<?php
/**
 * Read-only compatibility guidance. Never modifies another plugin.
 *
 * @package NBHPerformance
 */

namespace NBH\Performance\Modules\Compatibility;
use NBH\Performance\Modules\Core\Module;
use NBH\Performance\Modules\CacheEngine\DropInInstaller;

/**
 * Read-only compatibility guidance. Never modifies another plugin.
 */
final class CompatibilityRemediationManager implements Module {
    private $diagnosis;
    private $dropin;
    public function __construct( ConflictDiagnosis $diagnosis, PluginDetector $detector, DropInInstaller $dropin ) {
        unset( $detector );
        $this->diagnosis = $diagnosis;
        $this->dropin = $dropin;
    }
    public function register() { /* Read-only diagnostics: no external-plugin mutations or REST repair routes. */ }
    public function issues() {
        $issues = array();
        if ( (bool) get_option( 'nbh_performance_cache_enabled', 0 ) ) {
            $ownership = $this->dropin->reconcile();
            if ( in_array( $ownership, array( 'foreign', 'unreadable' ), true ) ) {
                $issues[] = array(
                    'id' => 'advanced-cache-dropin', 'tone' => 'warning',
                    'title' => __( 'Another cache system owns advanced-cache.php', 'nbh-performance' ),
                    'message' => __( 'NBH Performance will not overwrite another plugin\'s cache drop-in or change its settings. Disable the conflicting cache manually before enabling NBH page caching.', 'nbh-performance' ),
                    'actions' => array(),
                );
            }
        }
        return $issues;
    }
    public function preflight_toggles( array $values ) {
        if ( ! empty( $values['nbh_performance_cache_enabled'] ) && in_array( $this->dropin->reconcile(), array( 'foreign', 'unreadable' ), true ) ) {
            return new \WP_Error( 'nbh_performance_foreign_cache_dropin', __( 'Another caching system owns advanced-cache.php. Resolve the conflict manually; NBH Performance will not modify other plugins.', 'nbh-performance' ), array( 'status' => 409 ) );
        }
        return true;
    }
    public function consume_result() { return false; }
}