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<?php
/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2016 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Component\Router\Rules;

\defined('JPATH_PLATFORM') or die;

use Joomla\CMS\Component\Router\RouterView;

/**
 * Rule to process URLs without a menu item
 *
 * @since  3.4
 */
class NomenuRules implements RulesInterface
{
	/**
	 * Router this rule belongs to
	 *
	 * @var RouterView
	 * @since 3.4
	 */
	protected $router;

/**
	 * Class constructor.
	 *
	 * @param   RouterView  $router  Router this rule belongs to
	 *
	 * @since   3.4
	 */
	public function __construct(RouterView $router)
	{
		$this->router = $router;
	}

/**
	 * Dummy method to fulfil the interface requirements
	 *
	 * @param   array  &$query  The query array to process
	 *
	 * @return  void
	 *
	 * @since   3.4
	 * @codeCoverageIgnore
	 */
	public function preprocess(&$query)
	{
	}

/**
	 * Parse a menu-less URL
	 *
	 * @param   array  &$segments  The URL segments to parse
	 * @param   array  &$vars      The vars that result from the segments
	 *
	 * @return  void
	 *
	 * @since   3.4
	 */
	public function parse(&$segments, &$vars)
	{
		$active = $this->router->menu->getActive();

if (!\is_object($active))
		{
			$views = $this->router->getViews();

if (isset($views[$segments[0]]))
			{
				$vars['view'] = array_shift($segments);
				$view = $views[$vars['view']];

if (isset($view->key) && isset($segments[0]))
				{
					if (\is_callable(array($this->router, 'get' . ucfirst($view->name) . 'Id')))
					{
						if ($view->parent_key && $this->router->app->input->get($view->parent_key))
						{
							$vars[$view->parent->key] = $this->router->app->input->get($view->parent_key);
							$vars[$view->parent_key] = $this->router->app->input->get($view->parent_key);
						}

if ($view->nestable)
						{
							$vars[$view->key] = 0;

while (count($segments))
							{
								$segment = array_shift($segments);
								$result  = \call_user_func_array(array($this->router, 'get' . ucfirst($view->name) . 'Id'), array($segment, $vars));

if (!$result)
								{
									array_unshift($segments, $segment);
									break;
								}

$vars[$view->key] = preg_replace('/-/', ':', $result, 1);
							}
						}
						else
						{
							$segment = array_shift($segments);
							$result  = \call_user_func_array(array($this->router, 'get' . ucfirst($view->name) . 'Id'), array($segment, $vars));

$vars[$view->key] = preg_replace('/-/', ':', $result, 1);
						}
					}
					else
					{
						$vars[$view->key] = preg_replace('/-/', ':', array_shift($segments), 1);
					}
				}
			}
		}
	}

/**
	 * Build a menu-less URL
	 *
	 * @param   array  &$query     The vars that should be converted
	 * @param   array  &$segments  The URL segments to create
	 *
	 * @return  void
	 *
	 * @since   3.4
	 */
	public function build(&$query, &$segments)
	{
		$menu_found = false;

if (isset($query['Itemid']))
		{
			$item = $this->router->menu->getItem($query['Itemid']);

if (!isset($query['option'])
				|| ($item && isset($item->query['option']) && $item->query['option'] === $query['option']))
			{
				$menu_found = true;
			}
		}

if (!$menu_found && isset($query['view']))
		{
			$views = $this->router->getViews();

if (isset($views[$query['view']]))
			{
				$view = $views[$query['view']];
				$segments[] = $query['view'];

if ($view->key && isset($query[$view->key]))
				{
					if (\is_callable(array($this->router, 'get' . ucfirst($view->name) . 'Segment')))
					{
						$result = \call_user_func_array(array($this->router, 'get' . ucfirst($view->name) . 'Segment'), array($query[$view->key], $query));

if ($view->nestable)
						{
							array_pop($result);

while (count($result))
							{
								$segments[] = str_replace(':', '-', array_pop($result));
							}
						}
						else
						{
							$segments[] = str_replace(':', '-', array_pop($result));
						}
					}
					else
					{
						$segments[] = str_replace(':', '-', $query[$view->key]);
					}

unset($query[$views[$query['view']]->key]);
				}

unset($query['view']);
			}
		}
	}
}