<?php

namespace App\Livewire\Ui\System;

use App\Support\WoltGuard\Probes;
use Illuminate\Support\Facades\Cache;
use Illuminate\Support\Facades\DB;
use Livewire\Component;
use Illuminate\Support\Collection;

class ServicesCard extends Component
{
    use Probes;
    /** Daten fürs Blade */
    public array $servicesCompact = [];
    public int $okCount = 0;
    public int $totalCount = 0;
    public bool $guardOk = false;

    // Badge (rechts)
    public string $badgeText = '';
    public string $badgeClass = '';
    public string $badgeIcon  = 'ph ph-check-circle';

    // optionales Polling im Blade (du hast es dort referenziert)
    public int $pollSeconds = 15;

    /** Pro Karte mehrere Quellen – Grün sobald eine Quelle OK ist */
//    protected array $cards = [
//        // Mail
//        'postfix' => ['label'=>'Postfix','hint'=>'MTA / Versand','sources'=>['systemd:postfix']],
//        'dovecot' => ['label'=>'Dovecot','hint'=>'IMAP / POP3','sources'=>['systemd:dovecot','tcp:127.0.0.1:993']],
//        'rspamd'  => ['label'=>'Rspamd','hint'=>'Spamfilter','sources'=>['systemd:rspamd','tcp:127.0.0.1:11333','tcp:127.0.0.1:11334']],
//        'clamav'  => ['label'=>'ClamAV','hint'=>'Virenscanner','sources'=>[
//            'systemd:clamav-daemon','systemd:clamav-daemon@scan','systemd:clamd',
//            'socket:/run/clamav/clamd.ctl','pid:/run/clamav/clamd.pid','tcp:127.0.0.1:3310',
//        ]],
//        // Daten & Cache
//        'db'      => ['label'=>'Datenbank','hint'=>'MySQL / MariaDB','sources'=>['db']],
//        'redis'   => ['label'=>'Redis','hint'=>'Cache / Queue','sources'=>['tcp:127.0.0.1:6379','systemd:redis-server','systemd:redis']],
//        // Web / PHP
//        'php-fpm' => ['label'=>'PHP-FPM','hint'=>'PHP Runtime','sources'=>[
//            'systemd:php8.3-fpm','systemd:php8.2-fpm','systemd:php8.1-fpm','systemd:php-fpm',
//            'socket:/run/php/php8.3-fpm.sock','socket:/run/php/php8.2-fpm.sock',
//            'socket:/run/php/php8.1-fpm.sock','socket:/run/php/php-fpm.sock','tcp:127.0.0.1:9000',
//        ]],
//        'nginx'   => ['label'=>'Nginx','hint'=>'Webserver','sources'=>['systemd:nginx','tcp:127.0.0.1:80']],
//        // MailWolt (Unit ODER laufender artisan Prozess)
//        'mw-queue'    => ['label'=>'MailWolt Queue','hint'=>'Job Worker','sources'=>['systemd:mailwolt-queue','proc:/php.*artisan(\.php)?\s+queue:work']],
//        'mw-schedule' => ['label'=>'MailWolt Schedule','hint'=>'Task Scheduler','sources'=>['systemd:mailwolt-schedule','proc:/php.*artisan(\.php)?\s+schedule:work']],
//        'mw-ws'       => ['label'=>'MailWolt WebSocket','hint'=>'Echtzeit Updates','sources'=>['systemd:mailwolt-ws','tcp:127.0.0.1:8080']],
//        // Sonstiges
//        'fail2ban' => ['label'=>'Fail2Ban','hint'=>'SSH / Mail Protection','sources'=>['systemd:fail2ban']],
//        'journal'  => ['label'=>'System Logs','hint'=>'Journal','sources'=>['systemd:systemd-journald','systemd:rsyslog']],
//    ];

    public function mount(): void
    {
        $this->load();
    }

    public function refresh(): void
    {
        // nur unsere eigene Services-Card neu aufbauen (Cache vom Job lassen wir in Ruhe)
        $this->load();
    }

    public function render()
    {
        return view('livewire.ui.system.services-card');
    }

    public function load(): void
    {
        $cards = config('woltguard.cards', []);
        $cached = collect(Cache::get('health:services', []))->keyBy('name');

