<?php

/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2009 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Form\Field;

use Joomla\CMS\Component\ComponentHelper;
use Joomla\CMS\Factory;
use Joomla\CMS\Language\LanguageHelper;

// phpcs:disable PSR1.Files.SideEffects
\defined('JPATH_PLATFORM') or die;
// phpcs:enable PSR1.Files.SideEffects

/**
 * Form Field class for the Joomla Platform.
 * Supports a list of installed application languages
 *
 * @see    \Joomla\CMS\Form\Field\ContentlanguageField for a select list of content languages.
 * @since  1.7.0
 */
class LanguageField extends ListField
{
    /**
     * The form field type.
     *
     * @var    string
     * @since  1.7.0
     */
    protected $type = 'Language';

    /**
     * Method to get the field options.
     *
     * @return  array  The field option objects.
     *
     * @since   1.7.0
     */
    protected function getOptions()
    {
        // Initialize some field attributes.
        $client = (string) $this->element['client'];

        if ($client !== 'site' && $client !== 'administrator') {
            $client = 'site';
        }

        // Make sure the languages are sorted base on locale instead of random sorting
        $languages = LanguageHelper::createLanguageList($this->value, \constant('JPATH_' . strtoupper($client)), true, true);

        if (\count($languages) > 1) {
            usort(
                $languages,
                function ($a, $b) {
                    return strcmp($a['value'], $b['value']);
                }
            );
        }

        // Merge any additional options in the XML definition.
        $options = array_merge(
            parent::getOptions(),
            $languages
        );

        // Set the default value active language
        if ($langParams = ComponentHelper::getParams('com_languages')) {
            switch ((string) $this->value) {
                case 'site':
                case 'frontend':
                case '0':
                    $this->value = $langParams->get('site', 'en-GB');
                    break;
                case 'admin':
                case 'administrator':
                case 'backend':
                case '1':
                    $this->value = $langParams->get('administrator', 'en-GB');
                    break;
                case 'active':
                case 'auto':
                    $lang = Factory::getLanguage();
                    $this->value = $lang->getTag();
                    break;
                default:
                    break;
            }
        }

        return $options;
    }
}