Custom rewrite rules

rewrites.php

add_filter('post_type_link', 'ox_post_type_link', 1, 3);
function ox_post_type_link( $link, $post = 0 ){
	
    if ( $post->post_type == 'plan' ){
    	
    	$terms = wp_get_object_terms( $post->ID, 'tax_destination' );
        if (!is_wp_error($terms) && !empty($terms) && is_object($terms[0]))
            $taxonomy_slug = $terms[0]->slug;
        return home_url( $taxonomy_slug .'/' . $post->post_name );

    } elseif ( $post->post_type == 'product' ){

    	$terms = wp_get_object_terms( $post->ID, 'tax_destination' );
        if (!is_wp_error($terms) && !empty($terms) && is_object($terms[0]))
            $taxonomy_slug = $terms[0]->slug;
        return home_url( $taxonomy_slug .'/experiencias/' . $post->post_name );

    } elseif ( $post->post_type == 'area' ){

    	$terms = wp_get_object_terms( $post->ID, 'tax_destination' );
        if (!is_wp_error($terms) && !empty($terms) && is_object($terms[0]))
            $taxonomy_slug = $terms[0]->slug;
        return home_url( $taxonomy_slug .'/zonas/' . $post->post_name );

    } elseif ( $post->post_type == 'itinerary' ){

    	$terms = wp_get_object_terms( $post->ID, 'tax_destination' );
        if (!is_wp_error($terms) && !empty($terms) && is_object($terms[0]))
            $taxonomy_slug = $terms[0]->slug;
        return home_url( $taxonomy_slug .'/itinerarios/' . $post->post_name );

    } elseif ( $post->post_type == 'accommodation' ){

    	$terms = wp_get_object_terms( $post->ID, 'tax_destination' );
        if (!is_wp_error($terms) && !empty($terms) && is_object($terms[0]))
            $taxonomy_slug = $terms[0]->slug;
        return home_url( $taxonomy_slug .'/alojamientos/' . $post->post_name );

    } else {
        return $link;
    }
}

add_filter('post_type_archive_link', 'ox_post_type_archive_link', 1, 2);
function ox_post_type_archive_link( $link, $post_type ) {
	if( 'plan' == $post_type ){
					
		return home_url( $_SESSION['destino_slug'] . '/planes' );
	}	
	if( 'itinerary' == $post_type ){
					
		return home_url( $_SESSION['destino_slug'] . '/itinerarios' );
	}
	if( 'accommodation' == $post_type ){
					
		return home_url( $_SESSION['destino_slug'] . '/alojamientos' );
	}
	if( 'area' == $post_type ){
					
		return home_url( $_SESSION['destino_slug'] . '/zonas' );
	}
	if( 'product' == $post_type ){
					
		return home_url( $_SESSION['destino_slug'] . '/experiencias' );
	}
	return $link;
}

add_action( 'init', 'ox_rewrite_add_rewrites' );
function ox_rewrite_add_rewrites()
{

    //Archivo para planes /granada/planes
    add_rewrite_rule(
        '^([^/]+)/planes/?$', //un segmento + el literal "planes"
        'index.php?post_type=plan',
        'top'
    );

    //Archivo para planes /granada/planes
    add_rewrite_rule(
        '^([^/]+)/itinerarios/?$', //un segmento + el literal "planes"
        'index.php?post_type=itinerary',
        'top'
    );

    //Archivo para planes /granada/planes
    add_rewrite_rule(
        '^([^/]+)/zonas/?$', //un segmento + el literal "planes"
        'index.php?post_type=area',
        'top'
    );

    //Archivo para experiencias /granada/experiencias
    add_rewrite_rule(
        '^([^/]+)/experiencias/?$', //un segmento + el literal "planes"
        'index.php?post_type=product',
        'top'
    );

    //Archivo para alojamientos /granada/alojamientos
    add_rewrite_rule(
        '^([^/]+)/alojamientos/?$', 
        'index.php?post_type=accommodation',
        'top'
    );

    //Home destino /granada
    add_rewrite_rule(
        '^([^/]+)/?$', //un solo segmento
        'index.php?post_type=destination&destination=$matches[1]',
        'top'
    );



    //Detalle plan /granada/que-hacer-en-granada
    add_rewrite_rule(
        '^([^/]+)/([^/]+)/?$', //un segmento y despues otro segmento
        'index.php?plan=$matches[2]',
        'top'
    );    

    //Detalle zona /granada/zonas/albaicin
    add_rewrite_rule(
        '^([^/]+)/zonas/([^/]+)/?$', //un segmento y despues otro segmento
        'index.php?area=$matches[2]',
        'top'
    );    

    //Detalle itinerario /granada/itinerarios/granada-en-un-dia
    add_rewrite_rule(
        '^([^/]+)/itinerarios/([^/]+)/?$', //un segmento y despues otro segmento
        'index.php?itinerary=$matches[2]',
        'top'
    );  

    //Detalle experiencia /granada/experiencias/granada-en-globo
    add_rewrite_rule(
        '^([^/]+)/experiencias/([^/]+)/?$', //un segmento y despues otro segmento
        'index.php?product=$matches[2]',
        'top'
    );    

    flush_rewrite_rules();
}