const nodemailer = require("nodemailer");
const mailValidator = require("email-validator");

var app = null


exports.init = function(express) {
  app = express

	return this;
}

exports.mail = function(data) {
  const account = {
    user: app.get('CONF').mail.smtp.auth.user,
    pass: app.get('CONF').mail.smtp.auth.pass
  }
  
  let transporter = nodemailer.createTransport({
    host: app.get('CONF').mail.smtp.host,
    port: app.get('CONF').mail.smtp.port,
    secure: app.get('CONF').mail.smtp.secure, // true for 465, false for other ports
    auth: {
      user: account.user, // generated ethereal user
      pass: account.pass // generated ethereal password
    }
  });
  
  // setup email data with unicode symbols
  let mailOptions = {
    from: extractFrom(data),                     // sender address
    to: app.get('CONF').mail.request.to,         // comma separated list of receivers
    subject: "Equipment Anfrage: " + data.title, // Subject line
    text: JSON.stringify(data),                  // plain text body
    html: JSON.stringify(data)                   // html body
  };
  
  let info = transporter.sendMail(mailOptions)

  app.get('LOG').log("Mailer | Message sent: %s", info.messageId);
  
  return info
}

function extractFrom(data) {
  if(mailValidator.validate(data.contact)) {
    var name = data.name && data.name.length > 0 ? data.name : "👻"
    var mail = data.contact
    return `"${name}" ${mail}`
  } else {
    return `"👻" ${app.get('CONF').mail.from}`
  }
}