<?php

namespace App\Livewire\Ui\System;

use Livewire\Component;

class UpdateManager extends Component
{
    public bool $running = false;
    public string $log = '';
    public ?int $rc = null;
    public ?string $latest = null; // optional: von Cache o.ä.

    public function mount(): void
    {
        $this->refreshState();
        // Optional: latest Tag/Version aus Cache anzeigen
        $this->latest = cache('mailwolt.update_available');
    }

    public function refreshState(): void
    {
        $state = @trim(@file_get_contents('/var/lib/mailwolt/update/state') ?: '');
        $this->running = ($state === 'running');

        $rcRaw = @trim(@file_get_contents('/var/lib/mailwolt/update/rc') ?: '');
        $this->rc = is_numeric($rcRaw) ? (int)$rcRaw : null;

        // letzte 200 Zeilen Log
        $this->log = @shell_exec('tail -n 200 /var/log/mailwolt-update.log 2>/dev/null') ?? '';
    }

    public function runUpdate(): void
    {
        // Hinweis „Update verfügbar“ ausblenden
        cache()->forget('mailwolt.update_available');

        // Update im Hintergrund starten
        @shell_exec('nohup sudo -n /usr/local/sbin/mw-update >/dev/null 2>&1 &');

        $this->running = true;
        $this->dispatch('toast',
            type: 'info',
            badge: 'Update',
            title: 'Update gestartet',
            text: 'Das System wird aktualisiert …',
            duration: 6000
        );
    }

    public function poll(): void
    {
        $before = $this->running;
        $this->refreshState();

        if ($before && !$this->running && $this->rc !== null) {
            $ok = ($this->rc === 0);
            $this->dispatch('toast',
                type: $ok ? 'done' : 'warn',
                badge: 'Update',
                title: $ok ? 'Update abgeschlossen' : 'Update fehlgeschlagen',
                text: $ok ? 'Die neue Version ist aktiv.' : "Fehlercode: {$this->rc}. Log prüfen.",
                duration: 8000
            );
        }
    }

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