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<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2010 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;

\defined('JPATH_PLATFORM') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\Language\Text;
use Joomla\Database\ParameterType;

// Import the com_menus helper.
require_once realpath(JPATH_ADMINISTRATOR . '/components/com_menus/helpers/menus.php');

/**
 * Supports an HTML select list of menus
 *
 * @since  1.6
 */
class MenuField extends GroupedlistField
{
	/**
	 * The form field type.
	 *
	 * @var    string
	 * @since  1.6
	 */
	public $type = 'Menu';

	/**
	 * Method to get the field option groups.
	 *
	 * @return  array  The field option objects as a nested array in groups.
	 *
	 * @since   1.7.0
	 * @throws  \UnexpectedValueException
	 */
	protected function getGroups()
	{
		$clientId   = (string) $this->element['clientid'];
		$accessType = (string) $this->element['accesstype'];
		$showAll    = (string) $this->element['showAll'] === 'true';

		$db    = Factory::getDbo();
		$query = $db->getQuery(true)
			->select(
				[
					$db->quoteName('id'),
					$db->quoteName('menutype', 'value'),
					$db->quoteName('title', 'text'),
					$db->quoteName('client_id'),
				]
			)
			->from($db->quoteName('#__menu_types'))
			->order(
				[
					$db->quoteName('client_id'),
					$db->quoteName('title'),
				]
			);

		if (\strlen($clientId))
		{
			$client = (int) $clientId;
			$query->where($db->quoteName('client_id') . ' = :client')
				->bind(':client', $client, ParameterType::INTEGER);
		}

		$menus = $db->setQuery($query)->loadObjectList();

		if ($accessType)
		{
			$user = Factory::getUser();

			foreach ($menus as $key => $menu)
			{
				switch ($accessType)
				{
					case 'create':
					case 'manage':
						if (!$user->authorise('core.' . $accessType, 'com_menus.menu.' . (int) $menu->id))
						{
							unset($menus[$key]);
						}
						break;

					// Editing a menu item is a bit tricky, we have to check the current menutype for core.edit and all others for core.create
					case 'edit':
						$check = $this->value == $menu->value ? 'edit' : 'create';

						if (!$user->authorise('core.' . $check, 'com_menus.menu.' . (int) $menu->id))
						{
							unset($menus[$key]);
						}
						break;
				}
			}
		}

		$opts = array();

		// Protected menutypes can be shown if requested
		if ($clientId == 1 && $showAll)
		{
			$opts[] = (object) array(
				'value'     => 'main',
				'text'      => Text::_('COM_MENUS_MENU_TYPE_PROTECTED_MAIN_LABEL'),
				'client_id' => 1,
			);
		}

		$options = array_merge($opts, $menus);
		$groups  = array();

		if (\strlen($clientId))
		{
			$groups[0] = $options;
		}
		else
		{
			foreach ($options as $option)
			{
				// If client id is not specified we group the items.
				$label = ($option->client_id == 1 ? Text::_('JADMINISTRATOR') : Text::_('JSITE'));

				$groups[$label][] = $option;
			}
		}

		// Merge any additional options in the XML definition.
		return array_merge(parent::getGroups(), $groups);
	}
}