<?php

declare(strict_types=1);

namespace App\Modules\Admin;

use App\Core\{Request, Response, Database};

final class AdminController
{
    public function getSystemStats(Request $request): void
    {
        // Must be super_admin
        if (($request->user->role ?? '') !== 'super_admin') {
            Response::error('غير مصرح', 'FORBIDDEN', 403);
            return;
        }

        $db = Database::getInstance();
        
        $stmt = $db->prepare("SELECT COUNT(*) as count FROM tenants");
        $stmt->execute();
        $totalTenants = $stmt->fetch()['count'];

        $stmt = $db->prepare("SELECT COUNT(*) as count FROM invoices");
        $stmt->execute();
        $totalInvoices = $stmt->fetch()['count'];

        // Simple Health Check
        $redisHealth = 'ok';
        try {
            $redis = \App\Core\Redis::getInstance();
            $redis->ping();
        } catch (\Throwable $e) {
            $redisHealth = 'failed';
        }

        Response::json([
            'success' => true,
            'data' => [
                'total_tenants' => $totalTenants,
                'total_invoices' => $totalInvoices,
                'system_health' => [
                    'database' => 'ok',
                    'redis' => $redisHealth
                ]
            ]
        ]);
    }
}