const Promise = require('bluebird');
const Mailer = require('ms-mailer');
const AMQP = require('@microfleet/transport-amqp');

const mailer = new Mailer({
  debug: Boolean,
  predefinedLimits: {
    maxConnections: Number,
    maxMessages: Number,
  },
  amqp: {
    // @microfleet/transport-amqp options
  },
  htmlToText: {
    // https://www.npmjs.com/package/html-to-text
  },
  accounts: {
    test: {
      // nodemailer smtp transport configuration
      service: 'yahoo',
      auth: {
        user: 'test@yahoo.com',
        pass: '123'
      }
    }
  }
});

// returns promise, which resolves when listeners are established
const mailerReady = mailer.connect();

Promise.props({ mailer: mailerReady, amqp: AMQP.connect() })
.then(function sendMessage(props) {
  const { amqp } = props;
  return amqp.publishAndWait('mailer.predefined', {
    account: 'test',
    email: {
      // nodemailer mail options
      // make sure not to pass streams or paths, as they can't be transferred through the wire
      // as the processing will be held on the other machine
      // in case you want to use some other services like S3, then an expansion can be coded for this module
    }
  });
})
.then(function sendMessageReponse(response) {
  // nodemailer smtp transport response
});

{
  "account": String,
  "email": {
    // nodemailer email payload
  }
}

{
  "account": {
    // nodemailer smtp transport format
  },
  "email": {
    // nodemailer email payload
  }
}