Services/Feeds/classes/class.ilObjectFeedWriter.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2006 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program is distributed in the hope that it will be useful,             |
        | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
        | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
        | GNU General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/

include_once("./Services/News/classes/class.ilNewsItem.php");
include_once("./Services/Feeds/classes/class.ilFeedItem.php");
include_once("./Services/Feeds/classes/class.ilFeedWriter.php");

class ilObjectFeedWriter extends ilFeedWriter
{
        function ilObjectFeedWriter($a_ref_id)
        {
                global $ilSetting, $lng;
                
                parent::ilFeedWriter();
                
                if ($a_ref_id <= 0)
                {
                        return;
                }
                
                include_once("./Services/Block/classes/class.ilBlockSetting.php");
                $news_set = new ilSetting("news");
                if (!$news_set->get("enable_rss_for_internal"))
                {
                        return;
                }
                $obj_id = ilObject::_lookupObjId($a_ref_id);
                $obj_type = ilObject::_lookupType($obj_id);
                $obj_title = ilObject::_lookupTitle($obj_id);

                if (!ilBlockSetting::_lookup("news", "public_feed", 0, $obj_id))
                {
                        return;
                }

                // not nice, to do: general solution
                if ($obj_type == "mcst")
                {
                        include_once("./Modules/MediaCast/classes/class.ilObjMediaCastAccess.php");
                        
                        if (!ilObjMediaCastAccess::_lookupOnline($obj_id))
                        {
                                return;
                        }
                }

                $cont_loc = new ilLocatorGUI();
                $cont_loc->addContextItems($a_ref_id, true);
                $cont_loc->setTextOnly(true);
                $loc = $cont_loc->getHTML();
                if (trim($loc) != "")
                {
                        $loc = " [".$loc."] ";
                }
                
                $news_item = new ilNewsItem();
                $news_item->setContextObjId($obj_id);
                $news_item->setContextObjType($obj_type);
                $items = $news_item->getNewsForRefId($a_ref_id, true, false, 0, true);
                if ($ilSetting->get('short_inst_name') != "")
                {
                        $this->setChannelTitle($ilSetting->get('short_inst_name')." - ".
                                $this->prepareStr($loc.$obj_title));
                }
                else
                {
                        $this->setChannelTitle("ILIAS"." - ".$this->prepareStr($loc.$obj_title));
                }
                $this->setChannelAbout(ILIAS_HTTP_PATH);
                $this->setChannelLink(ILIAS_HTTP_PATH);
                //$this->setChannelDescription("ILIAS Channel Description");
                $i = 0;
                foreach($items as $item)
                {
                        $i++;
                        
                        $obj_title = ilObject::_lookupTitle($item["context_obj_id"]);
                        
                        $feed_item = new ilFeedItem();
                        
                        $title = ilNewsItem::determineNewsTitle
                                ($item["context_obj_type"], $item["title"], $item["content_is_lang_var"],
                                $item["agg_ref_id"], $item["aggregation"]);
                                
                        // path
                        $cont_loc = new ilLocatorGUI();
                        $cont_loc->addContextItems($item["ref_id"], true, $a_ref_id);
                        $cont_loc->setTextOnly(true);
                        $loc = $cont_loc->getHTML();
                        if (trim($loc) != "")
                        {
                                $loc = "[".$loc."]";
                        }

                        $feed_item->setTitle($this->prepareStr($loc)." ".$this->prepareStr($obj_title).
                                ": ".$this->prepareStr($title));
                        $feed_item->setDescription($this->prepareStr(nl2br($item["content"])));
                        $feed_item->setLink(ILIAS_HTTP_PATH."/goto.php?client_id=".CLIENT_ID.
                                "&amp;target=".$item["context_obj_type"]."_".$item["ref_id"]);
                        $feed_item->setAbout($feed_item->getLink()."&amp;il_about_feed=".$item["id"]);
                        $feed_item->setDate($item["creation_date"]);
                        
                        // Enclosure
                        if ($item["content_type"] == NEWS_AUDIO &&
                                $item["mob_id"] > 0 && ilObject::_exists($item["mob_id"]))
                        {
                                $go_on = true;
                                if ($obj_type == "mcst")
                                {
                                        include_once("./Modules/MediaCast/classes/class.ilObjMediaCastAccess.php");
                                        
                                        if (!ilObjMediaCastAccess::_lookupPublicFiles($obj_id))
                                        {
                                                $go_on = false;
                                        }
                                }
                                
                                if ($go_on)
                                {
                                        include_once("./Services/MediaObjects/classes/class.ilObjMediaObject.php");
                                        $url = ilObjMediaObject::_lookupStandardItemPath($item["mob_id"], true);
                                        $file = ilObjMediaObject::_lookupStandardItemPath($item["mob_id"], false, false);
                                        if (is_file($file))
                                        {
                                                $size = filesize($file);
                                        }
                                        $feed_item->setEnclosureUrl($url);
                                        $feed_item->setEnclosureType("audio/mpeg");
                                        $feed_item->setEnclosureLength($size);
                                }
                        }
                        
                        $this->addItem($feed_item);
                }
        }
}
?>