<?php
// 安全设置--------------------------boxmoe.com--------------------------
if(!defined('ABSPATH')){
    echo'Look your sister';
    exit;
}
if(get_boxmoe('boxmoe_no_categoty')){
    add_action( 'load-themes.php',  'no_category_base_refresh_rules');
    add_action('created_category', 'no_category_base_refresh_rules');
    add_action('edited_category', 'no_category_base_refresh_rules');
    add_action('delete_category', 'no_category_base_refresh_rules');
    function no_category_base_refresh_rules() {
        global $wp_rewrite;
        $wp_rewrite -> flush_rules();
    }
    // register_deactivation_hook(__FILE__, 'no_category_base_deactivate');
    // function no_category_base_deactivate() {
    //     remove_filter('category_rewrite_rules', 'no_category_base_rewrite_rules');
    //     // We don't want to insert our custom rules again
    //     no_category_base_refresh_rules();
    // }
    // Remove category base
    add_action('init', 'no_category_base_permastruct');
    function no_category_base_permastruct() {
        global $wp_rewrite, $wp_version;
        if (version_compare($wp_version, '3.4', '<')) {
            // For pre-3.4 support
            $wp_rewrite -> extra_permastructs['category'][0] = '%category%';
        } else {
            $wp_rewrite -> extra_permastructs['category']['struct'] = '%category%';
        }
    }
    // Add our custom category rewrite rules
    add_filter('category_rewrite_rules', 'no_category_base_rewrite_rules');
    function no_category_base_rewrite_rules($category_rewrite) {
        //var_dump($category_rewrite); // For Debugging
        $category_rewrite = array();
        $categories = get_categories(array('hide_empty' => false));
        foreach ($categories as $category) {
            $category_nicename = $category -> slug;
            if ($category -> parent == $category -> cat_ID)// recursive recursion
                $category -> parent = 0;
            elseif ($category -> parent != 0)
                $category_nicename = get_category_parents($category -> parent, false, '/', true) . $category_nicename;
            $category_rewrite['(' . $category_nicename . ')/(?:feed/)?(feed|rdf|rss|rss2|atom)/?$'] = 'index.php?category_name=$matches[1]&feed=$matches[2]';
            $category_rewrite['(' . $category_nicename . ')/page/?([0-9]{1,})/?$'] = 'index.php?category_name=$matches[1]&paged=$matches[2]';
            $category_rewrite['(' . $category_nicename . ')/?$'] = 'index.php?category_name=$matches[1]';
        }
        // Redirect support from Old Category Base
        global $wp_rewrite;
        $old_category_base = get_option('category_base') ? get_option('category_base') : 'category';
        $old_category_base = trim($old_category_base, '/');
        $category_rewrite[$old_category_base . '/(.*)$'] = 'index.php?category_redirect=$matches[1]';
        
        //var_dump($category_rewrite); // For Debugging
        return $category_rewrite;
    }
        
    // Add 'category_redirect' query variable
    add_filter('query_vars', 'no_category_base_query_vars');
    function no_category_base_query_vars($public_query_vars) {
        $public_query_vars[] = 'category_redirect';
        return $public_query_vars;
    }
        
    // Redirect if 'category_redirect' is set
    add_filter('request', 'no_category_base_request');
    function no_category_base_request($query_vars) {
        //print_r($query_vars); // For Debugging
        if (isset($query_vars['category_redirect'])) {
            $catlink = trailingslashit(get_option('home')) . user_trailingslashit($query_vars['category_redirect'], 'category');
            status_header(301);
            header("Location: $catlink");
            exit();
        }
        return $query_vars;
    }
}
