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<?php
/**
 * @package     Joomla.API
 * @subpackage  com_categories
 *
 * @copyright   (C) 2019 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\Component\Categories\Api\Controller;

\defined('_JEXEC') or die;

use Joomla\CMS\MVC\Controller\ApiController;

/**
 * The categories controller
 *
 * @since  4.0.0
 */
class CategoriesController extends ApiController
{
	/**
	 * The content type of the item.
	 *
	 * @var    string
	 * @since  4.0.0
	 */
	protected $contentType = 'categories';

/**
	 * The default view for the display method.
	 *
	 * @var    string
	 * @since  3.0
	 */
	protected $default_view = 'categories';

/**
	 * Method to allow extended classes to manipulate the data to be saved for an extension.
	 *
	 * @param   array  $data  An array of input data.
	 *
	 * @return  array
	 *
	 * @since   4.0.0
	 */
	protected function preprocessSaveData(array $data): array
	{
		$extension = $this->getExtensionFromInput();
		$data['extension'] = $extension;

// TODO: This is a hack to drop the extension into the global input object - to satisfy how state is built
		//       we should be able to improve this in the future
		$this->input->set('extension', $extension);

return $data;
	}

/**
	 * Basic display of an item view
	 *
	 * @param   integer  $id  The primary key to display. Leave empty if you want to retrieve data from the request
	 *
	 * @return  static  A \JControllerLegacy object to support chaining.
	 *
	 * @since   4.0.0
	 */
	public function displayItem($id = null)
	{
		$this->modelState->set('filter.extension', $this->getExtensionFromInput());

return parent::displayItem($id);
	}
	/**
	 * Basic display of a list view
	 *
	 * @return  static  A \JControllerLegacy object to support chaining.
	 *
	 * @since   4.0.0
	 */
	public function displayList()
	{
		$this->modelState->set('filter.extension', $this->getExtensionFromInput());

return parent::displayList();
	}

/**
	 * Get extension from input
	 *
	 * @return string
	 *
	 * @since 4.0.0
	 */
	private function getExtensionFromInput()
	{
		return $this->input->exists('extension') ?
			$this->input->get('extension') : $this->input->post->get('extension');
	}
}