WP-LIT-MCP/src/Integrations/Divi/DiviCompatibility.php

<?php

declare(strict_types=1);

namespace LIT\MCP\Integrations\Divi;

use LIT\MCP\Integrations\Divi\Library\DiviLibraryStore;
use LIT\MCP\Integrations\Divi\Pages\DynamicContentMap;
use LIT\MCP\Integrations\Divi\Schema\DiviModules;
use Throwable;

defined('ABSPATH') || exit;

/**
 * Live check of the Divi internals LIT MCP relies on (decisions note §5, E15): classes,
 * functions, the library post type and taxonomies. lit-site-status shows the failed checks, so a
 * Divi update that moves one of them is visible before a tool reports "unsupported".
 */
final class DiviCompatibility
{
    /** @param array<string, callable(): bool>|null $checks Label => check; null = defaults(). */
    public function __construct(private ?array $checks = null)
    {
    }

    /** @return list<string> Labels of the checks that failed or threw. */
    public function problems(): array
    {
        $problems = [];
        foreach ($this->checks ?? self::defaults() as $label => $check) {
            try {
                $ok = (bool) $check();
            } catch (Throwable) {
                $ok = false;
            }
            if (! $ok) {
                $problems[] = (string) $label;
            }
        }

        return $problems;
    }

    /** @return array<string, callable(): bool> */
    public static function defaults(): array
    {
        return [
            'ModuleRegistration (Modul-Katalog)' => static fn (): bool => DiviModules::isAvailable(),
            'DynamicContentOptions (Dynamic Content)' =>
                static fn (): bool => class_exists(DynamicContentMap::REGISTRY),
            'et_pb_is_allowed (Divi-Rollen)' => static fn (): bool => function_exists('et_pb_is_allowed'),
            'Post-Typ et_pb_layout (Bibliothek)' =>
                static fn (): bool => post_type_exists(DiviLibraryStore::POST_TYPE),
            'Taxonomien scope, layout_type, module_width (Bibliothek)' =>
                static fn (): bool => (new DiviLibraryStore())->missingTaxonomies() === [],
            'GlobalLayout::is_global_layout_template (globale Module)' =>
                static fn (): bool => method_exists(DiviLibraryStore::GLOBAL_LAYOUT, 'is_global_layout_template'),
            'ET_Core_PageResource (CSS-Cache)' => static fn (): bool => class_exists('ET_Core_PageResource'),
        ];
    }
}