<?php
use Proxim\Application;
use Proxim\Configuration;
use Proxim\Module\Module;
use Proxim\Util\ArrayUtils;
use SendGrid\Mail\Attachment;

require_once dirname(__FILE__) . '/vendor/autoload.php';

class SendGridMailer extends Module
{
    const SENDGRID_ENABLED = 'SENDGRID_ENABLED';
    const SENDGRID_API_KEY = 'SENDGRID_API_KEY';

    public function __construct()
    {
        $this->name = 'sendgridmailer';
        $this->icon = 'fa fa-envelope';
        $this->version = '1.0.0';
        $this->prox_versions_compliancy = array('min' => '1.0.0', 'max' => Application::VERSION);
        $this->author = 'Davison Pro';

        $this->bootstrap = true;
        parent::__construct();

        $this->displayName = 'SendGrid';
        $this->description = 'Send Email Newsletters, Password Resets, Promotional Emails, Shipping Notifications With Confidence';
    }

    public function install()
    {
        if (!parent::install()) {
            return false;
        }

        $this->registerHook([
            'actionEmailSendBefore',
            'actionMailAlterMessageBeforeSend'
        ]);
    }

    public function hookActionMailAlterMessageBeforeSend($payload) {
        if(!Configuration::get(self::SENDGRID_ENABLED)) {
            return true;
        }

        $message = ArrayUtils::get($payload, 'message');
        $fileAttachment = ArrayUtils::get($payload, 'fileAttachment');
        $htmlMessage = ArrayUtils::get($payload, 'htmlMessage');

        $email = new \SendGrid\Mail\Mail();
        $from = $message->getFrom();
        $to = $message->getTo();

        if (is_array($from)) {
            foreach ($from as $addr => $addrName) {
                $addr = trim($addr);
                $email->setFrom($addr, $addrName);
            }
        }

        if (is_array($to)) {
            foreach ($to as $addr => $addrName) {
                $addr = trim($addr);
                $email->addTo($addr, $addrName);
            }
        }

        $email->setSubject( $message->getSubject() );
        $email->addContent(
            "text/html", $htmlMessage
        );

        if ($fileAttachment && !empty($fileAttachment)) {
            // Multiple attachments?
            if (!is_array(current($fileAttachment))) {
                $fileAttachment = array($fileAttachment);
            }

            foreach ($fileAttachment as $attachment) {
                if (isset($attachment['content']) && isset($attachment['name']) && isset($attachment['mime'])) {
                    $att = new Attachment();
                    $att->setContent( $attachment['content'] );
                    $att->setType( $attachment['mime'] );
                    $att->setFilename( $attachment['name'] );
                    $att->setDisposition("attachment");
                    $email->addAttachment( $att );
                }
            }
        }

        try {
            $sendgrid = new SendGrid( Configuration::get(self::SENDGRID_API_KEY, PROX_ADMIN_SITE_ID) );
            $res = $sendgrid->send($email);
        } catch (Exception $e) {
        }

        return false;
    }
}