<?php

namespace App\Livewire\Ui\System;

use App\Support\CacheVer;
use App\Support\WoltGuard\Probes;
use Illuminate\Support\Facades\Artisan;
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;

    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
    {
        // 1) Karten aus Config laden
        $cards = config('woltguard.cards', []);

        if (empty($cards)) {
            // Config-Clear/-Cache synchron ausführen (kostet ~ms)
            try {
                Artisan::call('config:clear');
                Artisan::call('config:cache');
            } catch (\Throwable $e) {
                // ignoriere – UI soll trotzdem laufen
            }
            $cards = config('woltguard.cards', []);
        }

        // 2) Service-Status aus Cache (versionierter Key)
        $key   = \App\Support\CacheVer::k('health:services');
        $raw   = Cache::get($key, []);
        // Legacy-Key als Fallback
        if (empty($raw)) $raw = Cache::get('health:services', []);

        $cached = collect($raw)->keyBy('name');

        $rows   = [];
        $ok     = 0;

        foreach ($cards as $name => $card) {
            $isOk = (bool) ($cached->get($name)['ok'] ?? false);

            // 3) Wenn Cache leer → aktiv prüfen
            if ($cached->isEmpty()) {
                foreach ($card['sources'] as $src) {
                    if ($this->check($src)) { $isOk = true; break; }
                }
            }

            if ($isOk) $ok++;

            $rows[] = [
                'name'  => $name,                // <— wichtig, damit der Cache keyBy('name') später klappt
                'label' => $card['label'] ?? $name,
                'hint'  => $card['hint'] ?? null,
                'ok'    => $isOk,
            ];
        }

        // 4) Wenn wir aktiv geprüft haben (Cache war leer) → Cache auffüllen
        if ($cached->isEmpty() && !empty($rows)) {
            Cache::put($key, $rows, 600);                 // 10 Minuten
            Cache::forget('health:services');             // Legacy aufräumen
        }

        // 5) Kopfzahlen + UI-Daten
        $this->totalCount = count($rows);
        $this->okCount    = $ok;
        $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($r) => [
            'label'     => $r['label'],
            'hint'      => $r['hint'],
            'ok'        => $r['ok'],
            'dotClass'  => $r['ok'] ? 'bg-emerald-400' : 'bg-rose-400',
            'pillText'  => $r['ok'] ? 'Online' : 'Offline',
            'pillClass' => $r['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
//    {
//        $cards = config('woltguard.cards', []);
//
//        $raw = Cache::get(CacheVer::k('health:services'), []);
//
//        // einmaliger Fallback für ältere Deploys:
//        if (empty($raw)) {
//            $raw = Cache::get('health:services', []);
//        }
//
//        $cached = collect($raw)->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; }
    }
}