<?php

namespace App\Livewire\Ui\Domain;

use App\Models\Domain;
use App\Services\DkimService;
use Illuminate\Contracts\View\View;
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;

        // aktiver Selector aus DB, sonst Default aus config
        $this->selector = $selector
            ?: optional(
                $domain->dkimKeys()->where('is_active', true)->latest()->first()
            )->selector
                ?: (string) config('mailpool.defaults.dkim_selector', 'mwl1');
    }

    /**
     * Minimalcheck: ist das Keyfile vorhanden & >0 Bytes?
     * Nutzt sudo /usr/bin/test, damit www-data auch bei 0600/0750 prüfen kann.
     */
    protected function isDkimReady(string $domain, string $selector): bool
    {
        $key = "/etc/opendkim/keys/{$domain}/{$selector}.private";

        // -s => existiert und Größe > 0
        $res = Process::run(['sudo','-n','/usr/bin/test','-s',$key]);

        return $res->successful();
    }

    /** Button: (Re)generieren → Service kümmert sich um Helper & 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);
            $svc->generateForDomain($this->domain, 2048, $selector);

            // Status nach der Erzeugung erneut prüfen
            $ok = $this->isDkimReady($this->domain->domain, $selector);

            $this->dispatch('toast',
                type: $ok ? 'success' : 'warning',
                message: $ok ? 'DKIM ist aktiv.' : 'DKIM generiert – OpenDKIM prüfen.'
            );
        } catch (\Throwable $e) {
            $this->dispatch('toast', type: 'error', message: 'DKIM Fehler: '.$e->getMessage());
        }

        $this->selector = $selector;
    }

    public function render(): View
    {
        $sel    = $this->selector ?: (string) config('mailpool.defaults.dkim_selector', 'mwl1');
        $dkimOk = $this->isDkimReady($this->domain->domain, $sel);

        return view('livewire.ui.domain.dkim-status', compact('dkimOk'));
    }
}