      return: 'headers',
      notify: ['failure', 'delay', 'success', 'never'],
      recipient: 'node-mailer@ashutoshviramgama.com'
    },
    // envelope: {
    //   from: 'AV Coding <node-mailer@ashutoshviramgama.com>', // used as MAIL FROM: address for SMTP
    //   to: 'ashutoshviramgama@gmail.com, Mailer <ashutoshviramgama@gmail.com>' // used as RCPT TO: address for SMTP
    // },
    // raw: `From: node-mailer@ashutoshviramgama.com
    //       To: ashutoshviramgama@gmail.com
    //       Subject: AV Coding test message

    //       Hello AV Coding world!`,
  }).then(info => {
    res.status(200).send("Message sent: " + util.inspect(info, { depth: null }));
  }).catch(err => {
    console.log('Preview Error: ' + err);
    res.status(404).send("Message Error: " + util.inspect(err, { depth: null }));
  });
});

module.exports = router;

output of info

{
  accepted: [ 'ashutoshviramgama@gmail.com', 'dummy@gmail.com' ],
  rejected: [],
  ehlo: [
    'SIZE 52428800',
    '8BITMIME',
    'PIPELINING',
    'PIPECONNECT',
    'AUTH PLAIN LOGIN',
    'HELP'
  ],
  envelopeTime: 57,
  messageTime: 32,
  messageSize: 166,
  response: '250 OK id=1s0dfz-004NY8-3A',
  envelope: {
    from: 'node-mailer@ashutoshviramgama.com',
    to: [ 'ashutoshviramgama@gmail.com', 'dummy@gmail.com' ]
  },
  messageId: '<3c7ea9ee-305c-e960-7809-cfaf771a3afc@ashutoshviramgama.com>'
}

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