        $rows = [];
        $ok = 0;
        $total = 0;

        foreach ($cards as $key => $card) {
            $total++;
            // 1) Cache-Hit?
            $isOk = (bool) ($cached->get($key)['ok'] ?? false);

            // 2) Fallback probe (falls Cache leer/alt)
            if ($cached->isEmpty()) {
                foreach ($card['sources'] as $src) {
                    if ($this->check($src)) { $isOk = true; break; }
                }
            }

            if ($isOk) $ok++;

            $rows[] = [
                'label' => $card['label'],
                'hint'  => $card['hint'],
                'ok'    => $isOk,
            ];
        }

        $this->totalCount = count($rows);
        $this->okCount    = collect($rows)->where('ok', true)->count();
        $this->guardOk    = $this->totalCount > 0 && $this->okCount === $this->totalCount;

        [$this->badgeText, $this->badgeClass, $this->badgeIcon] =
            $this->guardOk
                ? ['alle Dienste OK', 'text-emerald-200 bg-emerald-500/10 border-emerald-400/30', 'ph ph-check-circle']
                : ["{$this->okCount}/{$this->totalCount} aktiv", 'text-amber-200 bg-amber-500/10 border-amber-400/30', 'ph ph-warning'];

        $this->servicesCompact = collect($rows)->map(fn($row) => [
            'label'     => $row['label'],
            'hint'      => $row['hint'],
            'ok'        => $row['ok'],
            'dotClass'  => $row['ok'] ? 'bg-emerald-400' : 'bg-rose-400',
            'pillText'  => $row['ok'] ? 'Online' : 'Offline',
            'pillClass' => $row['ok']
                ? 'text-emerald-300 border-emerald-400/30 bg-emerald-500/10'
                : 'text-rose-300 border-rose-400/30 bg-rose-500/10',
        ])->all();
    }
//    public function load(): void
//    {
//        // Cache nur als optionaler Beschleuniger für Einzel-Checks,
//        // NICHT für Summen / Anzahl Services.
//        $cached = collect(Cache::get('health:services', []))->keyBy('name');
//
//        $rows = [];
//        $ok = 0;
//        $total = 0;
//
//        foreach ($this->cards as $key => $card) {
//            $total++;
//
//            $isOk = false;
//
//            // 1) Cache-Shortcut (wenn vorhanden)
//            foreach ($card['sources'] as $src) {
//                $hit = $this->isSourceOkFromCache($src, $cached);
//                if ($hit === true) { $isOk = true; break; }
//            }
//
//            // 2) aktive Probes, wenn Cache nicht geholfen hat
//            if (!$isOk) {
//                foreach ($card['sources'] as $src) {
//                    if ($this->check($src)) { $isOk = true; break; }
//                }
//            }
//
//            if ($isOk) $ok++;
//
//            $rows[$key] = [
//                'label' => $card['label'],
//                'hint'  => $card['hint'],
//                'ok'    => $isOk,
//            ];
//        }
//
//        // Zahlen für die Kopfzeile / Badge
//        $this->totalCount = $total;
//        $this->okCount    = $ok;
//        $this->guardOk    = $total > 0 && $ok === $total;
//
//        // Badge-Props
//        if ($this->guardOk) {
//            $this->badgeText  = 'alle Dienste OK';
//            $this->badgeClass = 'text-emerald-200 bg-emerald-500/10 border-emerald-400/30';
//            $this->badgeIcon  = 'ph ph-check-circle';
//        } else {
//            $this->badgeText  = "{$ok}/{$total} aktiv";
//            $this->badgeClass = 'text-amber-200 bg-amber-500/10 border-amber-400/30';
//            $this->badgeIcon  = 'ph ph-warning';
//        }
//
//        // Liste für die Darstellung
//        $this->servicesCompact = collect($rows)->map(function ($row) {
//            $ok = (bool)$row['ok'];
//            return [
//                'label'     => $row['label'],
//                'hint'      => $row['hint'],
//                'ok'        => $ok,
//                'dotClass'  => $ok ? 'bg-emerald-400' : 'bg-rose-400',
//                'pillText'  => $ok ? 'Online' : 'Offline',
//                'pillClass' => $ok
//                    ? 'text-emerald-300 border-emerald-400/30 bg-emerald-500/10'
//                    : 'text-rose-300 border-rose-400/30 bg-rose-500/10',
//            ];
//        })->values()->all();
//    }

