<?php

namespace App\Services\Hosting\Health;

use App\Services\Hosting\Proxmox\ProxmoxClient;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Queue;

class SystemHealthService
{
    public function __construct(private readonly ProxmoxClient $proxmox) {}

    /**
     * @return array<string, array{status: string, message: string}>
     */
    public function checks(): array
    {
        return [
            'database' => $this->checkDatabase(),
            'proxmox' => $this->checkProxmox(),
            'traefik_config' => $this->checkTraefik(),
            'queue' => $this->checkQueue(),
        ];
    }

    private function checkDatabase(): array
    {
        try {
            DB::connection()->getPdo();

            return ['status' => 'ok', 'message' => 'Datenbank erreichbar'];
        } catch (\Throwable $e) {
            return ['status' => 'error', 'message' => $e->getMessage()];
        }
    }

    private function checkProxmox(): array
    {
        try {
            $this->proxmox->node();

            return ['status' => 'ok', 'message' => 'Proxmox API erreichbar'];
        } catch (\Throwable $e) {
            return ['status' => 'error', 'message' => $e->getMessage()];
        }
    }

    private function checkTraefik(): array
    {
        $path = config('hosting.traefik.dynamic_config_path');
        if (! $path) {
            return ['status' => 'warning', 'message' => 'Traefik-Pfad nicht konfiguriert'];
        }
        if (! is_writable(dirname($path)) && ! file_exists($path)) {
            return ['status' => 'warning', 'message' => 'Traefik-Verzeichnis nicht beschreibbar'];
        }

        return ['status' => 'ok', 'message' => is_file($path) ? 'Konfigurationsdatei vorhanden' : 'Wird bei erster Route angelegt'];
    }

    private function checkQueue(): array
    {
        try {
            $size = DB::table('jobs')->count();

            return ['status' => 'ok', 'message' => "Queue: {$size} ausstehende Jobs"];
        } catch (\Throwable) {
            return ['status' => 'warning', 'message' => 'Queue-Tabelle nicht verfügbar (sync driver?)'];
        }
    }
}