class.ilObjectFeedWriter.php

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<?php

/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

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 __construct($a_ref_id, $a_userid = false, $a_purpose = false)
        {
                global $ilSetting, $lng;
                
                parent::__construct();
                
                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;
                }

                // path
                $loc = $this->getContextPath($a_ref_id);

                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." ".$obj_title.($a_purpose ? " - ".$a_purpose : "")));
                }
                $this->setChannelAbout(ILIAS_HTTP_PATH);
                $this->setChannelLink(ILIAS_HTTP_PATH);
                // not nice, to do: general solution
                if ($obj_type == "mcst")
                {
                        include_once("./Modules/MediaCast/classes/class.ilObjMediaCastAccess.php");
                        
                        if (!ilObjMediaCastAccess::_lookupOnline($obj_id))
                        {
                                $lng->loadLanguageModule("mcst");
                                
                                $feed_item = new ilFeedItem();
                                $feed_item->setTitle($lng->txt("mcst_media_cast_not_online"));
                                $feed_item->setDescription($lng->txt("mcst_media_cast_not_online_text"));
                                $feed_item->setLink(ILIAS_HTTP_PATH."/goto.php?client_id=".CLIENT_ID.
                                        "&amp;target=".$item["context_obj_type"]);
                                $this->addItem($feed_item);                             
                                return;
                        }
                }


                $rss_period = ilNewsItem::_lookupRSSPeriod();

                ilNewsItem::setPrivateFeedId($a_userid);
                $news_item = new ilNewsItem();
                $news_item->setContextObjId($obj_id);
                $news_item->setContextObjType($obj_type);
                $items = $news_item->getNewsForRefId($a_ref_id, true, false, $rss_period, true);

                if ($a_purpose) {
                        include_once("./Services/MediaObjects/classes/class.ilMediaItem.php");
                }
                
                $i = 0;
                foreach($items as $item)
                {
                        $i++;
                        
                        if ($a_purpose != false && $obj_type == "mcst") 
                        {
                        $mob = ilMediaItem::_getMediaItemsOfMObId($item[mob_id], $a_purpose);

                                if ($mob == false) 
                                {
                                        continue;
                                }

                        }

                        $obj_title = ilObject::_lookupTitle($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"]);

                        $loc = "";

                        if ($news_set->get("rss_title_format") == "news_obj")
                        {
                                $sep = (trim($this->prepareStr($loc)) == "")
                                        ? ""
                                        : " ";
                                $feed_item->setTitle($this->prepareStr($title)." (".$this->prepareStr($loc).$sep.$this->prepareStr($obj_title).
                                        ")");
                        }
                        else
                        {
                                $feed_item->setTitle($this->prepareStr($loc)." ".$this->prepareStr($obj_title).
                                        ": ".$this->prepareStr($title));
                        }
                        $feed_item->setDescription($this->prepareStr(nl2br(
                                ilNewsItem::determineNewsContent($item["context_obj_type"], $item["content"], $item["content_text_is_lang_var"]))));

                        // lm hack, not nice
                        if (in_array($item["context_obj_type"], array("lm")) && $item["context_sub_obj_type"] == "pg"
                                && $item["context_sub_obj_id"] > 0)
                        {
                                $feed_item->setLink(ILIAS_HTTP_PATH."/goto.php?client_id=".CLIENT_ID.
                                        "&amp;target=pg_".$item["context_sub_obj_id"]."_".$item["ref_id"]);
                        }
                        else if ($item["context_obj_type"] == "wiki" && $item["context_sub_obj_type"] == "wpg"
                                && $item["context_sub_obj_id"] > 0)
                        {
                                include_once("./Modules/Wiki/classes/class.ilWikiPage.php");
                                include_once("./Modules/Wiki/classes/class.ilWikiUtil.php");
                                $wptitle = ilWikiUtil::makeUrlTitle(ilWikiPage::lookupTitle($item["context_sub_obj_id"]));
                                $feed_item->setLink(ILIAS_HTTP_PATH."/goto.php?client_id=".CLIENT_ID.
                                        "&amp;target=".$item["context_obj_type"]."_".$item["ref_id"]."_".$wptitle);
                        }
                        else if (in_array($item["context_obj_type"], array("frm")) && $item["context_sub_obj_type"] == "pos"
                                && $item["context_sub_obj_id"] > 0)
                        {
                                // frm hack, not nice
                                include_once("./Modules/Forum/classes/class.ilObjForumAccess.php");
                                $thread_id = ilObjForumAccess::_getThreadForPosting($item["context_sub_obj_id"]);
                                if ($thread_id > 0)
                                {
                                        $feed_item->setLink(ILIAS_HTTP_PATH."/goto.php?client_id=".CLIENT_ID.
                                                "&amp;target=".$item["context_obj_type"]."_".$item["ref_id"]."_".$thread_id."_".$item["context_sub_obj_id"]);
                                }
                                else
                                {
                                        $feed_item->setLink(ILIAS_HTTP_PATH."/goto.php?client_id=".CLIENT_ID.
                                                "&amp;target=".$item["context_obj_type"]."_".$item["ref_id"]);
                                }
                        }
                        else
                        {
                                $feed_item->setLink(ILIAS_HTTP_PATH."/goto.php?client_id=".CLIENT_ID.
                                        "&amp;target=".$item["context_obj_type"]."_".$item["ref_id"]);
//echo "<br>".ILIAS_HTTP_PATH."/goto.php?client_id=".CLIENT_ID.
//                                      "&amp;target=".$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");
                                        $url = ilObjMediaObject::_lookupItemPath($item["mob_id"], true, true, $mob["purpose"]);
                                        $file = ilObjMediaObject::_lookupItemPath($item["mob_id"], false, false, $mob["purpose"]);
                                        if (is_file($file))
                                        {
                                                $size = filesize($file);
                                        }
                                        $feed_item->setEnclosureUrl($url);
                                        $feed_item->setEnclosureType((isset($mob["format"]))?$mob["format"]:"audio/mpeg");
                                        $feed_item->setEnclosureLength($size);
                                }
                        }
                        $this->addItem($feed_item);
                }
        }
}
?>