<?php

/**
 * This file is part of the Kdyby (http://www.kdyby.org)
 *
 * Copyright (c) 2008, 2011 Filip Procházka ([email protected])
 *
 * @license http://www.kdyby.org/license
 */

namespace Kdyby\CMS;

use Kdyby;
use Nette;
use Nette\Application\Routers\Route;



/**
 * @author Filip Procházka <[email protected]>
 */
class NodeRouter extends Nette\Application\Routers\RouteList
{
    /**
     * @var \Kdyby\CMS\Application
     */
    private $application;

    /**
     * @var ContentRepository\PathMap
     */
    private $pathMap;

    /**
     * @var string
     */
    private $nodePath;



    /**
     * @param ContentRepository\PathMap $pathMap
     */
    public function __construct(ContentRepository\PathMap $pathMap)
    {
        parent::__construct('CmsPackage');
        $this->pathMap = $pathMap;

        $this[] = new Route('[<language [a-z]{2,3}>/][<node>][.<format>]?action=<action>', array(
            'presenter' => 'Node',
            'action' => 'default',
            'language' => array(
                Route::VALUE => NULL,
                Route::FILTER_IN => function ($lang) {
                    return in_array($lang, array('cs', 'en')) ? $lang : NULL;
                },
            ),
            'node' => array(
                Route::VALUE => NULL,
                Route::PATTERN => '.*',
                Route::FILTER_IN => callback($this, 'filterInNode'),
                Route::FILTER_OUT => callback($this, 'filterOutNode'),
            ),
            'format' => NULL,
        ));
    }



    /**
     * @internal
     * @param \Kdyby\CMS\Application $application
     */
    public function setApplication(Nette\Application\Application $application)
    {
        $this->application = $application;
    }



    /**
     * @internal
     * @param string $nodePath
     * @return int|NULL
     */
    public function filterInNode($nodePath)
    {
        if (is_numeric($nodePath)) {
            return $nodePath;
        }

        $this->nodePath = trim($nodePath, '/');
        return $this->pathMap->pathId($this->nodePath);
    }



    /**
     * @internal
     * @param string $node
     * @return null|string
     */
    public function filterOutNode($node)
    {
        if (is_object($node)) {
            /** @var \Kdyby\CMS\Sitemap\AbstractNode $node */
            return $node->getPath() ?: NULL;

        } elseif (!is_numeric($node)) {
            return $node ?: NULL;
        }

        return $this->pathMap->absolutePath($node) ?: NULL;
    }



    /**
     * @param \Nette\Http\IRequest $httpRequest
     * @return \Nette\Application\Request|NULL
     */
    public function match(Nette\Http\IRequest $httpRequest)
    {
        if (!$this->application instanceof Application) {
            return NULL;
        }

        if (!$this->application->getSite()) {
            return NULL;
        }

        /** @var Route $route */
        $route = $this[0];
        if ($appRequest = $route->match($httpRequest)) {
            $presenter = $appRequest->getPresenterName();
            $appRequest->setPresenterName($this->getModule() . $presenter);
            $params = $appRequest->getParameters();

            if (!$this->nodePath && ($nodeId = $this->pathMap->pathId(""))) {
                $params['node'] = (int)$nodeId;
            }

            $params['site'] = $this->application->getSite()->getId();
            $params['nodePath'] = $this->nodePath;
            $this->nodePath = NULL;
            $appRequest->setParameters($params);

            return $appRequest;
        }

        return NULL;
    }



    /**
     * @param \Nette\Application\Request $appRequest
     * @param \Nette\Http\Url $refUrl
     * @return NULL|string
     */
    public function constructUrl(Nette\Application\Request $appRequest, Nette\Http\Url $refUrl)
    {
        if (!$this->application instanceof Application) {
            return NULL;
        }

        if (!$this->application->getSite()) {
            return NULL;
        }

        $params = $appRequest->getParameters();
        if (isset($params['nodePath']) && (!isset($params['node']) || $params['node'] === NULL)) {
            $params['node'] = $params['nodePath'];
        }
        unset($params['site'], $params['nodePath']);
        $appRequest->setParameters($params);

        return parent::constructUrl($appRequest, $refUrl);
    }

}