<?php
/*
Plugin Name: Page Links
Plugin URI: http://bbpress.org/plugins/topic/page-links-for-bbpress/
Plugin Author: based on work by Sam Bauers, mod by _ck_
*/

function page_links_add_css() { // pure css solution with inline stylesheet (no externals to load/check)
    echo "
    <style type='text/css'>
    #latest a.page-numbers {
        display: inline-block;
        text-align: center;
        padding: 0 3px 1px 1px;
            margin-left: 4px;
        min-width: 7px;
            letter-spacing: -2px;
            font: 11px/14px Arial, san-serif;
            border: 1px solid #ccc; border-right: 1px solid #aaa; border-bottom: 1px solid #999;
        -moz-border-radius: 1px; -khtml-border-radius: 1px; -webkit-border-radius: 1px; border-radius: 1px;
        -moz-border-radius-topleft: 3px 5px; -khtml-border-top-left-radius: 3px  5px; -webkit-border-top-left-radius: 3px  5px; border-top-left-radius: 3px  5px;
            color: #444; background:#eee;
        }
    #latest a.page-numbers:hover { color: #fff; background: #ccc; }
    </style>";
    add_filter('topic_title', 'page_links_add_links', 200); // don't add the filter until we are actually on the page  ie. not RSS
}

if (in_array(bb_get_location(),array('front-page','forum-page','tag-page','view-page'))) {  // 'search-page','favorites-page','profile-page',
    add_action('bb_head', 'page_links_add_css');
}

function page_links_add_links($title) {
    global $topic; static $perPage, $mod_rewrite;  // speedup

    $posts = $topic->topic_posts;   //  + topic_pages_add($topic->topic_id);  //  no need for pages_add on  topic tables

    if (!isset($perPage)) { // speedup by static and avoiding extra query if front-page-topics not installed
        if (function_exists('front_page_topics') && $perPage = bb_get_option('front_page_topics')) { $perPage = $perPage['topic-page']; }
        elseif (function_exists('topics_per_page')) { global $topics_per_page; $perPage = $topics_per_page['topic-page']; }
        if (empty($perPage)) { $perPage = bb_get_option('page_topics'); }
    }

    if ($posts<=$perPage) {return $title;}  // speedup

    $uri = get_topic_link();
    if (!isset($mod_rewrite)) {$mod_rewrite=bb_get_option('mod_rewrite');}  // speedup
    if ($mod_rewrite) {
        $uri = (false === $pos = strpos($uri, '?')) ? $uri . '%_%' : substr_replace($uri, '%_%', $pos, 0);
    } else {
        $uri = add_query_arg('page', '%_%', $uri);
    }

    $links = paginate_links(
        array(
            'base' => $uri,
            'format' => $mod_rewrite ? '/page/%#%' : '%#%',
            'total' => ceil($posts/$perPage),
            'current' => ceil($posts/$perPage) + 1,
            'show_all' => false,
            'type' => 'array'
        )
    );

    if ($links) { unset($links[0]); unset($links[1]); }     // no previous/first page links
    if (count($links)>2) { unset($links[2]); }          // no dots
    if ($links) { $title .= '</a> '.substr(join('', $links), 0, -4).' ';}   // close original title and cleanup

    return $title;
}

?>