<?php

namespace App\Livewire\Ui\Security;

use Livewire\Component;

class Fail2BanCard extends Component
{
    public bool $available = true;
    public bool $permDenied = false; // neu
    public int  $activeBans = 0;
    public array $jails = [];
    public array $topIps = [];

    // ...

    protected function load(bool $force = false): void
    {
        $bin = trim((string) @shell_exec('command -v fail2ban-client 2>/dev/null')) ?: '';
        if ($bin === '') {
            $this->available = false;
            $this->permDenied = false;
            $this->activeBans = 0;
            $this->jails = [];
            $this->topIps = [];
            return;
        }

        // ping → prüft zugleich Rechte (liefert Fehlertext, wenn Socket gesperrt)
        [$ok, $raw] = $this->f2b('ping'); // ok==true wenn "pong"

        if (!$ok && stripos($raw, 'permission denied') !== false) {
            $this->available  = true;
            $this->permDenied = true;
            $this->activeBans = 0;
            $this->jails      = [];
            $this->topIps     = $this->collectTopIps();
            return;
        }

        // Jails
        [, $status] = $this->f2b('status');
        $jailsLn = $this->firstMatch('/Jail list:\s*(.+)$/mi', $status);
        $jails   = $jailsLn ? array_filter(array_map('trim', preg_split('/\s*,\s*/', $jailsLn))) : [];

        $total = 0; $rows = [];
        foreach ($jails as $j) {
            [, $s] = $this->f2b('status '.escapeshellarg($j));
            $banned = (int) ($this->firstMatch('/Currently banned:\s+(\d+)/i', $s) ?: 0);
            $ipList = $this->firstMatch('/Banned IP list:\s*(.+)$/mi', $s) ?: '';
            $ips    = $ipList !== '' ? array_values(array_filter(array_map('trim', preg_split('/\s+/', $ipList)))) : [];
            $rows[] = ['name'=>$j,'banned'=>$banned,'ips'=>array_slice($ips, 0, 8)];
            $total += $banned;
        }

        $this->available  = true;
        $this->permDenied = false;
        $this->activeBans = $total;
        $this->jails      = $rows;
        $this->topIps     = $this->collectTopIps();
    }

    /** führt fail2ban-client aus; mit sudo-Fallback; gibt [ok, output] zurück */
    private function f2b(string $args): array
    {
        $sudo  = '/usr/bin/sudo';
        $f2b   = '/usr/bin/fail2ban-client';
        $cmd   = "timeout 2 $sudo -n $f2b $args 2>&1";
        $out   = (string) @shell_exec($cmd);

        $ok = stripos($out, 'Status') !== false
            || stripos($out, 'Jail list') !== false
            || stripos($out, 'pong') !== false;

        return [$ok, $out];
    }

    private function firstMatch(string $pattern, string $haystack): ?string
    {
        return preg_match($pattern, $haystack, $m) ? trim($m[1]) : null;
    }

    private function collectTopIps(): array
    {
        // … (deine vorhandene Methode aus meiner letzten Antwort – passt)
        // lässt du unverändert.
    }
}