<?php

namespace App\Livewire\Ui\Mail;

use Livewire\Component;
use App\Models\Domain;
use Illuminate\Support\Facades\Cache;

class DnsHealthCard extends Component
{
    public array $rows = []; // [ ['domain'=>..., 'dkim'=>bool, 'dmarc'=>bool, 'tlsa'=>bool], ... ]

    public function mount(): void { $this->load(); }
    public function render() { return view('livewire.ui.mail.dns-health-card'); }
    public function refresh(): void { $this->load(true); }

    protected function load(bool $force=false): void
    {
        $this->rows = Cache::remember('dash.dnshealth', $force ? 1 : 600, function () {
            $rows = [];
            $domains = Domain::query()->where('is_system', false)->where('is_active', true)->get(['domain']);
            foreach ($domains as $d) {
                $dom = $d->domain;
                $dkim = $this->hasTxt("_domainkey.$dom");          // rough: just any dkim TXT exists
                $dmarc = $this->hasTxt("_dmarc.$dom");
                $tlsa = $this->hasTlsa("_25._tcp.$dom") || $this->hasTlsa("_465._tcp.$dom") || $this->hasTlsa("_587._tcp.$dom");
                $rows[] = compact('dom','dkim','dmarc','tlsa');
            }
            return $rows;
        });
    }

    protected function hasTxt(string $name): bool
    {
        $out = @shell_exec("dig +short TXT ".escapeshellarg($name)." 2>/dev/null");
        return is_string($out) && trim($out) !== '';
    }
    protected function hasTlsa(string $name): bool
    {
        $out = @shell_exec("dig +short TLSA ".escapeshellarg($name)." 2>/dev/null");
        return is_string($out) && trim($out) !== '';
    }
}