add_action( 'init', 'add_property_and_location' );

function add_property_and_location() {

// register custom post type property

$labels = array(
    'name' => _x('Properties', 'post type general name'),
    'singular_name' => _x('Property', 'post type singular name'),
    'add_new' => _x('Add New', 'book'),
    'add_new_item' => __('Add New Property'),
    'edit_item' => __('Edit Property'),
    'new_item' => __('New Property'),
    'all_items' => __('All Properties'),
    'view_item' => __('View Property'),
    'search_items' => __('Search Properties'),
    'not_found' =>  __('No properties found'),
    'not_found_in_trash' => __('No properties found in Trash'), 
    'parent_item_colon' => '',
    'menu_name' => 'Properties'

  );
  $args = array(
    'labels' => $labels,
    'public' => true,
    'publicly_queryable' => true,
    'show_ui' => true, 
    'show_in_menu' => true, 
    'query_var' => true,
    'rewrite' => true,
    'has_archive' => true, 
    'hierarchical' => true,
    'menu_position' => null,
    'supports' => array( 'custom-fields', 'title', 'editor', 'author', 'thumbnail', 'excerpt', 'comments','page-attributes'  ),
  ); 

 register_post_type('property',$args);
 
 // register custom taxonomy location
 
 $labels = array(
    'name' => _x( 'Locations', 'taxonomy general name' ),
    'singular_name' => _x( 'Location', 'taxonomy singular name' ),
    'search_items' =>  __( 'Search location' ),
    'all_items' => __( 'All locations' ),
    'parent_item' => __( 'Parent location' ),
    'parent_item_colon' => __( 'Parent Location:' ),
    'edit_item' => __( 'Edit Location' ), 
    'update_item' => __( 'Update location' ),
    'add_new_item' => __( 'Add New location' ),
    'new_item_name' => __( 'New location Name' ),
    'menu_name' => __( 'location' ),
  ); 
  
  register_taxonomy('location',array('property'), array(
    'public' => true,
    'labels' => $labels,
    'show_ui' => true,
    'query_var' => true,
    'hierarchical' => true,
    'rewrite' => array('hierarchical' => true, 'slug' => 'properties' )
  ));
}

if(!class_exists('Refactord_add_rewrite_rules')):
    class Refactord_add_rewrite_rules {

        var $query_vars = array();
        var $rules = array();
        var $show_rules = false; //used for debugging rewrite rules
        var $show_query_vars = false; //used for debugging query vars

        function __construct($options = NULL){
            if(!is_null($options)){
                $this->init($options);
            }
        }

        function init($options){
            foreach($options as $key => $value){
                $this->$key = $value;
            }

            if(!empty($this->rules)){
                add_action('wp_head', array(&$this, 'flush_rules'));
                add_action('generate_rewrite_rules', array(&$this, 'add_rules'));
            }

            if(!empty($this->query_vars)){
                add_filter('query_vars', array(&$this, 'add_query_vars'));
            }

            if($this->show_rules){
                add_action('wp_footer', array(&$this, 'show_rules'), 1);
            }

            if($this->show_query_vars){
                add_action('wp_footer', array(&$this, 'show_query_vars'), 1);
            }
        }

        function add_query_vars($query_vars){
            foreach($this->query_vars as $var){
                $query_vars[] = $var;
            }
            return $query_vars;
        }

        function add_rules(){
            global $wp_rewrite;
            $wp_rewrite->rules = $this->rules + $wp_rewrite->rules;
        }

        function rules_exist(){
            global $wp_rewrite;

            foreach($this->rules as $key => $rule){
                if(!in_array($rule, $wp_rewrite->rules) || !key_exists($key, $wp_rewrite->rules)){
                        return FALSE;
                }
            }
            return TRUE;
        }

        function flush_rules(){
            global $wp_rewrite;
            if(!$this->rules_exist()){
                $wp_rewrite->flush_rules();
            }
        }

        function show_rules(){
            global $wp_rewrite;

            echo "<pre>";
            print_r($wp_rewrite->rules);
            echo "</pre>";
        }

        function show_query_vars(){
            global $wp_query;

            echo "<pre>";
            print_r($wp_query->query_vars);
            echo "</pre>";
        }
    }
endif;



  $options = array(  
    'rules' => array(
      'properties/(.+?)/(for-sale)/page/?([0-9]{1,})/?$' => 'index.php?location=$matches[1]&type=$matches[2]&paged=$matches[3]',
      'properties/(.+?)/(for-sale)/?$' => 'index.php?location=$matches[1]&type=$matches[2]',
      'properties/(.+?)/(for-rent)/page/?([0-9]{1,})/?$' => 'index.php?location=$matches[1]&type=$matches[2]&paged=$matches[3]',
      'properties/(.+?)/(for-rent)/?$' => 'index.php?location=$matches[1]&type=$matches[2]'
      ), 
      'query_vars' => array('type') 
  );  
  $add_rewrite_rules = new Refactord_add_rewrite_rules($options);