var nodemailer = require('nodemailer');
var settings = require('./settings.js');
var logger = require('./logger.js');
var path = require('path');

/**
 * Módulo para el envío de emails
 */
module.exports = {
    transporter: null,

    /**
     * Si todavía no está inicializada la configuración,
     * carga el fichero de configuración.
     */
    init: function() {
        this.transporter = nodemailer.createTransport(settings.smtp());

        this.transporter.verify(function(error, success) {
            if (error) {
                logger.print(__LOG_ERROR, error);
            } else {
                logger.print(__LOG_INFO, 'Conexión SMTP establecida');
            }
        });
    },

    /**
     * Envia un email con los datos recibidos desde un vector.
     * @param {Object} data - Datos para el envío del email
     */
    send: function(data) {
        var filePath = 'Template/images/';
        let mailOptions = {
            from: '"' + settings.app().senderName + '" <' + settings.app().senderMail + '>',
            to: data.recipient,
            subject: data.subject,
            html: data.body,
            attachments: [
                {filename: 'header.png', path: path.join(__dirname, filePath, 'header.png'), cid: 'header'},
                {filename: 'arrow.png', path: path.join(__dirname, filePath, 'arrow.png'), cid: 'arrow'},
                {filename: 'chat.png', path: path.join(__dirname, filePath, 'chat.png'), cid: 'chat'},
                {filename: 'facebook.png', path: path.join(__dirname, filePath, 'facebook.png'), cid: 'facebook'},
                {filename: 'twitter.png', path: path.join(__dirname, filePath, 'twitter.png'), cid: 'twitter'},
                {filename: 'youtube.png', path: path.join(__dirname, filePath, 'youtube.png'), cid: 'youtube'},
                {filename: 'pinterest.png', path: path.join(__dirname, filePath, 'pinterest.png'), cid: 'pinterest'},
                {filename: 'instagram.png', path: path.join(__dirname, filePath, 'instagram.png'), cid: 'instagram'},
                {filename: 'linkedin.png', path: path.join(__dirname, filePath, 'linkedin.png'), cid: 'linkedin'}
            ]
        };

        this.transporter.sendMail(mailOptions, (error, info) => {
            if (error) {
                logger.print(__LOG_ERROR, error);
            } else if (settings.app().debug) {
                logger.print(__LOG_INFO, 'Se ha enviado el email ' + info.messageId + ' [' + info.response + ']');

                return true;
            }
        });
    }
};