Count View Custom Terms

<?php
/*
Plugin Name: Taxonomy View Count
Plugin URI: http://www.anhtuannd.com
Description: Get Taxonomy View Count
Author: anhtuannd, mitcho (Michael Yoshitaka Erlewine), sirzooro
Author URI:http://www.anhtuannd.com
Version: 1.0.0
*/

class Taxonomy_Metadata {
    function __construct() {
        add_action( 'init', array($this, 'wpdbfix') );
    }

    /*
     * Quick touchup to wpdb
     */
    function wpdbfix() {
        global $wpdb;
        $wpdb->taxonomymeta = "{$wpdb->prefix}taxonomymeta";
    }

    /*
     * TABLE MANAGEMENT
     */

    function activate() {
        global $wpdb;

        $this->setup_blog();
    }

    function setup_blog() {
        global $wpdb;

        $charset_collate = '';
        if ( ! empty($wpdb->charset) )
            $charset_collate = "DEFAULT CHARACTER SET $wpdb->charset";
        if ( ! empty($wpdb->collate) )
            $charset_collate .= " COLLATE $wpdb->collate";

        $tables = $wpdb->get_results("show tables like '{$wpdb->prefix}taxonomymeta'");
        if (!count($tables))
            $wpdb->query("CREATE TABLE {$wpdb->prefix}taxonomymeta (
                meta_id bigint(20) unsigned NOT NULL auto_increment,
                taxonomy_id bigint(20) unsigned NOT NULL default '0',
                meta_key varchar(255) default NULL,
                meta_value longtext,
                PRIMARY KEY (meta_id),
                KEY taxonomy_id (taxonomy_id),
                KEY meta_key (meta_key)
                ) $charset_collate;");
    }
}
$taxonomy_metadata = new Taxonomy_Metadata;
register_activation_hook( __FILE__, array($taxonomy_metadata, 'activate') );

function get_term_id() {
    $term = get_queried_object();

    if ( !$term )
        return 0;

    if ( empty( $term->term_id ) )
        return 0;

    return $term->term_id;
}

// Template tag functions
// Display view count of current term
function display_term_view() {

    $term_id = get_term_id();

    $count = get_metadata('taxonomy', $term_id, 'views', true);
    if ($count === false) {
        add_metadata('taxonomy', $term_id, 'views', 1, false);
        if (!is_user_logged_in() && !is_bot()) return 1;
        else return 0;
    }
    else {
        if (!is_user_logged_in() && !is_bot()) {
            $count++;
            update_metadata('taxonomy', $term_id, 'views', $count, '');
            return $count;
        }
        else return $count;
    }
}

function hidden_term_view() {
    display_term_view();
}

function is_bot () {
    $botlist = array("Googlebot", "MSNBOT");
    $bottest = strtolower($_SERVER['HTTP_USER_AGENT']);

    foreach($botlist as $bot) {
        if(strpos($bottest,$bot)!==false) {
            $thebot = $bot;
            break;
        }
    }
    return ( $thebot ? $thebot : false );
}

add_filter('manage_edit-category_columns', 'add_view_column', 10, 2);
add_filter('manage_edit-post_tag_columns', 'add_view_column', 10, 2);
add_action( 'init', 'add_custom_taxonomy_view', 1000 );

function add_custom_taxonomy_view() {
    $args=array(
        '_builtin' => false
        );

    $output = 'names'; // or objects
    $taxonomies = get_taxonomies($args,$output);
    //print_r($taxonomies);
    if  ($taxonomies) {
        foreach ($taxonomies  as $taxonomy ) {
            add_filter('manage_edit-'.$taxonomy.'_columns', 'add_view_column', 10, 2);
            add_filter('manage_'.$taxonomy.'_custom_column' , 'add_taxonomy_view_column', 10, 3 );
            add_filter( 'manage_edit-'.$taxonomy.'_sortable_columns', 'add_view_sort_column' );

        }
    }
}

function add_view_column($columns)
{
    $columns['views'] = 'View';
    return $columns;
}

function add_view_sort_column($columns)
{
    $columns['views'] = 'view';
    return $columns;
}


add_filter( 'manage_category_custom_column' , 'add_taxonomy_view_column', 10, 3 );
add_filter( 'manage_edit-category_sortable_columns', 'add_view_sort_column' );

add_filter( 'manage_post_tag_custom_column' , 'add_taxonomy_view_column', 10, 3 );
add_filter( 'manage_edit-post_tag_sortable_columns', 'add_view_sort_column' );


function add_taxonomy_view_column($blank, $column, $term_id ) {
    return getViewFromTerm($term_id);
}

function getViewFromTerm($term_id) {
    $count = get_metadata('taxonomy', $term_id, 'views', true);
    if (($count === false) || !isset($count)||(trim($count)=='')) {
        add_metadata('taxonomy', $term_id, 'views', 0, false);
        return 0;
    }
    return $count;
}

function add_term_meta_query( $terms, $taxonomies, $args) {
    if(isset($args['orderby'])&&($args['orderby']=='view')) {
        $data = array();
        $index = array();
        foreach($terms as $term) {
            $data[] = $term;
            $index[] = getViewFromTerm($term->term_id);

        }
        if (trim($args['order']=='asc')) $sort = SORT_ASC;
        else if (trim($args['order']=='desc')) $sort = SORT_DESC;
        else $sort = SORT_ASC;
        array_multisort($index, $sort, $data);
        return $data;
    }
    else return $terms;
}
add_filter( 'get_terms', 'add_term_meta_query', 10, 3);

?>