Add service for checking editor dependencies

[MAILPOET-6367]

mailpoet/lib/DI/ContainerConfigurator.php

@@ -337,6 +337,7 @@ class ContainerConfigurator implements IContainerConfigurator {
     $container->autowire(\MailPoet\CustomFields\CustomFieldsRepository::class)->setPublic(true);
     // Email Editor
     $container->autowire(\MailPoet\EmailEditor\Engine\Email_Editor::class)->setPublic(true);
+    $container->autowire(\MailPoet\EmailEditor\Engine\Dependency_Check::class)->setPublic(true);
     $container->autowire(\MailPoet\EmailEditor\Engine\Email_Api_Controller::class)->setPublic(true);
     $container->autowire(\MailPoet\EmailEditor\Engine\Settings_Controller::class)->setPublic(true);
     $container->autowire(\MailPoet\EmailEditor\Engine\Theme_Controller::class)->setPublic(true);

packages/php/email-editor/src/Engine/class-dependency-check.php

@@ -0,0 +1,47 @@
+<?php
+/**
+ * This file is part of the MailPoet Email Editor package.
+ *
+ * @package MailPoet\EmailEditor
+ */
+
+declare(strict_types = 1);
+namespace MailPoet\EmailEditor\Engine;
+
+/**
+ * This class is responsible checking the dependencies of the email editor.
+ */
+class Dependency_Check {
+	/**
+	 * Minimum WordPress version required for the email editor.
+	 */
+	public const MIN_WP_VERSION = '6.7';
+
+	/**
+	 * Minimum Gutenberg version required for the email editor.
+	 *
+	 * @see https://developer.wordpress.org/block-editor/contributors/versions-in-wordpress/
+	 */
+	public const MIN_GUTENBERG_VERSION = '19.3'; // Version released in WP 6.7.
+
+	/**
+	 * Checks if all dependencies are met.
+	 */
+	public function are_dependencies_met(): bool {
+		return $this->is_gutenberg_version_compatible() || $this->is_wp_version_compatible();
+	}
+
+	/**
+	 * Checks if the WordPress version is supported.
+	 */
+	private function is_wp_version_compatible(): bool {
+		return version_compare( get_bloginfo( 'version' ), self::MIN_WP_VERSION, '>=' );
+	}
+
+	/**
+	 * Checks if the WordPress version is supported.
+	 */
+	private function is_gutenberg_version_compatible(): bool {
+		return version_compare( get_bloginfo( 'version' ), self::MIN_GUTENBERG_VERSION, '>=' );
+	}
+}

packages/php/email-editor/tests/integration/_bootstrap.php

@@ -9,6 +9,7 @@ declare(strict_types = 1);
 
 use Codeception\Stub;
 use MailPoet\EmailEditor\Container;
+use MailPoet\EmailEditor\Engine\Dependency_Check;
 use MailPoet\EmailEditor\Engine\Email_Api_Controller;
 use MailPoet\EmailEditor\Engine\Email_Editor;
 use MailPoet\EmailEditor\Engine\Patterns\Patterns;
@@ -293,6 +294,12 @@ abstract class MailPoetTest extends \Codeception\TestCase\Test { // phpcs:ignore
 				);
 			}
 		);
+		$container->set(
+			Dependency_Check::class,
+			function () {
+				return new Dependency_Check();
+			}
+		);
 		$container->set(
 			Email_Editor::class,
 			function ( $container ) {