<?php
/**
 * @package     OpenCart
 * @author      Daniel Kerr
 * @copyright   Copyright (c) 2005 - 2017, OpenCart, Ltd. (https://www.opencart.com/)
 * @license     https://opensource.org/licenses/GPL-3.0
 * @link        https://www.opencart.com
*/

/**
* Mail class
*/
include_once(DIR_SYSTEM . 'library/shared/phpmailer/PHPMailerAutoload.php');

class Mail {
    protected $to;
    protected $from;
    protected $sender;
    protected $reply_to;
    protected $cc;
    protected $bcc;
    protected $emailtemplate;
    protected $subject;
    protected $text;
    protected $html;
    protected $attachments = array();
    public $parameter;

    /**
     * Constructor
     *
     * @param   string  $adaptor
     *
    */
    public function __construct($adaptor = 'mail') {
        $class = 'Mail\\' . $adaptor;

        if (class_exists($class)) {
            $this->adaptor = new $class();
        } else {
            trigger_error('Error: Could not load mail adaptor ' . $adaptor . '!');
            exit();
        }
    }

    /**
     *
     *
     * @param   mixed   $to
     */
    public function setTo($to) {
        $this->to = $to;
    }

    /**
     *
     *
     * @param   string  $from
     */
    public function setFrom($from) {
        $this->from = $from;
    }

    /**
     *
     *
     * @param   string  $sender
     */
    public function setSender($sender) {
        $this->sender = $sender;
    }

    /**
     *
     *
     * @param   string  $reply_to
     */
    public function setReplyTo($reply_to) {
        $this->reply_to = $reply_to;
    }

    /**
     *
     *
     * @param   string  $subject
     */
    public function setSubject($subject) {
        $this->subject = $subject;
    }

    /**
     *
     *
     * @param   string  $text
     */
    public function setText($text) {
        $this->text = $text;
    }

    /**
     *
     *
     * @param   string  $html
     */
    public function setHtml($html) {
        $this->html = $html;
    }

    /**
     *
     *
     * @param   string  $filename
     */
    public function addAttachment($filename) {
        $this->attachments[] = $filename;
    }

    /**
     *
     *
     */
    public function getSubject() {
        return $this->subject;
    }

    public function setCc($address) {
        $this->cc = $address;
    }

    public function setBcc($address) {
        $this->bcc = $address;
    }

    public function setEmailTemplate(EmailTemplate $oEmail) {
        $this->emailtemplate = $oEmail;
    }

    public function _sendPhpMailer() {
        if (property_exists($this, 'mail_queue') && $this->mail_queue) {
            return true; // send later via cron
        }

        if (!$this->to) {
            trigger_error('Error: E-Mail to required!');
            exit();
        }

        if (!$this->from) {
            trigger_error('Error: E-Mail from required!');
            exit();
        }

        if (!$this->sender) {
            trigger_error('Error: E-Mail sender required!');
            exit();
        }

        if (!$this->subject) {
            trigger_error('Error: E-Mail subject required!');
            exit();
        }

        if ((!$this->text) && (!$this->html)) {
            trigger_error('Error: E-Mail message required!');
            exit();
        }

        $debugMode = false;

        $mail  = new PHPMailer($debugMode);

        $mail->CharSet = "UTF-8";

        $mail->Subject = $this->subject;

        if (is_array($this->to)) {
            foreach ($this->to as $to){
                $mail->AddAddress($to);
            }
        } else {
            $mail->AddAddress($this->to);
        }

        $mail->AddReplyTo($this->from, $this->sender);

        if(!empty($this->reply_to)){
            $mail->AddReplyTo($this->reply_to, $this->sender);
        } elseif(!empty($this->replyto)){
            $mail->AddReplyTo($this->replyto, $this->sender); # OC 2.0.2.0
        } else {
            $mail->AddReplyTo($this->from, $this->sender);
        }

        if($this->cc){
            $mail->AddCC($this->cc);
        }

        if($this->bcc){
            $mail->AddBCC($this->bcc);
        }

        if (!$this->html) {
            $mail->Body = $this->text;
        } else {
            $mail->MsgHTML($this->html);
            if ($this->text) {
                $mail->AltBody = $this->text;
            }
        }

        if($this->attachments){
            foreach ($this->attachments as $attachment) {
                if (file_exists($attachment)) {
                    $mail->AddAttachment($attachment);
                }
            }
        }

        if ($this->protocol == 'smtp') {
            $mail->SetFrom(html_entity_decode($this->smtp_username, ENT_QUOTES, 'UTF-8'), $this->sender);

            $mail->IsSMTP();
            $mail->Host = $this->smtp_hostname;
            $mail->Port = $this->smtp_port;
            $mail->SMTPDebug = ($debugMode) ? 1 : 0;
            if($this->smtp_port == '587'){
                $mail->SMTPAuth = true;
                $mail->SMTPSecure = "tls";
            } elseif ($this->smtp_port == '465') {
                $mail->SMTPAuth = true;
                $mail->SMTPSecure = "ssl";
            }
            if (!empty($this->smtp_username)  && !empty($this->smtp_password)) {
                $mail->SMTPAuth = true;
                $mail->Username = html_entity_decode($this->smtp_username, ENT_QUOTES, 'UTF-8');
                $mail->Password = html_entity_decode($this->smtp_password, ENT_QUOTES, 'UTF-8');
            }

            $mail->SMTPOptions = array(
                'ssl' => array(
                    'verify_peer' => false,
                    'verify_peer_name' => false,
                    'allow_self_signed' => true
                )
            );
        }

        if($debugMode){
            try {
                $mail->Send();
            } catch(phpmailerException $e) {
                trigger_error(strip_tags($e->errorMessage()));
            } catch(Exception $e) {
                trigger_error(strip_tags($e->getMessage()));
            }
        } else {
            $mail->Send();
        }
    }

    public function send() {
        $this->_sendPhpMailer();
    }

    public function _send() {
        $this->_sendPhpMailer();

        if ($this->emailtemplate) {
            $data = get_object_vars($this);

            $this->emailtemplate->sent($data);
        }
    }

    private function _send() {
        if (!$this->to) {
            throw new \Exception('Error: E-Mail to required!');
        }

        if (!$this->from) {
            throw new \Exception('Error: E-Mail from required!');
        }

        if (!$this->sender) {
            throw new \Exception('Error: E-Mail sender required!');
        }

        if (!$this->subject) {
            throw new \Exception('Error: E-Mail subject required!');
        }

        if ((!$this->text) && (!$this->html)) {
            throw new \Exception('Error: E-Mail message required!');
        }

        foreach (get_object_vars($this) as $key => $value) {
            $this->adaptor->$key = $value;
        }

        $this->adaptor->send();
    }
}