<?php

namespace App\Console\Commands;

use App\Models\IncidentActivity;
use App\Models\PaymentIncident;
use App\Models\ProviderUptimeLog;
use Illuminate\Console\Command;
use Illuminate\Support\Facades\Http;
use Illuminate\Support\Facades\Log;

class CheckPaymentUptime extends Command
{
    protected $signature = 'payment:check-uptime';

    protected $description = 'Prüft die Erreichbarkeit von PAYONE und legt bei Ausfall automatisch einen Incident an.';

    /**
     * @var array<string, string>
     */
    private array $endpoints = [
        'payone' => 'https://api.pay1.de/post-gateway/',
    ];

    public function handle(): int
    {
        Log::channel('payment')->info('COMMAND [payment:check-uptime] started.');

        foreach ($this->endpoints as $provider => $url) {
            $this->checkProvider($provider, $url);
        }

        Log::channel('payment')->info('COMMAND [payment:check-uptime] finished.');

        return self::SUCCESS;
    }

    private function checkProvider(string $provider, string $url): void
    {
        $startMs = now()->valueOf();

        try {
            $response = Http::timeout(10)->head($url);
            $responseTimeMs = now()->valueOf() - $startMs;
            $isUp = $response->successful() || $response->status() < 500;
            $errorMessage = $isUp ? null : 'HTTP '.$response->status();
        } catch (\Exception $e) {
            $responseTimeMs = now()->valueOf() - $startMs;
            $isUp = false;
            $errorMessage = $e->getMessage();
        }

        ProviderUptimeLog::create([
            'provider' => $provider,
            'is_up' => $isUp,
            'response_time_ms' => (int) $responseTimeMs,
            'error_message' => $errorMessage,
            'checked_at' => now(),
        ]);

        $status = $isUp ? 'UP' : 'DOWN';
        $this->line("[{$provider}] {$status} ({$responseTimeMs}ms)");
        Log::channel('payment')->info("[payment:check-uptime] {$provider} {$status}", [
            'response_time_ms' => $responseTimeMs,
            'error_message' => $errorMessage,
        ]);

        if (! $isUp) {
            $this->handleOutage($provider, $errorMessage);
        } else {
            $this->handleRecovery($provider);
        }
    }

    private function handleOutage(string $provider, ?string $errorMessage): void
    {
        $incident = PaymentIncident::firstOrCreate(
            [
                'provider' => $provider,
                'type' => 'outage',
                'status' => 'open',
            ],
            [
                'title' => 'Automatisch: '.strtoupper($provider).' nicht erreichbar',
                'description' => 'Uptime-Check hat einen Ausfall erkannt.',
                'severity' => 'critical',
                'detected_at' => now()->startOfHour(),
            ]
        );

        IncidentActivity::create([
            'incident_id' => $incident->id,
            'type' => 'note',
            'title' => 'Uptime-Check: '.strtoupper($provider).' DOWN',
            'content' => $errorMessage,
            'author' => 'System',
        ]);

        Log::channel('payment')->error("[payment:check-uptime] Outage-Incident #{$incident->id} für {$provider}.");
    }

    private function handleRecovery(string $provider): void
    {
        $openOutages = PaymentIncident::where('provider', $provider)
            ->where('type', 'outage')
            ->whereIn('status', ['open', 'in_progress'])
            ->get();

        foreach ($openOutages as $incident) {
            $incident->update([
                'status' => 'resolved',
                'resolved_at' => now(),
            ]);

            IncidentActivity::create([
                'incident_id' => $incident->id,
                'type' => 'status_change',
                'title' => 'Automatisch aufgelöst: '.strtoupper($provider).' ist wieder erreichbar',
                'author' => 'System',
            ]);

            Log::channel('payment')->info("[payment:check-uptime] Incident #{$incident->id} für {$provider} automatisch aufgelöst.");
        }
    }
}