<?php

/*
 * This file is part of Phraseanet
 *
 * (c) 2005-2010 Alchemy
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

/**
 *
 * @package
 * @license     http://opensource.org/licenses/gpl-3.0 GPLv3
 * @link        www.phraseanet.com
 */
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\HttpKernel\Exception\HttpException;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Silex\Application;
use Silex\ControllerProviderInterface;
use Silex\ControllerCollection;

class Controller_RSSFeeds implements ControllerProviderInterface
{

  public function connect(Application $app)
  {
    $appbox = appbox::get_instance();

    $controllers = new ControllerCollection();

    $display_feed = function($feed, $format, $page, $user = null)
            {
              $total = $feed->get_count_total_entries();
              $perPage = 5;
              $entries = $feed->get_entries((($page - 1) * $perPage), $perPage);

              $registry = registry::get_instance();

              if ($format == Feed_Adapter::FORMAT_RSS)
              {
                $content = new Feed_XML_RSS();
              }
              
              if ($format == Feed_Adapter::FORMAT_ATOM)
              {
                $content = new Feed_XML_Atom();
              }
              
              if($format == Feed_Adapter::FORMAT_COOLIRIS)
              {
                $content = new Feed_XML_Cooliris();
              }
              
              if ($user instanceof User_Adapter)
                $link = $feed->get_user_link($registry, $user, $format, $page);
              else
                $link = $feed->get_homepage_link($registry, $format, $page);

              $content->set_updated_on(new DateTime());
              $content->set_title($feed->get_title());
              $content->set_subtitle($feed->get_subtitle());
              $content->set_generator('Phraseanet');
              $content->set_link($link);

              if ($user instanceof User_Adapter)
              {
                if ($page > 1)
                  $content->set_previous_page($feed->get_user_link($registry, $user, $format, ($page - 1)));
                if ($total > ($page * $perPage))
                  $content->set_next_page($feed->get_user_link($registry, $user, $format, ($page + 1)));
              }
              else
              {
                if ($page > 1)
                  $content->set_previous_page($feed->get_homepage_link($registry, $format, ($page - 1)));
                if ($total > ($page * $perPage))
                  $content->set_next_page($feed->get_homepage_link($registry, $format, ($page + 1)));
              }
              foreach ($entries->get_entries() as $entry)
                $content->set_item($entry);
              
              $render = $content->render();
              $response = new Response($render, 200, array('Content-Type' => $content->get_mimetype()));
              $response->setCharset('UTF-8');

              return $response;
            };


    $controllers->get('/feed/{id}/{format}/', function($id, $format) use ($app, $appbox, $display_feed)
            {
              $feed = new Feed_Adapter($appbox, $id);

              if (!$feed->is_public())
              {
                return new Response('Forbidden', 403);
              }

              $request = $app['request'];

              $page = (int) $request->get('page');
              $page = $page < 1 ? 1 : $page;

              return $display_feed($feed, $format, $page);
            })->assert('id', '\d+')->assert('format', '(rss|atom)');


    $controllers->get('/userfeed/{token}/{id}/{format}/', function($token, $id, $format) use ($app, $appbox, $display_feed)
            {
              try
              {
                $token = new Feed_Token($appbox, $token, $id);
                $feed = $token->get_feed();
              }
              catch (Exception_FeedNotFound $e)
              {
                return new Response('Not Found', 404);
              }
              $request = $app['request'];

              $page = (int) $request->get('page');
              $page = $page < 1 ? 1 : $page;

              return $display_feed($feed, $format, $page, $token->get_user());
            })->assert('id', '\d+')->assert('format', '(rss|atom)');


    $controllers->get('/userfeed/aggregated/{token}/{format}/', function($token, $format) use ($app, $appbox, $display_feed)
            {
              try
              {
                $token = new Feed_TokenAggregate($appbox, $token);
                $feed = $token->get_feed();
              }
              catch (Exception_FeedNotFound $e)
              {
                return new Response('', 404);
              }

              $request = $app['request'];

              $page = (int) $request->get('page');
              $page = $page < 1 ? 1 : $page;

              return $display_feed($feed, $format, $page, $token->get_user());
            })->assert('id', '\d+')->assert('format', '(rss|atom)');


    $controllers->get('/aggregated/{format}/', function($format) use ($app, $appbox, $display_feed)
            {
              $feeds = Feed_Collection::load_public_feeds($appbox);
              $feed = $feeds->get_aggregate();

              $request = $app['request'];
              $page = (int) $request->get('page');
              $page = $page < 1 ? 1 : $page;

              return $display_feed($feed, $format, $page);
            })->assert('format', '(rss|atom)');

    $controllers->get('/cooliris/', function() use ($app, $appbox, $display_feed) {
      $feeds = Feed_Collection::load_public_feeds($appbox);
              $feed = $feeds->get_aggregate();

              $request = $app['request'];
              $page = (int) $request->get('page');
              $page = $page < 1 ? 1 : $page;

              return $display_feed($feed, Feed_Adapter::FORMAT_COOLIRIS , $page);
    });
    
    return $controllers;
  }

}