const nodemailer = require ('nodemailer');

module.exports = {
  validateEmailFromAlexaResponse: function (email) {
    //email from alexa response will contain words instead of symbols, like :
    //at = @
    //underscore = _
    //dash = -
    //dot = .
    //TODO: This list should be longer
    let transformedEmail = email
      .replace (/at/gi, '@')
      .replace (/underscore/gi, '_')
      .replace (/dash/gi, '-')
      .replace (/dot/gi, '.');

    //Validate here with some email validation regex

    //return true if email is valid
    return true;
  },

  sendEmal: function (name, fromEmail, message, toEmail) {
    return new Promise ((resolve, reject) => {
      let messageBody =
        'Hello. User ' +
        name +
        ' left you a message on Saburly service using Alexa. Content of the message : ' +
        message;

      let transporter = nodemailer.createTransport ({
        host: 'smtp.yandex.com',
        port: 465,
        secure: true,
        auth: {
          user: 'saburly@yandex.com',
          pass: 'WeAreSaburlyTeam',
        },
      });

      var mailOptions = {
        from: fromEmail,
        replyTo: fromEmail,
        to: toEmail,
        subject: 'Message from Saburly service',
        text: messageBody,
      };

      transporter.sendMail (mailOptions, (error, info) => {
        if (error) {
          reject (error);
        } else {
          resolve (info);
        }
      });
    });
  },
};