    /* ---------- Cache-Matcher ---------- */

    protected function isSourceOkFromCache(string $source, Collection $idx): ?bool
    {
        if (str_starts_with($source, 'tcp:')) {
            [$host, $port] = explode(':', substr($source, 4), 2);
            $name = "{$host}:{$port}";
            return $idx->has($name) ? (bool)($idx[$name]['ok'] ?? false) : null;
        }
        if ($source === 'db') {
            return $idx->has('db') ? (bool)($idx['db']['ok'] ?? false) : null;
        }
        if (str_starts_with($source, 'systemd:')) {
            $unit = substr($source, 8);
            return $idx->has($unit) ? (bool)($idx[$unit]['ok'] ?? false) : null;
        }
        return null; // für socket:/ pid:/ proc: keine Cache-Infos
    }

    /* ---------- Probes ---------- */

    protected function check(string $source): bool
    {
        if (str_starts_with($source, 'systemd:')) {
            return $this->probeSystemd(substr($source, 8));
        }
        if (str_starts_with($source, 'tcp:')) {
            [$host, $port] = explode(':', substr($source, 4), 2);
            return $this->probeTcp($host, (int)$port);
        }
        if (str_starts_with($source, 'socket:')) {
            $path = substr($source, 7);
            return is_string($path) && @file_exists($path);
        }
        if (str_starts_with($source, 'pid:')) {
            $path = substr($source, 4);
            if (!@is_file($path)) return false;
            $pid = (int)trim(@file_get_contents($path) ?: '');
            return $pid > 1 && @posix_kill($pid, 0);
        }
        if (str_starts_with($source, 'proc:')) {
            $regex = substr($source, 5);
            return $this->probeProcessRegex($regex);
        }
        if ($source === 'db') {
            return $this->probeDatabase();
        }
        return false;
    }

    protected function probeSystemd(string $unit): bool
    {
        $bin = file_exists('/bin/systemctl') ? '/bin/systemctl'
            : (file_exists('/usr/bin/systemctl') ? '/usr/bin/systemctl' : 'systemctl');
        $cmd = sprintf('%s is-active --quiet %s 2>/dev/null', escapeshellcmd($bin), escapeshellarg($unit));
        $exit = null;
        @exec($cmd, $_, $exit);
        return $exit === 0;
    }

    protected function probeTcp(string $host, int $port, int $timeout = 1): bool
    {
        $fp = @fsockopen($host, $port, $e1, $e2, $timeout);
        if (is_resource($fp)) { fclose($fp); return true; }
        return false;
    }

    protected function probeProcessRegex(string $regex): bool
    {
        $regex = '#' . $regex . '#i';
        foreach (@scandir('/proc') ?: [] as $d) {
            if (!ctype_digit($d)) continue;
            $cmd = @file_get_contents("/proc/$d/cmdline");
            if ($cmd === false || $cmd === '') continue;
            $cmd = str_replace("\0", ' ', $cmd);
            if (preg_match($regex, $cmd)) return true;
        }
        return false;
    }

    protected function probeDatabase(): bool
    {
        try { DB::connection()->getPdo(); return true; }
        catch (\Throwable) { return false; }
    }
}