<?php

namespace App\Livewire\Ui\System;

use Carbon\CarbonImmutable;
use Illuminate\Support\Str;
use Livewire\Component;

class BackupStatusCard extends Component
{
    public ?string $lastAt = null;        // formatierte Zeit
    public ?string $lastSize = null;      // human readable
    public ?string $lastDuration = null;  // human readable
    public ?bool $ok = null;

    // Laufzeit/Progress
    public string $state = 'idle';         // idle|running|done|error
    public string $step = '';             // aktueller Schritt
    public array $steps = [
        'mysqldump' => 'Datenbank sichern',
        'maildir' => 'Maildir kopieren',
        'app' => 'App sichern',
        'configs' => 'Configs sichern',
        'archive' => 'Archiv erstellen',
        'compress' => 'Komprimieren',
        'retention' => 'Aufräumen',
        'finish' => 'Abschluss',
    ];

    protected string $statusFile = '/var/lib/mailwolt/backup.status';

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

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

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

    public function runNow(): void
    {
        @shell_exec('nohup sudo -n /usr/local/sbin/mailwolt-backup >/dev/null 2>&1 &');
        // Sofort in "running" gehen – Poll übernimmt dann
        $this->state = 'running';
        $this->step = 'mysqldump';
    }

    public function load(bool $force = false): void
    {
        $raw = $this->readStatus();
        $this->state = $raw['state'] ?? 'idle';
        $this->step = $raw['step'] ?? '';

        // Datum/Zeit hübsch
        if (!empty($raw['time'])) {
            $this->lastAt = $this->fmtTime($raw['time']);
        } else {
            $this->lastAt = null;
        }

        // Größe/Dauer hübsch
        $bytes = isset($raw['size_bytes']) ? (int)$raw['size_bytes'] : null;
        $secs = isset($raw['dur_seconds']) ? (int)$raw['dur_seconds'] : null;

        $this->lastSize = $bytes !== null ? $this->humanBytes($bytes) : null;
        $this->lastDuration = $secs !== null ? $this->humanDuration($secs) : null;
        $this->ok = isset($raw['ok']) ? ((string)$raw['ok'] === '1') : null;
    }

    protected function readStatus(): array
    {
        if (!is_file($this->statusFile)) return [];
        $out = [];
        foreach (@file($this->statusFile, FILE_IGNORE_NEW_LINES) ?: [] as $ln) {
            if (!str_contains($ln, '=')) continue;
            [$k, $v] = array_map('trim', explode('=', $ln, 2));
            $out[$k] = $v;
        }

        // Backward compatibility (alte Keys)
        if (isset($out['size']) && !isset($out['size_bytes'])) {
            $out['size_bytes'] = (int)$out['size'];
        }
        if (isset($out['dur']) && !isset($out['dur_seconds'])) {
            $out['dur_seconds'] = (int)$out['dur'];
        }

        return $out;
    }

    protected function fmtTime(string $iso): string
    {
        try {
            $tz = config('app.timezone', 'UTC');
            // ISO aus Script ist idealerweise UTC (Z)
            $dt = CarbonImmutable::parse($iso)->timezone($tz);
            // z.B. 27.10.2025, 16:48:02 (CET)
            return $dt->isoFormat('L, LTS') . ' ' . $dt->format('T');
        } catch (\Throwable) {
            return $iso;
        }
    }

    protected function humanBytes(int $bytes): string
    {
        $units = ['B', 'KB', 'MB', 'GB', 'TB'];
        $i = 0;
        while ($bytes >= 1024 && $i < count($units) - 1) {
            $bytes /= 1024;
            $i++;
        }
        return number_format($bytes, $i === 0 ? 0 : 1, ',', '.') . ' ' . $units[$i];
    }

    protected function humanDuration(int $secs): string
    {
        if ($secs < 60) return $secs . ' s';
        $m = intdiv($secs, 60);
        $s = $secs % 60;
        if ($m < 60) return sprintf('%d min %02d s', $m, $s);
        $h = intdiv($m, 60);
        $m = $m % 60;
        return sprintf('%d h %02d min', $h, $m);
    }
}

//
//namespace App\Livewire\Ui\System;
//
//use Livewire\Component;
//
//class BackupStatusCard extends Component
//{
//    public ?string $lastAt = null;
//    public ?string $lastSize = null;
//    public ?string $lastDuration = null;
//    public ?bool $ok = null;
//
//    public function mount(): void { $this->load(); }
//    public function render() { return view('livewire.ui.system.backup-status-card'); }
//    public function refresh(): void { $this->load(true); }
//
//    public function runNow(): void
//    {
//        @shell_exec('nohup sudo -n /usr/local/sbin/mailwolt-backup >/dev/null 2>&1 &');
////        $this->dispatch('toast', type:'info', title:'Backup gestartet');
//    }
//
//    protected function load(bool $force=false): void
//    {
//        // Example: parse a tiny status file your backup script writes.
//        $f = '/var/lib/mailwolt/backup.status';
//        if (is_file($f)) {
//            $lines = @file($f, FILE_IGNORE_NEW_LINES) ?: [];
//            foreach ($lines as $ln) {
//                if (str_starts_with($ln,'time=')) $this->lastAt = substr($ln,5);
//                if (str_starts_with($ln,'size=')) $this->lastSize = substr($ln,5);
//                if (str_starts_with($ln,'dur='))  $this->lastDuration = substr($ln,4);
//                if (str_starts_with($ln,'ok='))   $this->ok = (substr($ln,3) === '1');
//            }
//        }
//    }
//}