plugin.php

<?php
/**
 * Plugin Name: WP GraphQL Gutenberg ACF
 * Plugin URI: https://github.com/pristas-peter/wp-graphql-gutenberg-acf
 * Description: Enable acf blocks in WP GraphQL.
 * Author: pristas-peter
 * Author URI:
 * Version: 0.3.0
 * License: GPL-3
 * License URI: https://www.gnu.org/licenses/gpl-3.0.html
 */

namespace WPGraphQLGutenbergACF;

use GraphQL\Type\Definition\Type;
use WPGraphQL\Data\DataSource;
use GraphQL\Type\Definition\CustomScalarType;
use GraphQL\Executor\Executor;
use WPGraphQL\ACF\Config;
use WPGraphQLGutenberg\Blocks\Block;
use WPGraphQLGutenberg\Schema\Types\BlockTypes;

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit();
}

if ( ! class_exists( 'WPGraphQLGutenbergACF' ) && class_exists( 'WPGraphQL\ACF\Config' ) ) {
	final class WPGraphQLGutenbergACF extends \WPGraphQL\ACF\Config {

		private static $instance;

		public static function instance() {
			if ( ! isset( self::$instance ) ) {
				self::$instance = new WPGraphQLGutenbergACF();
			}

			return self::$instance;
		}

		public static function format_graphql_block_type_acf_name( $block_name ): string
		{
			return \WPGraphQLGutenberg\Schema\Types\BlockTypes::format_block_name(
							$block_name
					) . 'Fields';
		}

		protected function add_acf_fields_to_block( $block_type ) {
			$field_groups = acf_get_field_groups(
					array(
							'block' => $block_type['name'],
					)
			);

			if ( empty( $field_groups ) || ! is_array( $field_groups ) ) {
				return;
			}

			$type_name = BlockTypes::format_block_name( $block_type['name'] );

			foreach ( $field_groups as $field_group ) {
				$field_name = isset( $field_group['graphql_field_name'] )
						? $field_group['graphql_field_name']
						: Config::camel_case( $field_group['title'] );

				$field_group['type'] = 'group';
				$field_group['name'] = $field_name;
				$config              = array(
						'name'            => $field_name,
						'description'     => $field_group['description'],
						'acf_field'       => $field_group,
						'acf_field_group' => null,
						'resolve'         => function ( $root ) use ( $field_group ) {
							return isset( $root ) ? $root : null;
						},
				);

				$this->register_graphql_field( $type_name, $field_name, $config );
			}
		}

		public function get_root_id( $id, $root ) {
			if ( $root instanceof Block ) {
				acf_setup_meta(
						$root['attributes']['data'],
						$root['attributes']['id'],
						false
				);

				return $root['attributes']['id'];
			} // end if

			return $id;
		}

		public function block_type_fields( $fields, $block_type, $type_registry ) {
			$this->type_registry = $type_registry;

			if ( substr( $block_type['name'], 0, 4 ) === 'acf/' ) {
				$this->add_acf_fields_to_block( $block_type );
			}

			return $fields;
		}
	}
}


/**
 * Initialize the plugin
 *
 * @return WPGraphQLGutenbergACF|void
 */
function init() {
	/**
	 * If dependencies are missing, do not initialize the code
	 */
	if ( false === can_load_plugin() ) {
		// Show the admin notice
		add_action( 'admin_init', __NAMESPACE__ . '\show_admin_notice' );
		// Bail
		return;
	}

	add_filter(
			'graphql_acf_get_root_id',
			function ( $id, $root ) {
				return WPGraphQLGutenbergACF::instance()->get_root_id( $id, $root );
			},
			10,
			2
	);

	add_filter(
			'graphql_gutenberg_block_type_fields',
			function ( $fields, $block_type, $type_registry ) {
				return WPGraphQLGutenbergACF::instance()->block_type_fields( $fields, $block_type, $type_registry );
			},
			10,
			3
	);
}

add_action( 'acf/init', '\WPGraphQLGutenbergACF\init', 100 );

/**
 * Show admin notice to admins if this plugin is active but dependencies are missing
 * are not active
 *
 * @return bool
 */
function show_admin_notice() {
	/**
	 * For users with lower capabilities, don't show the notice
	 */
	if ( ! current_user_can( 'manage_options' ) ) {
		return false;
	}

	add_action(
			'admin_notices',
			function () {
				?>
				<div class="error notice">
					<p><?php esc_html_e( 'WPGraphQL, Advanced Custom Fields, WPGraphQL for Advanced Custom Fields and  WPGraphQL Gutenberg must be active for "wp-graphql-gutenberg-acf" to work.', 'wp-graphql-gutenberg-acf' ); ?>
					</p>
				</div>
				<?php
			}
	);
}

/**
 * Check whether ACF, WPGraphQL, WPGraphQlACF and WPGraphQLGutenberg are active
 *
 * @return bool
 * @since 0.3
 */
function can_load_plugin() {
	// Is ACF active?
	if ( ! class_exists( 'ACF' ) ) {
		return false;
	}

	// Is WPGraphQL active?
	if ( ! class_exists( 'WPGraphQL' ) ) {
		return false;
	}

	// is WPGraphQLACF active?
	if ( ! class_exists( 'WPGraphQL\ACF\ACF' ) ) {
		return false;
	}

	// is WPGraphQLGutenberg active?
	if ( ! class_exists( 'WPGraphQLGutenberg\WPGraphQLGutenberg' ) ) {
		return false;
	}

	return true;
}