<?php
/*
* @package		Tech Fry Library
* @license		https://www.gnu.org/licenses/gpl-3.0.en.html
*/

namespace TechFry\Library\View\Sd;

defined('_JEXEC') or die;

use Joomla\CMS\Uri\Uri;

// https://developers.google.com/search/docs/appearance/structured-data/course-info
class SdCourse
{
    public static function get_output($data = array())
    {
        $uri = Uri::getInstance();

        $description = $data['description'] ?? $data['introtext'];
        
        $json = array(
            "@context" => "https://schema.org",
            "@type" => "Course",
            "name" => $data['title'] ?? $data['name'],
            "description" => strip_tags($description),
        );

        $author = $data['author_name'] ?? $data['provider'] ?? '';
        $json['provider'] = array(
            "@type" => "Organization",
            "name" => $author,
        );

        // Free, Partially Free, Subscription, Paid
        $offer = $data['offer'] ?? $data['offer_category'] ?? '';
        if ($offer)
        {
            $json['offers'] = array(
                "@type" => "Offer",
                "category" => $offer,
                "priceCurrency" => $data['currency'] ?? '',
                "price" => $data['price'] ?? '',
            );
        }

        // $data['mode']: Online, Onsite, Blended
        // $data['workload']: total time (8601 duration format)
        if (isset($data['workload']) && isset($data['mode']))
        {
            $json['hasCourseInstance'] = array(
                "@type" => "CourseInstance",
                "courseMode" => $data['mode'],
                "courseWorkload" => $data['workload'],
            );
        }

        // $data['level']: Beginner, Intermediate, Advanced
        if (isset($data['level']) && $data['level'])
        {
            $json['educationalLevel'] = $data['level'];
        }

        // Description - Recommended length: 240 characters, Maximum length: 500 characters

        Sd::display_sd($json);
    }
}