<?php

     /**
     * Elgg groupsrss plugin
     *
     * @package groupsrss
     * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
     * @author Pjotr Savitski
     * @copyright Centre for Educational Technology, Tallinn University 2009
     * @link http://htk.tlu.ee/htk/in-english/
     **/

    function groupsrss_init() {
        global $CONFIG;

        // Extend column view
        extend_view('groups/left_column', 'groupsrss/groupprofile_rss');
        // Extend css view
        extend_view('css', 'groupsrss/groupsrss_css');
    }

    // Override for groups_fields_setup function in /mod/groups/start.php
    function groupsrss_groups_fields_setup_override() {
        global $CONFIG;

        $profile_defaults = array(

            'name' => 'text',
            'description' => 'longtext',
            'briefdescription' => 'text',
            'interests' => 'tags',
            'website' => 'url',
            'externalrss' => 'url',
        );

        $CONFIG->group = trigger_plugin_hook('profile:fields', 'group', NULL, $profile_defaults);
    }

    // Shorten text and strip all the tags, only does dumb text shortening
    function groupsrss_shortenText($text, $max_length) {
        // Strip tags
        $text = strip_tags($text);

        // Check if the length is smaller than max_length
        if (strlen($text)<=$max_length)
            return $text;

        // Shorten the text
        return substr($text, 0, $max_length-3) . "...";

    }

    // Cache location
    function getGroupsRssCacheLocation() {
        global $CONFIG;
        // See if the caching path is set
        if (get_plugin_setting('groupsrss_simplepie_cache_location', 'groupsrss')) {
            return get_plugin_setting('groupsrss_simplepie_cache_location', 'groupsrss');
        }
        return false;
    }

    // Initialize
    global $CONFIG;
    register_elgg_event_handler('init', 'system', 'groupsrss_init');
    // Override for /mod/groups/start.php, Ensure this runs after other plugins
    register_elgg_event_handler('init', 'system', 'groupsrss_groups_fields_setup_override', 10000);

?>