gutenberg_block_registration.php

<?php
/**
 * @package GrafikBasePlugin
 */

namespace Lib\Services\Components;

use Lib\Services\ServicesBase;
use Lib\Services\Service;

/**
 * Register functionality for Grafik Blocks.
 * @package Lib\Services\Components
 */
class Blocks extends ServicesBase implements Service {

    public function register() {
        add_action( 'init', [$this, 'init_blocks'] );
        add_action( 'enqueue_block_assets', [$this, 'enqueue_assets'] );
        add_filter( 'block_categories_all', [$this, 'create_block_categories'] );
    }

    function return_blocks_data() { 
        return json_decode(
            file_get_contents(GRAFIK_WP_PLUGIN_PATH  . 'grafik-blocks.json'),
            true
        );
    }
    
    public function init_blocks() {

        // Require the render callbacks for each dynamic block.
        require_once GRAFIK_WP_PLUGIN_PATH . 'app/render_callbacks/render_callbacks.php';
        $path_to_blocks = GRAFIK_WP_PLUGIN_PATH . 'app/blocks';
        $blocks = $this->return_blocks_data();
        // Loop through the decoded blocks and register them according to the block type
        foreach ( $blocks ?? [] as $key => $val ) {
            switch ($key) {
                case 'static':
                    foreach ( $val ?? [] as $block ) {
                        register_block_type(
                            "{$path_to_blocks}/{$key}/{$block}"
                        );
                    }
                    break;
                case 'dynamic':
                    foreach ( $val ?? [] as $block => $render_callback ) {
                        register_block_type(
                            "{$path_to_blocks}/{$key}/{$block}",
                            array(
                                'render_callback' => $render_callback,
                            )
                        );
                    }
                    break;
            }
        }
    }

    public function enqueue_assets() {
        $blocks = $this->return_blocks_data();

        foreach ( $blocks['dynamic'] ?? [] as $key => $val ) {
            $path = GRAFIK_WP_PLUGIN_PATH . "build/blocks/{$key}/front-end.js";

            if ( !file_exists( $path ) ) return;

            $label = "{$key}_front_end_script";
            wp_register_script(
                $label,
                GRAFIK_WP_PLUGIN_PATH . "build/blocks/{$key}/front-end.js",
                [],
                filemtime($path),
            );

            if ( has_block( "grafik-blocks/{$key}" ) ) {
                wp_enqueue_script( $label );
            }

        }
    }

    /**
    * Register the category for the Blocks
    */
    public function create_block_categories( $categories ) {

        return array_merge(
            [
                [
                    'slug' => 'grafik-blocks',
                    'title' => __( 'Grafik Blocks', 'grafik-blocks' ),
                ],
            ],
            $categories,
        );
    }

}