videos.php

<?php

// domain.com/videos/funny/cute-dogs/

function add_video_post_type() {

    $labels = array(
        'name'                => _x( 'Videos', 'Post Type General Name', 'kibble' ),
        'singular_name'       => _x( 'Video', 'Post Type Singular Name', 'kibble' ),
        'menu_name'           => __( 'Videos', 'kibble' ),
        'parent_item_colon'   => __( 'Parent Item:', 'kibble' ),
        'all_items'           => __( 'All Items', 'kibble' ),
        'view_item'           => __( 'View Item', 'kibble' ),
        'add_new_item'        => __( 'Add New Item', 'kibble' ),
        'add_new'             => __( 'Add New', 'kibble' ),
        'edit_item'           => __( 'Edit Item', 'kibble' ),
        'update_item'         => __( 'Update Item', 'kibble' ),
        'search_items'        => __( 'Search Item', 'kibble' ),
        'not_found'           => __( 'Not found', 'kibble' ),
        'not_found_in_trash'  => __( 'Not found in Trash', 'kibble' ),
    );
    $rewrite = array(
        'slug'                => 'videos/%video_types%',
        'with_front'          => true,
        'pages'               => true,
        'feeds'               => true,
    );
    $args = array(
        'label'               => __( 'video_type', 'kibble' ),
        'description'         => __( 'Video Posts', 'kibble' ),
        'labels'              => $labels,
        'supports'            => array( 'title', 'editor', 'thumbnail', ),
        'taxonomies'          => array( 'video_types' ),
        'hierarchical'        => false,
        'public'              => true,
        'show_ui'             => true,
        'show_in_menu'        => true,
        'show_in_nav_menus'   => true,
        'show_in_admin_bar'   => true,
        'menu_position'       => 5,
        'menu_icon'           => 'dashicons-format-video',
        'can_export'          => true,
        'has_archive'         => true,
        'exclude_from_search' => false,
        'publicly_queryable'  => true,
        'rewrite'             => $rewrite,
        'capability_type'     => 'page',
    );
    register_post_type( 'video_type', $args );

}

add_action( 'init', 'add_video_post_type', 0 );

function custom_video_types() {

    $labels = array(
        'name'                       => _x( 'Video Categories', 'Taxonomy General Name', 'kibble' ),
        'singular_name'              => _x( 'Video Category', 'Taxonomy Singular Name', 'kibble' ),
        'menu_name'                  => __( 'Categories', 'kibble' ),
        'all_items'                  => __( 'All Items', 'kibble' ),
        'parent_item'                => __( 'Parent Item', 'kibble' ),
        'parent_item_colon'          => __( 'Parent Item:', 'kibble' ),
        'new_item_name'              => __( 'New Item Name', 'kibble' ),
        'add_new_item'               => __( 'Add New Item', 'kibble' ),
        'edit_item'                  => __( 'Edit Item', 'kibble' ),
        'update_item'                => __( 'Update Item', 'kibble' ),
        'separate_items_with_commas' => __( 'Separate items with commas', 'kibble' ),
        'search_items'               => __( 'Search Items', 'kibble' ),
        'add_or_remove_items'        => __( 'Add or remove items', 'kibble' ),
        'choose_from_most_used'      => __( 'Choose from the most used items', 'kibble' ),
        'not_found'                  => __( 'Not Found', 'kibble' ),
    );
    $args = array(
        'labels'                     => $labels,
        'hierarchical'               => true,
        'public'                     => true,
        'show_ui'                    => true,
        'show_admin_column'          => true,
        'show_in_nav_menus'          => true,
        'show_tagcloud'              => true,
    );
    register_taxonomy( 'video_types', 'video_type', $args );

}

add_action( 'init', 'custom_video_types', 0 );

add_filter('post_type_link', 'filter_post_type_link', 10, 2);

function filter_post_type_link( $link, $post ) {

    if ( strpos( $link, '%video_types%' ) === false )
        return $link;

    $terms = wp_get_object_terms( $post->ID, 'video_types' );

    if ( current( $terms ) ) :

        $new_parent = current( $terms );

        foreach ( $terms as $term ) {
            if ( $term->parent == 0 ) {
                $new_parent = $term;
                break;
            }
        }

        $new_parent = $new_parent ? $new_parent : $terms[0];

        $category_string = $new_parent->slug;

        $category_string = trim( $category_string, '/' );

    endif;

    // set a default
    $category_string = ( isset( $category_string ) && $category_string ) ? $category_string : 'uncategorized';

    $link = str_replace( '%video_types%', $category_string, $link );
    $link = str_replace( '%post_name%', $post->post_name, $link );
    return $link;
}