vue-wp/plugins/cia-post-types/cia-post-types.php

<?php
/**
 * Craft in America Custom Types Plugin
 *
 * @since             1.0.0
 * @package           cia_post_types
 *
 * @wordpress-plugin
 * Plugin Name:       Craft in America - Content Types
 * Plugin URI:
 * Description:       Adds custom custom types, and p2p relationships
 * Version:           1.0.0
 * Author:            TOJ <john@yvvas.com>
 */

// If this file is called directly, abort.
if ( ! defined( 'WPINC' ) ) { die; }

require_once 'includes/cmb2/init.php';

include('includes/custom-types.php');
include('includes/custom-taxonomies.php');
include('includes/custom-metaboxes.php');
include('includes/p2p-mappings.php');

/**
 * Class that holds all the necessary
 * functionality to build custom post types
 */
class PostType {
    /**
     * The custom post type slug
     * @var string
     */
    private $post_type;
    /**
     * The custom post type icon
     * @var string
     */
    private $icon;

    function __construct($post_type, $icon) {
        $this->post_type = $post_type;
        $this->icon = $icon;
    }

    /** Register custom post type call-back */
    public function register_post_type() {
        $args = [
            'label'              => esc_html( ucfirst($this->post_type), 'test-plugin' ),
            'public'             => true,
            'menu_position'      => 47,
            'menu_icon'          => $this->icon,
            'supports'           => ['title', 'editor', 'revisions', 'thumbnail'],
            'has_archive'        => false,
            'show_in_rest'       => true,
            'publicly_queryable' => true, // Needed for slug
            'rewrite'            => array( // Rewrite permalink stuff
                'slug' => $this->post_type,
                'with_front' => false
            ),
        ];

        register_post_type( $this->post_type, $args );
    }
}

/**
 * Plugin Logic
 * Where the magic actually happens
 */
$custom_types = get_all_custom_types();
foreach ($custom_types as $type) {
    $icon = get_icon($type);
    $custom_type_instance = new PostType($type, $icon);

    add_action( 'init', [ $custom_type_instance, 'register_post_type' ], 10 );
}

/**
 * Create taxonomies
 */
add_action('init', 'create_materials_taxonomy');
add_action('init', 'create_types_taxonomy');

/**
 * Create CMB Metaboxes
 */
add_action( 'cmb2_admin_init', 'cmb2_hero_metaboxes' );
add_action( 'cmb2_admin_init', 'cmb2_sticky_metaboxes' );
add_action( 'cmb2_admin_init', 'cmb2_artist_sort_metaboxes' );
add_action( 'cmb2_admin_init', 'cmb2_episode_credits_metaboxes' );
add_action( 'cmb2_admin_init', 'cmb2_event_date_metaboxes' );
add_action( 'cmb2_admin_init', 'cmb2_exhibition_date_metaboxes' );