<?php
/**
 * System Info Class
 *
 * Gibt Systemstatus-Informationen als Array zurück
 *
 * @package Admin_Backend_and_Update_Helper_YIS_Media
 * @since 1.0.0
 */

if (!defined('ABSPATH')) {
    exit;
}

class backhe_yis_System_Info {
    
    public function get_all_info() {
        global $wpdb;

        $theme = wp_get_theme();
        $plugins = get_plugins();
        $active = get_option('active_plugins', array());

        $extensions = array();
        foreach (array('curl','gd','mbstring','xml','json','openssl','zip','dom','simplexml') as $ext) {
            $extensions[$ext] = extension_loaded($ext);
        }
        
        $disk_total = @disk_total_space(ABSPATH);
        $disk_free  = @disk_free_space(ABSPATH);
        $used = $disk_total - $disk_free;
        $used_percentage = $disk_total > 0 ? round(($used / $disk_total) * 100) : 0;
        
        // Website-Größe berechnen
        $website_size = $this->get_directory_size(ABSPATH);
        
        // PHP Version Check
$current_php = phpversion();
$latest_stable_php = '8.3.0'; // Aktuelle stabile Version
$update_recommended = version_compare($current_php, $latest_stable_php, '<');

// Datenbank-Informationen
$db_size = $wpdb->get_var(
    $wpdb->prepare(
        "SELECT SUM(data_length + index_length) 
         FROM information_schema.TABLES 
         WHERE table_schema = %s",
        DB_NAME
    )
);

$table_count = $wpdb->get_var(
    $wpdb->prepare(
        "SELECT COUNT(*) 
         FROM information_schema.TABLES 
         WHERE table_schema = %s",
        DB_NAME
    )
);

$max_allowed_packet = $wpdb->get_var( "SHOW VARIABLES LIKE 'max_allowed_packet'", 1 );
$max_connections    = $wpdb->get_var( "SHOW VARIABLES LIKE 'max_connections'", 1 );

return array(
    'server' => array(
        'software'      => isset( $_SERVER['SERVER_SOFTWARE'] )
            ? sanitize_text_field( wp_unslash( $_SERVER['SERVER_SOFTWARE'] ) )
            : 'Unbekannt',
        'os'            => php_uname(),
        'hostname'      => php_uname( 'n' ),
        'architecture'  => php_uname( 'm' ),
    ),
            'php' => array(
                'version' => $current_php,
                'latest_stable' => $latest_stable_php,
                'update_recommended' => $update_recommended,
                'memory_limit' => ini_get('memory_limit'),
                'max_execution_time' => ini_get('max_execution_time'),
                'upload_max_filesize' => ini_get('upload_max_filesize'),
                'post_max_size' => ini_get('post_max_size'),
                'max_input_vars' => ini_get('max_input_vars'),
                'display_errors' => ini_get('display_errors') ? 'An' : 'Aus',
                'allow_url_fopen' => ini_get('allow_url_fopen') ? 'Ja' : 'Nein'
            ),
            'database' => array(
                'type' => 'MySQL',
                'version' => $wpdb->db_version(),
                'charset' => $wpdb->charset,
                'collation' => $wpdb->collate,
                'prefix' => $wpdb->prefix,
                'max_allowed_packet' => $max_allowed_packet ? size_format($max_allowed_packet) : 'Unbekannt',
                'max_connections' => $max_connections ? $max_connections : 'Unbekannt',
                'table_count' => $table_count,
                'database_size' => $db_size ? size_format($db_size) : 'Unbekannt'
            ),
            'wordpress' => array(
                'version' => get_bloginfo('version'),
                'multisite' => is_multisite() ? 'Ja' : 'Nein',
                'language' => get_locale(),
                'debug_mode' => (defined('WP_DEBUG') && WP_DEBUG) ? 'Ja' : 'Nein',
                'wp_memory_limit' => WP_MEMORY_LIMIT,
                'wp_max_memory_limit' => WP_MAX_MEMORY_LIMIT,
                'home_url' => home_url(),
                'site_url' => site_url()
            ),
            'theme' => array(
                'active' => array(
                    'name' => $theme->get('Name'),
                    'version' => $theme->get('Version'),
                    'author' => $theme->get('Author'),
                    'template' => $theme->get('Template'),
                    'stylesheet' => $theme->get_stylesheet()
                ),
                'all' => $this->get_all_themes()
            ),
            'plugins' => array(
                'total' => count($plugins),
                'active' => count($active),
                'inactive' => count($plugins) - count($active),
                'list' => $this->get_all_plugins()
            ),
            'extensions' => $extensions,
            'disk' => array(
                'total_formatted' => size_format($disk_total),
                'free_formatted' => size_format($disk_free),
                'used_formatted' => size_format($used),
                'used_percentage' => $used_percentage,
                'website_size' => size_format($website_size)
            )
        );
    }
    
    /**
     * Berechnet die Größe eines Verzeichnisses rekursiv
     */
    private function get_directory_size($path) {
        $total_size = 0;
        $timeout = time() + 5; // 5 Sekunden Timeout
        
        if (is_dir($path)) {
            $files = new RecursiveIteratorIterator(
                new RecursiveDirectoryIterator($path, RecursiveDirectoryIterator::SKIP_DOTS),
                RecursiveIteratorIterator::CATCH_GET_CHILD
            );
            
            foreach ($files as $file) {
                if (time() > $timeout) {
                    break; // Timeout erreicht
                }
                
                if ($file->isFile()) {
                    $total_size += $file->getSize();
                }
            }
        }
        
        return $total_size;
    }
    
    /**
     * Gibt alle installierten Themes zurück
     */
    private function get_all_themes() {
        $all_themes = wp_get_themes();
        $current_theme = wp_get_theme();
        $themes_list = array();
        
        foreach ( $all_themes as $theme_slug => $theme ) {
    $themes_list[] = array(
        'name'       => $theme->get( 'Name' ),
        'version'    => $theme->get( 'Version' ),
        'author'     => wp_strip_all_tags( $theme->get( 'Author' ) ),
        'is_active'  => ( $current_theme->get_stylesheet() === $theme_slug ),
    );
}

return $themes_list;
}

/**
 * Gibt alle installierten Plugins zurück
 */
private function get_all_plugins() {
    $all_plugins    = get_plugins();
    $active_plugins = get_option( 'active_plugins', array() );
    $plugins_list   = array();

    foreach ( $all_plugins as $plugin_file => $plugin_data ) {
        $plugins_list[] = array(
            'name'       => $plugin_data['Name'],
            'version'    => $plugin_data['Version'],
            'author'     => wp_strip_all_tags( $plugin_data['Author'] ),
            'is_active'  => in_array( $plugin_file, $active_plugins, true ),
        );
    }

    return $plugins_list;
}
}