<?php

namespace App\Livewire\Ui\Domain;

use App\Models\Domain;
use App\Services\DkimService;
use Illuminate\Contracts\View\View;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Facades\Process;
use Livewire\Component;

class DkimStatus extends Component
{
    public Domain $domain;
    public ?string $selector = null;

    public function mount(Domain $domain, ?string $selector = null): void
    {
        $this->domain   = $domain;
        $this->selector = $selector
            ?: optional($domain->dkimKeys()->where('is_active', true)->latest()->first())->selector
                ?: (string) config('mailpool.defaults.dkim_selector', 'mwl1');
    }

    /** interne Normalisierung nur fürs Dateisystem */
    protected function safeKey(string|Domain $value, int $len = 64): string
    {
        $val = $value instanceof Domain ? $value->domain : (string) $value;
        return preg_replace('/[^a-zA-Z0-9_.-]+/', '_', substr($val, 0, $len));
    }

    /** Minimalcheck: existiert .private + steht’s in KeyTable & SigningTable? */
    protected function isDkimReady(string $domain, string $selector): bool
    {
        $hasFile = is_readable("/etc/opendkim/keys/{$domain}/{$selector}.private");

        $keyTab  = is_readable('/etc/opendkim/KeyTable')
            ? (@file_get_contents('/etc/opendkim/KeyTable') ?: '')
            : '';
        $signTab = is_readable('/etc/opendkim/SigningTable')
            ? (@file_get_contents('/etc/opendkim/SigningTable') ?: '')
            : '';

        $inKey   = (bool) preg_match(
            "/^{$selector}\._domainkey\.{$domain}\s+{$domain}:{$selector}:/m",
            $keyTab
        );
        $inSign  = (bool) preg_match(
            "/^\*\@{$domain}\s+{$selector}\._domainkey\.{$domain}\s*$/m",
            $signTab
        );

        return $hasFile && $inKey && $inSign;
    }

    /** Button: (re)generieren + Helper einhängen + OpenDKIM reload */
    public function regenerate(?string $selector = null): void
    {
        $selector = $selector ?: ($this->selector ?: (string) config('mailpool.defaults.dkim_selector', 'mwl1'));

        try {
            /** @var DkimService $svc */
            $svc = app(DkimService::class);

            // 1) Key erzeugen/auffrischen – deine Funktion macht bereits alles Nötige:
            //    - schreibt .pem/.pub/.private/.txt in storage
            //    - pflegt DB (DkimKey)
            //    - ruft /usr/local/sbin/mailwolt-install-dkim auf
            //    - reloadet opendkim
            $res = $svc->generateForDomain($this->domain, 2048, $selector);

            // 2) Sicherstellen, dass der Helper wirklich geladen hat (idempotent):
            Process::run(['systemctl', 'reload', 'opendkim']);

            // 3) Status checken & Feedback
            $ok = $this->isDkimReady($this->domain->domain, $selector);
            $this->dispatch('toast',
                type: $ok ? 'success' : 'warning',
                message: $ok ? 'DKIM ist aktiv.' : 'DKIM generiert – OpenDKIM/Tabellen prüfen.');
        } catch (\Throwable $e) {
            $this->dispatch('toast', type: 'error', message: 'DKIM Fehler: '.$e->getMessage());
        }

        // ggf. Selector für UI festhalten
        $this->selector = $selector;
    }

    public function render(): View
    {
        $dkimOk = $this->isDkimReady($this->domain->domain, $this->selector ?: (string) config('mailpool.defaults.dkim_selector', 'mwl1'));
        return view('livewire.ui.domain.dkim-status', compact('dkimOk'));
    }
}